diff --git a/.php_cs.dist b/.php_cs.dist
index a73e16918c9f..c0011033990d 100644
--- a/.php_cs.dist
+++ b/.php_cs.dist
@@ -8,6 +8,8 @@ return PhpCsFixer\Config::create()
     ->setRules(array(
         '@Symfony' => true,
         '@Symfony:risky' => true,
+        '@PHPUnit48Migration:risky' => true,
+        'php_unit_no_expectation_annotation' => false, // part of `PHPUnitXYMigration:risky` ruleset, to be enabled when PHPUnit 4.x support will be dropped, as we don't want to rewrite exceptions handling twice
         'array_syntax' => array('syntax' => 'long'),
         'protected_to_private' => false,
     ))
@@ -30,16 +32,13 @@ return PhpCsFixer\Config::create()
             ))
             // file content autogenerated by `var_export`
             ->notPath('Symfony/Component/Translation/Tests/fixtures/resources.php')
-            // autogenerated xmls
-            ->notPath('Symfony/Component/Console/Tests/Fixtures/application_1.xml')
-            ->notPath('Symfony/Component/Console/Tests/Fixtures/application_2.xml')
-            // yml
-            ->notPath('Symfony/Component/Yaml/Tests/Fixtures/sfTests.yml')
             // test template
             ->notPath('Symfony/Bundle/FrameworkBundle/Tests/Templating/Helper/Resources/Custom/_name_entry_label.html.php')
             // explicit heredoc test
             ->notPath('Symfony/Bundle/FrameworkBundle/Tests/Fixtures/Resources/views/translation.html.php')
-            // purposefully invalid JSON
-            ->notPath('Symfony/Component/Asset/Tests/fixtures/manifest-invalid.json')
+            // explicit trigger_error tests
+            ->notPath('Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/default.phpt')
+            ->notPath('Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/weak.phpt')
+            ->notPath('Symfony/Component/Debug/Tests/DebugClassLoaderTest.php')
     )
 ;
diff --git a/CHANGELOG-3.4.md b/CHANGELOG-3.4.md
index 24620ba3a50f..38a2d7c9a7a3 100644
--- a/CHANGELOG-3.4.md
+++ b/CHANGELOG-3.4.md
@@ -7,6 +7,37 @@ in 3.4 minor versions.
 To get the diff for a specific change, go to https://github.com/symfony/symfony/commit/XXX where XXX is the change hash
 To get the diff between two versions, go to https://github.com/symfony/symfony/compare/v3.4.0...v3.4.1
 
+* 3.4.3 (2018-01-05)
+
+ * bug #25685 Use triggering file to determine weak vendors if when the test is run in a separate process (alexpott)
+ * bug #25671 Remove randomness from dumped containers (nicolas-grekas)
+ * bug #25532 [HttpKernel] Disable CSP header on exception pages (ostrolucky)
+ * bug #25678 [WebProfilerBundle] set the var in the right scope (Jochen Mandl)
+ * bug #25491 [Routing] Use the default host even if context is empty (sroze)
+ * bug #25672 [WebServerBundle] use interface_exists instead of class_exists (kbond)
+ * bug #25662 Dumper shouldn't use html format for phpdbg / cli-server (jhoff)
+ * bug #25529 [Validator] Fix access to root object when using composite constraint (ostrolucky)
+ * bug #25404 [Form] Remove group options without data on debug:form command (yceruto)
+ * bug #25430 Fixes for Oracle in PdoSessionHandler (elislenio)
+ * bug #25117 [FrameworkBundle] Make cache:clear "atomic" and consistent with cache:warmup (hkdobrev)
+ * bug #25583 [HttpKernel] Call Response->setPrivate() instead of sending raw header() when session is started (Toflar)
+ * bug #25601 [TwigBundle/Brige] catch missing requirements to throw meaningful exceptions (nicolas-grekas)
+ * bug #25547 [DX][DependencyInjection] Suggest to write an implementation if the interface cannot be autowired (sroze)
+ * bug #25599 Add application/ld+json format associated to json (vincentchalamon)
+ * bug #25623 [HttpFoundation] Fix false-positive ConflictingHeadersException (nicolas-grekas)
+ * bug #25624 [WebServerBundle] Fix escaping of php binary with arguments (nicolas-grekas)
+ * bug #25604 Add check for SecurityBundle in createAccessDeniedException (FGM)
+ * bug #25591 [HttpKernel] fix cleaning legacy containers (nicolas-grekas)
+ * bug #25526 [WebProfilerBundle] Fix panel break when stopwatch component is not installed. (umulmrum, javiereguiluz)
+ * bug #25606 Updating message to inform the user how to install the component (weaverryan)
+ * bug #25571 [SecurityBundle] allow auto_wire for SessionAuthenticationStrategy class (xavren)
+ * bug #25567 [Process] Fix setting empty env vars (nicolas-grekas)
+ * bug #25407 [Console] Commands with an alias should not be recognized as ambiguous (Simperfit)
+ * bug #25523 [WebServerBundle] fix a bug where require would not require the good file because of env (Simperfit)
+ * bug #25559 [Process] Dont use getenv(), it returns arrays and can introduce subtle breaks accros PHP versions (nicolas-grekas)
+ * bug #25552 [WebProfilerBundle] Let fetch() cast URL to string (ro0NL)
+ * bug #25521 [Console] fix a bug when you are passing a default value and passing -n would output the index (Simperfit)
+
 * 3.4.2 (2017-12-15)
 
  * bug #25489 [FrameworkBundle] remove esi/ssi renderers if inactive (dmaicher)
diff --git a/LICENSE b/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/UPGRADE-3.4.md b/UPGRADE-3.4.md
index b6b1fb9b55bb..c7e06e61156c 100644
--- a/UPGRADE-3.4.md
+++ b/UPGRADE-3.4.md
@@ -204,12 +204,12 @@ FrameworkBundle
     a `TypeError` in 4.0.
 
  * `RouterDebugCommand::__construct()` now takes an instance of
-   `Symfony\Component\Routing\RouterInteface` as
+   `Symfony\Component\Routing\RouterInterface` as
     first argument. Not passing it is deprecated and will throw
     a `TypeError` in 4.0.
 
  * `RouterMatchCommand::__construct()` now takes an instance of
-   `Symfony\Component\Routing\RouterInteface` as
+   `Symfony\Component\Routing\RouterInterface` as
     first argument. Not passing it is deprecated and will throw
     a `TypeError` in 4.0.
 
diff --git a/UPGRADE-4.0.md b/UPGRADE-4.0.md
index 0cee61b0cfcb..ee9d187638fa 100644
--- a/UPGRADE-4.0.md
+++ b/UPGRADE-4.0.md
@@ -535,11 +535,11 @@ FrameworkBundle
     first argument.
 
  * `RouterDebugCommand::__construct()` now requires an instance of
-   `Symfony\Component\Routing\RouterInteface` as
+   `Symfony\Component\Routing\RouterInterface` as
     first argument.
 
  * `RouterMatchCommand::__construct()` now requires an instance of
-   `Symfony\Component\Routing\RouterInteface` as
+   `Symfony\Component\Routing\RouterInterface` as
     first argument.
 
  * `TranslationDebugCommand::__construct()` now requires an instance of
@@ -627,7 +627,7 @@ HttpKernel
        # ...
 
        # explicit commands registration
-       AppBundle\Command:
+       AppBundle\Command\:
            resource: '../../src/AppBundle/Command/*'
            tags: ['console.command']
    ```
diff --git a/src/Symfony/Bridge/Doctrine/ExpressionLanguage/DoctrineParserCache.php b/src/Symfony/Bridge/Doctrine/ExpressionLanguage/DoctrineParserCache.php
index 9440147f2393..1bc22ce7aa63 100644
--- a/src/Symfony/Bridge/Doctrine/ExpressionLanguage/DoctrineParserCache.php
+++ b/src/Symfony/Bridge/Doctrine/ExpressionLanguage/DoctrineParserCache.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Bridge\Doctrine\ExpressionLanguage;
 
-@trigger_error('The '.__NAMESPACE__.'\DoctrineParserCache class is deprecated since version 3.2 and will be removed in 4.0. Use the Symfony\Component\Cache\Adapter\DoctrineAdapter class instead.', E_USER_DEPRECATED);
+@trigger_error('The '.__NAMESPACE__.'\DoctrineParserCache class is deprecated since Symfony 3.2 and will be removed in 4.0. Use the Symfony\Component\Cache\Adapter\DoctrineAdapter class instead.', E_USER_DEPRECATED);
 
 use Doctrine\Common\Cache\Cache;
 use Symfony\Component\ExpressionLanguage\ParsedExpression;
diff --git a/src/Symfony/Bridge/Doctrine/Form/ChoiceList/DoctrineChoiceLoader.php b/src/Symfony/Bridge/Doctrine/Form/ChoiceList/DoctrineChoiceLoader.php
index f23d878db2f6..0073fb6c1749 100644
--- a/src/Symfony/Bridge/Doctrine/Form/ChoiceList/DoctrineChoiceLoader.php
+++ b/src/Symfony/Bridge/Doctrine/Form/ChoiceList/DoctrineChoiceLoader.php
@@ -51,7 +51,7 @@ public function __construct($manager, $class, $idReader = null, $objectLoader =
     {
         // BC to be removed and replace with type hints in 4.0
         if ($manager instanceof ChoiceListFactoryInterface) {
-            @trigger_error(sprintf('Passing a ChoiceListFactoryInterface to %s is deprecated since version 3.1 and will no longer be supported in 4.0. You should either call "%s::loadChoiceList" or override it to return a ChoiceListInterface.', __CLASS__, __CLASS__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Passing a ChoiceListFactoryInterface to %s is deprecated since Symfony 3.1 and will no longer be supported in 4.0. You should either call "%s::loadChoiceList" or override it to return a ChoiceListInterface.', __CLASS__, __CLASS__), E_USER_DEPRECATED);
 
             // Provide a BC layer since $factory has changed
             // form first to last argument as of 3.1
diff --git a/src/Symfony/Bridge/Doctrine/Form/EventListener/MergeDoctrineCollectionListener.php b/src/Symfony/Bridge/Doctrine/Form/EventListener/MergeDoctrineCollectionListener.php
index 511479ef1e0a..277becb18e2e 100644
--- a/src/Symfony/Bridge/Doctrine/Form/EventListener/MergeDoctrineCollectionListener.php
+++ b/src/Symfony/Bridge/Doctrine/Form/EventListener/MergeDoctrineCollectionListener.php
@@ -47,7 +47,7 @@ public function onSubmit(FormEvent $event)
     {
         if ($this->bc) {
             // onBind() has been overridden from a child class
-            @trigger_error('The onBind() method is deprecated since version 3.1 and will be removed in 4.0. Use the onSubmit() method instead.', E_USER_DEPRECATED);
+            @trigger_error('The onBind() method is deprecated since Symfony 3.1 and will be removed in 4.0. Use the onSubmit() method instead.', E_USER_DEPRECATED);
 
             if (!$this->bcLayer) {
                 // If parent::onBind() has not been called, then logic has been executed
diff --git a/src/Symfony/Bridge/Doctrine/HttpFoundation/DbalSessionHandler.php b/src/Symfony/Bridge/Doctrine/HttpFoundation/DbalSessionHandler.php
index 6036636f5c46..a02437dab30f 100644
--- a/src/Symfony/Bridge/Doctrine/HttpFoundation/DbalSessionHandler.php
+++ b/src/Symfony/Bridge/Doctrine/HttpFoundation/DbalSessionHandler.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Bridge\Doctrine\HttpFoundation;
 
-@trigger_error(sprintf('The class %s is deprecated since version 3.4 and will be removed in 4.0. Use Symfony\Component\HttpFoundation\Session\Storage\Handler\PdoSessionHandler instead.', DbalSessionHandler::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The class %s is deprecated since Symfony 3.4 and will be removed in 4.0. Use Symfony\Component\HttpFoundation\Session\Storage\Handler\PdoSessionHandler instead.', DbalSessionHandler::class), E_USER_DEPRECATED);
 
 use Doctrine\DBAL\Connection;
 use Doctrine\DBAL\Driver\DriverException;
diff --git a/src/Symfony/Bridge/Doctrine/HttpFoundation/DbalSessionHandlerSchema.php b/src/Symfony/Bridge/Doctrine/HttpFoundation/DbalSessionHandlerSchema.php
index 7af50a65074f..0696abef602c 100644
--- a/src/Symfony/Bridge/Doctrine/HttpFoundation/DbalSessionHandlerSchema.php
+++ b/src/Symfony/Bridge/Doctrine/HttpFoundation/DbalSessionHandlerSchema.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Bridge\Doctrine\HttpFoundation;
 
-@trigger_error(sprintf('The class %s is deprecated since version 3.4 and will be removed in 4.0. Use Symfony\Component\HttpFoundation\Session\Storage\Handler\PdoSessionHandler::createTable instead.', DbalSessionHandlerSchema::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The class %s is deprecated since Symfony 3.4 and will be removed in 4.0. Use Symfony\Component\HttpFoundation\Session\Storage\Handler\PdoSessionHandler::createTable instead.', DbalSessionHandlerSchema::class), E_USER_DEPRECATED);
 
 use Doctrine\DBAL\Schema\Schema;
 
diff --git a/src/Symfony/Bridge/Doctrine/LICENSE b/src/Symfony/Bridge/Doctrine/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Bridge/Doctrine/LICENSE
+++ b/src/Symfony/Bridge/Doctrine/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Bridge/Doctrine/ManagerRegistry.php b/src/Symfony/Bridge/Doctrine/ManagerRegistry.php
index af5ccaa1ab64..ae3618d75b4d 100644
--- a/src/Symfony/Bridge/Doctrine/ManagerRegistry.php
+++ b/src/Symfony/Bridge/Doctrine/ManagerRegistry.php
@@ -12,7 +12,6 @@
 namespace Symfony\Bridge\Doctrine;
 
 use ProxyManager\Proxy\LazyLoadingInterface;
-use Psr\Container\ContainerInterface;
 use Symfony\Component\DependencyInjection\Container;
 use Symfony\Component\DependencyInjection\ContainerAwareInterface;
 use Symfony\Component\DependencyInjection\ContainerInterface as SymfonyContainerInterface;
@@ -26,7 +25,7 @@
 abstract class ManagerRegistry extends AbstractManagerRegistry implements ContainerAwareInterface
 {
     /**
-     * @var ContainerInterface
+     * @var Container
      */
     protected $container;
 
@@ -36,7 +35,7 @@ abstract class ManagerRegistry extends AbstractManagerRegistry implements Contai
      */
     public function setContainer(SymfonyContainerInterface $container = null)
     {
-        @trigger_error(sprintf('The "%s()" method is deprecated since version 3.4 and will be removed in 4.0. Inject a PSR-11 container using the constructor instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 3.4 and will be removed in 4.0. Inject a PSR-11 container using the constructor instead.', __METHOD__), E_USER_DEPRECATED);
 
         $this->container = $container;
     }
@@ -75,7 +74,7 @@ function (&$wrappedInstance, LazyLoadingInterface $manager) use ($name) {
                     $name = $this->aliases[$name];
                 }
                 if (isset($this->fileMap[$name])) {
-                    $wrappedInstance = $this->load($this->fileMap[$name], false);
+                    $wrappedInstance = $this->load($this->fileMap[$name]);
                 } else {
                     $method = !isset($this->methodMap[$name]) ? 'get'.strtr($name, $this->underscoreMap).'Service' : $this->methodMap[$name];
                     $wrappedInstance = $this->{$method}(false);
diff --git a/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/CompilerPass/RegisterMappingsPassTest.php b/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/CompilerPass/RegisterMappingsPassTest.php
index ed76f8db68df..692ee89e4bed 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/CompilerPass/RegisterMappingsPassTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/DependencyInjection/CompilerPass/RegisterMappingsPassTest.php
@@ -15,8 +15,7 @@ class RegisterMappingsPassTest extends TestCase
      */
     public function testNoDriverParmeterException()
     {
-        $container = $this->createBuilder(array(
-        ));
+        $container = $this->createBuilder();
         $this->process($container, array(
             'manager.param.one',
             'manager.param.two',
diff --git a/src/Symfony/Bridge/Doctrine/Tests/Form/ChoiceList/DoctrineChoiceLoaderTest.php b/src/Symfony/Bridge/Doctrine/Tests/Form/ChoiceList/DoctrineChoiceLoaderTest.php
index dfe2b00cdfd5..2ab9eac24491 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/Form/ChoiceList/DoctrineChoiceLoaderTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/Form/ChoiceList/DoctrineChoiceLoaderTest.php
@@ -19,12 +19,18 @@
 use Symfony\Bridge\Doctrine\Form\ChoiceList\EntityLoaderInterface;
 use Symfony\Bridge\Doctrine\Form\ChoiceList\IdReader;
 use Symfony\Component\Form\ChoiceList\ArrayChoiceList;
+use Symfony\Component\Form\ChoiceList\Factory\ChoiceListFactoryInterface;
 
 /**
  * @author Bernhard Schussek <bschussek@gmail.com>
  */
 class DoctrineChoiceLoaderTest extends TestCase
 {
+    /**
+     * @var ChoiceListFactoryInterface|\PHPUnit_Framework_MockObject_MockObject
+     */
+    private $factory;
+
     /**
      * @var ObjectManager|\PHPUnit_Framework_MockObject_MockObject
      */
diff --git a/src/Symfony/Bridge/Doctrine/Tests/Form/Type/EntityTypeTest.php b/src/Symfony/Bridge/Doctrine/Tests/Form/Type/EntityTypeTest.php
index c41629b4dea9..021371439732 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/Form/Type/EntityTypeTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/Form/Type/EntityTypeTest.php
@@ -31,7 +31,6 @@
 use Symfony\Component\Form\Forms;
 use Symfony\Component\Form\Tests\Extension\Core\Type\BaseTypeTest;
 use Symfony\Component\Form\Tests\Extension\Core\Type\FormTypeTest;
-use Symfony\Component\PropertyAccess\PropertyAccess;
 use Symfony\Bridge\Doctrine\Tests\Fixtures\SingleAssociationToIntIdEntity;
 use Symfony\Bridge\Doctrine\Tests\Fixtures\SingleIntIdNoToStringEntity;
 
@@ -1120,10 +1119,7 @@ public function testLoaderCaching()
 
         $repo = $this->em->getRepository(self::SINGLE_IDENT_CLASS);
 
-        $entityType = new EntityType(
-            $this->emRegistry,
-            PropertyAccess::createPropertyAccessor()
-        );
+        $entityType = new EntityType($this->emRegistry);
 
         $entityTypeGuesser = new DoctrineOrmTypeGuesser($this->emRegistry);
 
@@ -1183,10 +1179,7 @@ public function testLoaderCachingWithParameters()
 
         $repo = $this->em->getRepository(self::SINGLE_IDENT_CLASS);
 
-        $entityType = new EntityType(
-            $this->emRegistry,
-            PropertyAccess::createPropertyAccessor()
-        );
+        $entityType = new EntityType($this->emRegistry);
 
         $entityTypeGuesser = new DoctrineOrmTypeGuesser($this->emRegistry);
 
diff --git a/src/Symfony/Bridge/Doctrine/Tests/PropertyInfo/DoctrineExtractorTest.php b/src/Symfony/Bridge/Doctrine/Tests/PropertyInfo/DoctrineExtractorTest.php
index 2f86ac0dde63..fd6c23279c83 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/PropertyInfo/DoctrineExtractorTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/PropertyInfo/DoctrineExtractorTest.php
@@ -9,7 +9,7 @@
  * file that was distributed with this source code.
  */
 
-namespace Symfony\Bridge\Doctrine\PropertyInfo\Tests;
+namespace Symfony\Bridge\Doctrine\Tests\PropertyInfo;
 
 use Doctrine\DBAL\Types\Type as DBALType;
 use Doctrine\ORM\EntityManager;
diff --git a/src/Symfony/Bridge/Monolog/Formatter/ConsoleFormatter.php b/src/Symfony/Bridge/Monolog/Formatter/ConsoleFormatter.php
index dbf43d51ff4c..f8fdec165cba 100644
--- a/src/Symfony/Bridge/Monolog/Formatter/ConsoleFormatter.php
+++ b/src/Symfony/Bridge/Monolog/Formatter/ConsoleFormatter.php
@@ -57,7 +57,7 @@ public function __construct($options = array())
     {
         // BC Layer
         if (!is_array($options)) {
-            @trigger_error(sprintf('The constructor arguments $format, $dateFormat, $allowInlineLineBreaks, $ignoreEmptyContextAndExtra of "%s" are deprecated since 3.3 and will be removed in 4.0. Use $options instead.', self::class), E_USER_DEPRECATED);
+            @trigger_error(sprintf('The constructor arguments $format, $dateFormat, $allowInlineLineBreaks, $ignoreEmptyContextAndExtra of "%s" are deprecated since Symfony 3.3 and will be removed in 4.0. Use $options instead.', self::class), E_USER_DEPRECATED);
             $args = func_get_args();
             $options = array();
             if (isset($args[0])) {
diff --git a/src/Symfony/Bridge/Monolog/Handler/DebugHandler.php b/src/Symfony/Bridge/Monolog/Handler/DebugHandler.php
index 6032750ff642..342fecc24122 100644
--- a/src/Symfony/Bridge/Monolog/Handler/DebugHandler.php
+++ b/src/Symfony/Bridge/Monolog/Handler/DebugHandler.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Bridge\Monolog\Handler;
 
-@trigger_error('The '.__NAMESPACE__.'\DebugHandler class is deprecated since version 3.2 and will be removed in 4.0. Use Symfony\Bridge\Monolog\Processor\DebugProcessor instead.', E_USER_DEPRECATED);
+@trigger_error('The '.__NAMESPACE__.'\DebugHandler class is deprecated since Symfony 3.2 and will be removed in 4.0. Use Symfony\Bridge\Monolog\Processor\DebugProcessor instead.', E_USER_DEPRECATED);
 
 use Monolog\Logger;
 use Monolog\Handler\TestHandler;
diff --git a/src/Symfony/Bridge/Monolog/LICENSE b/src/Symfony/Bridge/Monolog/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Bridge/Monolog/LICENSE
+++ b/src/Symfony/Bridge/Monolog/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler.php b/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler.php
index a108126a2eed..2f1bd008fa31 100644
--- a/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler.php
+++ b/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler.php
@@ -107,7 +107,7 @@ public static function register($mode = 0)
 
             $trace = debug_backtrace(true);
             $group = 'other';
-
+            $isVendor = false;
             $isWeak = DeprecationErrorHandler::MODE_WEAK === $mode || (DeprecationErrorHandler::MODE_WEAK_VENDORS === $mode && $isVendor = $inVendors($file));
 
             $i = count($trace);
@@ -121,6 +121,11 @@ public static function register($mode = 0)
                     $msg = $parsedMsg['deprecation'];
                     $class = $parsedMsg['class'];
                     $method = $parsedMsg['method'];
+                    // If the deprecation has been triggered via
+                    // \Symfony\Bridge\PhpUnit\Legacy\SymfonyTestsListenerTrait::endTest()
+                    // then we need to use the serialized information to determine
+                    // if the error has been triggered from vendor code.
+                    $isWeak = DeprecationErrorHandler::MODE_WEAK === $mode || (DeprecationErrorHandler::MODE_WEAK_VENDORS === $mode && $isVendor = isset($parsedMsg['triggering_file']) && $inVendors($parsedMsg['triggering_file']));
                 } else {
                     $class = isset($trace[$i]['object']) ? get_class($trace[$i]['object']) : $trace[$i]['class'];
                     $method = $trace[$i]['function'];
@@ -261,7 +266,7 @@ public static function collectDeprecations($outputFile)
 
                 return $ErrorHandler::handleError($type, $msg, $file, $line, $context);
             }
-            $deprecations[] = array(error_reporting(), $msg);
+            $deprecations[] = array(error_reporting(), $msg, $file);
         });
 
         register_shutdown_function(function () use ($outputFile, &$deprecations) {
diff --git a/src/Symfony/Bridge/PhpUnit/LICENSE b/src/Symfony/Bridge/PhpUnit/LICENSE
index 207646a052dc..15fc1c88d330 100644
--- a/src/Symfony/Bridge/PhpUnit/LICENSE
+++ b/src/Symfony/Bridge/PhpUnit/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2014-2017 Fabien Potencier
+Copyright (c) 2014-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerTrait.php b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerTrait.php
index d2ddddf3f23b..63b7cb0c14d8 100644
--- a/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerTrait.php
+++ b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerTrait.php
@@ -272,10 +272,11 @@ public function endTest($test, $time)
             unlink($this->runsInSeparateProcess);
             putenv('SYMFONY_DEPRECATIONS_SERIALIZE');
             foreach ($deprecations ? unserialize($deprecations) : array() as $deprecation) {
+                $error = serialize(array('deprecation' => $deprecation[1], 'class' => $className, 'method' => $test->getName(false), 'triggering_file' => isset($deprecation[2]) ? $deprecation[2] : null));
                 if ($deprecation[0]) {
-                    trigger_error(serialize(array('deprecation' => $deprecation[1], 'class' => $className, 'method' => $test->getName(false))), E_USER_DEPRECATED);
+                    trigger_error($error, E_USER_DEPRECATED);
                 } else {
-                    @trigger_error(serialize(array('deprecation' => $deprecation[1], 'class' => $className, 'method' => $test->getName(false))), E_USER_DEPRECATED);
+                    @trigger_error($error, E_USER_DEPRECATED);
                 }
             }
             $this->runsInSeparateProcess = false;
diff --git a/src/Symfony/Bridge/PhpUnit/composer.json b/src/Symfony/Bridge/PhpUnit/composer.json
index 47f6d7b5e871..24a48b600d1b 100644
--- a/src/Symfony/Bridge/PhpUnit/composer.json
+++ b/src/Symfony/Bridge/PhpUnit/composer.json
@@ -41,6 +41,10 @@
     "extra": {
         "branch-alias": {
             "dev-master": "3.4-dev"
+        },
+        "thanks": {
+            "name": "phpunit/phpunit",
+            "url": "https://github.com/sebastianbergmann/phpunit"
         }
     }
 }
diff --git a/src/Symfony/Bridge/ProxyManager/LICENSE b/src/Symfony/Bridge/ProxyManager/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Bridge/ProxyManager/LICENSE
+++ b/src/Symfony/Bridge/ProxyManager/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Bridge/ProxyManager/LazyProxy/PhpDumper/ProxyDumper.php b/src/Symfony/Bridge/ProxyManager/LazyProxy/PhpDumper/ProxyDumper.php
index 3f31939b2828..1ec900b84bdd 100644
--- a/src/Symfony/Bridge/ProxyManager/LazyProxy/PhpDumper/ProxyDumper.php
+++ b/src/Symfony/Bridge/ProxyManager/LazyProxy/PhpDumper/ProxyDumper.php
@@ -60,10 +60,10 @@ public function getProxyFactoryCode(Definition $definition, $id, $factoryCode =
         }
 
         if (null === $factoryCode) {
-            @trigger_error(sprintf('The "%s()" method expects a third argument defining the code to execute to construct your service since version 3.4, providing it will be required in 4.0.', __METHOD__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('The "%s()" method expects a third argument defining the code to execute to construct your service since Symfony 3.4, providing it will be required in 4.0.', __METHOD__), E_USER_DEPRECATED);
             $factoryCode = '$this->get'.Container::camelize($id).'Service(false)';
         } elseif (false === strpos($factoryCode, '(')) {
-            @trigger_error(sprintf('The "%s()" method expects its third argument to define the code to execute to construct your service since version 3.4, providing it will be required in 4.0.', __METHOD__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('The "%s()" method expects its third argument to define the code to execute to construct your service since Symfony 3.4, providing it will be required in 4.0.', __METHOD__), E_USER_DEPRECATED);
             $factoryCode = "\$this->$factoryCode(false)";
         }
         $proxyClass = $this->getProxyClassName($definition);
diff --git a/src/Symfony/Bridge/Twig/Command/DebugCommand.php b/src/Symfony/Bridge/Twig/Command/DebugCommand.php
index 4a1b4f9714ea..1e45cf4d285a 100644
--- a/src/Symfony/Bridge/Twig/Command/DebugCommand.php
+++ b/src/Symfony/Bridge/Twig/Command/DebugCommand.php
@@ -39,7 +39,7 @@ class DebugCommand extends Command
     public function __construct($twig = null, $projectDir = null)
     {
         if (!$twig instanceof Environment) {
-            @trigger_error(sprintf('Passing a command name as the first argument of "%s" is deprecated since version 3.4 and will be removed in 4.0. If the command was registered by convention, make it a service instead.', __METHOD__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Passing a command name as the first argument of "%s" is deprecated since Symfony 3.4 and will be removed in 4.0. If the command was registered by convention, make it a service instead.', __METHOD__), E_USER_DEPRECATED);
 
             parent::__construct($twig);
 
@@ -54,7 +54,7 @@ public function __construct($twig = null, $projectDir = null)
 
     public function setTwigEnvironment(Environment $twig)
     {
-        @trigger_error(sprintf('Method "%s" is deprecated since version 3.4 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('Method "%s" is deprecated since Symfony 3.4 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
 
         $this->twig = $twig;
     }
@@ -64,7 +64,7 @@ public function setTwigEnvironment(Environment $twig)
      */
     protected function getTwigEnvironment()
     {
-        @trigger_error(sprintf('Method "%s" is deprecated since version 3.4 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('Method "%s" is deprecated since Symfony 3.4 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
 
         return $this->twig;
     }
@@ -105,7 +105,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         if (__CLASS__ !== get_class($this)) {
             $r = new \ReflectionMethod($this, 'getTwigEnvironment');
             if (__CLASS__ !== $r->getDeclaringClass()->getName()) {
-                @trigger_error(sprintf('Usage of method "%s" is deprecated since version 3.4 and will no longer be supported in 4.0. Construct the command with its required arguments instead.', get_class($this).'::getTwigEnvironment'), E_USER_DEPRECATED);
+                @trigger_error(sprintf('Usage of method "%s" is deprecated since Symfony 3.4 and will no longer be supported in 4.0. Construct the command with its required arguments instead.', get_class($this).'::getTwigEnvironment'), E_USER_DEPRECATED);
 
                 $this->twig = $this->getTwigEnvironment();
             }
diff --git a/src/Symfony/Bridge/Twig/Command/LintCommand.php b/src/Symfony/Bridge/Twig/Command/LintCommand.php
index 0190e8f05244..afb1d1bf31cf 100644
--- a/src/Symfony/Bridge/Twig/Command/LintCommand.php
+++ b/src/Symfony/Bridge/Twig/Command/LintCommand.php
@@ -41,7 +41,7 @@ class LintCommand extends Command
     public function __construct($twig = null)
     {
         if (!$twig instanceof Environment) {
-            @trigger_error(sprintf('Passing a command name as the first argument of "%s" is deprecated since version 3.4 and will be removed in 4.0. If the command was registered by convention, make it a service instead.', __METHOD__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Passing a command name as the first argument of "%s" is deprecated since Symfony 3.4 and will be removed in 4.0. If the command was registered by convention, make it a service instead.', __METHOD__), E_USER_DEPRECATED);
 
             parent::__construct($twig);
 
@@ -55,7 +55,7 @@ public function __construct($twig = null)
 
     public function setTwigEnvironment(Environment $twig)
     {
-        @trigger_error(sprintf('Method "%s" is deprecated since version 3.4 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('Method "%s" is deprecated since Symfony 3.4 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
 
         $this->twig = $twig;
     }
@@ -65,7 +65,7 @@ public function setTwigEnvironment(Environment $twig)
      */
     protected function getTwigEnvironment()
     {
-        @trigger_error(sprintf('Method "%s" is deprecated since version 3.4 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('Method "%s" is deprecated since Symfony 3.4 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
 
         return $this->twig;
     }
@@ -106,7 +106,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         if (__CLASS__ !== get_class($this)) {
             $r = new \ReflectionMethod($this, 'getTwigEnvironment');
             if (__CLASS__ !== $r->getDeclaringClass()->getName()) {
-                @trigger_error(sprintf('Usage of method "%s" is deprecated since version 3.4 and will no longer be supported in 4.0. Construct the command with its required arguments instead.', get_class($this).'::getTwigEnvironment'), E_USER_DEPRECATED);
+                @trigger_error(sprintf('Usage of method "%s" is deprecated since Symfony 3.4 and will no longer be supported in 4.0. Construct the command with its required arguments instead.', get_class($this).'::getTwigEnvironment'), E_USER_DEPRECATED);
 
                 $this->twig = $this->getTwigEnvironment();
             }
diff --git a/src/Symfony/Bridge/Twig/Extension/FormExtension.php b/src/Symfony/Bridge/Twig/Extension/FormExtension.php
index 3821dcd85823..e63203f39bd5 100644
--- a/src/Symfony/Bridge/Twig/Extension/FormExtension.php
+++ b/src/Symfony/Bridge/Twig/Extension/FormExtension.php
@@ -39,7 +39,7 @@ class FormExtension extends AbstractExtension implements InitRuntimeInterface
     public function __construct($renderer = null)
     {
         if ($renderer instanceof TwigRendererInterface) {
-            @trigger_error(sprintf('Passing a Twig Form Renderer to the "%s" constructor is deprecated since version 3.2 and won\'t be possible in 4.0. Pass the Twig\Environment to the TwigRendererEngine constructor instead.', static::class), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Passing a Twig Form Renderer to the "%s" constructor is deprecated since Symfony 3.2 and won\'t be possible in 4.0. Pass the Twig\Environment to the TwigRendererEngine constructor instead.', static::class), E_USER_DEPRECATED);
         } elseif (null !== $renderer && !(is_array($renderer) && isset($renderer[0], $renderer[1]) && $renderer[0] instanceof ContainerInterface)) {
             throw new \InvalidArgumentException(sprintf('Passing any arguments the constructor of %s is reserved for internal use.', __CLASS__));
         }
@@ -116,7 +116,7 @@ public function getTests()
     public function __get($name)
     {
         if ('renderer' === $name) {
-            @trigger_error(sprintf('Using the "%s::$renderer" property is deprecated since version 3.2 as it will be removed in 4.0.', __CLASS__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Using the "%s::$renderer" property is deprecated since Symfony 3.2 as it will be removed in 4.0.', __CLASS__), E_USER_DEPRECATED);
 
             if (is_array($this->renderer)) {
                 $renderer = $this->renderer[0]->get($this->renderer[1]);
@@ -136,7 +136,7 @@ public function __get($name)
     public function __set($name, $value)
     {
         if ('renderer' === $name) {
-            @trigger_error(sprintf('Using the "%s::$renderer" property is deprecated since version 3.2 as it will be removed in 4.0.', __CLASS__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Using the "%s::$renderer" property is deprecated since Symfony 3.2 as it will be removed in 4.0.', __CLASS__), E_USER_DEPRECATED);
         }
 
         $this->$name = $value;
@@ -148,7 +148,7 @@ public function __set($name, $value)
     public function __isset($name)
     {
         if ('renderer' === $name) {
-            @trigger_error(sprintf('Using the "%s::$renderer" property is deprecated since version 3.2 as it will be removed in 4.0.', __CLASS__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Using the "%s::$renderer" property is deprecated since Symfony 3.2 as it will be removed in 4.0.', __CLASS__), E_USER_DEPRECATED);
         }
 
         return isset($this->$name);
@@ -160,7 +160,7 @@ public function __isset($name)
     public function __unset($name)
     {
         if ('renderer' === $name) {
-            @trigger_error(sprintf('Using the "%s::$renderer" property is deprecated since version 3.2 as it will be removed in 4.0.', __CLASS__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Using the "%s::$renderer" property is deprecated since Symfony 3.2 as it will be removed in 4.0.', __CLASS__), E_USER_DEPRECATED);
         }
 
         unset($this->$name);
diff --git a/src/Symfony/Bridge/Twig/Extension/YamlExtension.php b/src/Symfony/Bridge/Twig/Extension/YamlExtension.php
index 79418fb8ff9f..164b5383e740 100644
--- a/src/Symfony/Bridge/Twig/Extension/YamlExtension.php
+++ b/src/Symfony/Bridge/Twig/Extension/YamlExtension.php
@@ -44,7 +44,7 @@ public function encode($input, $inline = 0, $dumpObjects = 0)
 
         if (defined('Symfony\Component\Yaml\Yaml::DUMP_OBJECT')) {
             if (is_bool($dumpObjects)) {
-                @trigger_error('Passing a boolean flag to toggle object support is deprecated since version 3.1 and will be removed in 4.0. Use the Yaml::DUMP_OBJECT flag instead.', E_USER_DEPRECATED);
+                @trigger_error('Passing a boolean flag to toggle object support is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::DUMP_OBJECT flag instead.', E_USER_DEPRECATED);
 
                 $flags = $dumpObjects ? Yaml::DUMP_OBJECT : 0;
             } else {
diff --git a/src/Symfony/Bridge/Twig/Form/TwigRenderer.php b/src/Symfony/Bridge/Twig/Form/TwigRenderer.php
index 82521f70cd10..b4cb7faa4d10 100644
--- a/src/Symfony/Bridge/Twig/Form/TwigRenderer.php
+++ b/src/Symfony/Bridge/Twig/Form/TwigRenderer.php
@@ -15,7 +15,7 @@
 use Symfony\Component\Security\Csrf\CsrfTokenManagerInterface;
 use Twig\Environment;
 
-@trigger_error(sprintf('The %s class is deprecated since version 3.4 and will be removed in 4.0. Use %s instead.', TwigRenderer::class, FormRenderer::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The %s class is deprecated since Symfony 3.4 and will be removed in 4.0. Use %s instead.', TwigRenderer::class, FormRenderer::class), E_USER_DEPRECATED);
 
 /**
  * @author Bernhard Schussek <bschussek@gmail.com>
diff --git a/src/Symfony/Bridge/Twig/Form/TwigRendererEngine.php b/src/Symfony/Bridge/Twig/Form/TwigRendererEngine.php
index 59120ee552d7..711291db2f75 100644
--- a/src/Symfony/Bridge/Twig/Form/TwigRendererEngine.php
+++ b/src/Symfony/Bridge/Twig/Form/TwigRendererEngine.php
@@ -34,7 +34,7 @@ class TwigRendererEngine extends AbstractRendererEngine implements TwigRendererE
     public function __construct(array $defaultThemes = array(), Environment $environment = null)
     {
         if (null === $environment) {
-            @trigger_error(sprintf('Not passing a Twig Environment as the second argument for "%s" constructor is deprecated since version 3.2 and won\'t be possible in 4.0.', static::class), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Not passing a Twig Environment as the second argument for "%s" constructor is deprecated since Symfony 3.2 and won\'t be possible in 4.0.', static::class), E_USER_DEPRECATED);
         }
 
         parent::__construct($defaultThemes);
@@ -49,7 +49,7 @@ public function __construct(array $defaultThemes = array(), Environment $environ
     public function setEnvironment(Environment $environment)
     {
         if ($this->environment) {
-            @trigger_error(sprintf('The "%s()" method is deprecated since version 3.3 and will be removed in 4.0. Pass the Twig Environment as second argument of the constructor instead.', __METHOD__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 3.3 and will be removed in 4.0. Pass the Twig Environment as second argument of the constructor instead.', __METHOD__), E_USER_DEPRECATED);
         }
 
         $this->environment = $environment;
diff --git a/src/Symfony/Bridge/Twig/LICENSE b/src/Symfony/Bridge/Twig/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Bridge/Twig/LICENSE
+++ b/src/Symfony/Bridge/Twig/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Bridge/Twig/Tests/Command/LintCommandTest.php b/src/Symfony/Bridge/Twig/Tests/Command/LintCommandTest.php
index db87d6e131fd..9ef18640684f 100644
--- a/src/Symfony/Bridge/Twig/Tests/Command/LintCommandTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Command/LintCommandTest.php
@@ -70,7 +70,7 @@ public function testLintFileCompileTimeException()
 
     /**
      * @group legacy
-     * @expectedDeprecation Passing a command name as the first argument of "Symfony\Bridge\Twig\Command\LintCommand::__construct" is deprecated since version 3.4 and will be removed in 4.0. If the command was registered by convention, make it a service instead.
+     * @expectedDeprecation Passing a command name as the first argument of "Symfony\Bridge\Twig\Command\LintCommand::__construct" is deprecated since Symfony 3.4 and will be removed in 4.0. If the command was registered by convention, make it a service instead.
      * @expectedException \RuntimeException
      * @expectedExceptionMessage The Twig environment needs to be set.
      */
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/TranslationExtensionTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/TranslationExtensionTest.php
index b20e0c3905a3..88a39b1ea960 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/TranslationExtensionTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/TranslationExtensionTest.php
@@ -88,18 +88,35 @@ public function getTransTests()
             array('{% trans into "fr"%}Hello{% endtrans %}', 'Hello'),
 
             // transchoice
-            array('{% transchoice count from "messages" %}{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples{% endtranschoice %}',
-                'There is no apples', array('count' => 0)),
-            array('{% transchoice count %}{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples{% endtranschoice %}',
-                'There is 5 apples', array('count' => 5)),
-            array('{% transchoice count %}{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples (%name%){% endtranschoice %}',
-                'There is 5 apples (Symfony)', array('count' => 5, 'name' => 'Symfony')),
-            array('{% transchoice count with { \'%name%\': \'Symfony\' } %}{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples (%name%){% endtranschoice %}',
-                'There is 5 apples (Symfony)', array('count' => 5)),
-            array('{% transchoice count into "fr"%}{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples{% endtranschoice %}',
-                'There is no apples', array('count' => 0)),
-            array('{% transchoice 5 into "fr"%}{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples{% endtranschoice %}',
-                'There is 5 apples'),
+            array(
+                '{% transchoice count from "messages" %}{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples{% endtranschoice %}',
+                'There is no apples',
+                array('count' => 0),
+            ),
+            array(
+                '{% transchoice count %}{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples{% endtranschoice %}',
+                'There is 5 apples',
+                array('count' => 5),
+            ),
+            array(
+                '{% transchoice count %}{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples (%name%){% endtranschoice %}',
+                'There is 5 apples (Symfony)',
+                array('count' => 5, 'name' => 'Symfony'),
+            ),
+            array(
+                '{% transchoice count with { \'%name%\': \'Symfony\' } %}{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples (%name%){% endtranschoice %}',
+                'There is 5 apples (Symfony)',
+                array('count' => 5),
+            ),
+            array(
+                '{% transchoice count into "fr"%}{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples{% endtranschoice %}',
+                'There is no apples',
+                array('count' => 0),
+            ),
+            array(
+                '{% transchoice 5 into "fr"%}{0} There is no apples|{1} There is one apple|]1,Inf] There is %count% apples{% endtranschoice %}',
+                'There is 5 apples',
+            ),
 
             // trans filter
             array('{{ "Hello"|trans }}', 'Hello'),
diff --git a/src/Symfony/Bridge/Twig/UndefinedCallableHandler.php b/src/Symfony/Bridge/Twig/UndefinedCallableHandler.php
new file mode 100644
index 000000000000..2a86b0d53679
--- /dev/null
+++ b/src/Symfony/Bridge/Twig/UndefinedCallableHandler.php
@@ -0,0 +1,76 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\Twig;
+
+use Twig\Error\SyntaxError;
+
+/**
+ * @internal
+ */
+class UndefinedCallableHandler
+{
+    private static $filterComponents = array(
+        'humanize' => 'form',
+        'trans' => 'translation',
+        'transchoice' => 'translation',
+        'yaml_encode' => 'yaml',
+        'yaml_dump' => 'yaml',
+    );
+
+    private static $functionComponents = array(
+        'asset' => 'asset',
+        'asset_version' => 'asset',
+        'dump' => 'debug-bundle',
+        'expression' => 'expression-language',
+        'form_widget' => 'form',
+        'form_errors' => 'form',
+        'form_label' => 'form',
+        'form_row' => 'form',
+        'form_rest' => 'form',
+        'form' => 'form',
+        'form_start' => 'form',
+        'form_end' => 'form',
+        'csrf_token' => 'form',
+        'logout_url' => 'security-http',
+        'logout_path' => 'security-http',
+        'is_granted' => 'security-core',
+        'link' => 'web-link',
+        'preload' => 'web-link',
+        'dns_prefetch' => 'web-link',
+        'preconnect' => 'web-link',
+        'prefetch' => 'web-link',
+        'prerender' => 'web-link',
+        'workflow_can' => 'workflow',
+        'workflow_transitions' => 'workflow',
+        'workflow_has_marked_place' => 'workflow',
+        'workflow_marked_places' => 'workflow',
+    );
+
+    public static function onUndefinedFilter($name)
+    {
+        if (!isset(self::$filterComponents[$name])) {
+            return false;
+        }
+
+        // Twig will append the source context to the message, so that it will end up being like "[...] Unknown filter "%s" in foo.html.twig on line 123."
+        throw new SyntaxError(sprintf('Did you forget to run "composer require symfony/%s"? Unknown filter "%s".', $name, self::$filterComponents[$name]));
+    }
+
+    public static function onUndefinedFunction($name)
+    {
+        if (!isset(self::$functionComponents[$name])) {
+            return false;
+        }
+
+        throw new SyntaxError(sprintf('Did you forget to run "composer require symfony/%s"? Unknown function "%s".', $name, self::$functionComponents[$name]));
+    }
+}
diff --git a/src/Symfony/Bundle/DebugBundle/LICENSE b/src/Symfony/Bundle/DebugBundle/LICENSE
index 207646a052dc..15fc1c88d330 100644
--- a/src/Symfony/Bundle/DebugBundle/LICENSE
+++ b/src/Symfony/Bundle/DebugBundle/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2014-2017 Fabien Potencier
+Copyright (c) 2014-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Bundle/FrameworkBundle/CHANGELOG.md b/src/Symfony/Bundle/FrameworkBundle/CHANGELOG.md
index 4be5961a9cfd..9d63e08afe8b 100644
--- a/src/Symfony/Bundle/FrameworkBundle/CHANGELOG.md
+++ b/src/Symfony/Bundle/FrameworkBundle/CHANGELOG.md
@@ -44,10 +44,10 @@ CHANGELOG
    `Symfony\Component\EventDispatcher\EventDispatcherInterface` as
     first argument
  * `RouterDebugCommand::__construct()` now takes an instance of
-   `Symfony\Component\Routing\RouterInteface` as
+   `Symfony\Component\Routing\RouterInterface` as
     first argument
  * `RouterMatchCommand::__construct()` now takes an instance of
-   `Symfony\Component\Routing\RouterInteface` as
+   `Symfony\Component\Routing\RouterInterface` as
     first argument
  * `TranslationDebugCommand::__construct()` now takes an instance of
    `Symfony\Component\Translation\TranslatorInterface` as
diff --git a/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/ClassCacheCacheWarmer.php b/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/ClassCacheCacheWarmer.php
index 381f12d82bd6..058d22bcb239 100644
--- a/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/ClassCacheCacheWarmer.php
+++ b/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/ClassCacheCacheWarmer.php
@@ -28,7 +28,7 @@ class ClassCacheCacheWarmer implements CacheWarmerInterface
     public function __construct(array $declaredClasses = null)
     {
         if (\PHP_VERSION_ID >= 70000) {
-            @trigger_error('The '.__CLASS__.' class is deprecated since version 3.3 and will be removed in 4.0.', E_USER_DEPRECATED);
+            @trigger_error('The '.__CLASS__.' class is deprecated since Symfony 3.3 and will be removed in 4.0.', E_USER_DEPRECATED);
         }
 
         $this->declaredClasses = $declaredClasses;
diff --git a/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/RouterCacheWarmer.php b/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/RouterCacheWarmer.php
index f6adb32d0f9e..795fdbfc514a 100644
--- a/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/RouterCacheWarmer.php
+++ b/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/RouterCacheWarmer.php
@@ -38,7 +38,7 @@ public function __construct($container)
             $this->router = $container->get('router'); // For BC, the $router property must be populated in the constructor
         } elseif ($container instanceof RouterInterface) {
             $this->router = $container;
-            @trigger_error(sprintf('Using a "%s" as first argument of %s is deprecated since version 3.4 and will be unsupported in version 4.0. Use a %s instead.', RouterInterface::class, __CLASS__, ContainerInterface::class), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Using a "%s" as first argument of %s is deprecated since Symfony 3.4 and will be unsupported in version 4.0. Use a %s instead.', RouterInterface::class, __CLASS__, ContainerInterface::class), E_USER_DEPRECATED);
         } else {
             throw new \InvalidArgumentException(sprintf('%s only accepts instance of Psr\Container\ContainerInterface as first argument.', __CLASS__));
         }
diff --git a/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/TranslationsCacheWarmer.php b/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/TranslationsCacheWarmer.php
index 29ce0d13225d..7d9ec9f9d45c 100644
--- a/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/TranslationsCacheWarmer.php
+++ b/src/Symfony/Bundle/FrameworkBundle/CacheWarmer/TranslationsCacheWarmer.php
@@ -39,7 +39,7 @@ public function __construct($container)
             $this->container = $container;
         } elseif ($container instanceof TranslatorInterface) {
             $this->translator = $container;
-            @trigger_error(sprintf('Using a "%s" as first argument of %s is deprecated since version 3.4 and will be unsupported in version 4.0. Use a %s instead.', TranslatorInterface::class, __CLASS__, ContainerInterface::class), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Using a "%s" as first argument of %s is deprecated since Symfony 3.4 and will be unsupported in version 4.0. Use a %s instead.', TranslatorInterface::class, __CLASS__, ContainerInterface::class), E_USER_DEPRECATED);
         } else {
             throw new \InvalidArgumentException(sprintf('%s only accepts instance of Psr\Container\ContainerInterface as first argument.', __CLASS__));
         }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/AssetsInstallCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/AssetsInstallCommand.php
index 69fb05780429..4aaf847ff453 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/AssetsInstallCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/AssetsInstallCommand.php
@@ -45,7 +45,7 @@ class AssetsInstallCommand extends ContainerAwareCommand
     public function __construct($filesystem = null)
     {
         if (!$filesystem instanceof Filesystem) {
-            @trigger_error(sprintf('%s() expects an instance of "%s" as first argument since version 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.', __METHOD__, Filesystem::class), E_USER_DEPRECATED);
+            @trigger_error(sprintf('%s() expects an instance of "%s" as first argument since Symfony 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.', __METHOD__, Filesystem::class), E_USER_DEPRECATED);
 
             parent::__construct($filesystem);
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/CacheClearCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/CacheClearCommand.php
index f252014e266e..5437b0bcc23b 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/CacheClearCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/CacheClearCommand.php
@@ -46,7 +46,7 @@ class CacheClearCommand extends ContainerAwareCommand
     public function __construct($cacheClearer = null, Filesystem $filesystem = null)
     {
         if (!$cacheClearer instanceof CacheClearerInterface) {
-            @trigger_error(sprintf('%s() expects an instance of "%s" as first argument since version 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.', __METHOD__, CacheClearerInterface::class), E_USER_DEPRECATED);
+            @trigger_error(sprintf('%s() expects an instance of "%s" as first argument since Symfony 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.', __METHOD__, CacheClearerInterface::class), E_USER_DEPRECATED);
 
             parent::__construct($cacheClearer);
 
@@ -93,6 +93,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
             $realCacheDir = $this->getContainer()->getParameter('kernel.cache_dir');
         }
 
+        $fs = $this->filesystem;
         $io = new SymfonyStyle($input, $output);
 
         $kernel = $this->getApplication()->getKernel();
@@ -100,25 +101,36 @@ protected function execute(InputInterface $input, OutputInterface $output)
         // the old cache dir name must not be longer than the real one to avoid exceeding
         // the maximum length of a directory or file path within it (esp. Windows MAX_PATH)
         $oldCacheDir = substr($realCacheDir, 0, -1).('~' === substr($realCacheDir, -1) ? '+' : '~');
+        $fs->remove($oldCacheDir);
 
         if (!is_writable($realCacheDir)) {
             throw new \RuntimeException(sprintf('Unable to write in the "%s" directory', $realCacheDir));
         }
 
-        if ($this->filesystem->exists($oldCacheDir)) {
-            $this->filesystem->remove($oldCacheDir);
-        }
-
         $io->comment(sprintf('Clearing the cache for the <info>%s</info> environment with debug <info>%s</info>', $kernel->getEnvironment(), var_export($kernel->isDebug(), true)));
         $this->cacheClearer->clear($realCacheDir);
 
         // The current event dispatcher is stale, let's not use it anymore
         $this->getApplication()->setDispatcher(new EventDispatcher());
 
-        if ($input->getOption('no-warmup')) {
-            $this->filesystem->rename($realCacheDir, $oldCacheDir);
-        } else {
-            $this->warmupCache($input, $output, $realCacheDir, $oldCacheDir);
+        $containerDir = new \ReflectionObject($kernel->getContainer());
+        $containerDir = basename(dirname($containerDir->getFileName()));
+
+        // the warmup cache dir name must have the same length as the real one
+        // to avoid the many problems in serialized resources files
+        $warmupDir = substr($realCacheDir, 0, -1).('_' === substr($realCacheDir, -1) ? '-' : '_');
+
+        if ($output->isVerbose() && $fs->exists($warmupDir)) {
+            $io->comment('Clearing outdated warmup directory...');
+        }
+        $fs->remove($warmupDir);
+        $fs->mkdir($warmupDir);
+
+        if (!$input->getOption('no-warmup')) {
+            if ($output->isVerbose()) {
+                $io->comment('Warming up cache...');
+            }
+            $this->warmup($warmupDir, $realCacheDir, !$input->getOption('no-optional-warmers'));
 
             if ($this->warning) {
                 @trigger_error($this->warning, E_USER_DEPRECATED);
@@ -127,12 +139,22 @@ protected function execute(InputInterface $input, OutputInterface $output)
             }
         }
 
+        $containerDir = $fs->exists($warmupDir.'/'.$containerDir) ? false : $containerDir;
+
+        $fs->rename($realCacheDir, $oldCacheDir);
+        $fs->rename($warmupDir, $realCacheDir);
+
+        if ($containerDir) {
+            $fs->rename($oldCacheDir.'/'.$containerDir, $realCacheDir.'/'.$containerDir);
+            touch($realCacheDir.'/'.$containerDir.'.legacy');
+        }
+
         if ($output->isVerbose()) {
             $io->comment('Removing old cache directory...');
         }
 
         try {
-            $this->filesystem->remove($oldCacheDir);
+            $fs->remove($oldCacheDir);
         } catch (IOException $e) {
             $io->warning($e->getMessage());
         }
@@ -144,34 +166,6 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $io->success(sprintf('Cache for the "%s" environment (debug=%s) was successfully cleared.', $kernel->getEnvironment(), var_export($kernel->isDebug(), true)));
     }
 
-    private function warmupCache(InputInterface $input, OutputInterface $output, $realCacheDir, $oldCacheDir)
-    {
-        $io = new SymfonyStyle($input, $output);
-
-        // the warmup cache dir name must have the same length than the real one
-        // to avoid the many problems in serialized resources files
-        $realCacheDir = realpath($realCacheDir);
-        $warmupDir = substr($realCacheDir, 0, -1).('_' === substr($realCacheDir, -1) ? '-' : '_');
-
-        if ($this->filesystem->exists($warmupDir)) {
-            if ($output->isVerbose()) {
-                $io->comment('Clearing outdated warmup directory...');
-            }
-            $this->filesystem->remove($warmupDir);
-        }
-
-        if ($output->isVerbose()) {
-            $io->comment('Warming up cache...');
-        }
-        $this->warmup($warmupDir, $realCacheDir, !$input->getOption('no-optional-warmers'));
-
-        $this->filesystem->rename($realCacheDir, $oldCacheDir);
-        if ('\\' === DIRECTORY_SEPARATOR) {
-            sleep(1);  // workaround for Windows PHP rename bug
-        }
-        $this->filesystem->rename($warmupDir, $realCacheDir);
-    }
-
     /**
      * @param string $warmupDir
      * @param string $realCacheDir
@@ -185,7 +179,7 @@ protected function warmup($warmupDir, $realCacheDir, $enableOptionalWarmers = tr
             $realKernel->reboot($warmupDir);
             $tempKernel = $realKernel;
         } else {
-            $this->warning = 'Calling "cache:clear" with a kernel that does not implement "Symfony\Component\HttpKernel\RebootableInterface" is deprecated since version 3.4 and will be unsupported in 4.0.';
+            $this->warning = 'Calling "cache:clear" with a kernel that does not implement "Symfony\Component\HttpKernel\RebootableInterface" is deprecated since Symfony 3.4 and will be unsupported in 4.0.';
             $realKernelClass = get_class($realKernel);
             $namespace = '';
             if (false !== $pos = strrpos($realKernelClass, '\\')) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/CachePoolClearCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/CachePoolClearCommand.php
index 04719b75d7fd..24ab64cc9c69 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/CachePoolClearCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/CachePoolClearCommand.php
@@ -35,7 +35,7 @@ final class CachePoolClearCommand extends ContainerAwareCommand
     public function __construct($poolClearer = null)
     {
         if (!$poolClearer instanceof Psr6CacheClearer) {
-            @trigger_error(sprintf('%s() expects an instance of "%s" as first argument since version 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.', __METHOD__, Psr6CacheClearer::class), E_USER_DEPRECATED);
+            @trigger_error(sprintf('%s() expects an instance of "%s" as first argument since Symfony 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.', __METHOD__, Psr6CacheClearer::class), E_USER_DEPRECATED);
 
             parent::__construct($poolClearer);
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/CacheWarmupCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/CacheWarmupCommand.php
index 1ff474e96939..a5874df23467 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/CacheWarmupCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/CacheWarmupCommand.php
@@ -36,7 +36,7 @@ class CacheWarmupCommand extends ContainerAwareCommand
     public function __construct($cacheWarmer = null)
     {
         if (!$cacheWarmer instanceof CacheWarmerAggregate) {
-            @trigger_error(sprintf('Passing a command name as the first argument of "%s" is deprecated since version 3.4 and will be removed in 4.0. If the command was registered by convention, make it a service instead.', __METHOD__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Passing a command name as the first argument of "%s" is deprecated since Symfony 3.4 and will be removed in 4.0. If the command was registered by convention, make it a service instead.', __METHOD__), E_USER_DEPRECATED);
 
             parent::__construct($cacheWarmer);
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/EventDispatcherDebugCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/EventDispatcherDebugCommand.php
index 51f769b21dd3..2eee99377d1c 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/EventDispatcherDebugCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/EventDispatcherDebugCommand.php
@@ -37,7 +37,7 @@ class EventDispatcherDebugCommand extends ContainerAwareCommand
     public function __construct($dispatcher = null)
     {
         if (!$dispatcher instanceof EventDispatcherInterface) {
-            @trigger_error(sprintf('%s() expects an instance of "%s" as first argument since version 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.', __METHOD__, EventDispatcherInterface::class), E_USER_DEPRECATED);
+            @trigger_error(sprintf('%s() expects an instance of "%s" as first argument since Symfony 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.', __METHOD__, EventDispatcherInterface::class), E_USER_DEPRECATED);
 
             parent::__construct($dispatcher);
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/RouterDebugCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/RouterDebugCommand.php
index 929264139a17..5533fae74b76 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/RouterDebugCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/RouterDebugCommand.php
@@ -41,7 +41,7 @@ class RouterDebugCommand extends ContainerAwareCommand
     public function __construct($router = null)
     {
         if (!$router instanceof RouterInterface) {
-            @trigger_error(sprintf('%s() expects an instance of "%s" as first argument since version 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.', __METHOD__, RouterInterface::class), E_USER_DEPRECATED);
+            @trigger_error(sprintf('%s() expects an instance of "%s" as first argument since Symfony 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.', __METHOD__, RouterInterface::class), E_USER_DEPRECATED);
 
             parent::__construct($router);
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/RouterMatchCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/RouterMatchCommand.php
index 1e2720669fd6..06cae3e7cf91 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/RouterMatchCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/RouterMatchCommand.php
@@ -39,7 +39,7 @@ class RouterMatchCommand extends ContainerAwareCommand
     public function __construct($router = null)
     {
         if (!$router instanceof RouterInterface) {
-            @trigger_error(sprintf('%s() expects an instance of "%s" as first argument since version 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.', __METHOD__, RouterInterface::class), E_USER_DEPRECATED);
+            @trigger_error(sprintf('%s() expects an instance of "%s" as first argument since Symfony 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.', __METHOD__, RouterInterface::class), E_USER_DEPRECATED);
 
             parent::__construct($router);
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/TranslationDebugCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/TranslationDebugCommand.php
index 2ea2b122ffb7..22d154872cf3 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/TranslationDebugCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/TranslationDebugCommand.php
@@ -51,7 +51,7 @@ class TranslationDebugCommand extends ContainerAwareCommand
     public function __construct($translator = null, TranslationReaderInterface $reader = null, ExtractorInterface $extractor = null, $defaultTransPath = null, $defaultViewsPath = null)
     {
         if (!$translator instanceof TranslatorInterface) {
-            @trigger_error(sprintf('%s() expects an instance of "%s" as first argument since version 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.', __METHOD__, TranslatorInterface::class), E_USER_DEPRECATED);
+            @trigger_error(sprintf('%s() expects an instance of "%s" as first argument since Symfony 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.', __METHOD__, TranslatorInterface::class), E_USER_DEPRECATED);
 
             parent::__construct($translator);
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/TranslationUpdateCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/TranslationUpdateCommand.php
index 768617c82696..d2c88d9c9fd0 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/TranslationUpdateCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/TranslationUpdateCommand.php
@@ -54,7 +54,7 @@ class TranslationUpdateCommand extends ContainerAwareCommand
     public function __construct($writer = null, TranslationReaderInterface $reader = null, ExtractorInterface $extractor = null, $defaultLocale = null, $defaultTransPath = null, $defaultViewsPath = null)
     {
         if (!$writer instanceof TranslationWriterInterface) {
-            @trigger_error(sprintf('%s() expects an instance of "%s" as first argument since version 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.', __METHOD__, TranslationWriterInterface::class), E_USER_DEPRECATED);
+            @trigger_error(sprintf('%s() expects an instance of "%s" as first argument since Symfony 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.', __METHOD__, TranslationWriterInterface::class), E_USER_DEPRECATED);
 
             parent::__construct($writer);
 
@@ -206,7 +206,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $prefix = $input->getOption('prefix');
         // @deprecated since version 3.4, to be removed in 4.0 along with the --no-prefix option
         if ($input->getOption('no-prefix')) {
-            @trigger_error('The "--no-prefix" option is deprecated since version 3.4 and will be removed in 4.0. Use the "--prefix" option with an empty string as value instead.', E_USER_DEPRECATED);
+            @trigger_error('The "--no-prefix" option is deprecated since Symfony 3.4 and will be removed in 4.0. Use the "--prefix" option with an empty string as value instead.', E_USER_DEPRECATED);
             $prefix = '';
         }
         $this->extractor->setPrefix($prefix);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/XliffLintCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/XliffLintCommand.php
index 2093c3d26230..534ab36c34a6 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/XliffLintCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/XliffLintCommand.php
@@ -29,7 +29,7 @@ class XliffLintCommand extends BaseLintCommand
     public function __construct($name = null, $directoryIteratorProvider = null, $isReadableProvider = null)
     {
         if (func_num_args()) {
-            @trigger_error(sprintf('Passing a constructor argument in "%s" is deprecated since version 3.4 and will be removed in 4.0. If the command was registered by convention, make it a service instead.', __METHOD__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Passing a constructor argument in "%s" is deprecated since Symfony 3.4 and will be removed in 4.0. If the command was registered by convention, make it a service instead.', __METHOD__), E_USER_DEPRECATED);
         }
 
         if (null === $directoryIteratorProvider) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/YamlLintCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/YamlLintCommand.php
index e54a0058cabc..2ca60ca0673c 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Command/YamlLintCommand.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/YamlLintCommand.php
@@ -28,7 +28,7 @@ class YamlLintCommand extends BaseLintCommand
     public function __construct($name = null, $directoryIteratorProvider = null, $isReadableProvider = null)
     {
         if (func_num_args()) {
-            @trigger_error(sprintf('Passing a constructor argument in "%s" is deprecated since version 3.4 and will be removed in 4.0. If the command was registered by convention, make it a service instead.', __METHOD__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Passing a constructor argument in "%s" is deprecated since Symfony 3.4 and will be removed in 4.0. If the command was registered by convention, make it a service instead.', __METHOD__), E_USER_DEPRECATED);
         }
 
         if (null === $directoryIteratorProvider) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Controller/ControllerTrait.php b/src/Symfony/Bundle/FrameworkBundle/Controller/ControllerTrait.php
index fab8f5659613..b5843319c750 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Controller/ControllerTrait.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Controller/ControllerTrait.php
@@ -194,7 +194,7 @@ protected function file($file, $fileName = null, $disposition = ResponseHeaderBa
     protected function addFlash($type, $message)
     {
         if (!$this->container->has('session')) {
-            throw new \LogicException('You can not use the addFlash method if sessions are disabled.');
+            throw new \LogicException('You can not use the addFlash method if sessions are disabled. Enable them in "config/packages/framework.yaml".');
         }
 
         $this->container->get('session')->getFlashBag()->add($type, $message);
@@ -215,7 +215,7 @@ protected function addFlash($type, $message)
     protected function isGranted($attributes, $subject = null)
     {
         if (!$this->container->has('security.authorization_checker')) {
-            throw new \LogicException('The SecurityBundle is not registered in your application.');
+            throw new \LogicException('The SecurityBundle is not registered in your application. Try running "composer require symfony/security-bundle".');
         }
 
         return $this->container->get('security.authorization_checker')->isGranted($attributes, $subject);
@@ -261,7 +261,7 @@ protected function renderView($view, array $parameters = array())
         }
 
         if (!$this->container->has('twig')) {
-            throw new \LogicException('You can not use the "renderView" method if the Templating Component or the Twig Bundle are not available.');
+            throw new \LogicException('You can not use the "renderView" method if the Templating Component or the Twig Bundle are not available. Try running "composer require symfony/twig-bundle".');
         }
 
         return $this->container->get('twig')->render($view, $parameters);
@@ -285,7 +285,7 @@ protected function render($view, array $parameters = array(), Response $response
         } elseif ($this->container->has('twig')) {
             $content = $this->container->get('twig')->render($view, $parameters);
         } else {
-            throw new \LogicException('You can not use the "render" method if the Templating Component or the Twig Bundle are not available.');
+            throw new \LogicException('You can not use the "render" method if the Templating Component or the Twig Bundle are not available. Try running "composer require symfony/twig-bundle".');
         }
 
         if (null === $response) {
@@ -323,7 +323,7 @@ protected function stream($view, array $parameters = array(), StreamedResponse $
                 $twig->display($view, $parameters);
             };
         } else {
-            throw new \LogicException('You can not use the "stream" method if the Templating Component or the Twig Bundle are not available.');
+            throw new \LogicException('You can not use the "stream" method if the Templating Component or the Twig Bundle are not available. Try running "composer require symfony/twig-bundle".');
         }
 
         if (null === $response) {
@@ -366,10 +366,16 @@ protected function createNotFoundException($message = 'Not Found', \Exception $p
      *
      * @return AccessDeniedException
      *
+     * @throws \LogicException If the Security component is not available
+     *
      * @final since version 3.4
      */
     protected function createAccessDeniedException($message = 'Access Denied.', \Exception $previous = null)
     {
+        if (!class_exists(AccessDeniedException::class)) {
+            throw new \LogicException('You can not use the "createAccessDeniedException" method if the Security component is not available. Try running "composer require symfony/security-bundle".');
+        }
+
         return new AccessDeniedException($message, $previous);
     }
 
@@ -416,7 +422,7 @@ protected function createFormBuilder($data = null, array $options = array())
     protected function getDoctrine()
     {
         if (!$this->container->has('doctrine')) {
-            throw new \LogicException('The DoctrineBundle is not registered in your application.');
+            throw new \LogicException('The DoctrineBundle is not registered in your application. Try running "composer require symfony/orm-pack".');
         }
 
         return $this->container->get('doctrine');
@@ -436,7 +442,7 @@ protected function getDoctrine()
     protected function getUser()
     {
         if (!$this->container->has('security.token_storage')) {
-            throw new \LogicException('The SecurityBundle is not registered in your application.');
+            throw new \LogicException('The SecurityBundle is not registered in your application. Try running "composer require symfony/security-bundle".');
         }
 
         if (null === $token = $this->container->get('security.token_storage')->getToken()) {
@@ -464,7 +470,7 @@ protected function getUser()
     protected function isCsrfTokenValid($id, $token)
     {
         if (!$this->container->has('security.csrf.token_manager')) {
-            throw new \LogicException('CSRF protection is not enabled in your application.');
+            throw new \LogicException('CSRF protection is not enabled in your application. Enable it with the "csrf_protection" key in "config/packages/framework.yaml".');
         }
 
         return $this->container->get('security.csrf.token_manager')->isTokenValid(new CsrfToken($id, $token));
diff --git a/src/Symfony/Bundle/FrameworkBundle/Controller/RedirectController.php b/src/Symfony/Bundle/FrameworkBundle/Controller/RedirectController.php
index 6edee88ce5dd..003555b12d03 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Controller/RedirectController.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Controller/RedirectController.php
@@ -49,7 +49,7 @@ public function __construct(UrlGeneratorInterface $router = null, $httpPort = nu
      */
     public function setContainer(ContainerInterface $container = null)
     {
-        @trigger_error(sprintf('The "%s()" method is deprecated since version 3.4 and will be removed in 4.0. Inject an UrlGeneratorInterface using the constructor instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 3.4 and will be removed in 4.0. Inject an UrlGeneratorInterface using the constructor instead.', __METHOD__), E_USER_DEPRECATED);
 
         $this->container = $container;
         $this->router = $container->get('router');
diff --git a/src/Symfony/Bundle/FrameworkBundle/Controller/TemplateController.php b/src/Symfony/Bundle/FrameworkBundle/Controller/TemplateController.php
index 5d13355208dc..f72d556f60b5 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Controller/TemplateController.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Controller/TemplateController.php
@@ -45,7 +45,7 @@ public function __construct(Environment $twig = null, EngineInterface $templatin
      */
     public function setContainer(ContainerInterface $container = null)
     {
-        @trigger_error(sprintf('The "%s()" method is deprecated since version 3.4 and will be removed in 4.0. Inject a Twig Environment or an EngineInterface using the constructor instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 3.4 and will be removed in 4.0. Inject a Twig Environment or an EngineInterface using the constructor instead.', __METHOD__), E_USER_DEPRECATED);
 
         if ($container->has('templating')) {
             $this->templating = $container->get('templating');
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddCacheClearerPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddCacheClearerPass.php
index f650826be04c..25a16060ff7e 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddCacheClearerPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddCacheClearerPass.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler;
 
-@trigger_error(sprintf('The %s class is deprecated since version 3.4 and will be removed in 4.0. Use tagged iterator arguments instead.', AddCacheClearerPass::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The %s class is deprecated since Symfony 3.4 and will be removed in 4.0. Use tagged iterator arguments instead.', AddCacheClearerPass::class), E_USER_DEPRECATED);
 
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddCacheWarmerPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddCacheWarmerPass.php
index 7a1b2e98bba1..c60eecdb4953 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddCacheWarmerPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddCacheWarmerPass.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler;
 
-@trigger_error(sprintf('The %s class is deprecated since version 3.4 and will be removed in 4.0. Use tagged iterator arguments instead.', AddCacheWarmerPass::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The %s class is deprecated since Symfony 3.4 and will be removed in 4.0. Use tagged iterator arguments instead.', AddCacheWarmerPass::class), E_USER_DEPRECATED);
 
 use Symfony\Component\DependencyInjection\Compiler\PriorityTaggedServiceTrait;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddConsoleCommandPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddConsoleCommandPass.php
index d423648d05b1..7e261bb1d372 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddConsoleCommandPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddConsoleCommandPass.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler;
 
-@trigger_error(sprintf('%s is deprecated since version 3.3 and will be removed in 4.0. Use Symfony\Component\Console\DependencyInjection\AddConsoleCommandPass instead.', AddConsoleCommandPass::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('%s is deprecated since Symfony 3.3 and will be removed in 4.0. Use Symfony\Component\Console\DependencyInjection\AddConsoleCommandPass instead.', AddConsoleCommandPass::class), E_USER_DEPRECATED);
 
 use Symfony\Component\Console\DependencyInjection\AddConsoleCommandPass as BaseAddConsoleCommandPass;
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddConstraintValidatorsPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddConstraintValidatorsPass.php
index 3b89fa2651a8..a118afb8241b 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddConstraintValidatorsPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddConstraintValidatorsPass.php
@@ -13,7 +13,7 @@
 
 use Symfony\Component\Validator\DependencyInjection\AddConstraintValidatorsPass as BaseAddConstraintValidatorsPass;
 
-@trigger_error(sprintf('The %s class is deprecated since version 3.3 and will be removed in 4.0. Use %s instead.', AddConstraintValidatorsPass::class, BaseAddConstraintValidatorsPass::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The %s class is deprecated since Symfony 3.3 and will be removed in 4.0. Use %s instead.', AddConstraintValidatorsPass::class, BaseAddConstraintValidatorsPass::class), E_USER_DEPRECATED);
 
 /**
  * @deprecated since version 3.3, to be removed in 4.0. Use {@link BaseAddConstraintValidatorsPass} instead
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddValidatorInitializersPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddValidatorInitializersPass.php
index d71d87c1faad..5824de478bdc 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddValidatorInitializersPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/AddValidatorInitializersPass.php
@@ -13,7 +13,7 @@
 
 use Symfony\Component\Validator\DependencyInjection\AddValidatorInitializersPass as BaseAddValidatorsInitializerPass;
 
-@trigger_error(sprintf('The %s class is deprecated since version 3.3 and will be removed in 4.0. Use %s instead.', AddValidatorInitializersPass::class, BaseAddValidatorsInitializerPass::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The %s class is deprecated since Symfony 3.3 and will be removed in 4.0. Use %s instead.', AddValidatorInitializersPass::class, BaseAddValidatorsInitializerPass::class), E_USER_DEPRECATED);
 
 /**
  * @deprecated since version 3.3, to be removed in 4.0. Use {@link BaseAddValidatorInitializersPass} instead
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/CompilerDebugDumpPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/CompilerDebugDumpPass.php
index 714d01d01d5e..3425f0750f17 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/CompilerDebugDumpPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/CompilerDebugDumpPass.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler;
 
-@trigger_error(sprintf('The %s class is deprecated since version 3.3 and will be removed in 4.0.', CompilerDebugDumpPass::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The %s class is deprecated since Symfony 3.3 and will be removed in 4.0.', CompilerDebugDumpPass::class), E_USER_DEPRECATED);
 
 use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/ConfigCachePass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/ConfigCachePass.php
index eae4311a345a..567ec19eaae4 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/ConfigCachePass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/ConfigCachePass.php
@@ -13,7 +13,7 @@
 
 use Symfony\Component\Config\DependencyInjection\ConfigCachePass as BaseConfigCachePass;
 
-@trigger_error(sprintf('The %s class is deprecated since version 3.3 and will be removed in 4.0. Use tagged iterator arguments instead.', ConfigCachePass::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The %s class is deprecated since Symfony 3.3 and will be removed in 4.0. Use tagged iterator arguments instead.', ConfigCachePass::class), E_USER_DEPRECATED);
 
 /**
  * Adds services tagged config_cache.resource_checker to the config_cache_factory service, ordering them by priority.
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/ControllerArgumentValueResolverPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/ControllerArgumentValueResolverPass.php
index 3f2baf6871c1..11ba453dd3c2 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/ControllerArgumentValueResolverPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/ControllerArgumentValueResolverPass.php
@@ -13,7 +13,7 @@
 
 use Symfony\Component\HttpKernel\DependencyInjection\ControllerArgumentValueResolverPass as BaseControllerArgumentValueResolverPass;
 
-@trigger_error(sprintf('The %s class is deprecated since version 3.3 and will be removed in 4.0. Use %s instead.', ControllerArgumentValueResolverPass::class, BaseControllerArgumentValueResolverPass::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The %s class is deprecated since Symfony 3.3 and will be removed in 4.0. Use %s instead.', ControllerArgumentValueResolverPass::class, BaseControllerArgumentValueResolverPass::class), E_USER_DEPRECATED);
 
 /**
  * Gathers and configures the argument value resolvers.
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/FormPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/FormPass.php
index fdbfd4297b22..a30f469709c8 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/FormPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/FormPass.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler;
 
-@trigger_error(sprintf('The %s class is deprecated since version 3.3 and will be removed in 4.0. Use Symfony\Component\Form\DependencyInjection\FormPass instead.', FormPass::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The %s class is deprecated since Symfony 3.3 and will be removed in 4.0. Use Symfony\Component\Form\DependencyInjection\FormPass instead.', FormPass::class), E_USER_DEPRECATED);
 
 use Symfony\Component\DependencyInjection\Compiler\PriorityTaggedServiceTrait;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/PropertyInfoPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/PropertyInfoPass.php
index 3c73f9bf4950..aa1cd6e576a3 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/PropertyInfoPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/PropertyInfoPass.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler;
 
-@trigger_error(sprintf('The %s class is deprecated since version 3.3 and will be removed in 4.0. Use Symfony\Component\PropertyInfo\DependencyInjection\PropertyInfoPass instead.', PropertyInfoPass::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The %s class is deprecated since Symfony 3.3 and will be removed in 4.0. Use Symfony\Component\PropertyInfo\DependencyInjection\PropertyInfoPass instead.', PropertyInfoPass::class), E_USER_DEPRECATED);
 
 use Symfony\Component\PropertyInfo\DependencyInjection\PropertyInfoPass as BasePropertyInfoPass;
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/RoutingResolverPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/RoutingResolverPass.php
index bac782115b55..87af59bd0fc0 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/RoutingResolverPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/RoutingResolverPass.php
@@ -13,7 +13,7 @@
 
 use Symfony\Component\Routing\DependencyInjection\RoutingResolverPass as BaseRoutingResolverPass;
 
-@trigger_error(sprintf('The %s class is deprecated since version 3.3 and will be removed in 4.0. Use %s instead.', RoutingResolverPass::class, BaseRoutingResolverPass::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The %s class is deprecated since Symfony 3.3 and will be removed in 4.0. Use %s instead.', RoutingResolverPass::class, BaseRoutingResolverPass::class), E_USER_DEPRECATED);
 
 /**
  * Adds tagged routing.loader services to routing.resolver service.
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/SerializerPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/SerializerPass.php
index d30e8eba43a1..44b546674e8e 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/SerializerPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/SerializerPass.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler;
 
-@trigger_error(sprintf('The %s class is deprecated since version 3.3 and will be removed in 4.0. Use Symfony\Component\Serializer\DependencyInjection\SerializerPass instead.', SerializerPass::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The %s class is deprecated since Symfony 3.3 and will be removed in 4.0. Use Symfony\Component\Serializer\DependencyInjection\SerializerPass instead.', SerializerPass::class), E_USER_DEPRECATED);
 
 use Symfony\Component\Serializer\DependencyInjection\SerializerPass as BaseSerializerPass;
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/TranslationDumperPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/TranslationDumperPass.php
index 38e52e8cd9c8..9ddf312bc41a 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/TranslationDumperPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/TranslationDumperPass.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler;
 
-@trigger_error(sprintf('The %s class is deprecated since version 3.4 and will be removed in 4.0. Use Symfony\Component\Translation\DependencyInjection\TranslationDumperPass instead.', TranslationDumperPass::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The %s class is deprecated since Symfony 3.4 and will be removed in 4.0. Use Symfony\Component\Translation\DependencyInjection\TranslationDumperPass instead.', TranslationDumperPass::class), E_USER_DEPRECATED);
 
 use Symfony\Component\Translation\DependencyInjection\TranslationDumperPass as BaseTranslationDumperPass;
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/TranslationExtractorPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/TranslationExtractorPass.php
index 985809eeb16e..8de309dc05fe 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/TranslationExtractorPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/TranslationExtractorPass.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler;
 
-@trigger_error(sprintf('The %s class is deprecated since version 3.4 and will be removed in 4.0. Use Symfony\Component\Translation\DependencyInjection\TranslationExtractorPass instead.', TranslationExtractorPass::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The %s class is deprecated since Symfony 3.4 and will be removed in 4.0. Use Symfony\Component\Translation\DependencyInjection\TranslationExtractorPass instead.', TranslationExtractorPass::class), E_USER_DEPRECATED);
 
 use Symfony\Component\Translation\DependencyInjection\TranslationExtractorPass as BaseTranslationExtractorPass;
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/TranslatorPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/TranslatorPass.php
index 7bba4629371c..9f6a0ab9d2dc 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/TranslatorPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/TranslatorPass.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler;
 
-@trigger_error(sprintf('The %s class is deprecated since version 3.4 and will be removed in 4.0. Use Symfony\Component\Translation\DependencyInjection\TranslatorPass instead.', TranslatorPass::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The %s class is deprecated since Symfony 3.4 and will be removed in 4.0. Use Symfony\Component\Translation\DependencyInjection\TranslatorPass instead.', TranslatorPass::class), E_USER_DEPRECATED);
 
 use Symfony\Component\Translation\DependencyInjection\TranslatorPass as BaseTranslatorPass;
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/ValidateWorkflowsPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/ValidateWorkflowsPass.php
index 6599f1f1a030..4a85e4ed465e 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/ValidateWorkflowsPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/ValidateWorkflowsPass.php
@@ -13,7 +13,7 @@
 
 use Symfony\Component\Workflow\DependencyInjection\ValidateWorkflowsPass as BaseValidateWorkflowsPass;
 
-@trigger_error(sprintf('The %s class is deprecated since version 3.3 and will be removed in 4.0. Use %s instead.', ValidateWorkflowsPass::class, BaseValidateWorkflowsPass::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The %s class is deprecated since Symfony 3.3 and will be removed in 4.0. Use %s instead.', ValidateWorkflowsPass::class, BaseValidateWorkflowsPass::class), E_USER_DEPRECATED);
 
 /**
  * @author Tobias Nyholm <tobias.nyholm@gmail.com>
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
index 6f972ceaf466..b461df4740c0 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
@@ -36,6 +36,7 @@
 use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
 use Symfony\Component\DependencyInjection\Exception\LogicException;
 use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
+use Symfony\Component\DependencyInjection\Parameter;
 use Symfony\Component\DependencyInjection\Reference;
 use Symfony\Component\DependencyInjection\ServiceSubscriberInterface;
 use Symfony\Component\EventDispatcher\ContainerAwareEventDispatcher;
@@ -825,7 +826,7 @@ private function registerSessionConfiguration(array $config, ContainerBuilder $c
 
         // session storage
         $container->setAlias('session.storage', $config['storage_id'])->setPrivate(true);
-        $options = array();
+        $options = array('cache_limiter' => '0');
         foreach (array('name', 'cookie_lifetime', 'cookie_path', 'cookie_domain', 'cookie_secure', 'cookie_httponly', 'use_cookies', 'gc_maxlifetime', 'gc_probability', 'gc_divisor', 'use_strict_mode') as $key) {
             if (isset($config[$key])) {
                 $options[$key] = $config[$key];
@@ -1155,9 +1156,6 @@ private function registerTranslatorConfiguration(array $config, ContainerBuilder
             if ($container->fileExists($dir = $bundle['path'].'/Resources/translations')) {
                 $dirs[] = $dir;
             }
-            if ($container->fileExists($dir = $defaultDir.'/'.$name)) {
-                $dirs[] = $dir;
-            }
             if ($container->fileExists($dir = $rootDir.sprintf('/Resources/%s/translations', $name))) {
                 $dirs[] = $dir;
             }
@@ -1421,7 +1419,7 @@ private function registerSecurityCsrfConfiguration(array $config, ContainerBuild
         }
 
         if (!class_exists('Symfony\Component\Security\Csrf\CsrfToken')) {
-            throw new LogicException('CSRF support cannot be enabled as the Security CSRF component is not installed. Try running "composer require security-csrf".');
+            throw new LogicException('CSRF support cannot be enabled as the Security CSRF component is not installed. Try running "composer require symfony/security-csrf".');
         }
 
         if (!$this->sessionConfigEnabled) {
@@ -1629,7 +1627,7 @@ private function registerLockConfiguration(array $config, ContainerBuilder $cont
 
     private function registerCacheConfiguration(array $config, ContainerBuilder $container)
     {
-        $version = substr(str_replace('/', '-', base64_encode(hash('sha256', uniqid(mt_rand(), true), true))), 0, 22);
+        $version = new Parameter('container.build_id');
         $container->getDefinition('cache.adapter.apcu')->replaceArgument(2, $version);
         $container->getDefinition('cache.adapter.system')->replaceArgument(2, $version);
         $container->getDefinition('cache.adapter.filesystem')->replaceArgument(2, $config['directory']);
diff --git a/src/Symfony/Bundle/FrameworkBundle/EventListener/SessionListener.php b/src/Symfony/Bundle/FrameworkBundle/EventListener/SessionListener.php
index 92db8ece73ee..aa5b4ba6804b 100644
--- a/src/Symfony/Bundle/FrameworkBundle/EventListener/SessionListener.php
+++ b/src/Symfony/Bundle/FrameworkBundle/EventListener/SessionListener.php
@@ -14,7 +14,7 @@
 use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\HttpKernel\EventListener\AbstractSessionListener;
 
-@trigger_error(sprintf('The %s class is deprecated since version 3.3 and will be removed in 4.0. Use Symfony\Component\HttpKernel\EventListener\SessionListener instead.', SessionListener::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The %s class is deprecated since Symfony 3.3 and will be removed in 4.0. Use Symfony\Component\HttpKernel\EventListener\SessionListener instead.', SessionListener::class), E_USER_DEPRECATED);
 
 /**
  * Sets the session in the request.
diff --git a/src/Symfony/Bundle/FrameworkBundle/EventListener/TestSessionListener.php b/src/Symfony/Bundle/FrameworkBundle/EventListener/TestSessionListener.php
index 703be8ff3bed..c6739b60ef48 100644
--- a/src/Symfony/Bundle/FrameworkBundle/EventListener/TestSessionListener.php
+++ b/src/Symfony/Bundle/FrameworkBundle/EventListener/TestSessionListener.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Bundle\FrameworkBundle\EventListener;
 
-@trigger_error(sprintf('The %s class is deprecated since version 3.3 and will be removed in 4.0. Use Symfony\Component\HttpKernel\EventListener\TestSessionListener instead.', TestSessionListener::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The %s class is deprecated since Symfony 3.3 and will be removed in 4.0. Use Symfony\Component\HttpKernel\EventListener\TestSessionListener instead.', TestSessionListener::class), E_USER_DEPRECATED);
 
 use Symfony\Component\HttpKernel\EventListener\AbstractTestSessionListener;
 use Symfony\Component\DependencyInjection\ContainerInterface;
diff --git a/src/Symfony/Bundle/FrameworkBundle/FrameworkBundle.php b/src/Symfony/Bundle/FrameworkBundle/FrameworkBundle.php
index a415894e3448..6b05868aed95 100644
--- a/src/Symfony/Bundle/FrameworkBundle/FrameworkBundle.php
+++ b/src/Symfony/Bundle/FrameworkBundle/FrameworkBundle.php
@@ -64,7 +64,7 @@ public function boot()
         ErrorHandler::register(null, false)->throwAt($this->container->getParameter('debug.error_handler.throw_at'), true);
 
         if ($this->container->hasParameter('kernel.trusted_proxies')) {
-            @trigger_error('The "kernel.trusted_proxies" parameter is deprecated since version 3.3 and will be removed in 4.0. Use the Request::setTrustedProxies() method in your front controller instead.', E_USER_DEPRECATED);
+            @trigger_error('The "kernel.trusted_proxies" parameter is deprecated since Symfony 3.3 and will be removed in 4.0. Use the Request::setTrustedProxies() method in your front controller instead.', E_USER_DEPRECATED);
 
             if ($trustedProxies = $this->container->getParameter('kernel.trusted_proxies')) {
                 Request::setTrustedProxies($trustedProxies, Request::getTrustedHeaderSet());
diff --git a/src/Symfony/Bundle/FrameworkBundle/LICENSE b/src/Symfony/Bundle/FrameworkBundle/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Bundle/FrameworkBundle/LICENSE
+++ b/src/Symfony/Bundle/FrameworkBundle/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/CodeHelper.php b/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/CodeHelper.php
index fc1790633005..f11624be9f2a 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/CodeHelper.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Templating/Helper/CodeHelper.php
@@ -116,7 +116,7 @@ public function fileExcerpt($file, $line)
     {
         if (is_readable($file)) {
             if (extension_loaded('fileinfo')) {
-                $finfo = new \Finfo();
+                $finfo = new \finfo();
 
                 // Check if the file is an application/octet-stream (eg. Phar file) because highlight_file cannot parse these files
                 if ('application/octet-stream' === $finfo->file($file, FILEINFO_MIME_TYPE)) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Test/KernelTestCase.php b/src/Symfony/Bundle/FrameworkBundle/Test/KernelTestCase.php
index 4017b4712ab0..212e5e42308e 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Test/KernelTestCase.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Test/KernelTestCase.php
@@ -44,7 +44,7 @@ abstract class KernelTestCase extends TestCase
      */
     protected static function getPhpUnitXmlDir()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since 3.4 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.4 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
 
         if (!isset($_SERVER['argv']) || false === strpos($_SERVER['argv'][0], 'phpunit')) {
             throw new \RuntimeException('You must override the KernelTestCase::createKernel() method.');
@@ -81,7 +81,7 @@ protected static function getPhpUnitXmlDir()
      */
     private static function getPhpUnitCliConfigArgument()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since 3.4 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.4 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
 
         $dir = null;
         $reversedArgs = array_reverse($_SERVER['argv']);
@@ -122,7 +122,7 @@ protected static function getKernelClass()
 
             return $class;
         } else {
-            @trigger_error(sprintf('Using the KERNEL_DIR environment variable or the automatic guessing based on the phpunit.xml / phpunit.xml.dist file location is deprecated since 3.4. Set the KERNEL_CLASS environment variable to the fully-qualified class name of your Kernel instead. Not setting the KERNEL_CLASS environment variable will throw an exception on 4.0 unless you override the %1$::createKernel() or %1$::getKernelClass() method.', static::class), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Using the KERNEL_DIR environment variable or the automatic guessing based on the phpunit.xml / phpunit.xml.dist file location is deprecated since Symfony 3.4. Set the KERNEL_CLASS environment variable to the fully-qualified class name of your Kernel instead. Not setting the KERNEL_CLASS environment variable will throw an exception on 4.0 unless you override the %1$::createKernel() or %1$::getKernelClass() method.', static::class), E_USER_DEPRECATED);
         }
 
         if (isset($_SERVER['KERNEL_DIR']) || isset($_ENV['KERNEL_DIR'])) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/RouterDebugCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/RouterDebugCommandTest.php
index 1eaca79a8ba7..01a0af75a407 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/RouterDebugCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/RouterDebugCommandTest.php
@@ -49,7 +49,7 @@ public function testDebugInvalidRoute()
 
     /**
      * @group legacy
-     * @expectedDeprecation Symfony\Bundle\FrameworkBundle\Command\RouterDebugCommand::__construct() expects an instance of "Symfony\Component\Routing\RouterInterface" as first argument since version 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.
+     * @expectedDeprecation Symfony\Bundle\FrameworkBundle\Command\RouterDebugCommand::__construct() expects an instance of "Symfony\Component\Routing\RouterInterface" as first argument since Symfony 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.
      */
     public function testLegacyDebugCommand()
     {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/RouterMatchCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/RouterMatchCommandTest.php
index 4a4fe29720c6..d415dcd01037 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/RouterMatchCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/RouterMatchCommandTest.php
@@ -43,8 +43,8 @@ public function testWithNotMatchPath()
 
     /**
      * @group legacy
-     * @expectedDeprecation Symfony\Bundle\FrameworkBundle\Command\RouterMatchCommand::__construct() expects an instance of "Symfony\Component\Routing\RouterInterface" as first argument since version 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.
-     * @expectedDeprecation Symfony\Bundle\FrameworkBundle\Command\RouterDebugCommand::__construct() expects an instance of "Symfony\Component\Routing\RouterInterface" as first argument since version 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.
+     * @expectedDeprecation Symfony\Bundle\FrameworkBundle\Command\RouterMatchCommand::__construct() expects an instance of "Symfony\Component\Routing\RouterInterface" as first argument since Symfony 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.
+     * @expectedDeprecation Symfony\Bundle\FrameworkBundle\Command\RouterDebugCommand::__construct() expects an instance of "Symfony\Component\Routing\RouterInterface" as first argument since Symfony 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.
      */
     public function testLegacyMatchCommand()
     {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationDebugCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationDebugCommandTest.php
index a13d9a41e3bd..67b24296e4f4 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationDebugCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationDebugCommandTest.php
@@ -201,7 +201,7 @@ private function createCommandTester($extractedMessages = array(), $loadedMessag
 
     /**
      * @group legacy
-     * @expectedDeprecation Symfony\Bundle\FrameworkBundle\Command\TranslationDebugCommand::__construct() expects an instance of "Symfony\Component\Translation\TranslatorInterface" as first argument since version 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.
+     * @expectedDeprecation Symfony\Bundle\FrameworkBundle\Command\TranslationDebugCommand::__construct() expects an instance of "Symfony\Component\Translation\TranslatorInterface" as first argument since Symfony 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.
      */
     public function testLegacyDebugCommand()
     {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationUpdateCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationUpdateCommandTest.php
index 8a1b2b668e78..7f90a1d6563e 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationUpdateCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Command/TranslationUpdateCommandTest.php
@@ -189,7 +189,7 @@ private function createCommandTester($extractedMessages = array(), $loadedMessag
 
     /**
      * @group legacy
-     * @expectedDeprecation Symfony\Bundle\FrameworkBundle\Command\TranslationUpdateCommand::__construct() expects an instance of "Symfony\Component\Translation\Writer\TranslationWriterInterface" as first argument since version 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.
+     * @expectedDeprecation Symfony\Bundle\FrameworkBundle\Command\TranslationUpdateCommand::__construct() expects an instance of "Symfony\Component\Translation\Writer\TranslationWriterInterface" as first argument since Symfony 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.
      */
     public function testLegacyUpdateCommand()
     {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
index 52d94b45dbf6..cabccb38c1b3 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
@@ -141,13 +141,6 @@ public function testEsiDisabled()
         $container = $this->createContainerFromFile('esi_disabled');
 
         $this->assertFalse($container->hasDefinition('fragment.renderer.esi'), 'The ESI fragment renderer is not registered');
-    }
-
-    public function testEsiInactive()
-    {
-        $container = $this->createContainerFromFile('default_config');
-
-        $this->assertFalse($container->hasDefinition('fragment.renderer.esi'));
         $this->assertFalse($container->hasDefinition('esi'));
     }
 
@@ -164,6 +157,7 @@ public function testSsiDisabled()
         $container = $this->createContainerFromFile('ssi_disabled');
 
         $this->assertFalse($container->hasDefinition('fragment.renderer.ssi'), 'The SSI fragment renderer is not registered');
+        $this->assertFalse($container->hasDefinition('ssi'));
     }
 
     public function testEsiAndSsiWithoutFragments()
@@ -175,14 +169,6 @@ public function testEsiAndSsiWithoutFragments()
         $this->assertTrue($container->hasDefinition('fragment.renderer.ssi'), 'The SSI fragment renderer is registered');
     }
 
-    public function testSsiInactive()
-    {
-        $container = $this->createContainerFromFile('default_config');
-
-        $this->assertFalse($container->hasDefinition('fragment.renderer.ssi'));
-        $this->assertFalse($container->hasDefinition('ssi'));
-    }
-
     public function testEnabledProfiler()
     {
         $container = $this->createContainerFromFile('profiler');
@@ -1059,6 +1045,9 @@ protected function createContainer(array $data = array())
             'kernel.name' => 'kernel',
             'kernel.root_dir' => __DIR__,
             'kernel.container_class' => 'testContainer',
+            'container.build_hash' => 'Abc1234',
+            'container.build_id' => hash('crc32', 'Abc123423456789'),
+            'container.build_time' => 23456789,
         ), $data)));
     }
 
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/CachePoolClearCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/CachePoolClearCommandTest.php
index 9aa0c019d58a..384beebff1f6 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/CachePoolClearCommandTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/CachePoolClearCommandTest.php
@@ -77,7 +77,7 @@ public function testClearUnexistingPool()
 
     /**
      * @group legacy
-     * @expectedDeprecation Symfony\Bundle\FrameworkBundle\Command\CachePoolClearCommand::__construct() expects an instance of "Symfony\Component\HttpKernel\CacheClearer\Psr6CacheClearer" as first argument since version 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.
+     * @expectedDeprecation Symfony\Bundle\FrameworkBundle\Command\CachePoolClearCommand::__construct() expects an instance of "Symfony\Component\HttpKernel\CacheClearer\Psr6CacheClearer" as first argument since Symfony 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.
      */
     public function testLegacyClearCommand()
     {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Translation/TranslatorTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Translation/TranslatorTest.php
index d2d0f878f642..c2c2364d7097 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Translation/TranslatorTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Translation/TranslatorTest.php
@@ -45,7 +45,7 @@ protected function deleteTmpDir()
 
     /**
      * @group legacy
-     * @expectedDeprecation Method Symfony\Bundle\FrameworkBundle\Translation\Translator::__construct() takes the default locale as 3rd argument since version 3.3. Not passing it is deprecated and will trigger an error in 4.0.
+     * @expectedDeprecation Method Symfony\Bundle\FrameworkBundle\Translation\Translator::__construct() takes the default locale as 3rd argument since Symfony 3.3. Not passing it is deprecated and will trigger an error in 4.0.
      */
     public function testTransWithoutCachingOmittingLocale()
     {
@@ -66,7 +66,7 @@ public function testTransWithoutCachingOmittingLocale()
 
     /**
      * @group legacy
-     * @expectedDeprecation Method Symfony\Bundle\FrameworkBundle\Translation\Translator::__construct() takes the default locale as 3rd argument since version 3.3. Not passing it is deprecated and will trigger an error in 4.0.
+     * @expectedDeprecation Method Symfony\Bundle\FrameworkBundle\Translation\Translator::__construct() takes the default locale as 3rd argument since Symfony 3.3. Not passing it is deprecated and will trigger an error in 4.0.
      */
     public function testTransWithCachingOmittingLocale()
     {
@@ -106,7 +106,7 @@ public function testTransWithCachingOmittingLocale()
 
     /**
      * @group legacy
-     * @expectedDeprecation Method Symfony\Bundle\FrameworkBundle\Translation\Translator::__construct() takes the default locale as 3rd argument since version 3.3. Not passing it is deprecated and will trigger an error in 4.0.
+     * @expectedDeprecation Method Symfony\Bundle\FrameworkBundle\Translation\Translator::__construct() takes the default locale as 3rd argument since Symfony 3.3. Not passing it is deprecated and will trigger an error in 4.0.
      * @expectedException \InvalidArgumentException
      */
     public function testTransWithCachingWithInvalidLocaleOmittingLocale()
@@ -119,7 +119,7 @@ public function testTransWithCachingWithInvalidLocaleOmittingLocale()
 
     /**
      * @group legacy
-     * @expectedDeprecation Method Symfony\Bundle\FrameworkBundle\Translation\Translator::__construct() takes the default locale as 3rd argument since version 3.3. Not passing it is deprecated and will trigger an error in 4.0.
+     * @expectedDeprecation Method Symfony\Bundle\FrameworkBundle\Translation\Translator::__construct() takes the default locale as 3rd argument since Symfony 3.3. Not passing it is deprecated and will trigger an error in 4.0.
      */
     public function testLoadResourcesWithoutCachingOmittingLocale()
     {
@@ -138,7 +138,7 @@ public function testLoadResourcesWithoutCachingOmittingLocale()
 
     /**
      * @group legacy
-     * @expectedDeprecation Method Symfony\Bundle\FrameworkBundle\Translation\Translator::__construct() takes the default locale as 3rd argument since version 3.3. Not passing it is deprecated and will trigger an error in 4.0.
+     * @expectedDeprecation Method Symfony\Bundle\FrameworkBundle\Translation\Translator::__construct() takes the default locale as 3rd argument since Symfony 3.3. Not passing it is deprecated and will trigger an error in 4.0.
      */
     public function testGetDefaultLocaleOmittingLocale()
     {
@@ -167,7 +167,7 @@ public function testGetDefaultLocaleOmittingLocaleWithPsrContainer()
 
     /**
      * @group legacy
-     * @expectedDeprecation Method Symfony\Bundle\FrameworkBundle\Translation\Translator::__construct() takes the default locale as 3rd argument since version 3.3. Not passing it is deprecated and will trigger an error in 4.0.
+     * @expectedDeprecation Method Symfony\Bundle\FrameworkBundle\Translation\Translator::__construct() takes the default locale as 3rd argument since Symfony 3.3. Not passing it is deprecated and will trigger an error in 4.0.
      */
     public function testWarmupOmittingLocale()
     {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Translation/PhpExtractor.php b/src/Symfony/Bundle/FrameworkBundle/Translation/PhpExtractor.php
index f8530875ae19..35bda9ded082 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Translation/PhpExtractor.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Translation/PhpExtractor.php
@@ -13,7 +13,7 @@
 
 use Symfony\Component\Translation\Extractor\PhpExtractor as NewPhpExtractor;
 
-@trigger_error(sprintf('The class "%s" is deprecated since version 3.4 and will be removed in 4.0. Use "%s" instead. ', PhpExtractor::class, NewPhpExtractor::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The class "%s" is deprecated since Symfony 3.4 and will be removed in 4.0. Use "%s" instead. ', PhpExtractor::class, NewPhpExtractor::class), E_USER_DEPRECATED);
 
 /**
  * @deprecated since version 3.4 and will be removed in 4.0. Use Symfony\Component\Translation\Extractor\PhpExtractor instead
diff --git a/src/Symfony/Bundle/FrameworkBundle/Translation/PhpStringTokenParser.php b/src/Symfony/Bundle/FrameworkBundle/Translation/PhpStringTokenParser.php
index 7b472cb4350e..02fd4b56aeee 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Translation/PhpStringTokenParser.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Translation/PhpStringTokenParser.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Bundle\FrameworkBundle\Translation;
 
-@trigger_error(sprintf('The class "%s" is deprecated since version 3.4 and will be removed in 4.0. Use "%s" instead. ', PhpStringTokenParser::class, \Symfony\Component\Translation\Extractor\PhpStringTokenParser::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The class "%s" is deprecated since Symfony 3.4 and will be removed in 4.0. Use "%s" instead. ', PhpStringTokenParser::class, \Symfony\Component\Translation\Extractor\PhpStringTokenParser::class), E_USER_DEPRECATED);
 
 /**
  * @deprecated since version 3.4 and will be removed in 4.0. Use Symfony\Component\Translation\Extractor\PhpStringTokenParser instead
diff --git a/src/Symfony/Bundle/FrameworkBundle/Translation/TranslationLoader.php b/src/Symfony/Bundle/FrameworkBundle/Translation/TranslationLoader.php
index 34881b2d4b20..2431e79ff238 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Translation/TranslationLoader.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Translation/TranslationLoader.php
@@ -14,7 +14,7 @@
 use Symfony\Component\Translation\Reader\TranslationReader;
 use Symfony\Component\Translation\MessageCatalogue;
 
-@trigger_error(sprintf('The class "%s" is deprecated since version 3.4 and will be removed in 4.0. Use "%s" instead. ', TranslationLoader::class, TranslationReader::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The class "%s" is deprecated since Symfony 3.4 and will be removed in 4.0. Use "%s" instead. ', TranslationLoader::class, TranslationReader::class), E_USER_DEPRECATED);
 
 /**
  * @deprecated since version 3.4 and will be removed in 4.0. Use Symfony\Component\Translation\Reader\TranslationReader instead
diff --git a/src/Symfony/Bundle/FrameworkBundle/Translation/Translator.php b/src/Symfony/Bundle/FrameworkBundle/Translation/Translator.php
index cf5272d4e64e..631d14e91b60 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Translation/Translator.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Translation/Translator.php
@@ -48,6 +48,8 @@ class Translator extends BaseTranslator implements WarmableInterface
     private $resources = array();
 
     /**
+     * Constructor.
+     *
      * Available options:
      *
      *   * cache_dir: The cache directory (or null to disable caching)
@@ -73,7 +75,7 @@ public function __construct(ContainerInterface $container, $formatter, $defaultL
             $options = $loaderIds;
             $loaderIds = $defaultLocale;
             $defaultLocale = $container->getParameter('kernel.default_locale');
-            @trigger_error(sprintf('Method %s() takes the default locale as 3rd argument since version 3.3. Not passing it is deprecated and will trigger an error in 4.0.', __METHOD__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Method %s() takes the default locale as 3rd argument since Symfony 3.3. Not passing it is deprecated and will trigger an error in 4.0.', __METHOD__), E_USER_DEPRECATED);
         }
 
         $this->container = $container;
diff --git a/src/Symfony/Bundle/FrameworkBundle/Validator/ConstraintValidatorFactory.php b/src/Symfony/Bundle/FrameworkBundle/Validator/ConstraintValidatorFactory.php
index 44cfcf393e31..26abedbe3da4 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Validator/ConstraintValidatorFactory.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Validator/ConstraintValidatorFactory.php
@@ -18,7 +18,7 @@
 use Symfony\Component\Validator\Exception\UnexpectedTypeException;
 use Symfony\Component\Validator\Exception\ValidatorException;
 
-@trigger_error(sprintf('The %s class is deprecated since version 3.3 and will be removed in 4.0. Use %s instead.', ConstraintValidatorFactory::class, ContainerConstraintValidatorFactory::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The %s class is deprecated since Symfony 3.3 and will be removed in 4.0. Use %s instead.', ConstraintValidatorFactory::class, ContainerConstraintValidatorFactory::class), E_USER_DEPRECATED);
 
 /**
  * Uses a service container to create constraint validators.
diff --git a/src/Symfony/Bundle/FrameworkBundle/composer.json b/src/Symfony/Bundle/FrameworkBundle/composer.json
index e2382363bebc..1f0f233feb0d 100644
--- a/src/Symfony/Bundle/FrameworkBundle/composer.json
+++ b/src/Symfony/Bundle/FrameworkBundle/composer.json
@@ -20,7 +20,7 @@
         "ext-xml": "*",
         "symfony/cache": "~3.4|~4.0",
         "symfony/class-loader": "~3.2",
-        "symfony/dependency-injection": "~3.4|~4.0",
+        "symfony/dependency-injection": "^3.4.3|^4.0.3",
         "symfony/config": "~3.4|~4.0",
         "symfony/event-dispatcher": "~3.4|~4.0",
         "symfony/http-foundation": "^3.3.11|~4.0",
diff --git a/src/Symfony/Bundle/SecurityBundle/Command/InitAclCommand.php b/src/Symfony/Bundle/SecurityBundle/Command/InitAclCommand.php
index 09947b0c7e20..7cb1396d00d2 100644
--- a/src/Symfony/Bundle/SecurityBundle/Command/InitAclCommand.php
+++ b/src/Symfony/Bundle/SecurityBundle/Command/InitAclCommand.php
@@ -20,7 +20,7 @@
 use Doctrine\DBAL\Connection;
 use Doctrine\DBAL\Schema\SchemaException;
 
-@trigger_error(sprintf('Class "%s" is deprecated since version 3.4 and will be removed in 4.0. Use Symfony\Bundle\AclBundle\Command\InitAclCommand instead.', InitAclCommand::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('Class "%s" is deprecated since Symfony 3.4 and will be removed in 4.0. Use Symfony\Bundle\AclBundle\Command\InitAclCommand instead.', InitAclCommand::class), E_USER_DEPRECATED);
 
 /**
  * Installs the tables required by the ACL system.
@@ -89,7 +89,7 @@ protected function configure()
      */
     protected function execute(InputInterface $input, OutputInterface $output)
     {
-        (new SymfonyStyle($input, $output instanceof ConsoleOutputInterface ? $output->getErrorOutput() : $output))->warning('Command "init:acl" is deprecated since version 3.4 and will be removed from SecurityBundle in 4.0. Install symfony/acl-bundle and use "acl:init" instead.');
+        (new SymfonyStyle($input, $output instanceof ConsoleOutputInterface ? $output->getErrorOutput() : $output))->warning('Command "init:acl" is deprecated since Symfony 3.4 and will be removed from SecurityBundle in 4.0. Install symfony/acl-bundle and use "acl:init" instead.');
 
         if (null === $this->connection) {
             $this->connection = $this->getContainer()->get('security.acl.dbal.connection');
diff --git a/src/Symfony/Bundle/SecurityBundle/Command/SetAclCommand.php b/src/Symfony/Bundle/SecurityBundle/Command/SetAclCommand.php
index c0c51eff4e8c..46aacfc26614 100644
--- a/src/Symfony/Bundle/SecurityBundle/Command/SetAclCommand.php
+++ b/src/Symfony/Bundle/SecurityBundle/Command/SetAclCommand.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Bundle\SecurityBundle\Command;
 
-@trigger_error(sprintf('Class "%s" is deprecated since version 3.4 and will be removed in 4.0. Use Symfony\Bundle\AclBundle\Command\SetAclCommand instead.', SetAclCommand::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('Class "%s" is deprecated since Symfony 3.4 and will be removed in 4.0. Use Symfony\Bundle\AclBundle\Command\SetAclCommand instead.', SetAclCommand::class), E_USER_DEPRECATED);
 
 use Symfony\Bundle\FrameworkBundle\Command\ContainerAwareCommand;
 use Symfony\Component\Console\Input\InputArgument;
@@ -117,7 +117,7 @@ protected function configure()
      */
     protected function execute(InputInterface $input, OutputInterface $output)
     {
-        (new SymfonyStyle($input, $output instanceof ConsoleOutputInterface ? $output->getErrorOutput() : $output))->warning('Command "acl:set" is deprecated since version 3.4 and will be removed from SecurityBundle in 4.0. Install symfony/acl-bundle to use this command.');
+        (new SymfonyStyle($input, $output instanceof ConsoleOutputInterface ? $output->getErrorOutput() : $output))->warning('Command "acl:set" is deprecated since Symfony 3.4 and will be removed from SecurityBundle in 4.0. Install symfony/acl-bundle to use this command.');
 
         if (null === $this->provider) {
             $this->provider = $this->getContainer()->get('security.acl.provider');
diff --git a/src/Symfony/Bundle/SecurityBundle/Command/UserPasswordEncoderCommand.php b/src/Symfony/Bundle/SecurityBundle/Command/UserPasswordEncoderCommand.php
index 0df89403a82a..0f6eb839a18e 100644
--- a/src/Symfony/Bundle/SecurityBundle/Command/UserPasswordEncoderCommand.php
+++ b/src/Symfony/Bundle/SecurityBundle/Command/UserPasswordEncoderCommand.php
@@ -40,7 +40,7 @@ class UserPasswordEncoderCommand extends ContainerAwareCommand
     public function __construct(EncoderFactoryInterface $encoderFactory = null, array $userClasses = array())
     {
         if (null === $encoderFactory) {
-            @trigger_error(sprintf('Passing null as the first argument of "%s" is deprecated since version 3.3 and will be removed in 4.0. If the command was registered by convention, make it a service instead.', __METHOD__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Passing null as the first argument of "%s" is deprecated since Symfony 3.3 and will be removed in 4.0. If the command was registered by convention, make it a service instead.', __METHOD__), E_USER_DEPRECATED);
         }
 
         $this->encoderFactory = $encoderFactory;
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/MainConfiguration.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/MainConfiguration.php
index ad076f05e71e..a514ab04a832 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/MainConfiguration.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/MainConfiguration.php
@@ -115,7 +115,7 @@ private function addAclSection(ArrayNodeDefinition $rootNode)
         $rootNode
             ->children()
                 ->arrayNode('acl')
-                    ->setDeprecated('The "security.acl" configuration key is deprecated since version 3.4 and will be removed in 4.0. Install symfony/acl-bundle and use the "acl" key instead.')
+                    ->setDeprecated('The "security.acl" configuration key is deprecated since Symfony 3.4 and will be removed in 4.0. Install symfony/acl-bundle and use the "acl" key instead.')
                     ->children()
                         ->scalarNode('connection')
                             ->defaultNull()
@@ -289,7 +289,7 @@ private function addFirewallsSection(ArrayNodeDefinition $rootNode, array $facto
             ->arrayNode('anonymous')
                 ->canBeUnset()
                 ->children()
-                    ->scalarNode('secret')->defaultValue(uniqid('', true))->end()
+                    ->scalarNode('secret')->defaultNull()->end()
                 ->end()
             ->end()
             ->arrayNode('switch_user')
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/HttpDigestFactory.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/HttpDigestFactory.php
index 57dcb89c1297..43c88024d4b8 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/HttpDigestFactory.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/HttpDigestFactory.php
@@ -28,7 +28,7 @@ class HttpDigestFactory implements SecurityFactoryInterface
     public function __construct($triggerDeprecation = true)
     {
         if ($triggerDeprecation) {
-            @trigger_error(sprintf('The "%s" class and the whole HTTP digest authentication system is deprecated since 3.4 and will be removed in 4.0.', __CLASS__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('The "%s" class and the whole HTTP digest authentication system is deprecated since Symfony 3.4 and will be removed in 4.0.', __CLASS__), E_USER_DEPRECATED);
         }
     }
 
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/UserProvider/InMemoryFactory.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/UserProvider/InMemoryFactory.php
index f226b47cf5cc..d79b96dadcce 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/UserProvider/InMemoryFactory.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/UserProvider/InMemoryFactory.php
@@ -14,6 +14,7 @@
 use Symfony\Component\Config\Definition\Builder\NodeDefinition;
 use Symfony\Component\DependencyInjection\ChildDefinition;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Parameter;
 use Symfony\Component\DependencyInjection\Reference;
 
 /**
@@ -27,13 +28,14 @@ class InMemoryFactory implements UserProviderFactoryInterface
     public function create(ContainerBuilder $container, $id, $config)
     {
         $definition = $container->setDefinition($id, new ChildDefinition('security.user.provider.in_memory'));
+        $defaultPassword = new Parameter('container.build_id');
 
         foreach ($config['users'] as $username => $user) {
             $userId = $id.'_'.$username;
 
             $container
                 ->setDefinition($userId, new ChildDefinition('security.user.provider.in_memory.user'))
-                ->setArguments(array($username, (string) $user['password'], $user['roles']))
+                ->setArguments(array($username, null !== $user['password'] ? (string) $user['password'] : $defaultPassword, $user['roles']))
             ;
 
             $definition->addMethodCall('createUser', array(new Reference($userId)));
@@ -55,7 +57,7 @@ public function addConfiguration(NodeDefinition $node)
                     ->normalizeKeys(false)
                     ->prototype('array')
                         ->children()
-                            ->scalarNode('password')->defaultValue(uniqid('', true))->end()
+                            ->scalarNode('password')->defaultNull()->end()
                             ->arrayNode('roles')
                                 ->beforeNormalization()->ifString()->then(function ($v) { return preg_split('/\s*,\s*/', $v); })->end()
                                 ->prototype('scalar')->end()
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php
index 1bc06b1f4790..a2be3a24be75 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php
@@ -22,6 +22,7 @@
 use Symfony\Component\HttpKernel\DependencyInjection\Extension;
 use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Parameter;
 use Symfony\Component\DependencyInjection\Reference;
 use Symfony\Component\Config\FileLocator;
 use Symfony\Component\Security\Core\Authorization\ExpressionLanguage;
@@ -529,6 +530,10 @@ private function createAuthenticationListeners($container, $id, $firewall, &$aut
 
         // Anonymous
         if (isset($firewall['anonymous'])) {
+            if (null === $firewall['anonymous']['secret']) {
+                $firewall['anonymous']['secret'] = new Parameter('container.build_hash');
+            }
+
             $listenerId = 'security.authentication.listener.anonymous.'.$id;
             $container
                 ->setDefinition($listenerId, new ChildDefinition('security.authentication.listener.anonymous'))
@@ -808,7 +813,7 @@ private function getExpressionLanguage()
      */
     private function getFirstProvider($firewallName, $listenerName, array $providerIds)
     {
-        @trigger_error(sprintf('Listener "%s" on firewall "%s" has no "provider" set but multiple providers exist. Using the first configured provider (%s) is deprecated since 3.4 and will throw an exception in 4.0, set the "provider" key on the firewall instead.', $listenerName, $firewallName, $first = array_keys($providerIds)[0]), E_USER_DEPRECATED);
+        @trigger_error(sprintf('Listener "%s" on firewall "%s" has no "provider" set but multiple providers exist. Using the first configured provider (%s) is deprecated since Symfony 3.4 and will throw an exception in 4.0, set the "provider" key on the firewall instead.', $listenerName, $firewallName, $first = array_keys($providerIds)[0]), E_USER_DEPRECATED);
 
         return $providerIds[$first];
     }
diff --git a/src/Symfony/Bundle/SecurityBundle/EventListener/AclSchemaListener.php b/src/Symfony/Bundle/SecurityBundle/EventListener/AclSchemaListener.php
index 6441fbba6275..9119d9e94da1 100644
--- a/src/Symfony/Bundle/SecurityBundle/EventListener/AclSchemaListener.php
+++ b/src/Symfony/Bundle/SecurityBundle/EventListener/AclSchemaListener.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Bundle\SecurityBundle\EventListener;
 
-@trigger_error(sprintf('Class "%s" is deprecated since version 3.4 and will be removed in 4.0. Use Symfony\Bundle\AclBundle\EventListener\AclSchemaListener instead.', AclSchemaListener::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('Class "%s" is deprecated since Symfony 3.4 and will be removed in 4.0. Use Symfony\Bundle\AclBundle\EventListener\AclSchemaListener instead.', AclSchemaListener::class), E_USER_DEPRECATED);
 
 use Symfony\Component\Security\Acl\Dbal\Schema;
 use Doctrine\ORM\Tools\Event\GenerateSchemaEventArgs;
diff --git a/src/Symfony/Bundle/SecurityBundle/LICENSE b/src/Symfony/Bundle/SecurityBundle/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Bundle/SecurityBundle/LICENSE
+++ b/src/Symfony/Bundle/SecurityBundle/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Bundle/SecurityBundle/Resources/config/security.xml b/src/Symfony/Bundle/SecurityBundle/Resources/config/security.xml
index 4ebbbb85421d..6a4c109af450 100644
--- a/src/Symfony/Bundle/SecurityBundle/Resources/config/security.xml
+++ b/src/Symfony/Bundle/SecurityBundle/Resources/config/security.xml
@@ -62,6 +62,7 @@
         <service id="security.authentication.session_strategy" class="Symfony\Component\Security\Http\Session\SessionAuthenticationStrategy">
             <argument>%security.authentication.session_strategy.strategy%</argument>
         </service>
+        <service id="Symfony\Component\Security\Http\Session\SessionAuthenticationStrategyInterface" alias="security.authentication.session_strategy" />
 
         <service id="security.encoder_factory.generic" class="Symfony\Component\Security\Core\Encoder\EncoderFactory">
             <argument type="collection" />
diff --git a/src/Symfony/Bundle/SecurityBundle/Security/FirewallContext.php b/src/Symfony/Bundle/SecurityBundle/Security/FirewallContext.php
index bfac97d6cfcc..c07e32bc4029 100644
--- a/src/Symfony/Bundle/SecurityBundle/Security/FirewallContext.php
+++ b/src/Symfony/Bundle/SecurityBundle/Security/FirewallContext.php
@@ -47,7 +47,7 @@ public function getConfig()
      */
     public function getContext()
     {
-        @trigger_error(sprintf('Method %s() is deprecated since version 3.3 and will be removed in 4.0. Use %s::getListeners/getExceptionListener() instead.', __METHOD__, __CLASS__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('Method %s() is deprecated since Symfony 3.3 and will be removed in 4.0. Use %s::getListeners/getExceptionListener() instead.', __METHOD__, __CLASS__), E_USER_DEPRECATED);
 
         return array($this->getListeners(), $this->getExceptionListener());
     }
diff --git a/src/Symfony/Bundle/SecurityBundle/Security/FirewallMap.php b/src/Symfony/Bundle/SecurityBundle/Security/FirewallMap.php
index 3af674d652c9..09d49b17bc50 100644
--- a/src/Symfony/Bundle/SecurityBundle/Security/FirewallMap.php
+++ b/src/Symfony/Bundle/SecurityBundle/Security/FirewallMap.php
@@ -47,7 +47,7 @@ public function __construct(ContainerInterface $container, $map)
     public function __get($name)
     {
         if ('map' === $name || 'container' === $name) {
-            @trigger_error(sprintf('Using the "%s::$%s" property is deprecated since version 3.3 as it will be removed/private in 4.0.', __CLASS__, $name), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Using the "%s::$%s" property is deprecated since Symfony 3.3 as it will be removed/private in 4.0.', __CLASS__, $name), E_USER_DEPRECATED);
 
             if ('map' === $name && $this->map instanceof \Traversable) {
                 $this->map = iterator_to_array($this->map);
@@ -63,7 +63,7 @@ public function __get($name)
     public function __set($name, $value)
     {
         if ('map' === $name || 'container' === $name) {
-            @trigger_error(sprintf('Using the "%s::$%s" property is deprecated since version 3.3 as it will be removed/private in 4.0.', __CLASS__, $name), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Using the "%s::$%s" property is deprecated since Symfony 3.3 as it will be removed/private in 4.0.', __CLASS__, $name), E_USER_DEPRECATED);
 
             $set = \Closure::bind(function ($name, $value) { $this->$name = $value; }, $this, parent::class);
             $set($name, $value);
@@ -78,7 +78,7 @@ public function __set($name, $value)
     public function __isset($name)
     {
         if ('map' === $name || 'container' === $name) {
-            @trigger_error(sprintf('Using the "%s::$%s" property is deprecated since version 3.3 as it will be removed/private in 4.0.', __CLASS__, $name), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Using the "%s::$%s" property is deprecated since Symfony 3.3 as it will be removed/private in 4.0.', __CLASS__, $name), E_USER_DEPRECATED);
         }
 
         return isset($this->$name);
@@ -90,7 +90,7 @@ public function __isset($name)
     public function __unset($name)
     {
         if ('map' === $name || 'container' === $name) {
-            @trigger_error(sprintf('Using the "%s::$%s" property is deprecated since version 3.3 as it will be removed/private in 4.0.', __CLASS__, $name), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Using the "%s::$%s" property is deprecated since Symfony 3.3 as it will be removed/private in 4.0.', __CLASS__, $name), E_USER_DEPRECATED);
 
             $unset = \Closure::bind(function ($name) { unset($this->$name); }, $this, parent::class);
             $unset($name);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Debug/TraceableFirewallListenerTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Debug/TraceableFirewallListenerTest.php
index 3ddbb1fd4c43..287ba531f403 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Debug/TraceableFirewallListenerTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Debug/TraceableFirewallListenerTest.php
@@ -9,7 +9,7 @@
  * file that was distributed with this source code.
  */
 
-namespace Symfony\Bundle\SecurityBundle\Tests;
+namespace Symfony\Bundle\SecurityBundle\Tests\Debug;
 
 use PHPUnit\Framework\TestCase;
 use Symfony\Bundle\SecurityBundle\Debug\TraceableFirewallListener;
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/CompleteConfigurationTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/CompleteConfigurationTest.php
index e9c12485dfe3..f23c78877d13 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/CompleteConfigurationTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/CompleteConfigurationTest.php
@@ -38,7 +38,7 @@ public function testRolesHierarchy()
 
     /**
      * @group legacy
-     * @expectedDeprecation The "security.acl" configuration key is deprecated since version 3.4 and will be removed in 4.0. Install symfony/acl-bundle and use the "acl" key instead.
+     * @expectedDeprecation The "security.acl" configuration key is deprecated since Symfony 3.4 and will be removed in 4.0. Install symfony/acl-bundle and use the "acl" key instead.
      */
     public function testRolesHierarchyWithAcl()
     {
@@ -467,7 +467,7 @@ public function testArgon2iEncoder()
 
     /**
      * @group legacy
-     * @expectedDeprecation The "security.acl" configuration key is deprecated since version 3.4 and will be removed in 4.0. Install symfony/acl-bundle and use the "acl" key instead.
+     * @expectedDeprecation The "security.acl" configuration key is deprecated since Symfony 3.4 and will be removed in 4.0. Install symfony/acl-bundle and use the "acl" key instead.
      */
     public function testAcl()
     {
@@ -479,7 +479,7 @@ public function testAcl()
 
     /**
      * @group legacy
-     * @expectedDeprecation The "security.acl" configuration key is deprecated since version 3.4 and will be removed in 4.0. Install symfony/acl-bundle and use the "acl" key instead.
+     * @expectedDeprecation The "security.acl" configuration key is deprecated since Symfony 3.4 and will be removed in 4.0. Install symfony/acl-bundle and use the "acl" key instead.
      */
     public function testCustomAclProvider()
     {
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/SecurityExtensionTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/SecurityExtensionTest.php
index 289c5af20f20..7b5f6685c47b 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/SecurityExtensionTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/SecurityExtensionTest.php
@@ -215,7 +215,7 @@ public function testSwitchUserNotStatelessOnStatelessFirewall()
 
     /**
      * @group legacy
-     * @expectedDeprecation Listener "http_basic" on firewall "default" has no "provider" set but multiple providers exist. Using the first configured provider (first) is deprecated since 3.4 and will throw an exception in 4.0, set the "provider" key on the firewall instead.
+     * @expectedDeprecation Listener "http_basic" on firewall "default" has no "provider" set but multiple providers exist. Using the first configured provider (first) is deprecated since Symfony 3.4 and will throw an exception in 4.0, set the "provider" key on the firewall instead.
      */
     public function testDeprecationForAmbiguousProvider()
     {
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/UserPasswordEncoderCommandTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/UserPasswordEncoderCommandTest.php
index ab9275aeed24..fa0be42c5d94 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/UserPasswordEncoderCommandTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/UserPasswordEncoderCommandTest.php
@@ -231,7 +231,7 @@ public function testThrowsExceptionOnNoConfiguredEncoders()
 
     /**
      * @group legacy
-     * @expectedDeprecation Passing null as the first argument of "Symfony\Bundle\SecurityBundle\Command\UserPasswordEncoderCommand::__construct" is deprecated since version 3.3 and will be removed in 4.0. If the command was registered by convention, make it a service instead.
+     * @expectedDeprecation Passing null as the first argument of "Symfony\Bundle\SecurityBundle\Command\UserPasswordEncoderCommand::__construct" is deprecated since Symfony 3.3 and will be removed in 4.0. If the command was registered by convention, make it a service instead.
      */
     public function testLegacy()
     {
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Security/FirewallContextTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Security/FirewallContextTest.php
index 22be0fd08165..0354327690f7 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/Security/FirewallContextTest.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Security/FirewallContextTest.php
@@ -38,7 +38,7 @@ public function testGetters()
     }
 
     /**
-     * @expectedDeprecation Method Symfony\Bundle\SecurityBundle\Security\FirewallContext::getContext() is deprecated since version 3.3 and will be removed in 4.0. Use Symfony\Bundle\SecurityBundle\Security\FirewallContext::getListeners/getExceptionListener() instead.
+     * @expectedDeprecation Method Symfony\Bundle\SecurityBundle\Security\FirewallContext::getContext() is deprecated since Symfony 3.3 and will be removed in 4.0. Use Symfony\Bundle\SecurityBundle\Security\FirewallContext::getListeners/getExceptionListener() instead.
      * @group legacy
      */
     public function testGetContext()
diff --git a/src/Symfony/Bundle/SecurityBundle/composer.json b/src/Symfony/Bundle/SecurityBundle/composer.json
index d1bf164f0a1f..45e6b3663c18 100644
--- a/src/Symfony/Bundle/SecurityBundle/composer.json
+++ b/src/Symfony/Bundle/SecurityBundle/composer.json
@@ -19,8 +19,8 @@
         "php": "^5.5.9|>=7.0.8",
         "ext-xml": "*",
         "symfony/security": "~3.4|~4.0",
-        "symfony/dependency-injection": "~3.4|~4.0",
-        "symfony/http-kernel": "~3.3|~4.0",
+        "symfony/dependency-injection": "^3.4.3|^4.0.3",
+        "symfony/http-kernel": "~3.4|~4.0",
         "symfony/polyfill-php70": "~1.0"
     },
     "require-dev": {
diff --git a/src/Symfony/Bundle/TwigBundle/CacheWarmer/TemplateCacheWarmer.php b/src/Symfony/Bundle/TwigBundle/CacheWarmer/TemplateCacheWarmer.php
index 40673f4913e9..65867ffa9785 100644
--- a/src/Symfony/Bundle/TwigBundle/CacheWarmer/TemplateCacheWarmer.php
+++ b/src/Symfony/Bundle/TwigBundle/CacheWarmer/TemplateCacheWarmer.php
@@ -41,7 +41,7 @@ public function __construct($container, \Traversable $iterator)
             $this->container = $container;
         } elseif ($container instanceof Environment) {
             $this->twig = $container;
-            @trigger_error(sprintf('Using a "%s" as first argument of %s is deprecated since version 3.4 and will be unsupported in version 4.0. Use a %s instead.', Environment::class, __CLASS__, ContainerInterface::class), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Using a "%s" as first argument of %s is deprecated since Symfony 3.4 and will be unsupported in version 4.0. Use a %s instead.', Environment::class, __CLASS__, ContainerInterface::class), E_USER_DEPRECATED);
         } else {
             throw new \InvalidArgumentException(sprintf('%s only accepts instance of Psr\Container\ContainerInterface as first argument.', __CLASS__));
         }
diff --git a/src/Symfony/Bundle/TwigBundle/Command/DebugCommand.php b/src/Symfony/Bundle/TwigBundle/Command/DebugCommand.php
index de943d2bed76..107eece3045d 100644
--- a/src/Symfony/Bundle/TwigBundle/Command/DebugCommand.php
+++ b/src/Symfony/Bundle/TwigBundle/Command/DebugCommand.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Bundle\TwigBundle\Command;
 
-@trigger_error(sprintf('The %s class is deprecated since version 3.4 and will be removed in 4.0. Use Symfony\Bridge\Twig\Command\DebugCommand instead.', DebugCommand::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The %s class is deprecated since Symfony 3.4 and will be removed in 4.0. Use Symfony\Bridge\Twig\Command\DebugCommand instead.', DebugCommand::class), E_USER_DEPRECATED);
 
 use Symfony\Bridge\Twig\Command\DebugCommand as BaseDebugCommand;
 use Symfony\Component\DependencyInjection\ContainerAwareInterface;
diff --git a/src/Symfony/Bundle/TwigBundle/ContainerAwareRuntimeLoader.php b/src/Symfony/Bundle/TwigBundle/ContainerAwareRuntimeLoader.php
index 377649602dc4..5ba6df59932f 100644
--- a/src/Symfony/Bundle/TwigBundle/ContainerAwareRuntimeLoader.php
+++ b/src/Symfony/Bundle/TwigBundle/ContainerAwareRuntimeLoader.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Bundle\TwigBundle;
 
-@trigger_error(sprintf('The %s class is deprecated since version 3.3 and will be removed in 4.0. Use the Twig\RuntimeLoader\ContainerRuntimeLoader class instead.', ContainerAwareRuntimeLoader::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The %s class is deprecated since Symfony 3.3 and will be removed in 4.0. Use the Twig\RuntimeLoader\ContainerRuntimeLoader class instead.', ContainerAwareRuntimeLoader::class), E_USER_DEPRECATED);
 
 use Psr\Log\LoggerInterface;
 use Symfony\Component\DependencyInjection\ContainerInterface;
diff --git a/src/Symfony/Bundle/TwigBundle/DependencyInjection/Configurator/EnvironmentConfigurator.php b/src/Symfony/Bundle/TwigBundle/DependencyInjection/Configurator/EnvironmentConfigurator.php
index 1612b6eb5fec..13ad88ef6b63 100644
--- a/src/Symfony/Bundle/TwigBundle/DependencyInjection/Configurator/EnvironmentConfigurator.php
+++ b/src/Symfony/Bundle/TwigBundle/DependencyInjection/Configurator/EnvironmentConfigurator.php
@@ -11,6 +11,7 @@
 
 namespace Symfony\Bundle\TwigBundle\DependencyInjection\Configurator;
 
+use Symfony\Bridge\Twig\UndefinedCallableHandler;
 use Twig\Environment;
 
 // BC/FC with namespaced Twig
@@ -49,5 +50,9 @@ public function configure(Environment $environment)
         }
 
         $environment->getExtension('Twig\Extension\CoreExtension')->setNumberFormat($this->decimals, $this->decimalPoint, $this->thousandsSeparator);
+
+        // wrap UndefinedCallableHandler in closures for lazy-autoloading
+        $environment->registerUndefinedFilterCallback(function ($name) { return UndefinedCallableHandler::onUndefinedFilter($name); });
+        $environment->registerUndefinedFunctionCallback(function ($name) { return UndefinedCallableHandler::onUndefinedFunction($name); });
     }
 }
diff --git a/src/Symfony/Bundle/TwigBundle/LICENSE b/src/Symfony/Bundle/TwigBundle/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Bundle/TwigBundle/LICENSE
+++ b/src/Symfony/Bundle/TwigBundle/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/Functional/CacheWarmingTest.php b/src/Symfony/Bundle/TwigBundle/Tests/Functional/CacheWarmingTest.php
index a7a330859f68..a21c11adca16 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/Functional/CacheWarmingTest.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/Functional/CacheWarmingTest.php
@@ -9,12 +9,13 @@
  * file that was distributed with this source code.
  */
 
-namespace Symfony\Bundle\TwigBundle\Tests;
+namespace Symfony\Bundle\TwigBundle\Tests\Functional;
 
 use Symfony\Component\HttpKernel\Kernel;
 use Symfony\Component\Config\Loader\LoaderInterface;
 use Symfony\Component\Filesystem\Filesystem;
 use Symfony\Bundle\FrameworkBundle\FrameworkBundle;
+use Symfony\Bundle\TwigBundle\Tests\TestCase;
 use Symfony\Bundle\TwigBundle\TwigBundle;
 
 class CacheWarmingTest extends TestCase
diff --git a/src/Symfony/Bundle/TwigBundle/Tests/Functional/NoTemplatingEntryTest.php b/src/Symfony/Bundle/TwigBundle/Tests/Functional/NoTemplatingEntryTest.php
index 3cf026820305..952b5e6ae193 100644
--- a/src/Symfony/Bundle/TwigBundle/Tests/Functional/NoTemplatingEntryTest.php
+++ b/src/Symfony/Bundle/TwigBundle/Tests/Functional/NoTemplatingEntryTest.php
@@ -9,12 +9,13 @@
  * file that was distributed with this source code.
  */
 
-namespace Symfony\Bundle\TwigBundle\Tests;
+namespace Symfony\Bundle\TwigBundle\Tests\Functional;
 
 use Symfony\Component\HttpKernel\Kernel;
 use Symfony\Component\Config\Loader\LoaderInterface;
 use Symfony\Component\Filesystem\Filesystem;
 use Symfony\Bundle\FrameworkBundle\FrameworkBundle;
+use Symfony\Bundle\TwigBundle\Tests\TestCase;
 use Symfony\Bundle\TwigBundle\TwigBundle;
 
 class NoTemplatingEntryTest extends TestCase
diff --git a/src/Symfony/Bundle/TwigBundle/composer.json b/src/Symfony/Bundle/TwigBundle/composer.json
index 96d6ee24c783..10ee36fc6f90 100644
--- a/src/Symfony/Bundle/TwigBundle/composer.json
+++ b/src/Symfony/Bundle/TwigBundle/composer.json
@@ -18,7 +18,7 @@
     "require": {
         "php": "^5.5.9|>=7.0.8",
         "symfony/config": "~3.2|~4.0",
-        "symfony/twig-bridge": "^3.4|~4.0",
+        "symfony/twig-bridge": "^3.4.3|^4.0.3",
         "symfony/http-foundation": "~2.8|~3.0|~4.0",
         "symfony/http-kernel": "^3.3|~4.0",
         "twig/twig": "~1.34|~2.4"
diff --git a/src/Symfony/Bundle/WebProfilerBundle/LICENSE b/src/Symfony/Bundle/WebProfilerBundle/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/LICENSE
+++ b/src/Symfony/Bundle/WebProfilerBundle/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Collector/time.html.twig b/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Collector/time.html.twig
index 28e3a3c8385a..3f70edb7d2e1 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Collector/time.html.twig
+++ b/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Collector/time.html.twig
@@ -14,10 +14,13 @@
     } %}
 {% endif %}
 
+
 {% block toolbar %}
-    {% set total_time = collector.events|length ? '%.0f'|format(collector.duration) : 'n/a' %}
+    {% set has_time_events = collector.events|length > 0 %}
+
+    {% set total_time = has_time_events ? '%.0f'|format(collector.duration) : 'n/a' %}
     {% set initialization_time = collector.events|length ? '%.0f'|format(collector.inittime) : 'n/a' %}
-    {% set status_color = collector.events|length and collector.duration > 1000 ? 'yellow' : '' %}
+    {% set status_color = has_time_events and collector.duration > 1000 ? 'yellow' : '' %}
 
     {% set icon %}
         {{ include('@WebProfiler/Icon/time.svg') }}
@@ -47,6 +50,7 @@
 {% endblock %}
 
 {% block panel %}
+    {% set has_time_events = collector.events|length > 0 %}
     <h2>Performance metrics</h2>
 
     <div class="metrics">
@@ -75,10 +79,14 @@
                 <span class="label">Sub-Request{{ profile.children|length > 1 ? 's' }}</span>
             </div>
 
-            {% set subrequests_time = 0 %}
-            {% for child in profile.children %}
-                {% set subrequests_time = subrequests_time + child.getcollector('time').events.__section__.duration %}
-            {% endfor %}
+            {% if has_time_events %}
+                {% set subrequests_time = 0 %}
+                {% for child in profile.children %}
+                    {% set subrequests_time = subrequests_time + child.getcollector('time').events.__section__.duration %}
+                {% endfor %}
+            {% else %}
+                {% set subrequests_time = 'n/a' %}
+            {% endif %}
 
             <div class="metric">
                 <span class="value">{{ subrequests_time }} <span class="unit">ms</span></span>
diff --git a/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Profiler/base_js.html.twig b/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Profiler/base_js.html.twig
index e83e95ae134f..aac9e3a0d472 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Profiler/base_js.html.twig
+++ b/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Profiler/base_js.html.twig
@@ -250,6 +250,8 @@
                             mode: arguments[0].mode,
                             redirect: arguments[0].redirect
                         };
+                    } else {
+                        url = String(url);
                     }
                     if (!url.match(new RegExp({{ excluded_ajax_paths|json_encode|raw }}))) {
                         var method = 'GET';
diff --git a/src/Symfony/Bundle/WebProfilerBundle/Twig/WebProfilerExtension.php b/src/Symfony/Bundle/WebProfilerBundle/Twig/WebProfilerExtension.php
index f552e5f206cf..61d0781542a5 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Twig/WebProfilerExtension.php
+++ b/src/Symfony/Bundle/WebProfilerBundle/Twig/WebProfilerExtension.php
@@ -116,7 +116,7 @@ public function dumpLog(Environment $env, $message, Data $context = null)
      */
     public function dumpValue($value)
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.2 and will be removed in 4.0. Use the dumpData() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.2 and will be removed in 4.0. Use the dumpData() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         if (null === $this->valueExporter) {
             $this->valueExporter = new ValueExporter();
diff --git a/src/Symfony/Bundle/WebServerBundle/Command/ServerLogCommand.php b/src/Symfony/Bundle/WebServerBundle/Command/ServerLogCommand.php
index 8b38748c3e1c..6a31b596f67a 100644
--- a/src/Symfony/Bundle/WebServerBundle/Command/ServerLogCommand.php
+++ b/src/Symfony/Bundle/WebServerBundle/Command/ServerLogCommand.php
@@ -39,7 +39,7 @@ public function isEnabled()
         }
 
         // based on a symfony/symfony package, it crashes due a missing FormatterInterface from monolog/monolog
-        if (!class_exists(FormatterInterface::class)) {
+        if (!interface_exists(FormatterInterface::class)) {
             return false;
         }
 
diff --git a/src/Symfony/Bundle/WebServerBundle/LICENSE b/src/Symfony/Bundle/WebServerBundle/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Bundle/WebServerBundle/LICENSE
+++ b/src/Symfony/Bundle/WebServerBundle/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Bundle/WebServerBundle/Resources/router.php b/src/Symfony/Bundle/WebServerBundle/Resources/router.php
index 187be0b8366a..a366b381aae4 100644
--- a/src/Symfony/Bundle/WebServerBundle/Resources/router.php
+++ b/src/Symfony/Bundle/WebServerBundle/Resources/router.php
@@ -30,7 +30,7 @@
     return false;
 }
 
-$script = getenv('APP_FRONT_CONTROLLER') ?: 'index.php';
+$script = isset($_ENV['APP_FRONT_CONTROLLER']) ? $_ENV['APP_FRONT_CONTROLLER'] : 'index.php';
 
 $_SERVER = array_merge($_SERVER, $_ENV);
 $_SERVER['SCRIPT_FILENAME'] = $_SERVER['DOCUMENT_ROOT'].DIRECTORY_SEPARATOR.$script;
diff --git a/src/Symfony/Bundle/WebServerBundle/WebServer.php b/src/Symfony/Bundle/WebServerBundle/WebServer.php
index e3425ec8bb13..beb5190b727a 100644
--- a/src/Symfony/Bundle/WebServerBundle/WebServer.php
+++ b/src/Symfony/Bundle/WebServerBundle/WebServer.php
@@ -146,11 +146,11 @@ public function isRunning($pidFile = null)
     private function createServerProcess(WebServerConfig $config)
     {
         $finder = new PhpExecutableFinder();
-        if (false === $binary = $finder->find()) {
+        if (false === $binary = $finder->find(false)) {
             throw new \RuntimeException('Unable to find the PHP binary.');
         }
 
-        $process = new Process(array($binary, '-S', $config->getAddress(), $config->getRouter()));
+        $process = new Process(array_merge(array($binary), $finder->findArguments(), array('-dvariables_order=EGPCS', '-S', $config->getAddress(), $config->getRouter())));
         $process->setWorkingDirectory($config->getDocumentRoot());
         $process->setTimeout(null);
 
diff --git a/src/Symfony/Bundle/WebServerBundle/WebServerConfig.php b/src/Symfony/Bundle/WebServerBundle/WebServerConfig.php
index 6c17d110feb0..8b88eaecad65 100644
--- a/src/Symfony/Bundle/WebServerBundle/WebServerConfig.php
+++ b/src/Symfony/Bundle/WebServerBundle/WebServerConfig.php
@@ -32,7 +32,7 @@ public function __construct($documentRoot, $env, $address = null, $router = null
             throw new \InvalidArgumentException(sprintf('Unable to find the front controller under "%s" (none of these files exist: %s).', $documentRoot, implode(', ', $this->getFrontControllerFileNames($env))));
         }
 
-        putenv('APP_FRONT_CONTROLLER='.$file);
+        $_ENV['APP_FRONT_CONTROLLER'] = $file;
 
         $this->documentRoot = $documentRoot;
         $this->env = $env;
diff --git a/src/Symfony/Bundle/WebServerBundle/composer.json b/src/Symfony/Bundle/WebServerBundle/composer.json
index f51be6235003..87272bba7b94 100644
--- a/src/Symfony/Bundle/WebServerBundle/composer.json
+++ b/src/Symfony/Bundle/WebServerBundle/composer.json
@@ -21,7 +21,7 @@
         "symfony/console": "~3.4|~4.0",
         "symfony/dependency-injection": "~3.4|~4.0",
         "symfony/http-kernel": "~3.3|~4.0",
-        "symfony/process": "~3.3|~4.0"
+        "symfony/process": "~3.3.14|^3.4.2|^4.0.2"
     },
     "autoload": {
         "psr-4": { "Symfony\\Bundle\\WebServerBundle\\": "" },
diff --git a/src/Symfony/Component/Asset/LICENSE b/src/Symfony/Component/Asset/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/Asset/LICENSE
+++ b/src/Symfony/Component/Asset/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/BrowserKit/CHANGELOG.md b/src/Symfony/Component/BrowserKit/CHANGELOG.md
index 47c847d0617e..ceb1af7c2ad5 100644
--- a/src/Symfony/Component/BrowserKit/CHANGELOG.md
+++ b/src/Symfony/Component/BrowserKit/CHANGELOG.md
@@ -22,7 +22,7 @@ CHANGELOG
 -----
 
  * [BC BREAK] `Client::followRedirect()` won't redirect responses with
-   a non-3xx Status Code and `Location` header anymore, as per 
+   a non-3xx Status Code and `Location` header anymore, as per
    http://tools.ietf.org/html/rfc2616#section-14.30
 
  * added `Client::getInternalRequest()` and `Client::getInternalResponse()` to
diff --git a/src/Symfony/Component/BrowserKit/LICENSE b/src/Symfony/Component/BrowserKit/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/BrowserKit/LICENSE
+++ b/src/Symfony/Component/BrowserKit/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Cache/LICENSE b/src/Symfony/Component/Cache/LICENSE
index ce39894f6a9a..fcd3fa76970f 100644
--- a/src/Symfony/Component/Cache/LICENSE
+++ b/src/Symfony/Component/Cache/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2016-2017 Fabien Potencier
+Copyright (c) 2016-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Cache/Traits/MemcachedTrait.php b/src/Symfony/Component/Cache/Traits/MemcachedTrait.php
index 82344fceaeba..9b877efb080a 100644
--- a/src/Symfony/Component/Cache/Traits/MemcachedTrait.php
+++ b/src/Symfony/Component/Cache/Traits/MemcachedTrait.php
@@ -71,7 +71,7 @@ private function init(\Memcached $client, $namespace, $defaultLifetime)
      *
      * @return \Memcached
      *
-     * @throws \ErrorEception When invalid options or servers are provided
+     * @throws \ErrorException When invalid options or servers are provided
      */
     public static function createConnection($servers, array $options = array())
     {
diff --git a/src/Symfony/Component/ClassLoader/ApcClassLoader.php b/src/Symfony/Component/ClassLoader/ApcClassLoader.php
index 473053224c12..04d5835003b1 100644
--- a/src/Symfony/Component/ClassLoader/ApcClassLoader.php
+++ b/src/Symfony/Component/ClassLoader/ApcClassLoader.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\ClassLoader;
 
-@trigger_error('The '.__NAMESPACE__.'\ApcClassLoader class is deprecated since version 3.3 and will be removed in 4.0. Use `composer install --apcu-autoloader` instead.', E_USER_DEPRECATED);
+@trigger_error('The '.__NAMESPACE__.'\ApcClassLoader class is deprecated since Symfony 3.3 and will be removed in 4.0. Use `composer install --apcu-autoloader` instead.', E_USER_DEPRECATED);
 
 /**
  * ApcClassLoader implements a wrapping autoloader cached in APC for PHP 5.3.
diff --git a/src/Symfony/Component/ClassLoader/ClassCollectionLoader.php b/src/Symfony/Component/ClassLoader/ClassCollectionLoader.php
index f35f1a0383dd..0ea9cef66064 100644
--- a/src/Symfony/Component/ClassLoader/ClassCollectionLoader.php
+++ b/src/Symfony/Component/ClassLoader/ClassCollectionLoader.php
@@ -12,7 +12,7 @@
 namespace Symfony\Component\ClassLoader;
 
 if (\PHP_VERSION_ID >= 70000) {
-    @trigger_error('The '.__NAMESPACE__.'\ClassCollectionLoader class is deprecated since version 3.3 and will be removed in 4.0.', E_USER_DEPRECATED);
+    @trigger_error('The '.__NAMESPACE__.'\ClassCollectionLoader class is deprecated since Symfony 3.3 and will be removed in 4.0.', E_USER_DEPRECATED);
 }
 
 /**
diff --git a/src/Symfony/Component/ClassLoader/ClassLoader.php b/src/Symfony/Component/ClassLoader/ClassLoader.php
index 0a72d2833a58..4afcf405854d 100644
--- a/src/Symfony/Component/ClassLoader/ClassLoader.php
+++ b/src/Symfony/Component/ClassLoader/ClassLoader.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\ClassLoader;
 
-@trigger_error('The '.__NAMESPACE__.'\ClassLoader class is deprecated since version 3.3 and will be removed in 4.0. Use Composer instead.', E_USER_DEPRECATED);
+@trigger_error('The '.__NAMESPACE__.'\ClassLoader class is deprecated since Symfony 3.3 and will be removed in 4.0. Use Composer instead.', E_USER_DEPRECATED);
 
 /**
  * ClassLoader implements an PSR-0 class loader.
diff --git a/src/Symfony/Component/ClassLoader/ClassMapGenerator.php b/src/Symfony/Component/ClassLoader/ClassMapGenerator.php
index dba7b2b468d1..a9351367ebb6 100644
--- a/src/Symfony/Component/ClassLoader/ClassMapGenerator.php
+++ b/src/Symfony/Component/ClassLoader/ClassMapGenerator.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\ClassLoader;
 
-@trigger_error('The '.__NAMESPACE__.'\ClassMapGenerator class is deprecated since version 3.3 and will be removed in 4.0. Use Composer instead.', E_USER_DEPRECATED);
+@trigger_error('The '.__NAMESPACE__.'\ClassMapGenerator class is deprecated since Symfony 3.3 and will be removed in 4.0. Use Composer instead.', E_USER_DEPRECATED);
 
 /**
  * ClassMapGenerator.
diff --git a/src/Symfony/Component/ClassLoader/LICENSE b/src/Symfony/Component/ClassLoader/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/ClassLoader/LICENSE
+++ b/src/Symfony/Component/ClassLoader/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/ClassLoader/MapClassLoader.php b/src/Symfony/Component/ClassLoader/MapClassLoader.php
index 10c6ddfdd900..7b0dbba43e21 100644
--- a/src/Symfony/Component/ClassLoader/MapClassLoader.php
+++ b/src/Symfony/Component/ClassLoader/MapClassLoader.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\ClassLoader;
 
-@trigger_error('The '.__NAMESPACE__.'\MapClassLoader class is deprecated since version 3.3 and will be removed in 4.0. Use Composer instead.', E_USER_DEPRECATED);
+@trigger_error('The '.__NAMESPACE__.'\MapClassLoader class is deprecated since Symfony 3.3 and will be removed in 4.0. Use Composer instead.', E_USER_DEPRECATED);
 
 /**
  * A class loader that uses a mapping file to look up paths.
diff --git a/src/Symfony/Component/ClassLoader/Psr4ClassLoader.php b/src/Symfony/Component/ClassLoader/Psr4ClassLoader.php
index 244252b3cc76..d1a6522ef836 100644
--- a/src/Symfony/Component/ClassLoader/Psr4ClassLoader.php
+++ b/src/Symfony/Component/ClassLoader/Psr4ClassLoader.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\ClassLoader;
 
-@trigger_error('The '.__NAMESPACE__.'\Psr4ClassLoader class is deprecated since version 3.3 and will be removed in 4.0. Use Composer instead.', E_USER_DEPRECATED);
+@trigger_error('The '.__NAMESPACE__.'\Psr4ClassLoader class is deprecated since Symfony 3.3 and will be removed in 4.0. Use Composer instead.', E_USER_DEPRECATED);
 
 /**
  * A PSR-4 compatible class loader.
diff --git a/src/Symfony/Component/ClassLoader/WinCacheClassLoader.php b/src/Symfony/Component/ClassLoader/WinCacheClassLoader.php
index 28c2be7cfbd5..ee1f521ee7ce 100644
--- a/src/Symfony/Component/ClassLoader/WinCacheClassLoader.php
+++ b/src/Symfony/Component/ClassLoader/WinCacheClassLoader.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\ClassLoader;
 
-@trigger_error('The '.__NAMESPACE__.'\WinCacheClassLoader class is deprecated since version 3.3 and will be removed in 4.0. Use `composer install --apcu-autoloader` instead.', E_USER_DEPRECATED);
+@trigger_error('The '.__NAMESPACE__.'\WinCacheClassLoader class is deprecated since Symfony 3.3 and will be removed in 4.0. Use `composer install --apcu-autoloader` instead.', E_USER_DEPRECATED);
 
 /**
  * WinCacheClassLoader implements a wrapping autoloader cached in WinCache.
diff --git a/src/Symfony/Component/ClassLoader/XcacheClassLoader.php b/src/Symfony/Component/ClassLoader/XcacheClassLoader.php
index 74dbdc85d25e..9d3091797398 100644
--- a/src/Symfony/Component/ClassLoader/XcacheClassLoader.php
+++ b/src/Symfony/Component/ClassLoader/XcacheClassLoader.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\ClassLoader;
 
-@trigger_error('The '.__NAMESPACE__.'\XcacheClassLoader class is deprecated since version 3.3 and will be removed in 4.0. Use `composer install --apcu-autoloader` instead.', E_USER_DEPRECATED);
+@trigger_error('The '.__NAMESPACE__.'\XcacheClassLoader class is deprecated since Symfony 3.3 and will be removed in 4.0. Use `composer install --apcu-autoloader` instead.', E_USER_DEPRECATED);
 
 /**
  * XcacheClassLoader implements a wrapping autoloader cached in XCache for PHP 5.3.
diff --git a/src/Symfony/Component/Config/Definition/Builder/ExprBuilder.php b/src/Symfony/Component/Config/Definition/Builder/ExprBuilder.php
index 3ea97802dcc5..64c0f5578ad4 100644
--- a/src/Symfony/Component/Config/Definition/Builder/ExprBuilder.php
+++ b/src/Symfony/Component/Config/Definition/Builder/ExprBuilder.php
@@ -186,7 +186,7 @@ public function thenEmptyArray()
      */
     public function thenInvalid($message)
     {
-        $this->thenPart = function ($v) use ($message) {throw new \InvalidArgumentException(sprintf($message, json_encode($v))); };
+        $this->thenPart = function ($v) use ($message) { throw new \InvalidArgumentException(sprintf($message, json_encode($v))); };
 
         return $this;
     }
diff --git a/src/Symfony/Component/Config/DependencyInjection/ConfigCachePass.php b/src/Symfony/Component/Config/DependencyInjection/ConfigCachePass.php
index 665cd39e8dd0..128bf7e28cd2 100644
--- a/src/Symfony/Component/Config/DependencyInjection/ConfigCachePass.php
+++ b/src/Symfony/Component/Config/DependencyInjection/ConfigCachePass.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\Config\DependencyInjection;
 
-@trigger_error(sprintf('The %s class is deprecated since version 3.4 and will be removed in 4.0. Use tagged iterator arguments instead.', ConfigCachePass::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The %s class is deprecated since Symfony 3.4 and will be removed in 4.0. Use tagged iterator arguments instead.', ConfigCachePass::class), E_USER_DEPRECATED);
 
 use Symfony\Component\DependencyInjection\Argument\IteratorArgument;
 use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
diff --git a/src/Symfony/Component/Config/LICENSE b/src/Symfony/Component/Config/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/Config/LICENSE
+++ b/src/Symfony/Component/Config/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Config/ResourceCheckerConfigCache.php b/src/Symfony/Component/Config/ResourceCheckerConfigCache.php
index 10257d5dd4f1..0a79b84c1c7b 100644
--- a/src/Symfony/Component/Config/ResourceCheckerConfigCache.php
+++ b/src/Symfony/Component/Config/ResourceCheckerConfigCache.php
@@ -158,7 +158,7 @@ private function safelyUnserialize($file)
         $meta = false;
         $signalingException = new \UnexpectedValueException();
         $prevUnserializeHandler = ini_set('unserialize_callback_func', '');
-        $prevErrorHandler = set_error_handler(function ($type, $msg, $file, $line, $context) use (&$prevErrorHandler, $signalingException) {
+        $prevErrorHandler = set_error_handler(function ($type, $msg, $file, $line, $context = array()) use (&$prevErrorHandler, $signalingException) {
             if (E_WARNING === $type && 'Class __PHP_Incomplete_Class has no unserializer' === $msg) {
                 throw $signalingException;
             }
diff --git a/src/Symfony/Component/Config/Tests/Definition/Builder/TreeBuilderTest.php b/src/Symfony/Component/Config/Tests/Definition/Builder/TreeBuilderTest.php
index 13304fae36e9..0a9312346e98 100644
--- a/src/Symfony/Component/Config/Tests/Definition/Builder/TreeBuilderTest.php
+++ b/src/Symfony/Component/Config/Tests/Definition/Builder/TreeBuilderTest.php
@@ -12,13 +12,9 @@
 namespace Symfony\Component\Config\Tests\Definition\Builder;
 
 use PHPUnit\Framework\TestCase;
-use Symfony\Component\Config\Tests\Definition\Builder\NodeBuilder as CustomNodeBuilder;
+use Symfony\Component\Config\Tests\Fixtures\Builder\NodeBuilder as CustomNodeBuilder;
 use Symfony\Component\Config\Definition\Builder\TreeBuilder;
 
-require __DIR__.'/../../Fixtures/Builder/NodeBuilder.php';
-require __DIR__.'/../../Fixtures/Builder/BarNodeDefinition.php';
-require __DIR__.'/../../Fixtures/Builder/VariableNodeDefinition.php';
-
 class TreeBuilderTest extends TestCase
 {
     public function testUsingACustomNodeBuilder()
@@ -28,11 +24,11 @@ public function testUsingACustomNodeBuilder()
 
         $nodeBuilder = $root->children();
 
-        $this->assertInstanceOf('Symfony\Component\Config\Tests\Definition\Builder\NodeBuilder', $nodeBuilder);
+        $this->assertInstanceOf('Symfony\Component\Config\Tests\Fixtures\Builder\NodeBuilder', $nodeBuilder);
 
         $nodeBuilder = $nodeBuilder->arrayNode('deeper')->children();
 
-        $this->assertInstanceOf('Symfony\Component\Config\Tests\Definition\Builder\NodeBuilder', $nodeBuilder);
+        $this->assertInstanceOf('Symfony\Component\Config\Tests\Fixtures\Builder\NodeBuilder', $nodeBuilder);
     }
 
     public function testOverrideABuiltInNodeType()
@@ -42,7 +38,7 @@ public function testOverrideABuiltInNodeType()
 
         $definition = $root->children()->variableNode('variable');
 
-        $this->assertInstanceOf('Symfony\Component\Config\Tests\Definition\Builder\VariableNodeDefinition', $definition);
+        $this->assertInstanceOf('Symfony\Component\Config\Tests\Fixtures\Builder\VariableNodeDefinition', $definition);
     }
 
     public function testAddANodeType()
@@ -52,7 +48,7 @@ public function testAddANodeType()
 
         $definition = $root->children()->barNode('variable');
 
-        $this->assertInstanceOf('Symfony\Component\Config\Tests\Definition\Builder\BarNodeDefinition', $definition);
+        $this->assertInstanceOf('Symfony\Component\Config\Tests\Fixtures\Builder\BarNodeDefinition', $definition);
     }
 
     public function testCreateABuiltInNodeTypeWithACustomNodeBuilder()
diff --git a/src/Symfony/Component/Config/Tests/Fixtures/Builder/BarNodeDefinition.php b/src/Symfony/Component/Config/Tests/Fixtures/Builder/BarNodeDefinition.php
index 0d46f3d2c8c0..b9c62e53771c 100644
--- a/src/Symfony/Component/Config/Tests/Fixtures/Builder/BarNodeDefinition.php
+++ b/src/Symfony/Component/Config/Tests/Fixtures/Builder/BarNodeDefinition.php
@@ -9,7 +9,7 @@
  * file that was distributed with this source code.
  */
 
-namespace Symfony\Component\Config\Tests\Definition\Builder;
+namespace Symfony\Component\Config\Tests\Fixtures\Builder;
 
 use Symfony\Component\Config\Definition\Builder\NodeDefinition;
 use Symfony\Component\Config\Tests\Fixtures\BarNode;
diff --git a/src/Symfony/Component/Config/Tests/Fixtures/Builder/NodeBuilder.php b/src/Symfony/Component/Config/Tests/Fixtures/Builder/NodeBuilder.php
index aa5986311ba6..22b8b32fb6de 100644
--- a/src/Symfony/Component/Config/Tests/Fixtures/Builder/NodeBuilder.php
+++ b/src/Symfony/Component/Config/Tests/Fixtures/Builder/NodeBuilder.php
@@ -9,7 +9,7 @@
  * file that was distributed with this source code.
  */
 
-namespace Symfony\Component\Config\Tests\Definition\Builder;
+namespace Symfony\Component\Config\Tests\Fixtures\Builder;
 
 use Symfony\Component\Config\Definition\Builder\NodeBuilder as BaseNodeBuilder;
 
diff --git a/src/Symfony/Component/Config/Tests/Fixtures/Builder/VariableNodeDefinition.php b/src/Symfony/Component/Config/Tests/Fixtures/Builder/VariableNodeDefinition.php
index 1017880c1111..6126ed434f37 100644
--- a/src/Symfony/Component/Config/Tests/Fixtures/Builder/VariableNodeDefinition.php
+++ b/src/Symfony/Component/Config/Tests/Fixtures/Builder/VariableNodeDefinition.php
@@ -9,7 +9,7 @@
  * file that was distributed with this source code.
  */
 
-namespace Symfony\Component\Config\Tests\Definition\Builder;
+namespace Symfony\Component\Config\Tests\Fixtures\Builder;
 
 use Symfony\Component\Config\Definition\Builder\VariableNodeDefinition as BaseVariableNodeDefinition;
 
diff --git a/src/Symfony/Component/Console/Application.php b/src/Symfony/Component/Console/Application.php
index f3bc0d59641a..be283aad16f3 100644
--- a/src/Symfony/Component/Console/Application.php
+++ b/src/Symfony/Component/Console/Application.php
@@ -580,6 +580,7 @@ public function find($name)
     {
         $this->init();
 
+        $aliases = array();
         $allCommands = $this->commandLoader ? array_merge($this->commandLoader->getNames(), array_keys($this->commands)) : array_keys($this->commands);
         $expr = preg_replace_callback('{([^:]+|)}', function ($matches) { return preg_quote($matches[1]).'[^:]*'; }, $name);
         $commands = preg_grep('{^'.$expr.'}', $allCommands);
@@ -612,14 +613,15 @@ public function find($name)
         // filter out aliases for commands which are already on the list
         if (count($commands) > 1) {
             $commandList = $this->commandLoader ? array_merge(array_flip($this->commandLoader->getNames()), $this->commands) : $this->commands;
-            $commands = array_unique(array_filter($commands, function ($nameOrAlias) use ($commandList, $commands) {
+            $commands = array_unique(array_filter($commands, function ($nameOrAlias) use ($commandList, $commands, &$aliases) {
                 $commandName = $commandList[$nameOrAlias] instanceof Command ? $commandList[$nameOrAlias]->getName() : $nameOrAlias;
+                $aliases[$nameOrAlias] = $commandName;
 
                 return $commandName === $nameOrAlias || !in_array($commandName, $commands);
             }));
         }
 
-        $exact = in_array($name, $commands, true);
+        $exact = in_array($name, $commands, true) || isset($aliases[$name]);
         if (count($commands) > 1 && !$exact) {
             $usableWidth = $this->terminal->getWidth() - 10;
             $abbrevs = array_values($commands);
diff --git a/src/Symfony/Component/Console/Event/ConsoleExceptionEvent.php b/src/Symfony/Component/Console/Event/ConsoleExceptionEvent.php
index a31797fa3503..0adfaf9ac938 100644
--- a/src/Symfony/Component/Console/Event/ConsoleExceptionEvent.php
+++ b/src/Symfony/Component/Console/Event/ConsoleExceptionEvent.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\Console\Event;
 
-@trigger_error(sprintf('The "%s" class is deprecated since version 3.3 and will be removed in 4.0. Use the ConsoleErrorEvent instead.', ConsoleExceptionEvent::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The "%s" class is deprecated since Symfony 3.3 and will be removed in 4.0. Use the ConsoleErrorEvent instead.', ConsoleExceptionEvent::class), E_USER_DEPRECATED);
 
 use Symfony\Component\Console\Command\Command;
 use Symfony\Component\Console\Input\InputInterface;
diff --git a/src/Symfony/Component/Console/Formatter/OutputFormatter.php b/src/Symfony/Component/Console/Formatter/OutputFormatter.php
index 3f3ebfbcacc0..6ece9e90684e 100644
--- a/src/Symfony/Component/Console/Formatter/OutputFormatter.php
+++ b/src/Symfony/Component/Console/Formatter/OutputFormatter.php
@@ -215,7 +215,7 @@ private function createStyleFromString($string)
                     try {
                         $style->setOption($option);
                     } catch (\InvalidArgumentException $e) {
-                        @trigger_error(sprintf('Unknown style options are deprecated since version 3.2 and will be removed in 4.0. Exception "%s".', $e->getMessage()), E_USER_DEPRECATED);
+                        @trigger_error(sprintf('Unknown style options are deprecated since Symfony 3.2 and will be removed in 4.0. Exception "%s".', $e->getMessage()), E_USER_DEPRECATED);
 
                         return false;
                     }
diff --git a/src/Symfony/Component/Console/Helper/QuestionHelper.php b/src/Symfony/Component/Console/Helper/QuestionHelper.php
index f0f37a099fcc..5bcd96b34031 100644
--- a/src/Symfony/Component/Console/Helper/QuestionHelper.php
+++ b/src/Symfony/Component/Console/Helper/QuestionHelper.php
@@ -47,6 +47,12 @@ public function ask(InputInterface $input, OutputInterface $output, Question $qu
         }
 
         if (!$input->isInteractive()) {
+            if ($question instanceof ChoiceQuestion) {
+                $choices = $question->getChoices();
+
+                return $choices[$question->getDefault()];
+            }
+
             return $question->getDefault();
         }
 
@@ -79,7 +85,7 @@ public function ask(InputInterface $input, OutputInterface $output, Question $qu
      */
     public function setInputStream($stream)
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.2 and will be removed in 4.0. Use %s::setStream() instead.', __METHOD__, StreamableInputInterface::class), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.2 and will be removed in 4.0. Use %s::setStream() instead.', __METHOD__, StreamableInputInterface::class), E_USER_DEPRECATED);
 
         if (!is_resource($stream)) {
             throw new InvalidArgumentException('Input stream must be a valid resource.');
@@ -99,7 +105,7 @@ public function setInputStream($stream)
     public function getInputStream()
     {
         if (0 === func_num_args() || func_get_arg(0)) {
-            @trigger_error(sprintf('The %s() method is deprecated since version 3.2 and will be removed in 4.0. Use %s::getStream() instead.', __METHOD__, StreamableInputInterface::class), E_USER_DEPRECATED);
+            @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.2 and will be removed in 4.0. Use %s::getStream() instead.', __METHOD__, StreamableInputInterface::class), E_USER_DEPRECATED);
         }
 
         return $this->inputStream;
diff --git a/src/Symfony/Component/Console/Input/InputInterface.php b/src/Symfony/Component/Console/Input/InputInterface.php
index e2412d71f171..b9e0651faf5d 100644
--- a/src/Symfony/Component/Console/Input/InputInterface.php
+++ b/src/Symfony/Component/Console/Input/InputInterface.php
@@ -24,7 +24,7 @@ interface InputInterface
     /**
      * Returns the first argument from the raw parameters (not parsed).
      *
-     * @return string The value of the first argument or null otherwise
+     * @return string|null The value of the first argument or null otherwise
      */
     public function getFirstArgument();
 
diff --git a/src/Symfony/Component/Console/LICENSE b/src/Symfony/Component/Console/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/Console/LICENSE
+++ b/src/Symfony/Component/Console/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Console/Tests/ApplicationTest.php b/src/Symfony/Component/Console/Tests/ApplicationTest.php
index 4e1f8811b207..f207ce0d4fb2 100644
--- a/src/Symfony/Component/Console/Tests/ApplicationTest.php
+++ b/src/Symfony/Component/Console/Tests/ApplicationTest.php
@@ -57,6 +57,8 @@ public static function setUpBeforeClass()
         require_once self::$fixturesPath.'/BarBucCommand.php';
         require_once self::$fixturesPath.'/FooSubnamespaced1Command.php';
         require_once self::$fixturesPath.'/FooSubnamespaced2Command.php';
+        require_once self::$fixturesPath.'/TestTiti.php';
+        require_once self::$fixturesPath.'/TestToto.php';
     }
 
     protected function normalizeLineBreaks($text)
@@ -283,6 +285,14 @@ public function testFindAmbiguousNamespace()
         $application->findNamespace('f');
     }
 
+    public function testFindNonAmbiguous()
+    {
+        $application = new Application();
+        $application->add(new \TestTiti());
+        $application->add(new \TestToto());
+        $this->assertEquals('test-toto', $application->find('test')->getName());
+    }
+
     /**
      * @expectedException        \Symfony\Component\Console\Exception\CommandNotFoundException
      * @expectedExceptionMessage There are no commands defined in the "bar" namespace.
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/TestTiti.php b/src/Symfony/Component/Console/Tests/Fixtures/TestTiti.php
new file mode 100644
index 000000000000..72e29d2a0a2d
--- /dev/null
+++ b/src/Symfony/Component/Console/Tests/Fixtures/TestTiti.php
@@ -0,0 +1,21 @@
+<?php
+
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+class TestTiti extends Command
+{
+    protected function configure()
+    {
+        $this
+            ->setName('test-titi')
+            ->setDescription('The test:titi command')
+        ;
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $output->write('test-titi');
+    }
+}
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/TestToto.php b/src/Symfony/Component/Console/Tests/Fixtures/TestToto.php
new file mode 100644
index 000000000000..f14805db68e6
--- /dev/null
+++ b/src/Symfony/Component/Console/Tests/Fixtures/TestToto.php
@@ -0,0 +1,22 @@
+<?php
+
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+class TestToto extends Command
+{
+    protected function configure()
+    {
+        $this
+            ->setName('test-toto')
+            ->setDescription('The test-toto command')
+            ->setAliases(array('test'))
+        ;
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $output->write('test-toto');
+    }
+}
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/application_renderexception_doublewidth1.txt b/src/Symfony/Component/Console/Tests/Fixtures/application_renderexception_doublewidth1.txt
index 01986c917b54..99f4b370572b 100644
--- a/src/Symfony/Component/Console/Tests/Fixtures/application_renderexception_doublewidth1.txt
+++ b/src/Symfony/Component/Console/Tests/Fixtures/application_renderexception_doublewidth1.txt
@@ -1,5 +1,5 @@
 
-In ApplicationTest.php line 716:
+In ApplicationTest.php line 726:
                     
   エラーメッセージ  
                     
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/application_renderexception_doublewidth1decorated.txt b/src/Symfony/Component/Console/Tests/Fixtures/application_renderexception_doublewidth1decorated.txt
index ba057d8cc77f..14886bd37e93 100644
--- a/src/Symfony/Component/Console/Tests/Fixtures/application_renderexception_doublewidth1decorated.txt
+++ b/src/Symfony/Component/Console/Tests/Fixtures/application_renderexception_doublewidth1decorated.txt
@@ -1,5 +1,5 @@
 
-In ApplicationTest.php line 716:
+In ApplicationTest.php line 726:
                     
   エラーメッセージ  
                     
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/application_renderexception_doublewidth2.txt b/src/Symfony/Component/Console/Tests/Fixtures/application_renderexception_doublewidth2.txt
index 66b52c879a66..01ec1b30e08c 100644
--- a/src/Symfony/Component/Console/Tests/Fixtures/application_renderexception_doublewidth2.txt
+++ b/src/Symfony/Component/Console/Tests/Fixtures/application_renderexception_doublewidth2.txt
@@ -1,5 +1,5 @@
 
-In ApplicationTest.php line 730:
+In ApplicationTest.php line 740:
                               
   コマンドの実行中にエラーが  
   発生しました。              
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/application_renderexception_escapeslines.txt b/src/Symfony/Component/Console/Tests/Fixtures/application_renderexception_escapeslines.txt
index 326ee42f6d74..24513d4ef5b3 100644
--- a/src/Symfony/Component/Console/Tests/Fixtures/application_renderexception_escapeslines.txt
+++ b/src/Symfony/Component/Console/Tests/Fixtures/application_renderexception_escapeslines.txt
@@ -1,5 +1,5 @@
 
-In ApplicationTest.php line 744:
+In ApplicationTest.php line 754:
                      
   dont break here <  
   info>!</info>      
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/application_renderexception_linebreaks.txt b/src/Symfony/Component/Console/Tests/Fixtures/application_renderexception_linebreaks.txt
index 88ee0f29ff74..7664b9e35420 100644
--- a/src/Symfony/Component/Console/Tests/Fixtures/application_renderexception_linebreaks.txt
+++ b/src/Symfony/Component/Console/Tests/Fixtures/application_renderexception_linebreaks.txt
@@ -1,5 +1,5 @@
 
-In ApplicationTest.php line 761:
+In ApplicationTest.php line 771:
                                     
   line 1 with extra spaces          
   line 2                            
diff --git a/src/Symfony/Component/Console/Tests/Formatter/OutputFormatterTest.php b/src/Symfony/Component/Console/Tests/Formatter/OutputFormatterTest.php
index a1aa8013a81a..4b715c680d3d 100644
--- a/src/Symfony/Component/Console/Tests/Formatter/OutputFormatterTest.php
+++ b/src/Symfony/Component/Console/Tests/Formatter/OutputFormatterTest.php
@@ -199,7 +199,7 @@ public function provideInlineStyleOptionsCases()
     /**
      * @group legacy
      * @dataProvider provideInlineStyleTagsWithUnknownOptions
-     * @expectedDeprecation Unknown style options are deprecated since version 3.2 and will be removed in 4.0. Exception "Invalid option specified: "%s". Expected one of (bold, underscore, blink, reverse, conceal)".
+     * @expectedDeprecation Unknown style options are deprecated since Symfony 3.2 and will be removed in 4.0. Exception "Invalid option specified: "%s". Expected one of (bold, underscore, blink, reverse, conceal)".
      */
     public function testInlineStyleOptionsUnknownAreDeprecated($tag, $option)
     {
diff --git a/src/Symfony/Component/Console/Tests/Helper/QuestionHelperTest.php b/src/Symfony/Component/Console/Tests/Helper/QuestionHelperTest.php
index 9a2887a22c27..78ec1d3c7f6f 100644
--- a/src/Symfony/Component/Console/Tests/Helper/QuestionHelperTest.php
+++ b/src/Symfony/Component/Console/Tests/Helper/QuestionHelperTest.php
@@ -83,6 +83,10 @@ public function testAskChoice()
         $question->setMultiselect(true);
 
         $this->assertEquals(array('Superman', 'Batman'), $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream), $this->createOutputInterface(), $question));
+
+        $question = new ChoiceQuestion('What is your favorite superhero?', $heroes, 0);
+        // We are supposed to get the default value since we are not in interactive mode
+        $this->assertEquals('Superman', $questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream, true), $this->createOutputInterface(), $question));
     }
 
     public function testAsk()
diff --git a/src/Symfony/Component/CssSelector/LICENSE b/src/Symfony/Component/CssSelector/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/CssSelector/LICENSE
+++ b/src/Symfony/Component/CssSelector/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Debug/DebugClassLoader.php b/src/Symfony/Component/Debug/DebugClassLoader.php
index 9ff826ed0992..78bfb8538802 100644
--- a/src/Symfony/Component/Debug/DebugClassLoader.php
+++ b/src/Symfony/Component/Debug/DebugClassLoader.php
@@ -28,12 +28,13 @@ class DebugClassLoader
     private $isFinder;
     private $loaded = array();
     private static $caseCheck;
+    private static $checkedClasses = array();
     private static $final = array();
     private static $finalMethods = array();
     private static $deprecated = array();
     private static $internal = array();
     private static $internalMethods = array();
-    private static $php7Reserved = array('int', 'float', 'bool', 'string', 'true', 'false', 'null');
+    private static $php7Reserved = array('int' => 1, 'float' => 1, 'bool' => 1, 'string' => 1, 'true' => 1, 'false' => 1, 'null' => 1);
     private static $darwinCache = array('/' => array('/', array()));
 
     public function __construct(callable $classLoader)
@@ -139,8 +140,14 @@ public function loadClass($class)
         try {
             if ($this->isFinder && !isset($this->loaded[$class])) {
                 $this->loaded[$class] = true;
-                if ($file = $this->classLoader[0]->findFile($class)) {
+                if ($file = $this->classLoader[0]->findFile($class) ?: false) {
+                    $wasCached = \function_exists('opcache_is_script_cached') && opcache_is_script_cached($file);
+
                     require $file;
+
+                    if ($wasCached) {
+                        return;
+                    }
                 }
             } else {
                 call_user_func($this->classLoader, $class);
@@ -150,41 +157,58 @@ public function loadClass($class)
             error_reporting($e);
         }
 
-        $exists = class_exists($class, false) || interface_exists($class, false) || trait_exists($class, false);
+        $this->checkClass($class, $file);
+    }
 
-        if ($class && '\\' === $class[0]) {
+    private function checkClass($class, $file = null)
+    {
+        $exists = null === $file || \class_exists($class, false) || \interface_exists($class, false) || \trait_exists($class, false);
+
+        if (null !== $file && $class && '\\' === $class[0]) {
             $class = substr($class, 1);
         }
 
         if ($exists) {
+            if (isset(self::$checkedClasses[$class])) {
+                return;
+            }
+            self::$checkedClasses[$class] = true;
+
             $refl = new \ReflectionClass($class);
+            if (null === $file && $refl->isInternal()) {
+                return;
+            }
             $name = $refl->getName();
 
-            if ($name !== $class && 0 === strcasecmp($name, $class)) {
+            if ($name !== $class && 0 === \strcasecmp($name, $class)) {
                 throw new \RuntimeException(sprintf('Case mismatch between loaded and declared class names: "%s" vs "%s".', $class, $name));
             }
 
             // Don't trigger deprecations for classes in the same vendor
-            if (2 > $len = 1 + (strpos($name, '\\') ?: strpos($name, '_'))) {
+            if (2 > $len = 1 + (\strpos($name, '\\') ?: \strpos($name, '_'))) {
                 $len = 0;
                 $ns = '';
             } else {
-                $ns = substr($name, 0, $len);
+                $ns = \substr($name, 0, $len);
             }
 
             // Detect annotations on the class
             if (false !== $doc = $refl->getDocComment()) {
                 foreach (array('final', 'deprecated', 'internal') as $annotation) {
-                    if (false !== strpos($doc, '@'.$annotation) && preg_match('#\n \* @'.$annotation.'(?:( .+?)\.?)?\r?\n \*(?: @|/$)#s', $doc, $notice)) {
+                    if (false !== \strpos($doc, $annotation) && preg_match('#\n \* @'.$annotation.'(?:( .+?)\.?)?\r?\n \*(?: @|/$)#s', $doc, $notice)) {
                         self::${$annotation}[$name] = isset($notice[1]) ? preg_replace('#\s*\r?\n \* +#', ' ', $notice[1]) : '';
                     }
                 }
             }
 
-            $parentAndTraits = class_uses($name, false);
-            if ($parent = get_parent_class($class)) {
+            $parentAndTraits = \class_uses($name, false);
+            if ($parent = \get_parent_class($class)) {
                 $parentAndTraits[] = $parent;
 
+                if (!isset(self::$checkedClasses[$parent])) {
+                    $this->checkClass($parent);
+                }
+
                 if (isset(self::$final[$parent])) {
                     @trigger_error(sprintf('The "%s" class is considered final%s. It may change without further notice as of its next major version. You should not extend it from "%s".', $parent, self::$final[$parent], $name), E_USER_DEPRECATED);
                 }
@@ -192,13 +216,16 @@ public function loadClass($class)
 
             // Detect if the parent is annotated
             foreach ($parentAndTraits + $this->getOwnInterfaces($name, $parent) as $use) {
-                if (isset(self::$deprecated[$use]) && strncmp($ns, $use, $len)) {
+                if (!isset(self::$checkedClasses[$use])) {
+                    $this->checkClass($use);
+                }
+                if (isset(self::$deprecated[$use]) && \strncmp($ns, $use, $len)) {
                     $type = class_exists($name, false) ? 'class' : (interface_exists($name, false) ? 'interface' : 'trait');
                     $verb = class_exists($use, false) || interface_exists($name, false) ? 'extends' : (interface_exists($use, false) ? 'implements' : 'uses');
 
                     @trigger_error(sprintf('The "%s" %s %s "%s" that is deprecated%s.', $name, $type, $verb, $use, self::$deprecated[$use]), E_USER_DEPRECATED);
                 }
-                if (isset(self::$internal[$use]) && strncmp($ns, $use, $len)) {
+                if (isset(self::$internal[$use]) && \strncmp($ns, $use, $len)) {
                     @trigger_error(sprintf('The "%s" %s is considered internal%s. It may change without further notice. You should not use it from "%s".', $use, class_exists($use, false) ? 'class' : (interface_exists($use, false) ? 'interface' : 'trait'), self::$internal[$use], $name), E_USER_DEPRECATED);
                 }
             }
@@ -209,12 +236,12 @@ public function loadClass($class)
             foreach ($parentAndTraits as $use) {
                 foreach (array('finalMethods', 'internalMethods') as $property) {
                     if (isset(self::${$property}[$use])) {
-                        self::${$property}[$name] = array_merge(self::${$property}[$name], self::${$property}[$use]);
+                        self::${$property}[$name] = self::${$property}[$name] ? self::${$property}[$use] + self::${$property}[$name] : self::${$property}[$use];
                     }
                 }
             }
 
-            $isClass = class_exists($name, false);
+            $isClass = \class_exists($name, false);
             foreach ($refl->getMethods(\ReflectionMethod::IS_PUBLIC | \ReflectionMethod::IS_PROTECTED) as $method) {
                 if ($method->class !== $name) {
                     continue;
@@ -233,7 +260,7 @@ public function loadClass($class)
                 foreach ($parentAndTraits as $use) {
                     if (isset(self::$internalMethods[$use][$method->name])) {
                         list($declaringClass, $message) = self::$internalMethods[$use][$method->name];
-                        if (strncmp($ns, $declaringClass, $len)) {
+                        if (\strncmp($ns, $declaringClass, $len)) {
                             @trigger_error(sprintf('The "%s::%s()" method is considered internal%s. It may change without further notice. You should not extend it from "%s".', $declaringClass, $method->name, $message, $name), E_USER_DEPRECATED);
                         }
                     }
@@ -245,14 +272,14 @@ public function loadClass($class)
                 }
 
                 foreach (array('final', 'internal') as $annotation) {
-                    if (false !== strpos($doc, '@'.$annotation) && preg_match('#\n\s+\* @'.$annotation.'(?:( .+?)\.?)?\r?\n\s+\*(?: @|/$)#s', $doc, $notice)) {
+                    if (false !== \strpos($doc, $annotation) && preg_match('#\n\s+\* @'.$annotation.'(?:( .+?)\.?)?\r?\n\s+\*(?: @|/$)#s', $doc, $notice)) {
                         $message = isset($notice[1]) ? preg_replace('#\s*\r?\n \* +#', ' ', $notice[1]) : '';
                         self::${$annotation.'Methods'}[$name][$method->name] = array($name, $message);
                     }
                 }
             }
 
-            if (in_array(strtolower($refl->getShortName()), self::$php7Reserved)) {
+            if (isset(self::$php7Reserved[\strtolower($refl->getShortName())])) {
                 @trigger_error(sprintf('The "%s" class uses the reserved name "%s", it will break on PHP 7 and higher', $name, $refl->getShortName()), E_USER_DEPRECATED);
             }
         }
@@ -350,8 +377,6 @@ public function loadClass($class)
                     throw new \RuntimeException(sprintf('Case mismatch between class and real file names: "%s" vs "%s" in "%s".', substr($tail, -$tailLen + 1), substr($real, -$tailLen + 1), substr($real, 0, -$tailLen + 1)));
                 }
             }
-
-            return true;
         }
     }
 
diff --git a/src/Symfony/Component/Debug/Exception/ContextErrorException.php b/src/Symfony/Component/Debug/Exception/ContextErrorException.php
index 6561d4df3728..554139da3bf1 100644
--- a/src/Symfony/Component/Debug/Exception/ContextErrorException.php
+++ b/src/Symfony/Component/Debug/Exception/ContextErrorException.php
@@ -33,7 +33,7 @@ public function __construct($message, $code, $severity, $filename, $lineno, $con
      */
     public function getContext()
     {
-        @trigger_error(sprintf('The %s class is deprecated since version 3.3 and will be removed in 4.0.', __CLASS__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s class is deprecated since Symfony 3.3 and will be removed in 4.0.', __CLASS__), E_USER_DEPRECATED);
 
         return $this->context;
     }
diff --git a/src/Symfony/Component/Debug/LICENSE b/src/Symfony/Component/Debug/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/Debug/LICENSE
+++ b/src/Symfony/Component/Debug/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Debug/Resources/ext/tests/001.phpt b/src/Symfony/Component/Debug/Resources/ext/tests/001.phpt
index 15e183a70615..4a87cd3180b0 100644
--- a/src/Symfony/Component/Debug/Resources/ext/tests/001.phpt
+++ b/src/Symfony/Component/Debug/Resources/ext/tests/001.phpt
@@ -1,7 +1,9 @@
 --TEST--
 Test symfony_zval_info API
 --SKIPIF--
-<?php if (!extension_loaded('symfony_debug')) print 'skip'; ?>
+<?php if (!extension_loaded('symfony_debug')) {
+    echo 'skip';
+} ?>
 --FILE--
 <?php
 
diff --git a/src/Symfony/Component/Debug/Resources/ext/tests/002.phpt b/src/Symfony/Component/Debug/Resources/ext/tests/002.phpt
index 2bc6d71274d8..afc7bb49024d 100644
--- a/src/Symfony/Component/Debug/Resources/ext/tests/002.phpt
+++ b/src/Symfony/Component/Debug/Resources/ext/tests/002.phpt
@@ -1,7 +1,9 @@
 --TEST--
 Test symfony_debug_backtrace in case of fatal error
 --SKIPIF--
-<?php if (!extension_loaded('symfony_debug')) print 'skip'; ?>
+<?php if (!extension_loaded('symfony_debug')) {
+    echo 'skip';
+} ?>
 --FILE--
 <?php
 
diff --git a/src/Symfony/Component/Debug/Resources/ext/tests/002_1.phpt b/src/Symfony/Component/Debug/Resources/ext/tests/002_1.phpt
index 4e9e34f1b2a4..86de3e177d08 100644
--- a/src/Symfony/Component/Debug/Resources/ext/tests/002_1.phpt
+++ b/src/Symfony/Component/Debug/Resources/ext/tests/002_1.phpt
@@ -1,7 +1,9 @@
 --TEST--
 Test symfony_debug_backtrace in case of non fatal error
 --SKIPIF--
-<?php if (!extension_loaded('symfony_debug')) print 'skip'; ?>
+<?php if (!extension_loaded('symfony_debug')) {
+    echo 'skip';
+} ?>
 --FILE--
 <?php
 
diff --git a/src/Symfony/Component/Debug/Resources/ext/tests/003.phpt b/src/Symfony/Component/Debug/Resources/ext/tests/003.phpt
index 2a494e27af2f..ce3c4e0ab564 100644
--- a/src/Symfony/Component/Debug/Resources/ext/tests/003.phpt
+++ b/src/Symfony/Component/Debug/Resources/ext/tests/003.phpt
@@ -1,7 +1,9 @@
 --TEST--
 Test ErrorHandler in case of fatal error
 --SKIPIF--
-<?php if (!extension_loaded('symfony_debug')) print 'skip'; ?>
+<?php if (!extension_loaded('symfony_debug')) {
+    echo 'skip';
+} ?>
 --FILE--
 <?php
 
diff --git a/src/Symfony/Component/Debug/Tests/Exception/FlattenExceptionTest.php b/src/Symfony/Component/Debug/Tests/Exception/FlattenExceptionTest.php
index e7762bdec8ed..8fd1c79594d3 100644
--- a/src/Symfony/Component/Debug/Tests/Exception/FlattenExceptionTest.php
+++ b/src/Symfony/Component/Debug/Tests/Exception/FlattenExceptionTest.php
@@ -261,6 +261,7 @@ function () {},
 
     public function testRecursionInArguments()
     {
+        $a = null;
         $a = array('foo', array(2, &$a));
         $exception = $this->createException($a);
 
diff --git a/src/Symfony/Component/Debug/Tests/phpt/debug_class_loader.phpt b/src/Symfony/Component/Debug/Tests/phpt/debug_class_loader.phpt
new file mode 100644
index 000000000000..b9d3d7288714
--- /dev/null
+++ b/src/Symfony/Component/Debug/Tests/phpt/debug_class_loader.phpt
@@ -0,0 +1,26 @@
+--TEST--
+Test DebugClassLoader with previously loaded parents
+--FILE--
+<?php
+
+namespace Symfony\Component\Debug\Tests\Fixtures;
+
+use Symfony\Component\Debug\DebugClassLoader;
+
+$vendor = __DIR__;
+while (!file_exists($vendor.'/vendor')) {
+    $vendor = dirname($vendor);
+}
+require $vendor.'/vendor/autoload.php';
+
+class_exists(FinalMethod::class);
+
+set_error_handler(function ($type, $msg) { echo $msg, "\n"; });
+
+DebugClassLoader::enable();
+
+class_exists(ExtendedFinalMethod::class);
+
+?>
+--EXPECTF--
+The "Symfony\Component\Debug\Tests\Fixtures\FinalMethod::finalMethod()" method is considered final since version 3.3. It may change without further notice as of its next major version. You should not extend it from "Symfony\Component\Debug\Tests\Fixtures\ExtendedFinalMethod".
diff --git a/src/Symfony/Component/Debug/Tests/phpt/exception_rethrown.phpt b/src/Symfony/Component/Debug/Tests/phpt/exception_rethrown.phpt
index 877e208f406a..9df0a65cf79f 100644
--- a/src/Symfony/Component/Debug/Tests/phpt/exception_rethrown.phpt
+++ b/src/Symfony/Component/Debug/Tests/phpt/exception_rethrown.phpt
@@ -26,7 +26,6 @@ ErrorHandler::register()->setDefaultLogger(new TestLogger());
 ini_set('display_errors', 1);
 
 throw new \Exception('foo');
-
 ?>
 --EXPECTF--
 Uncaught Exception: foo
diff --git a/src/Symfony/Component/Debug/Tests/phpt/fatal_with_nested_handlers.phpt b/src/Symfony/Component/Debug/Tests/phpt/fatal_with_nested_handlers.phpt
index bd7b644dc3aa..5c5245c069e6 100644
--- a/src/Symfony/Component/Debug/Tests/phpt/fatal_with_nested_handlers.phpt
+++ b/src/Symfony/Component/Debug/Tests/phpt/fatal_with_nested_handlers.phpt
@@ -24,7 +24,9 @@ var_dump(array(
 $eHandler[0]->setExceptionHandler('print_r');
 
 if (true) {
-    class Broken implements \Serializable {};
+    class Broken implements \Serializable
+    {
+    }
 }
 
 ?>
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/AutowireExceptionPass.php b/src/Symfony/Component/DependencyInjection/Compiler/AutowireExceptionPass.php
index f01617dd633c..9a4c74d3590e 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/AutowireExceptionPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/AutowireExceptionPass.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\DependencyInjection\Compiler;
 
-@trigger_error('The '.__NAMESPACE__.'\AutowireExceptionPass class is deprecated since version 3.4 and will be removed in 4.0. Use the DefinitionErrorExceptionPass class instead.', E_USER_DEPRECATED);
+@trigger_error('The '.__NAMESPACE__.'\AutowireExceptionPass class is deprecated since Symfony 3.4 and will be removed in 4.0. Use the DefinitionErrorExceptionPass class instead.', E_USER_DEPRECATED);
 
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/AutowirePass.php b/src/Symfony/Component/DependencyInjection/Compiler/AutowirePass.php
index 1320ef1f2a50..ae58f62bd081 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/AutowirePass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/AutowirePass.php
@@ -87,7 +87,7 @@ public function process(ContainerBuilder $container)
      */
     public static function createResourceForClass(\ReflectionClass $reflectionClass)
     {
-        @trigger_error('The '.__METHOD__.'() method is deprecated since version 3.3 and will be removed in 4.0. Use ContainerBuilder::getReflectionClass() instead.', E_USER_DEPRECATED);
+        @trigger_error('The '.__METHOD__.'() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use ContainerBuilder::getReflectionClass() instead.', E_USER_DEPRECATED);
 
         $metadata = array();
 
@@ -433,7 +433,7 @@ private function createAutowiredDefinition($type)
             $this->currentId = $currentId;
         }
 
-        @trigger_error(sprintf('Relying on service auto-registration for type "%s" is deprecated since version 3.4 and won\'t be supported in 4.0. Create a service named "%s" instead.', $type, $type), E_USER_DEPRECATED);
+        @trigger_error(sprintf('Relying on service auto-registration for type "%s" is deprecated since Symfony 3.4 and won\'t be supported in 4.0. Create a service named "%s" instead.', $type, $type), E_USER_DEPRECATED);
 
         $this->container->log($this, sprintf('Type "%s" has been auto-registered for service "%s".', $type, $this->currentId));
 
@@ -457,6 +457,10 @@ private function createTypeNotFoundMessage(TypedReference $reference, $label)
         } else {
             $message = $this->container->has($type) ? 'this service is abstract' : 'no such service exists';
             $message = sprintf('references %s "%s" but %s.%s', $r->isInterface() ? 'interface' : 'class', $type, $message, $this->createTypeAlternatives($reference));
+
+            if ($r->isInterface()) {
+                $message .= ' Did you create a class that implements this interface?';
+            }
         }
 
         $message = sprintf('Cannot autowire service "%s": %s %s', $this->currentId, $label, $message);
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/Compiler.php b/src/Symfony/Component/DependencyInjection/Compiler/Compiler.php
index e39c9598549d..2a0d13641d9d 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/Compiler.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/Compiler.php
@@ -62,7 +62,7 @@ public function getServiceReferenceGraph()
     public function getLoggingFormatter()
     {
         if (null === $this->loggingFormatter) {
-            @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the ContainerBuilder::log() method instead.', __METHOD__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the ContainerBuilder::log() method instead.', __METHOD__), E_USER_DEPRECATED);
 
             $this->loggingFormatter = new LoggingFormatter();
         }
@@ -85,7 +85,7 @@ public function addPass(CompilerPassInterface $pass, $type = PassConfig::TYPE_BE
             if (__CLASS__ !== get_class($this)) {
                 $r = new \ReflectionMethod($this, __FUNCTION__);
                 if (__CLASS__ !== $r->getDeclaringClass()->getName()) {
-                    @trigger_error(sprintf('Method %s() will have a third `int $priority = 0` argument in version 4.0. Not defining it is deprecated since 3.2.', __METHOD__), E_USER_DEPRECATED);
+                    @trigger_error(sprintf('Method %s() will have a third `int $priority = 0` argument in version 4.0. Not defining it is deprecated since Symfony 3.2.', __METHOD__), E_USER_DEPRECATED);
                 }
             }
 
@@ -104,7 +104,7 @@ public function addPass(CompilerPassInterface $pass, $type = PassConfig::TYPE_BE
      */
     public function addLogMessage($string)
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the ContainerBuilder::log() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the ContainerBuilder::log() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         $this->log[] = $string;
     }
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/FactoryReturnTypePass.php b/src/Symfony/Component/DependencyInjection/Compiler/FactoryReturnTypePass.php
index 85b5872b0e7d..91497086c21d 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/FactoryReturnTypePass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/FactoryReturnTypePass.php
@@ -27,7 +27,7 @@ class FactoryReturnTypePass implements CompilerPassInterface
     public function __construct(ResolveClassPass $resolveClassPass = null)
     {
         if (null === $resolveClassPass) {
-            @trigger_error('The '.__CLASS__.' class is deprecated since version 3.3 and will be removed in 4.0.', E_USER_DEPRECATED);
+            @trigger_error('The '.__CLASS__.' class is deprecated since Symfony 3.3 and will be removed in 4.0.', E_USER_DEPRECATED);
         }
         $this->resolveClassPass = $resolveClassPass;
     }
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/LoggingFormatter.php b/src/Symfony/Component/DependencyInjection/Compiler/LoggingFormatter.php
index 0e126efaa579..a9d8258de992 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/LoggingFormatter.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/LoggingFormatter.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\DependencyInjection\Compiler;
 
-@trigger_error('The '.__NAMESPACE__.'\LoggingFormatter class is deprecated since version 3.3 and will be removed in 4.0. Use the ContainerBuilder::log() method instead.', E_USER_DEPRECATED);
+@trigger_error('The '.__NAMESPACE__.'\LoggingFormatter class is deprecated since Symfony 3.3 and will be removed in 4.0. Use the ContainerBuilder::log() method instead.', E_USER_DEPRECATED);
 
 /**
  * Used to format logging messages during the compilation.
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/PassConfig.php b/src/Symfony/Component/DependencyInjection/Compiler/PassConfig.php
index d01385107fc9..d1a308328a26 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/PassConfig.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/PassConfig.php
@@ -127,7 +127,7 @@ public function addPass(CompilerPassInterface $pass, $type = self::TYPE_BEFORE_O
             if (__CLASS__ !== get_class($this)) {
                 $r = new \ReflectionMethod($this, __FUNCTION__);
                 if (__CLASS__ !== $r->getDeclaringClass()->getName()) {
-                    @trigger_error(sprintf('Method %s() will have a third `int $priority = 0` argument in version 4.0. Not defining it is deprecated since 3.2.', __METHOD__), E_USER_DEPRECATED);
+                    @trigger_error(sprintf('Method %s() will have a third `int $priority = 0` argument in version 4.0. Not defining it is deprecated since Symfony 3.2.', __METHOD__), E_USER_DEPRECATED);
                 }
             }
 
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/ResolveDefinitionTemplatesPass.php b/src/Symfony/Component/DependencyInjection/Compiler/ResolveDefinitionTemplatesPass.php
index 30678fa704c0..d48eff221463 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/ResolveDefinitionTemplatesPass.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/ResolveDefinitionTemplatesPass.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\DependencyInjection\Compiler;
 
-@trigger_error('The '.__NAMESPACE__.'\ResolveDefinitionTemplatesPass class is deprecated since version 3.4 and will be removed in 4.0. Use the ResolveChildDefinitionsPass class instead.', E_USER_DEPRECATED);
+@trigger_error('The '.__NAMESPACE__.'\ResolveDefinitionTemplatesPass class is deprecated since Symfony 3.4 and will be removed in 4.0. Use the ResolveChildDefinitionsPass class instead.', E_USER_DEPRECATED);
 
 class_exists(ResolveChildDefinitionsPass::class);
 
diff --git a/src/Symfony/Component/DependencyInjection/Config/AutowireServiceResource.php b/src/Symfony/Component/DependencyInjection/Config/AutowireServiceResource.php
index 5e683cbcf0d8..0eac93964b94 100644
--- a/src/Symfony/Component/DependencyInjection/Config/AutowireServiceResource.php
+++ b/src/Symfony/Component/DependencyInjection/Config/AutowireServiceResource.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\DependencyInjection\Config;
 
-@trigger_error('The '.__NAMESPACE__.'\AutowireServiceResource class is deprecated since version 3.3 and will be removed in 4.0. Use ContainerBuilder::getReflectionClass() instead.', E_USER_DEPRECATED);
+@trigger_error('The '.__NAMESPACE__.'\AutowireServiceResource class is deprecated since Symfony 3.3 and will be removed in 4.0. Use ContainerBuilder::getReflectionClass() instead.', E_USER_DEPRECATED);
 
 use Symfony\Component\Config\Resource\SelfCheckingResourceInterface;
 use Symfony\Component\DependencyInjection\Compiler\AutowirePass;
diff --git a/src/Symfony/Component/DependencyInjection/Container.php b/src/Symfony/Component/DependencyInjection/Container.php
index a7b9a94e4f5d..91e0ecbf232d 100644
--- a/src/Symfony/Component/DependencyInjection/Container.php
+++ b/src/Symfony/Component/DependencyInjection/Container.php
@@ -104,7 +104,7 @@ public function isCompiled()
      */
     public function isFrozen()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         return $this->parameterBag instanceof FrozenParameterBag;
     }
@@ -238,7 +238,7 @@ public function has($id)
             // We only check the convention-based factory in a compiled container (i.e. a child class other than a ContainerBuilder,
             // and only when the dumper has not generated the method map (otherwise the method map is considered to be fully populated by the dumper)
             if (!$this->methodMap && !$this instanceof ContainerBuilder && __CLASS__ !== static::class && method_exists($this, 'get'.strtr($id, $this->underscoreMap).'Service')) {
-                @trigger_error('Generating a dumped container without populating the method map is deprecated since 3.2 and will be unsupported in 4.0. Update your dumper to generate the method map.', E_USER_DEPRECATED);
+                @trigger_error('Generating a dumped container without populating the method map is deprecated since Symfony 3.2 and will be unsupported in 4.0. Update your dumper to generate the method map.', E_USER_DEPRECATED);
 
                 return true;
             }
@@ -304,7 +304,7 @@ public function get($id, $invalidBehavior = /* self::EXCEPTION_ON_INVALID_REFERE
                 } elseif (!$this->methodMap && !$this instanceof ContainerBuilder && __CLASS__ !== static::class && method_exists($this, $method = 'get'.strtr($id, $this->underscoreMap).'Service')) {
                     // We only check the convention-based factory in a compiled container (i.e. a child class other than a ContainerBuilder,
                     // and only when the dumper has not generated the method map (otherwise the method map is considered to be fully populated by the dumper)
-                    @trigger_error('Generating a dumped container without populating the method map is deprecated since 3.2 and will be unsupported in 4.0. Update your dumper to generate the method map.', E_USER_DEPRECATED);
+                    @trigger_error('Generating a dumped container without populating the method map is deprecated since Symfony 3.2 and will be unsupported in 4.0. Update your dumper to generate the method map.', E_USER_DEPRECATED);
 
                     return /* self::IGNORE_ON_UNINITIALIZED_REFERENCE */ 4 === $invalidBehavior ? null : $this->{$method}();
                 }
@@ -388,7 +388,7 @@ public function getServiceIds()
         if (!$this->methodMap && !$this instanceof ContainerBuilder && __CLASS__ !== static::class) {
             // We only check the convention-based factory in a compiled container (i.e. a child class other than a ContainerBuilder,
             // and only when the dumper has not generated the method map (otherwise the method map is considered to be fully populated by the dumper)
-            @trigger_error('Generating a dumped container without populating the method map is deprecated since 3.2 and will be unsupported in 4.0. Update your dumper to generate the method map.', E_USER_DEPRECATED);
+            @trigger_error('Generating a dumped container without populating the method map is deprecated since Symfony 3.2 and will be unsupported in 4.0. Update your dumper to generate the method map.', E_USER_DEPRECATED);
 
             foreach (get_class_methods($this) as $method) {
                 if (preg_match('/^get(.+)Service$/', $method, $match)) {
@@ -506,7 +506,7 @@ public function normalizeId($id)
         if (isset($this->normalizedIds[$normalizedId = strtolower($id)])) {
             $normalizedId = $this->normalizedIds[$normalizedId];
             if ($id !== $normalizedId) {
-                @trigger_error(sprintf('Service identifiers will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since version 3.3.', $id, $normalizedId), E_USER_DEPRECATED);
+                @trigger_error(sprintf('Service identifiers will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since Symfony 3.3.', $id, $normalizedId), E_USER_DEPRECATED);
             }
         } else {
             $normalizedId = $this->normalizedIds[$normalizedId] = $id;
diff --git a/src/Symfony/Component/DependencyInjection/ContainerBuilder.php b/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
index 7f0d6071d63e..27a845e42a86 100644
--- a/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
+++ b/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
@@ -319,7 +319,7 @@ public function addObjectResource($object)
      */
     public function addClassResource(\ReflectionClass $class)
     {
-        @trigger_error('The '.__METHOD__.'() method is deprecated since version 3.3 and will be removed in 4.0. Use the addObjectResource() or the getReflectionClass() method instead.', E_USER_DEPRECATED);
+        @trigger_error('The '.__METHOD__.'() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the addObjectResource() or the getReflectionClass() method instead.', E_USER_DEPRECATED);
 
         return $this->addObjectResource($class->name);
     }
@@ -452,7 +452,7 @@ public function addCompilerPass(CompilerPassInterface $pass, $type = PassConfig:
             if (__CLASS__ !== get_class($this)) {
                 $r = new \ReflectionMethod($this, __FUNCTION__);
                 if (__CLASS__ !== $r->getDeclaringClass()->getName()) {
-                    @trigger_error(sprintf('Method %s() will have a third `int $priority = 0` argument in version 4.0. Not defining it is deprecated since 3.2.', __METHOD__), E_USER_DEPRECATED);
+                    @trigger_error(sprintf('Method %s() will have a third `int $priority = 0` argument in version 4.0. Not defining it is deprecated since Symfony 3.2.', __METHOD__), E_USER_DEPRECATED);
                 }
             }
 
@@ -732,7 +732,7 @@ public function compile(/*$resolveEnvPlaceholders = false*/)
             if (__CLASS__ !== static::class) {
                 $r = new \ReflectionMethod($this, __FUNCTION__);
                 if (__CLASS__ !== $r->getDeclaringClass()->getName() && (1 > $r->getNumberOfParameters() || 'resolveEnvPlaceholders' !== $r->getParameters()[0]->name)) {
-                    @trigger_error(sprintf('The %s::compile() method expects a first "$resolveEnvPlaceholders" argument since version 3.3. It will be made mandatory in 4.0.', static::class), E_USER_DEPRECATED);
+                    @trigger_error(sprintf('The %s::compile() method expects a first "$resolveEnvPlaceholders" argument since Symfony 3.3. It will be made mandatory in 4.0.', static::class), E_USER_DEPRECATED);
                 }
             }
             $resolveEnvPlaceholders = false;
@@ -1239,6 +1239,8 @@ private function doResolveServices($value, array &$inlineServices = array())
             $value = $this->doGet((string) $value, $value->getInvalidBehavior(), $inlineServices);
         } elseif ($value instanceof Definition) {
             $value = $this->createService($value, $inlineServices);
+        } elseif ($value instanceof Parameter) {
+            $value = $this->getParameter((string) $value);
         } elseif ($value instanceof Expression) {
             $value = $this->getExpressionLanguage()->evaluate($value, array('container' => $this));
         }
diff --git a/src/Symfony/Component/DependencyInjection/DefinitionDecorator.php b/src/Symfony/Component/DependencyInjection/DefinitionDecorator.php
index 25109d16b5e8..99af39e89dbf 100644
--- a/src/Symfony/Component/DependencyInjection/DefinitionDecorator.php
+++ b/src/Symfony/Component/DependencyInjection/DefinitionDecorator.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\DependencyInjection;
 
-@trigger_error('The '.__NAMESPACE__.'\DefinitionDecorator class is deprecated since version 3.3 and will be removed in 4.0. Use the Symfony\Component\DependencyInjection\ChildDefinition class instead.', E_USER_DEPRECATED);
+@trigger_error('The '.__NAMESPACE__.'\DefinitionDecorator class is deprecated since Symfony 3.3 and will be removed in 4.0. Use the Symfony\Component\DependencyInjection\ChildDefinition class instead.', E_USER_DEPRECATED);
 
 class_exists(ChildDefinition::class);
 
diff --git a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
index 5e402556af6d..4ff85f51b374 100644
--- a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
+++ b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
@@ -79,7 +79,7 @@ class PhpDumper extends Dumper
     public function __construct(ContainerBuilder $container)
     {
         if (!$container->isCompiled()) {
-            @trigger_error('Dumping an uncompiled ContainerBuilder is deprecated since version 3.3 and will not be supported anymore in 4.0. Compile the container beforehand.', E_USER_DEPRECATED);
+            @trigger_error('Dumping an uncompiled ContainerBuilder is deprecated since Symfony 3.3 and will not be supported anymore in 4.0. Compile the container beforehand.', E_USER_DEPRECATED);
         }
 
         parent::__construct($container);
@@ -211,6 +211,8 @@ public function dump(array $options = array())
             array_pop($code);
             $code["Container{$hash}/{$options['class']}.php"] = substr_replace($files[$options['class'].'.php'], "<?php\n\nnamespace Container{$hash};\n", 0, 6);
             $namespaceLine = $this->namespace ? "\nnamespace {$this->namespace};\n" : '';
+            $time = time();
+            $id = hash('crc32', $hash.$time);
 
             $code[$options['class'].'.php'] = <<<EOF
 <?php
@@ -229,7 +231,11 @@ public function dump(array $options = array())
     \\class_alias(\\Container{$hash}\\{$options['class']}::class, {$options['class']}::class, false);
 }
 
-return new \\Container{$hash}\\{$options['class']}();
+return new \\Container{$hash}\\{$options['class']}(array(
+    'container.build_hash' => '$hash',
+    'container.build_id' => '$id',
+    'container.build_time' => $time,
+));
 
 EOF;
         } else {
@@ -564,7 +570,7 @@ private function isTrivialInstance(Definition $definition)
         }
 
         foreach ($definition->getArguments() as $arg) {
-            if (!$arg) {
+            if (!$arg || $arg instanceof Parameter) {
                 continue;
             }
             if (is_array($arg) && 3 >= count($arg)) {
@@ -572,7 +578,7 @@ private function isTrivialInstance(Definition $definition)
                     if ($this->dumpValue($k) !== $this->dumpValue($k, false)) {
                         return false;
                     }
-                    if (!$v) {
+                    if (!$v || $v instanceof Parameter) {
                         continue;
                     }
                     if ($v instanceof Reference && $this->container->has($id = (string) $v) && $this->container->findDefinition($id)->isSynthetic()) {
@@ -892,10 +898,10 @@ private function addNewInstance(Definition $definition, $return, $instantiation,
                 }
 
                 if (0 === strpos($class, 'new ')) {
-                    return $return.sprintf("(%s)->%s(%s);\n", $this->dumpValue($callable[0]), $callable[1], $arguments ? implode(', ', $arguments) : '');
+                    return $return.sprintf("(%s)->%s(%s);\n", $class, $callable[1], $arguments ? implode(', ', $arguments) : '');
                 }
 
-                return $return.sprintf("\\call_user_func(array(%s, '%s')%s);\n", $this->dumpValue($callable[0]), $callable[1], $arguments ? ', '.implode(', ', $arguments) : '');
+                return $return.sprintf("\\call_user_func(array(%s, '%s')%s);\n", $class, $callable[1], $arguments ? ', '.implode(', ', $arguments) : '');
             }
 
             return $return.sprintf("%s(%s);\n", $this->dumpLiteralClass($this->dumpValue($callable)), $arguments ? implode(', ', $arguments) : '');
@@ -957,6 +963,11 @@ public function __construct()
 
 EOF;
         }
+        if ($this->asFiles) {
+            $code = str_replace('$parameters', "\$buildParameters;\n    private \$parameters", $code);
+            $code = str_replace('__construct()', '__construct(array $buildParameters = array())', $code);
+            $code .= "        \$this->buildParameters = \$buildParameters;\n";
+        }
 
         if ($this->container->isCompiled()) {
             if ($this->container->getParameterBag()->all()) {
@@ -996,7 +1007,7 @@ public function isCompiled()
 
     public function isFrozen()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         return true;
     }
@@ -1283,6 +1294,10 @@ private function addDefaultParametersMethod()
 
     public function getParameter($name)
     {
+        $name = (string) $name;
+        if (isset($this->buildParameters[$name])) {
+            return $this->buildParameters[$name];
+        }
         if (!(isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters))) {
             $name = $this->normalizeParameterName($name);
 
@@ -1299,6 +1314,10 @@ public function getParameter($name)
 
     public function hasParameter($name)
     {
+        $name = (string) $name;
+        if (isset($this->buildParameters[$name])) {
+            return true;
+        }
         $name = $this->normalizeParameterName($name);
 
         return isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters);
@@ -1316,6 +1335,9 @@ public function getParameterBag()
             foreach ($this->loadedDynamicParameters as $name => $loaded) {
                 $parameters[$name] = $loaded ? $this->dynamicParameters[$name] : $this->getDynamicParameter($name);
             }
+            foreach ($this->buildParameters as $name => $value) {
+                $parameters[$name] = $value;
+            }
             $this->parameterBag = new FrozenParameterBag($parameters);
         }
 
@@ -1323,6 +1345,9 @@ public function getParameterBag()
     }
 
 EOF;
+            if (!$this->asFiles) {
+                $code = preg_replace('/^.*buildParameters.*\n.*\n.*\n/m', '', $code);
+            }
 
             if ($dynamicPhp) {
                 $loadedDynamicParameters = $this->exportParameters(array_combine(array_keys($dynamicPhp), array_fill(0, count($dynamicPhp), false)), '', 8);
@@ -1371,7 +1396,7 @@ private function normalizeParameterName($name)
         if (isset($this->normalizedParameterNames[$normalizedName = strtolower($name)]) || isset($this->parameters[$normalizedName]) || array_key_exists($normalizedName, $this->parameters)) {
             $normalizedName = isset($this->normalizedParameterNames[$normalizedName]) ? $this->normalizedParameterNames[$normalizedName] : $normalizedName;
             if ((string) $name !== $normalizedName) {
-                @trigger_error(sprintf('Parameter names will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since version 3.4.', $name, $normalizedName), E_USER_DEPRECATED);
+                @trigger_error(sprintf('Parameter names will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since Symfony 3.4.', $name, $normalizedName), E_USER_DEPRECATED);
             }
         } else {
             $normalizedName = $this->normalizedParameterNames[$normalizedName] = (string) $name;
@@ -1717,16 +1742,21 @@ private function dumpValue($value, $interpolate = true)
                         throw new RuntimeException(sprintf('Cannot dump definition because of invalid factory method (%s)', $factory[1] ?: 'n/a'));
                     }
 
+                    $class = $this->dumpValue($factory[0]);
                     if (is_string($factory[0])) {
-                        return sprintf('%s::%s(%s)', $this->dumpLiteralClass($this->dumpValue($factory[0])), $factory[1], implode(', ', $arguments));
+                        return sprintf('%s::%s(%s)', $this->dumpLiteralClass($class), $factory[1], implode(', ', $arguments));
                     }
 
                     if ($factory[0] instanceof Definition) {
-                        return sprintf("\\call_user_func(array(%s, '%s')%s)", $this->dumpValue($factory[0]), $factory[1], count($arguments) > 0 ? ', '.implode(', ', $arguments) : '');
+                        if (0 === strpos($class, 'new ')) {
+                            return sprintf('(%s)->%s(%s)', $class, $factory[1], implode(', ', $arguments));
+                        }
+
+                        return sprintf("\\call_user_func(array(%s, '%s')%s)", $class, $factory[1], count($arguments) > 0 ? ', '.implode(', ', $arguments) : '');
                     }
 
                     if ($factory[0] instanceof Reference) {
-                        return sprintf('%s->%s(%s)', $this->dumpValue($factory[0]), $factory[1], implode(', ', $arguments));
+                        return sprintf('%s->%s(%s)', $class, $factory[1], implode(', ', $arguments));
                     }
                 }
 
diff --git a/src/Symfony/Component/DependencyInjection/LICENSE b/src/Symfony/Component/DependencyInjection/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/DependencyInjection/LICENSE
+++ b/src/Symfony/Component/DependencyInjection/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php b/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php
index 598cf36f859a..6b3eed9338d3 100644
--- a/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php
+++ b/src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php
@@ -500,7 +500,7 @@ private function getArgumentsAsPhp(\DOMElement $node, $name, $file, $lowercase =
                         throw new InvalidArgumentException(sprintf('Tag "<%s>" with type="service" has no or empty "id" attribute in "%s".', $name, $file));
                     }
                     if ($arg->hasAttribute('strict')) {
-                        @trigger_error(sprintf('The "strict" attribute used when referencing the "%s" service is deprecated since version 3.3 and will be removed in 4.0.', $arg->getAttribute('id')), E_USER_DEPRECATED);
+                        @trigger_error(sprintf('The "strict" attribute used when referencing the "%s" service is deprecated since Symfony 3.3 and will be removed in 4.0.', $arg->getAttribute('id')), E_USER_DEPRECATED);
                     }
 
                     $arguments[$key] = new Reference($arg->getAttribute('id'), $invalidBehavior);
diff --git a/src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php b/src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php
index 81d3ccb88155..79adcf2161b7 100644
--- a/src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php
+++ b/src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php
@@ -476,6 +476,9 @@ private function parseDefinition($id, $service, $file, array $defaults)
                     $args = isset($call[1]) ? $this->resolveServices($call[1], $file) : array();
                 }
 
+                if (!is_array($args)) {
+                    throw new InvalidArgumentException(sprintf('The second parameter for function call "%s" must be an array of its arguments for service "%s" in %s. Check your YAML syntax.', $method, $id, $file));
+                }
                 $definition->addMethodCall($method, $args);
             }
         }
@@ -796,7 +799,7 @@ private function resolveServices($value, $file, $isParameter = false)
             }
 
             if ('=' === substr($value, -1)) {
-                @trigger_error(sprintf('The "=" suffix that used to disable strict references in Symfony 2.x is deprecated since 3.3 and will be unsupported in 4.0. Remove it in "%s".', $value), E_USER_DEPRECATED);
+                @trigger_error(sprintf('The "=" suffix that used to disable strict references in Symfony 2.x is deprecated since Symfony 3.3 and will be unsupported in 4.0. Remove it in "%s".', $value), E_USER_DEPRECATED);
                 $value = substr($value, 0, -1);
             }
 
diff --git a/src/Symfony/Component/DependencyInjection/ParameterBag/ParameterBag.php b/src/Symfony/Component/DependencyInjection/ParameterBag/ParameterBag.php
index f5e8da5de8a0..257c4334300d 100644
--- a/src/Symfony/Component/DependencyInjection/ParameterBag/ParameterBag.php
+++ b/src/Symfony/Component/DependencyInjection/ParameterBag/ParameterBag.php
@@ -296,7 +296,7 @@ private function normalizeName($name)
         if (isset($this->normalizedNames[$normalizedName = strtolower($name)])) {
             $normalizedName = $this->normalizedNames[$normalizedName];
             if ((string) $name !== $normalizedName) {
-                @trigger_error(sprintf('Parameter names will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since version 3.4.', $name, $normalizedName), E_USER_DEPRECATED);
+                @trigger_error(sprintf('Parameter names will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since Symfony 3.4.', $name, $normalizedName), E_USER_DEPRECATED);
             }
         } else {
             $normalizedName = $this->normalizedNames[$normalizedName] = (string) $name;
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutowirePassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutowirePassTest.php
index e550bb214777..36382a00454e 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutowirePassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/AutowirePassTest.php
@@ -297,8 +297,8 @@ public function testWithTypeSet()
 
     /**
      * @group legacy
-     * @expectedDeprecation Relying on service auto-registration for type "Symfony\Component\DependencyInjection\Tests\Compiler\Lille" is deprecated since version 3.4 and won't be supported in 4.0. Create a service named "Symfony\Component\DependencyInjection\Tests\Compiler\Lille" instead.
-     * @expectedDeprecation Relying on service auto-registration for type "Symfony\Component\DependencyInjection\Tests\Compiler\Dunglas" is deprecated since version 3.4 and won't be supported in 4.0. Create a service named "Symfony\Component\DependencyInjection\Tests\Compiler\Dunglas" instead.
+     * @expectedDeprecation Relying on service auto-registration for type "Symfony\Component\DependencyInjection\Tests\Compiler\Lille" is deprecated since Symfony 3.4 and won't be supported in 4.0. Create a service named "Symfony\Component\DependencyInjection\Tests\Compiler\Lille" instead.
+     * @expectedDeprecation Relying on service auto-registration for type "Symfony\Component\DependencyInjection\Tests\Compiler\Dunglas" is deprecated since Symfony 3.4 and won't be supported in 4.0. Create a service named "Symfony\Component\DependencyInjection\Tests\Compiler\Dunglas" instead.
      */
     public function testCreateDefinition()
     {
@@ -616,7 +616,7 @@ public function testExplicitMethodInjection()
 
     /**
      * @group legacy
-     * @expectedDeprecation Relying on service auto-registration for type "Symfony\Component\DependencyInjection\Tests\Compiler\A" is deprecated since version 3.4 and won't be supported in 4.0. Create a service named "Symfony\Component\DependencyInjection\Tests\Compiler\A" instead.
+     * @expectedDeprecation Relying on service auto-registration for type "Symfony\Component\DependencyInjection\Tests\Compiler\A" is deprecated since Symfony 3.4 and won't be supported in 4.0. Create a service named "Symfony\Component\DependencyInjection\Tests\Compiler\A" instead.
      */
     public function testTypedReference()
     {
@@ -703,6 +703,23 @@ public function testSetterInjectionCollisionThrowsException()
         $pass->process($container);
     }
 
+    /**
+     * @expectedException \Symfony\Component\DependencyInjection\Exception\AutowiringFailedException
+     * @expectedExceptionMessage Cannot autowire service "my_service": argument "$i" of method "Symfony\Component\DependencyInjection\Tests\Compiler\K::__construct()" references interface "Symfony\Component\DependencyInjection\Tests\Compiler\IInterface" but no such service exists. Did you create a class that implements this interface?
+     */
+    public function testInterfaceWithNoImplementationSuggestToWriteOne()
+    {
+        $container = new ContainerBuilder();
+
+        $aDefinition = $container->register('my_service', K::class);
+        $aDefinition->setAutowired(true);
+
+        (new AutowireRequiredMethodsPass())->process($container);
+
+        $pass = new AutowirePass();
+        $pass->process($container);
+    }
+
     /**
      * @group legacy
      * @expectedDeprecation Autowiring services based on the types they implement is deprecated since Symfony 3.3 and won't be supported in version 4.0. You should rename (or alias) the "foo" service to "Symfony\Component\DependencyInjection\Tests\Compiler\Foo" instead.
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterEnvVarProcessorsPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterEnvVarProcessorsPassTest.php
index d807a6fa41ba..cddb62dce982 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterEnvVarProcessorsPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterEnvVarProcessorsPassTest.php
@@ -26,7 +26,7 @@ public function testSimpleProcessor()
         (new RegisterEnvVarProcessorsPass())->process($container);
 
         $this->assertTrue($container->has('container.env_var_processors_locator'));
-        $this->assertInstanceof(SimpleProcessor::class, $container->get('container.env_var_processors_locator')->get('foo'));
+        $this->assertInstanceOf(SimpleProcessor::class, $container->get('container.env_var_processors_locator')->get('foo'));
 
         $expected = array(
             'foo' => array('string'),
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveInstanceofConditionalsPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveInstanceofConditionalsPassTest.php
index 1ca36e974fd8..21a2810578e9 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveInstanceofConditionalsPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/ResolveInstanceofConditionalsPassTest.php
@@ -32,7 +32,7 @@ public function testProcess()
         $parent = 'instanceof.'.parent::class.'.0.foo';
         $def = $container->getDefinition('foo');
         $this->assertEmpty($def->getInstanceofConditionals());
-        $this->assertInstanceof(ChildDefinition::class, $def);
+        $this->assertInstanceOf(ChildDefinition::class, $def);
         $this->assertTrue($def->isAutowired());
         $this->assertSame($parent, $def->getParent());
         $this->assertSame(array('tag' => array(array()), 'baz' => array(array('attr' => 123))), $def->getTags());
diff --git a/src/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php b/src/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php
index 100296291ad8..197bfae84453 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php
@@ -1348,7 +1348,7 @@ public function testPrivateServiceTriggersDeprecation()
 
     /**
      * @group legacy
-     * @expectedDeprecation Parameter names will be made case sensitive in Symfony 4.0. Using "FOO" instead of "foo" is deprecated since version 3.4.
+     * @expectedDeprecation Parameter names will be made case sensitive in Symfony 4.0. Using "FOO" instead of "foo" is deprecated since Symfony 3.4.
      */
     public function testParameterWithMixedCase()
     {
diff --git a/src/Symfony/Component/DependencyInjection/Tests/ContainerTest.php b/src/Symfony/Component/DependencyInjection/Tests/ContainerTest.php
index 84271ab02667..4307107072d4 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/ContainerTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/ContainerTest.php
@@ -85,8 +85,8 @@ public function testCompile()
 
     /**
      * @group legacy
-     * @expectedDeprecation The Symfony\Component\DependencyInjection\Container::isFrozen() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.
-     * @expectedDeprecation The Symfony\Component\DependencyInjection\Container::isFrozen() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.
+     * @expectedDeprecation The Symfony\Component\DependencyInjection\Container::isFrozen() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.
+     * @expectedDeprecation The Symfony\Component\DependencyInjection\Container::isFrozen() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.
      */
     public function testIsFrozen()
     {
@@ -136,8 +136,8 @@ public function testGetSetParameter()
 
     /**
      * @group legacy
-     * @expectedDeprecation Parameter names will be made case sensitive in Symfony 4.0. Using "Foo" instead of "foo" is deprecated since version 3.4.
-     * @expectedDeprecation Parameter names will be made case sensitive in Symfony 4.0. Using "FOO" instead of "foo" is deprecated since version 3.4.
+     * @expectedDeprecation Parameter names will be made case sensitive in Symfony 4.0. Using "Foo" instead of "foo" is deprecated since Symfony 3.4.
+     * @expectedDeprecation Parameter names will be made case sensitive in Symfony 4.0. Using "FOO" instead of "foo" is deprecated since Symfony 3.4.
      */
     public function testGetSetParameterWithMixedCase()
     {
@@ -162,7 +162,7 @@ public function testGetServiceIds()
 
     /**
      * @group legacy
-     * @expectedDeprecation Generating a dumped container without populating the method map is deprecated since 3.2 and will be unsupported in 4.0. Update your dumper to generate the method map.
+     * @expectedDeprecation Generating a dumped container without populating the method map is deprecated since Symfony 3.2 and will be unsupported in 4.0. Update your dumper to generate the method map.
      */
     public function testGetLegacyServiceIds()
     {
@@ -244,7 +244,7 @@ public function testGet()
 
     /**
      * @group legacy
-     * @expectedDeprecation Service identifiers will be made case sensitive in Symfony 4.0. Using "Foo" instead of "foo" is deprecated since version 3.3.
+     * @expectedDeprecation Service identifiers will be made case sensitive in Symfony 4.0. Using "Foo" instead of "foo" is deprecated since Symfony 3.3.
      */
     public function testGetInsensitivity()
     {
@@ -255,7 +255,7 @@ public function testGetInsensitivity()
 
     /**
      * @group legacy
-     * @expectedDeprecation Service identifiers will be made case sensitive in Symfony 4.0. Using "foo" instead of "Foo" is deprecated since version 3.3.
+     * @expectedDeprecation Service identifiers will be made case sensitive in Symfony 4.0. Using "foo" instead of "Foo" is deprecated since Symfony 3.3.
      */
     public function testNormalizeIdKeepsCase()
     {
@@ -266,11 +266,11 @@ public function testNormalizeIdKeepsCase()
 
     /**
      * @group legacy
-     * @expectedDeprecation Service identifiers will be made case sensitive in Symfony 4.0. Using "Foo" instead of "foo" is deprecated since version 3.3.
-     * @expectedDeprecation Generating a dumped container without populating the method map is deprecated since 3.2 and will be unsupported in 4.0. Update your dumper to generate the method map.
-     * @expectedDeprecation Generating a dumped container without populating the method map is deprecated since 3.2 and will be unsupported in 4.0. Update your dumper to generate the method map.
-     * @expectedDeprecation Generating a dumped container without populating the method map is deprecated since 3.2 and will be unsupported in 4.0. Update your dumper to generate the method map.
-     * @expectedDeprecation Generating a dumped container without populating the method map is deprecated since 3.2 and will be unsupported in 4.0. Update your dumper to generate the method map.
+     * @expectedDeprecation Service identifiers will be made case sensitive in Symfony 4.0. Using "Foo" instead of "foo" is deprecated since Symfony 3.3.
+     * @expectedDeprecation Generating a dumped container without populating the method map is deprecated since Symfony 3.2 and will be unsupported in 4.0. Update your dumper to generate the method map.
+     * @expectedDeprecation Generating a dumped container without populating the method map is deprecated since Symfony 3.2 and will be unsupported in 4.0. Update your dumper to generate the method map.
+     * @expectedDeprecation Generating a dumped container without populating the method map is deprecated since Symfony 3.2 and will be unsupported in 4.0. Update your dumper to generate the method map.
+     * @expectedDeprecation Generating a dumped container without populating the method map is deprecated since Symfony 3.2 and will be unsupported in 4.0. Update your dumper to generate the method map.
      */
     public function testLegacyGet()
     {
@@ -368,10 +368,10 @@ public function testHas()
 
     /**
      * @group legacy
-     * @expectedDeprecation Generating a dumped container without populating the method map is deprecated since 3.2 and will be unsupported in 4.0. Update your dumper to generate the method map.
-     * @expectedDeprecation Generating a dumped container without populating the method map is deprecated since 3.2 and will be unsupported in 4.0. Update your dumper to generate the method map.
-     * @expectedDeprecation Generating a dumped container without populating the method map is deprecated since 3.2 and will be unsupported in 4.0. Update your dumper to generate the method map.
-     * @expectedDeprecation Generating a dumped container without populating the method map is deprecated since 3.2 and will be unsupported in 4.0. Update your dumper to generate the method map.
+     * @expectedDeprecation Generating a dumped container without populating the method map is deprecated since Symfony 3.2 and will be unsupported in 4.0. Update your dumper to generate the method map.
+     * @expectedDeprecation Generating a dumped container without populating the method map is deprecated since Symfony 3.2 and will be unsupported in 4.0. Update your dumper to generate the method map.
+     * @expectedDeprecation Generating a dumped container without populating the method map is deprecated since Symfony 3.2 and will be unsupported in 4.0. Update your dumper to generate the method map.
+     * @expectedDeprecation Generating a dumped container without populating the method map is deprecated since Symfony 3.2 and will be unsupported in 4.0. Update your dumper to generate the method map.
      */
     public function testLegacyHas()
     {
@@ -556,6 +556,7 @@ class ProjectServiceContainer extends Container
     public $__foo_bar;
     public $__foo_baz;
     public $__internal;
+    protected $privates;
     protected $methodMap = array(
         'internal' => 'getInternalService',
         'bar' => 'getBarService',
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php b/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
index d9b3c5c864d2..4a882828a3f3 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
@@ -139,7 +139,7 @@ public function testAddParameters()
 
     /**
      * @group legacy
-     * @expectedDeprecation Dumping an uncompiled ContainerBuilder is deprecated since version 3.3 and will not be supported anymore in 4.0. Compile the container beforehand.
+     * @expectedDeprecation Dumping an uncompiled ContainerBuilder is deprecated since Symfony 3.3 and will not be supported anymore in 4.0. Compile the container beforehand.
      */
     public function testAddServiceWithoutCompilation()
     {
@@ -925,9 +925,9 @@ public function testPrivateServiceTriggersDeprecation()
 
     /**
      * @group legacy
-     * @expectedDeprecation Parameter names will be made case sensitive in Symfony 4.0. Using "foo" instead of "Foo" is deprecated since version 3.4.
-     * @expectedDeprecation Parameter names will be made case sensitive in Symfony 4.0. Using "FOO" instead of "Foo" is deprecated since version 3.4.
-     * @expectedDeprecation Parameter names will be made case sensitive in Symfony 4.0. Using "bar" instead of "BAR" is deprecated since version 3.4.
+     * @expectedDeprecation Parameter names will be made case sensitive in Symfony 4.0. Using "foo" instead of "Foo" is deprecated since Symfony 3.4.
+     * @expectedDeprecation Parameter names will be made case sensitive in Symfony 4.0. Using "FOO" instead of "Foo" is deprecated since Symfony 3.4.
+     * @expectedDeprecation Parameter names will be made case sensitive in Symfony 4.0. Using "bar" instead of "BAR" is deprecated since Symfony 3.4.
      */
     public function testParameterWithMixedCase()
     {
@@ -947,7 +947,7 @@ public function testParameterWithMixedCase()
 
     /**
      * @group legacy
-     * @expectedDeprecation Parameter names will be made case sensitive in Symfony 4.0. Using "FOO" instead of "foo" is deprecated since version 3.4.
+     * @expectedDeprecation Parameter names will be made case sensitive in Symfony 4.0. Using "FOO" instead of "foo" is deprecated since Symfony 3.4.
      */
     public function testParameterWithLowerCase()
     {
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/includes/autowiring_classes.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/includes/autowiring_classes.php
index bf99eff6a283..990a873f3498 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/includes/autowiring_classes.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/includes/autowiring_classes.php
@@ -90,6 +90,13 @@ public function __construct(I $i)
     }
 }
 
+class K
+{
+    public function __construct(IInterface $i)
+    {
+    }
+}
+
 interface CollisionInterface
 {
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1-1.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1-1.php
index 88518409038f..bdd0d101ab8d 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1-1.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1-1.php
@@ -48,7 +48,7 @@ public function isCompiled()
 
     public function isFrozen()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         return true;
     }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1.php
index 8d7aab16c77b..85830af78c1d 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1.php
@@ -46,7 +46,7 @@ public function isCompiled()
 
     public function isFrozen()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         return true;
     }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services10.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services10.php
index 3fae1aea6582..a7b43ceefbde 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services10.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services10.php
@@ -51,7 +51,7 @@ public function isCompiled()
 
     public function isFrozen()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         return true;
     }
@@ -68,6 +68,7 @@ protected function getTestService()
 
     public function getParameter($name)
     {
+        $name = (string) $name;
         if (!(isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters))) {
             $name = $this->normalizeParameterName($name);
 
@@ -84,6 +85,7 @@ public function getParameter($name)
 
     public function hasParameter($name)
     {
+        $name = (string) $name;
         $name = $this->normalizeParameterName($name);
 
         return isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters);
@@ -131,7 +133,7 @@ private function normalizeParameterName($name)
         if (isset($this->normalizedParameterNames[$normalizedName = strtolower($name)]) || isset($this->parameters[$normalizedName]) || array_key_exists($normalizedName, $this->parameters)) {
             $normalizedName = isset($this->normalizedParameterNames[$normalizedName]) ? $this->normalizedParameterNames[$normalizedName] : $normalizedName;
             if ((string) $name !== $normalizedName) {
-                @trigger_error(sprintf('Parameter names will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since version 3.4.', $name, $normalizedName), E_USER_DEPRECATED);
+                @trigger_error(sprintf('Parameter names will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since Symfony 3.4.', $name, $normalizedName), E_USER_DEPRECATED);
             }
         } else {
             $normalizedName = $this->normalizedParameterNames[$normalizedName] = (string) $name;
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services12.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services12.php
index 48750c480f0e..9947d36ac548 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services12.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services12.php
@@ -55,7 +55,7 @@ public function isCompiled()
 
     public function isFrozen()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         return true;
     }
@@ -72,6 +72,7 @@ protected function getTestService()
 
     public function getParameter($name)
     {
+        $name = (string) $name;
         if (!(isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters))) {
             $name = $this->normalizeParameterName($name);
 
@@ -88,6 +89,7 @@ public function getParameter($name)
 
     public function hasParameter($name)
     {
+        $name = (string) $name;
         $name = $this->normalizeParameterName($name);
 
         return isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters);
@@ -145,7 +147,7 @@ private function normalizeParameterName($name)
         if (isset($this->normalizedParameterNames[$normalizedName = strtolower($name)]) || isset($this->parameters[$normalizedName]) || array_key_exists($normalizedName, $this->parameters)) {
             $normalizedName = isset($this->normalizedParameterNames[$normalizedName]) ? $this->normalizedParameterNames[$normalizedName] : $normalizedName;
             if ((string) $name !== $normalizedName) {
-                @trigger_error(sprintf('Parameter names will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since version 3.4.', $name, $normalizedName), E_USER_DEPRECATED);
+                @trigger_error(sprintf('Parameter names will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since Symfony 3.4.', $name, $normalizedName), E_USER_DEPRECATED);
             }
         } else {
             $normalizedName = $this->normalizedParameterNames[$normalizedName] = (string) $name;
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services13.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services13.php
index 577e0221d018..04705a29e469 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services13.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services13.php
@@ -50,7 +50,7 @@ public function isCompiled()
 
     public function isFrozen()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         return true;
     }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services19.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services19.php
index 0b2682420ff5..667dd852a0fe 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services19.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services19.php
@@ -50,7 +50,7 @@ public function isCompiled()
 
     public function isFrozen()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         return true;
     }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services24.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services24.php
index 02a7a1b0c265..1be6319eef07 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services24.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services24.php
@@ -49,7 +49,7 @@ public function isCompiled()
 
     public function isFrozen()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         return true;
     }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services26.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services26.php
index 5c8773c38034..16b99007aeca 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services26.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services26.php
@@ -56,7 +56,7 @@ public function isCompiled()
 
     public function isFrozen()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         return true;
     }
@@ -85,6 +85,7 @@ protected function getTestService()
 
     public function getParameter($name)
     {
+        $name = (string) $name;
         if (!(isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters))) {
             $name = $this->normalizeParameterName($name);
 
@@ -101,6 +102,7 @@ public function getParameter($name)
 
     public function hasParameter($name)
     {
+        $name = (string) $name;
         $name = $this->normalizeParameterName($name);
 
         return isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters);
@@ -167,7 +169,7 @@ private function normalizeParameterName($name)
         if (isset($this->normalizedParameterNames[$normalizedName = strtolower($name)]) || isset($this->parameters[$normalizedName]) || array_key_exists($normalizedName, $this->parameters)) {
             $normalizedName = isset($this->normalizedParameterNames[$normalizedName]) ? $this->normalizedParameterNames[$normalizedName] : $normalizedName;
             if ((string) $name !== $normalizedName) {
-                @trigger_error(sprintf('Parameter names will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since version 3.4.', $name, $normalizedName), E_USER_DEPRECATED);
+                @trigger_error(sprintf('Parameter names will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since Symfony 3.4.', $name, $normalizedName), E_USER_DEPRECATED);
             }
         } else {
             $normalizedName = $this->normalizedParameterNames[$normalizedName] = (string) $name;
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services33.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services33.php
index 1a8b3f0c5215..3e308c1d4d36 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services33.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services33.php
@@ -54,7 +54,7 @@ public function isCompiled()
 
     public function isFrozen()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         return true;
     }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services8.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services8.php
index 8db48ade93bb..56e2a98cc5e0 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services8.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services8.php
@@ -48,13 +48,14 @@ public function isCompiled()
 
     public function isFrozen()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         return true;
     }
 
     public function getParameter($name)
     {
+        $name = (string) $name;
         if (!(isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters))) {
             $name = $this->normalizeParameterName($name);
 
@@ -71,6 +72,7 @@ public function getParameter($name)
 
     public function hasParameter($name)
     {
+        $name = (string) $name;
         $name = $this->normalizeParameterName($name);
 
         return isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters);
@@ -118,7 +120,7 @@ private function normalizeParameterName($name)
         if (isset($this->normalizedParameterNames[$normalizedName = strtolower($name)]) || isset($this->parameters[$normalizedName]) || array_key_exists($normalizedName, $this->parameters)) {
             $normalizedName = isset($this->normalizedParameterNames[$normalizedName]) ? $this->normalizedParameterNames[$normalizedName] : $normalizedName;
             if ((string) $name !== $normalizedName) {
-                @trigger_error(sprintf('Parameter names will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since version 3.4.', $name, $normalizedName), E_USER_DEPRECATED);
+                @trigger_error(sprintf('Parameter names will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since Symfony 3.4.', $name, $normalizedName), E_USER_DEPRECATED);
             }
         } else {
             $normalizedName = $this->normalizedParameterNames[$normalizedName] = (string) $name;
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_as_files.txt b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_as_files.txt
index 0ee660df4dbf..19e538b1846e 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_as_files.txt
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_as_files.txt
@@ -276,15 +276,17 @@ use Symfony\Component\DependencyInjection\ParameterBag\FrozenParameterBag;
  */
 class ProjectServiceContainer extends Container
 {
+    private $buildParameters;
     private $parameters;
     private $targetDirs = array();
 
-    public function __construct()
+    public function __construct(array $buildParameters = array())
     {
         $dir = $this->targetDirs[0] = \dirname(__DIR__);
         for ($i = 1; $i <= 5; ++$i) {
             $this->targetDirs[$i] = $dir = \dirname($dir);
         }
+        $this->buildParameters = $buildParameters;
         $this->parameters = $this->getDefaultParameters();
 
         $this->services = array();
@@ -344,7 +346,7 @@ class ProjectServiceContainer extends Container
 
     public function isFrozen()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         return true;
     }
@@ -382,6 +384,10 @@ class ProjectServiceContainer extends Container
 
     public function getParameter($name)
     {
+        $name = (string) $name;
+        if (isset($this->buildParameters[$name])) {
+            return $this->buildParameters[$name];
+        }
         if (!(isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters))) {
             $name = $this->normalizeParameterName($name);
 
@@ -398,6 +404,10 @@ class ProjectServiceContainer extends Container
 
     public function hasParameter($name)
     {
+        $name = (string) $name;
+        if (isset($this->buildParameters[$name])) {
+            return true;
+        }
         $name = $this->normalizeParameterName($name);
 
         return isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters);
@@ -415,6 +425,9 @@ class ProjectServiceContainer extends Container
             foreach ($this->loadedDynamicParameters as $name => $loaded) {
                 $parameters[$name] = $loaded ? $this->dynamicParameters[$name] : $this->getDynamicParameter($name);
             }
+            foreach ($this->buildParameters as $name => $value) {
+                $parameters[$name] = $value;
+            }
             $this->parameterBag = new FrozenParameterBag($parameters);
         }
 
@@ -445,7 +458,7 @@ class ProjectServiceContainer extends Container
         if (isset($this->normalizedParameterNames[$normalizedName = strtolower($name)]) || isset($this->parameters[$normalizedName]) || array_key_exists($normalizedName, $this->parameters)) {
             $normalizedName = isset($this->normalizedParameterNames[$normalizedName]) ? $this->normalizedParameterNames[$normalizedName] : $normalizedName;
             if ((string) $name !== $normalizedName) {
-                @trigger_error(sprintf('Parameter names will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since version 3.4.', $name, $normalizedName), E_USER_DEPRECATED);
+                @trigger_error(sprintf('Parameter names will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since Symfony 3.4.', $name, $normalizedName), E_USER_DEPRECATED);
             }
         } else {
             $normalizedName = $this->normalizedParameterNames[$normalizedName] = (string) $name;
@@ -485,6 +498,10 @@ if (!\class_exists(ProjectServiceContainer::class, false)) {
     \class_alias(\Container%s\ProjectServiceContainer::class, ProjectServiceContainer::class, false);
 }
 
-return new \Container%s\ProjectServiceContainer();
+return new \Container%s\ProjectServiceContainer(array(
+    'container.build_hash' => '%s',
+    'container.build_id' => '%s',
+    'container.build_time' => %d,
+));
 
 )
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_compiled.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_compiled.php
index 424bb1dbfc63..1af126fa3c96 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_compiled.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_compiled.php
@@ -89,7 +89,7 @@ public function isCompiled()
 
     public function isFrozen()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         return true;
     }
@@ -386,6 +386,7 @@ protected function getTaggedIteratorFooService()
 
     public function getParameter($name)
     {
+        $name = (string) $name;
         if (!(isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters))) {
             $name = $this->normalizeParameterName($name);
 
@@ -402,6 +403,7 @@ public function getParameter($name)
 
     public function hasParameter($name)
     {
+        $name = (string) $name;
         $name = $this->normalizeParameterName($name);
 
         return isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters);
@@ -449,7 +451,7 @@ private function normalizeParameterName($name)
         if (isset($this->normalizedParameterNames[$normalizedName = strtolower($name)]) || isset($this->parameters[$normalizedName]) || array_key_exists($normalizedName, $this->parameters)) {
             $normalizedName = isset($this->normalizedParameterNames[$normalizedName]) ? $this->normalizedParameterNames[$normalizedName] : $normalizedName;
             if ((string) $name !== $normalizedName) {
-                @trigger_error(sprintf('Parameter names will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since version 3.4.', $name, $normalizedName), E_USER_DEPRECATED);
+                @trigger_error(sprintf('Parameter names will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since Symfony 3.4.', $name, $normalizedName), E_USER_DEPRECATED);
             }
         } else {
             $normalizedName = $this->normalizedParameterNames[$normalizedName] = (string) $name;
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_private.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_private.php
index ea0e155f3073..45fb2432c33c 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_private.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_private.php
@@ -60,7 +60,7 @@ public function isCompiled()
 
     public function isFrozen()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         return true;
     }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_public.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_public.php
index 36961d1c853d..be18eb183abd 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_public.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_almost_circular_public.php
@@ -60,7 +60,7 @@ public function isCompiled()
 
     public function isFrozen()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         return true;
     }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_array_params.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_array_params.php
index 659aef172f81..4776d98c3108 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_array_params.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_array_params.php
@@ -55,7 +55,7 @@ public function isCompiled()
 
     public function isFrozen()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         return true;
     }
@@ -76,6 +76,7 @@ protected function getBarService()
 
     public function getParameter($name)
     {
+        $name = (string) $name;
         if (!(isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters))) {
             $name = $this->normalizeParameterName($name);
 
@@ -92,6 +93,7 @@ public function getParameter($name)
 
     public function hasParameter($name)
     {
+        $name = (string) $name;
         $name = $this->normalizeParameterName($name);
 
         return isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters);
@@ -149,7 +151,7 @@ private function normalizeParameterName($name)
         if (isset($this->normalizedParameterNames[$normalizedName = strtolower($name)]) || isset($this->parameters[$normalizedName]) || array_key_exists($normalizedName, $this->parameters)) {
             $normalizedName = isset($this->normalizedParameterNames[$normalizedName]) ? $this->normalizedParameterNames[$normalizedName] : $normalizedName;
             if ((string) $name !== $normalizedName) {
-                @trigger_error(sprintf('Parameter names will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since version 3.4.', $name, $normalizedName), E_USER_DEPRECATED);
+                @trigger_error(sprintf('Parameter names will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since Symfony 3.4.', $name, $normalizedName), E_USER_DEPRECATED);
             }
         } else {
             $normalizedName = $this->normalizedParameterNames[$normalizedName] = (string) $name;
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_base64_env.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_base64_env.php
index d796c0dae676..f1b92397ddbc 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_base64_env.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_base64_env.php
@@ -48,13 +48,14 @@ public function isCompiled()
 
     public function isFrozen()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         return true;
     }
 
     public function getParameter($name)
     {
+        $name = (string) $name;
         if (!(isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters))) {
             $name = $this->normalizeParameterName($name);
 
@@ -71,6 +72,7 @@ public function getParameter($name)
 
     public function hasParameter($name)
     {
+        $name = (string) $name;
         $name = $this->normalizeParameterName($name);
 
         return isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters);
@@ -126,7 +128,7 @@ private function normalizeParameterName($name)
         if (isset($this->normalizedParameterNames[$normalizedName = strtolower($name)]) || isset($this->parameters[$normalizedName]) || array_key_exists($normalizedName, $this->parameters)) {
             $normalizedName = isset($this->normalizedParameterNames[$normalizedName]) ? $this->normalizedParameterNames[$normalizedName] : $normalizedName;
             if ((string) $name !== $normalizedName) {
-                @trigger_error(sprintf('Parameter names will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since version 3.4.', $name, $normalizedName), E_USER_DEPRECATED);
+                @trigger_error(sprintf('Parameter names will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since Symfony 3.4.', $name, $normalizedName), E_USER_DEPRECATED);
             }
         } else {
             $normalizedName = $this->normalizedParameterNames[$normalizedName] = (string) $name;
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_env_in_id.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_env_in_id.php
index 7649ccd4572e..6bc714a204c9 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_env_in_id.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_env_in_id.php
@@ -61,7 +61,7 @@ public function isCompiled()
 
     public function isFrozen()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         return true;
     }
@@ -98,6 +98,7 @@ protected function getBarenvBARService()
 
     public function getParameter($name)
     {
+        $name = (string) $name;
         if (!(isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters))) {
             $name = $this->normalizeParameterName($name);
 
@@ -114,6 +115,7 @@ public function getParameter($name)
 
     public function hasParameter($name)
     {
+        $name = (string) $name;
         $name = $this->normalizeParameterName($name);
 
         return isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters);
@@ -163,7 +165,7 @@ private function normalizeParameterName($name)
         if (isset($this->normalizedParameterNames[$normalizedName = strtolower($name)]) || isset($this->parameters[$normalizedName]) || array_key_exists($normalizedName, $this->parameters)) {
             $normalizedName = isset($this->normalizedParameterNames[$normalizedName]) ? $this->normalizedParameterNames[$normalizedName] : $normalizedName;
             if ((string) $name !== $normalizedName) {
-                @trigger_error(sprintf('Parameter names will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since version 3.4.', $name, $normalizedName), E_USER_DEPRECATED);
+                @trigger_error(sprintf('Parameter names will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since Symfony 3.4.', $name, $normalizedName), E_USER_DEPRECATED);
             }
         } else {
             $normalizedName = $this->normalizedParameterNames[$normalizedName] = (string) $name;
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_requires.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_requires.php
index 2012c952c997..98280b749ad0 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_requires.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_requires.php
@@ -73,7 +73,7 @@ public function isCompiled()
 
     public function isFrozen()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         return true;
     }
@@ -125,6 +125,7 @@ protected function getC3Service()
 
     public function getParameter($name)
     {
+        $name = (string) $name;
         if (!(isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters))) {
             $name = $this->normalizeParameterName($name);
 
@@ -141,6 +142,7 @@ public function getParameter($name)
 
     public function hasParameter($name)
     {
+        $name = (string) $name;
         $name = $this->normalizeParameterName($name);
 
         return isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters);
@@ -188,7 +190,7 @@ private function normalizeParameterName($name)
         if (isset($this->normalizedParameterNames[$normalizedName = strtolower($name)]) || isset($this->parameters[$normalizedName]) || array_key_exists($normalizedName, $this->parameters)) {
             $normalizedName = isset($this->normalizedParameterNames[$normalizedName]) ? $this->normalizedParameterNames[$normalizedName] : $normalizedName;
             if ((string) $name !== $normalizedName) {
-                @trigger_error(sprintf('Parameter names will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since version 3.4.', $name, $normalizedName), E_USER_DEPRECATED);
+                @trigger_error(sprintf('Parameter names will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since Symfony 3.4.', $name, $normalizedName), E_USER_DEPRECATED);
             }
         } else {
             $normalizedName = $this->normalizedParameterNames[$normalizedName] = (string) $name;
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_legacy_privates.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_legacy_privates.php
index 1a9c87286d6e..7aa1bff87069 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_legacy_privates.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_legacy_privates.php
@@ -86,7 +86,7 @@ public function isCompiled()
 
     public function isFrozen()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         return true;
     }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_locator.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_locator.php
index 2ea323954fa5..496f6aa77d30 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_locator.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_locator.php
@@ -64,7 +64,7 @@ public function isCompiled()
 
     public function isFrozen()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         return true;
     }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_frozen.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_frozen.php
index 7d1c429826a9..1275e9f2642a 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_frozen.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_frozen.php
@@ -55,7 +55,7 @@ public function isCompiled()
 
     public function isFrozen()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         return true;
     }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_in_expression.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_in_expression.php
index abf7271f48a5..fe84f49753c5 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_in_expression.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_private_in_expression.php
@@ -55,7 +55,7 @@ public function isCompiled()
 
     public function isFrozen()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         return true;
     }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_rot13_env.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_rot13_env.php
index d888187bf534..aab87ec7af9f 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_rot13_env.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_rot13_env.php
@@ -55,7 +55,7 @@ public function isCompiled()
 
     public function isFrozen()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         return true;
     }
@@ -84,6 +84,7 @@ protected function getContainer_EnvVarProcessorsLocatorService()
 
     public function getParameter($name)
     {
+        $name = (string) $name;
         if (!(isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters))) {
             $name = $this->normalizeParameterName($name);
 
@@ -100,6 +101,7 @@ public function getParameter($name)
 
     public function hasParameter($name)
     {
+        $name = (string) $name;
         $name = $this->normalizeParameterName($name);
 
         return isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters);
@@ -155,7 +157,7 @@ private function normalizeParameterName($name)
         if (isset($this->normalizedParameterNames[$normalizedName = strtolower($name)]) || isset($this->parameters[$normalizedName]) || array_key_exists($normalizedName, $this->parameters)) {
             $normalizedName = isset($this->normalizedParameterNames[$normalizedName]) ? $this->normalizedParameterNames[$normalizedName] : $normalizedName;
             if ((string) $name !== $normalizedName) {
-                @trigger_error(sprintf('Parameter names will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since version 3.4.', $name, $normalizedName), E_USER_DEPRECATED);
+                @trigger_error(sprintf('Parameter names will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since Symfony 3.4.', $name, $normalizedName), E_USER_DEPRECATED);
             }
         } else {
             $normalizedName = $this->normalizedParameterNames[$normalizedName] = (string) $name;
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_subscriber.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_subscriber.php
index f682e9752ca6..9475c923068f 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_subscriber.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_subscriber.php
@@ -61,7 +61,7 @@ public function isCompiled()
 
     public function isFrozen()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         return true;
     }
@@ -83,7 +83,7 @@ protected function getTestServiceSubscriberService()
      */
     protected function getFooServiceService()
     {
-        return $this->services['foo_service'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber(\call_user_func(array(new \Symfony\Component\DependencyInjection\ServiceLocator(array('Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\CustomDefinition' => function () {
+        return $this->services['foo_service'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber((new \Symfony\Component\DependencyInjection\ServiceLocator(array('Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\CustomDefinition' => function () {
             $f = function (\Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition $v = null) { return $v; }; return $f(${($_ = isset($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition']) ? $this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition'] : $this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition()) && false ?: '_'});
         }, 'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\TestServiceSubscriber' => function () {
             $f = function (\Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber $v) { return $v; }; return $f(${($_ = isset($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber']) ? $this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber'] : $this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber()) && false ?: '_'});
@@ -91,7 +91,7 @@ protected function getFooServiceService()
             $f = function (\Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition $v) { return $v; }; return $f(${($_ = isset($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber']) ? $this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber'] : $this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber()) && false ?: '_'});
         }, 'baz' => function () {
             $f = function (\Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition $v = null) { return $v; }; return $f(${($_ = isset($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition']) ? $this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition'] : $this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition()) && false ?: '_'});
-        })), 'withContext'), 'foo_service', $this));
+        })))->withContext('foo_service', $this));
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_uninitialized_ref.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_uninitialized_ref.php
index 832530bd7d29..4d0c00b28913 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_uninitialized_ref.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_uninitialized_ref.php
@@ -57,7 +57,7 @@ public function isCompiled()
 
     public function isFrozen()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         return true;
     }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/ParameterBagTest.php b/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/ParameterBagTest.php
index 3bac9ca64e20..c139f0a13447 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/ParameterBagTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/ParameterBagTest.php
@@ -108,10 +108,10 @@ public function testHas()
 
     /**
      * @group legacy
-     * @expectedDeprecation Parameter names will be made case sensitive in Symfony 4.0. Using "BAR" instead of "bar" is deprecated since version 3.4.
-     * @expectedDeprecation Parameter names will be made case sensitive in Symfony 4.0. Using "Foo" instead of "foo" is deprecated since version 3.4.
-     * @expectedDeprecation Parameter names will be made case sensitive in Symfony 4.0. Using "FOO" instead of "foo" is deprecated since version 3.4.
-     * @expectedDeprecation Parameter names will be made case sensitive in Symfony 4.0. Using "Foo" instead of "foo" is deprecated since version 3.4.
+     * @expectedDeprecation Parameter names will be made case sensitive in Symfony 4.0. Using "BAR" instead of "bar" is deprecated since Symfony 3.4.
+     * @expectedDeprecation Parameter names will be made case sensitive in Symfony 4.0. Using "Foo" instead of "foo" is deprecated since Symfony 3.4.
+     * @expectedDeprecation Parameter names will be made case sensitive in Symfony 4.0. Using "FOO" instead of "foo" is deprecated since Symfony 3.4.
+     * @expectedDeprecation Parameter names will be made case sensitive in Symfony 4.0. Using "Foo" instead of "foo" is deprecated since Symfony 3.4.
      */
     public function testMixedCase()
     {
diff --git a/src/Symfony/Component/DomCrawler/Crawler.php b/src/Symfony/Component/DomCrawler/Crawler.php
index ac75ee3d3d1a..d96b4bb1d5ad 100644
--- a/src/Symfony/Component/DomCrawler/Crawler.php
+++ b/src/Symfony/Component/DomCrawler/Crawler.php
@@ -691,8 +691,8 @@ public function filterXPath($xpath)
      */
     public function filter($selector)
     {
-        if (!class_exists('Symfony\\Component\\CssSelector\\CssSelectorConverter')) {
-            throw new \RuntimeException('Unable to filter with a CSS selector as the Symfony CssSelector 2.8+ is not installed (you can use filterXPath instead).');
+        if (!class_exists(CssSelectorConverter::class)) {
+            throw new \RuntimeException('To filter with a CSS selector, install the CssSelector component ("composer require symfony/css-selector"). Or use filterXpath instead.');
         }
 
         $converter = new CssSelectorConverter($this->isHtml);
diff --git a/src/Symfony/Component/DomCrawler/LICENSE b/src/Symfony/Component/DomCrawler/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/DomCrawler/LICENSE
+++ b/src/Symfony/Component/DomCrawler/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Dotenv/LICENSE b/src/Symfony/Component/Dotenv/LICENSE
index ce39894f6a9a..fcd3fa76970f 100644
--- a/src/Symfony/Component/Dotenv/LICENSE
+++ b/src/Symfony/Component/Dotenv/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2016-2017 Fabien Potencier
+Copyright (c) 2016-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/EventDispatcher/ContainerAwareEventDispatcher.php b/src/Symfony/Component/EventDispatcher/ContainerAwareEventDispatcher.php
index 7a2b68be2288..81a1ff7caf7b 100644
--- a/src/Symfony/Component/EventDispatcher/ContainerAwareEventDispatcher.php
+++ b/src/Symfony/Component/EventDispatcher/ContainerAwareEventDispatcher.php
@@ -46,7 +46,7 @@ public function __construct(ContainerInterface $container)
             $class = get_parent_class($class);
         }
         if (__CLASS__ !== $class) {
-            @trigger_error(sprintf('The %s class is deprecated since version 3.3 and will be removed in 4.0. Use EventDispatcher with closure factories instead.', __CLASS__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('The %s class is deprecated since Symfony 3.3 and will be removed in 4.0. Use EventDispatcher with closure factories instead.', __CLASS__), E_USER_DEPRECATED);
         }
     }
 
@@ -64,7 +64,7 @@ public function __construct(ContainerInterface $container)
      */
     public function addListenerService($eventName, $callback, $priority = 0)
     {
-        @trigger_error(sprintf('The %s class is deprecated since version 3.3 and will be removed in 4.0. Use EventDispatcher with closure factories instead.', __CLASS__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s class is deprecated since Symfony 3.3 and will be removed in 4.0. Use EventDispatcher with closure factories instead.', __CLASS__), E_USER_DEPRECATED);
 
         if (!is_array($callback) || 2 !== count($callback)) {
             throw new \InvalidArgumentException('Expected an array("service", "method") argument');
@@ -146,7 +146,7 @@ public function getListenerPriority($eventName, $listener)
      */
     public function addSubscriberService($serviceId, $class)
     {
-        @trigger_error(sprintf('The %s class is deprecated since version 3.3 and will be removed in 4.0. Use EventDispatcher with closure factories instead.', __CLASS__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s class is deprecated since Symfony 3.3 and will be removed in 4.0. Use EventDispatcher with closure factories instead.', __CLASS__), E_USER_DEPRECATED);
 
         foreach ($class::getSubscribedEvents() as $eventName => $params) {
             if (is_string($params)) {
@@ -163,7 +163,7 @@ public function addSubscriberService($serviceId, $class)
 
     public function getContainer()
     {
-        @trigger_error('The '.__METHOD__.'() method is deprecated since version 3.3 as its class will be removed in 4.0. Inject the container or the services you need in your listeners/subscribers instead.', E_USER_DEPRECATED);
+        @trigger_error('The '.__METHOD__.'() method is deprecated since Symfony 3.3 as its class will be removed in 4.0. Inject the container or the services you need in your listeners/subscribers instead.', E_USER_DEPRECATED);
 
         return $this->container;
     }
diff --git a/src/Symfony/Component/EventDispatcher/LICENSE b/src/Symfony/Component/EventDispatcher/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/EventDispatcher/LICENSE
+++ b/src/Symfony/Component/EventDispatcher/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/ExpressionLanguage/LICENSE b/src/Symfony/Component/ExpressionLanguage/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/ExpressionLanguage/LICENSE
+++ b/src/Symfony/Component/ExpressionLanguage/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/ExpressionLanguage/ParserCache/ArrayParserCache.php b/src/Symfony/Component/ExpressionLanguage/ParserCache/ArrayParserCache.php
index c6de77681d1c..124962505dfb 100644
--- a/src/Symfony/Component/ExpressionLanguage/ParserCache/ArrayParserCache.php
+++ b/src/Symfony/Component/ExpressionLanguage/ParserCache/ArrayParserCache.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\ExpressionLanguage\ParserCache;
 
-@trigger_error('The '.__NAMESPACE__.'\ArrayParserCache class is deprecated since version 3.2 and will be removed in 4.0. Use the Symfony\Component\Cache\Adapter\ArrayAdapter class instead.', E_USER_DEPRECATED);
+@trigger_error('The '.__NAMESPACE__.'\ArrayParserCache class is deprecated since Symfony 3.2 and will be removed in 4.0. Use the Symfony\Component\Cache\Adapter\ArrayAdapter class instead.', E_USER_DEPRECATED);
 
 use Symfony\Component\ExpressionLanguage\ParsedExpression;
 
diff --git a/src/Symfony/Component/ExpressionLanguage/ParserCache/ParserCacheInterface.php b/src/Symfony/Component/ExpressionLanguage/ParserCache/ParserCacheInterface.php
index 1e10cb419a48..ed66b21bf2f4 100644
--- a/src/Symfony/Component/ExpressionLanguage/ParserCache/ParserCacheInterface.php
+++ b/src/Symfony/Component/ExpressionLanguage/ParserCache/ParserCacheInterface.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\ExpressionLanguage\ParserCache;
 
-@trigger_error('The '.__NAMESPACE__.'\ParserCacheInterface interface is deprecated since version 3.2 and will be removed in 4.0. Use Psr\Cache\CacheItemPoolInterface instead.', E_USER_DEPRECATED);
+@trigger_error('The '.__NAMESPACE__.'\ParserCacheInterface interface is deprecated since Symfony 3.2 and will be removed in 4.0. Use Psr\Cache\CacheItemPoolInterface instead.', E_USER_DEPRECATED);
 
 use Symfony\Component\ExpressionLanguage\ParsedExpression;
 
diff --git a/src/Symfony/Component/Filesystem/Filesystem.php b/src/Symfony/Component/Filesystem/Filesystem.php
index 0376ff73c091..554bf22694e5 100644
--- a/src/Symfony/Component/Filesystem/Filesystem.php
+++ b/src/Symfony/Component/Filesystem/Filesystem.php
@@ -451,7 +451,7 @@ public function readlink($path, $canonicalize = false)
     public function makePathRelative($endPath, $startPath)
     {
         if (!$this->isAbsolutePath($endPath) || !$this->isAbsolutePath($startPath)) {
-            @trigger_error(sprintf('Support for passing relative paths to %s() is deprecated since version 3.4 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Support for passing relative paths to %s() is deprecated since Symfony 3.4 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
         }
 
         // Normalize separators on Windows
diff --git a/src/Symfony/Component/Filesystem/LICENSE b/src/Symfony/Component/Filesystem/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/Filesystem/LICENSE
+++ b/src/Symfony/Component/Filesystem/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Filesystem/LockHandler.php b/src/Symfony/Component/Filesystem/LockHandler.php
index 6e5dfdd506af..a2e7ad5c336a 100644
--- a/src/Symfony/Component/Filesystem/LockHandler.php
+++ b/src/Symfony/Component/Filesystem/LockHandler.php
@@ -15,7 +15,7 @@
 use Symfony\Component\Lock\Store\FlockStore;
 use Symfony\Component\Lock\Store\SemaphoreStore;
 
-@trigger_error(sprintf('The %s class is deprecated since version 3.4 and will be removed in 4.0. Use %s or %s instead.', LockHandler::class, SemaphoreStore::class, FlockStore::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The %s class is deprecated since Symfony 3.4 and will be removed in 4.0. Use %s or %s instead.', LockHandler::class, SemaphoreStore::class, FlockStore::class), E_USER_DEPRECATED);
 
 /**
  * LockHandler class provides a simple abstraction to lock anything by means of
diff --git a/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php b/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
index 1d3009295665..5898fc257b09 100644
--- a/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
+++ b/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
@@ -1144,7 +1144,7 @@ public function providePathsForMakePathRelative()
     /**
      * @group legacy
      * @dataProvider provideLegacyPathsForMakePathRelativeWithRelativePaths
-     * @expectedDeprecation Support for passing relative paths to Symfony\Component\Filesystem\Filesystem::makePathRelative() is deprecated since version 3.4 and will be removed in 4.0.
+     * @expectedDeprecation Support for passing relative paths to Symfony\Component\Filesystem\Filesystem::makePathRelative() is deprecated since Symfony 3.4 and will be removed in 4.0.
      */
     public function testMakePathRelativeWithRelativePaths($endPath, $startPath, $expectedPath)
     {
@@ -1539,7 +1539,7 @@ public function testAppendToFile()
 
         // skip mode check on Windows
         if ('\\' !== DIRECTORY_SEPARATOR) {
-            $this->assertFilePermissions(664, $filename, 'The written file should keep the same permissions as before.');
+            $this->assertFilePermissions(664, $filename);
             umask($oldMask);
         }
     }
diff --git a/src/Symfony/Component/Finder/LICENSE b/src/Symfony/Component/Finder/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/Finder/LICENSE
+++ b/src/Symfony/Component/Finder/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Form/ChoiceList/Factory/PropertyAccessDecorator.php b/src/Symfony/Component/Form/ChoiceList/Factory/PropertyAccessDecorator.php
index 8bed7ca8349a..d8a007c90b83 100644
--- a/src/Symfony/Component/Form/ChoiceList/Factory/PropertyAccessDecorator.php
+++ b/src/Symfony/Component/Form/ChoiceList/Factory/PropertyAccessDecorator.php
@@ -74,7 +74,7 @@ public function createListFromChoices($choices, $value = null)
         if (is_string($value) && !is_callable($value)) {
             $value = new PropertyPath($value);
         } elseif (is_string($value) && is_callable($value)) {
-            @trigger_error('Passing callable strings is deprecated since version 3.1 and PropertyAccessDecorator will treat them as property paths in 4.0. You should use a "\Closure" instead.', E_USER_DEPRECATED);
+            @trigger_error('Passing callable strings is deprecated since Symfony 3.1 and PropertyAccessDecorator will treat them as property paths in 4.0. You should use a "\Closure" instead.', E_USER_DEPRECATED);
         }
 
         if ($value instanceof PropertyPath) {
@@ -107,7 +107,7 @@ public function createListFromLoader(ChoiceLoaderInterface $loader, $value = nul
         if (is_string($value) && !is_callable($value)) {
             $value = new PropertyPath($value);
         } elseif (is_string($value) && is_callable($value)) {
-            @trigger_error('Passing callable strings is deprecated since version 3.1 and PropertyAccessDecorator will treat them as property paths in 4.0. You should use a "\Closure" instead.', E_USER_DEPRECATED);
+            @trigger_error('Passing callable strings is deprecated since Symfony 3.1 and PropertyAccessDecorator will treat them as property paths in 4.0. You should use a "\Closure" instead.', E_USER_DEPRECATED);
         }
 
         if ($value instanceof PropertyPath) {
@@ -145,7 +145,7 @@ public function createView(ChoiceListInterface $list, $preferredChoices = null,
         if (is_string($label) && !is_callable($label)) {
             $label = new PropertyPath($label);
         } elseif (is_string($label) && is_callable($label)) {
-            @trigger_error('Passing callable strings is deprecated since version 3.1 and PropertyAccessDecorator will treat them as property paths in 4.0. You should use a "\Closure" instead.', E_USER_DEPRECATED);
+            @trigger_error('Passing callable strings is deprecated since Symfony 3.1 and PropertyAccessDecorator will treat them as property paths in 4.0. You should use a "\Closure" instead.', E_USER_DEPRECATED);
         }
 
         if ($label instanceof PropertyPath) {
@@ -157,7 +157,7 @@ public function createView(ChoiceListInterface $list, $preferredChoices = null,
         if (is_string($preferredChoices) && !is_callable($preferredChoices)) {
             $preferredChoices = new PropertyPath($preferredChoices);
         } elseif (is_string($preferredChoices) && is_callable($preferredChoices)) {
-            @trigger_error('Passing callable strings is deprecated since version 3.1 and PropertyAccessDecorator will treat them as property paths in 4.0. You should use a "\Closure" instead.', E_USER_DEPRECATED);
+            @trigger_error('Passing callable strings is deprecated since Symfony 3.1 and PropertyAccessDecorator will treat them as property paths in 4.0. You should use a "\Closure" instead.', E_USER_DEPRECATED);
         }
 
         if ($preferredChoices instanceof PropertyPath) {
@@ -174,7 +174,7 @@ public function createView(ChoiceListInterface $list, $preferredChoices = null,
         if (is_string($index) && !is_callable($index)) {
             $index = new PropertyPath($index);
         } elseif (is_string($index) && is_callable($index)) {
-            @trigger_error('Passing callable strings is deprecated since version 3.1 and PropertyAccessDecorator will treat them as property paths in 4.0. You should use a "\Closure" instead.', E_USER_DEPRECATED);
+            @trigger_error('Passing callable strings is deprecated since Symfony 3.1 and PropertyAccessDecorator will treat them as property paths in 4.0. You should use a "\Closure" instead.', E_USER_DEPRECATED);
         }
 
         if ($index instanceof PropertyPath) {
@@ -186,7 +186,7 @@ public function createView(ChoiceListInterface $list, $preferredChoices = null,
         if (is_string($groupBy) && !is_callable($groupBy)) {
             $groupBy = new PropertyPath($groupBy);
         } elseif (is_string($groupBy) && is_callable($groupBy)) {
-            @trigger_error('Passing callable strings is deprecated since version 3.1 and PropertyAccessDecorator will treat them as property paths in 4.0. You should use a "\Closure" instead.', E_USER_DEPRECATED);
+            @trigger_error('Passing callable strings is deprecated since Symfony 3.1 and PropertyAccessDecorator will treat them as property paths in 4.0. You should use a "\Closure" instead.', E_USER_DEPRECATED);
         }
 
         if ($groupBy instanceof PropertyPath) {
@@ -202,7 +202,7 @@ public function createView(ChoiceListInterface $list, $preferredChoices = null,
         if (is_string($attr) && !is_callable($attr)) {
             $attr = new PropertyPath($attr);
         } elseif (is_string($attr) && is_callable($attr)) {
-            @trigger_error('Passing callable strings is deprecated since version 3.1 and PropertyAccessDecorator will treat them as property paths in 4.0. You should use a "\Closure" instead.', E_USER_DEPRECATED);
+            @trigger_error('Passing callable strings is deprecated since Symfony 3.1 and PropertyAccessDecorator will treat them as property paths in 4.0. You should use a "\Closure" instead.', E_USER_DEPRECATED);
         }
 
         if ($attr instanceof PropertyPath) {
diff --git a/src/Symfony/Component/Form/ChoiceList/LazyChoiceList.php b/src/Symfony/Component/Form/ChoiceList/LazyChoiceList.php
index 17179cec88b9..486dce58ec7c 100644
--- a/src/Symfony/Component/Form/ChoiceList/LazyChoiceList.php
+++ b/src/Symfony/Component/Form/ChoiceList/LazyChoiceList.php
@@ -77,7 +77,7 @@ public function getChoices()
             // We can safely invoke the {@link ChoiceLoaderInterface} assuming it has the list
             // in cache when the lazy list is already loaded
             if ($this->loadedList !== $this->loader->loadChoiceList($this->value)) {
-                @trigger_error(sprintf('Caching the choice list in %s is deprecated since 3.1 and will not happen in 4.0. Cache the list in the %s instead.', __CLASS__, ChoiceLoaderInterface::class), E_USER_DEPRECATED);
+                @trigger_error(sprintf('Caching the choice list in %s is deprecated since Symfony 3.1 and will not happen in 4.0. Cache the list in the %s instead.', __CLASS__, ChoiceLoaderInterface::class), E_USER_DEPRECATED);
             }
 
             return $this->loadedList->getChoices();
@@ -100,7 +100,7 @@ public function getValues()
         if ($this->loaded) {
             // Check whether the loader has the same cache
             if ($this->loadedList !== $this->loader->loadChoiceList($this->value)) {
-                @trigger_error(sprintf('Caching the choice list in %s is deprecated since 3.1 and will not happen in 4.0. Cache the list in the %s instead.', __CLASS__, ChoiceLoaderInterface::class), E_USER_DEPRECATED);
+                @trigger_error(sprintf('Caching the choice list in %s is deprecated since Symfony 3.1 and will not happen in 4.0. Cache the list in the %s instead.', __CLASS__, ChoiceLoaderInterface::class), E_USER_DEPRECATED);
             }
 
             return $this->loadedList->getValues();
@@ -123,7 +123,7 @@ public function getStructuredValues()
         if ($this->loaded) {
             // Check whether the loader has the same cache
             if ($this->loadedList !== $this->loader->loadChoiceList($this->value)) {
-                @trigger_error(sprintf('Caching the choice list in %s is deprecated since 3.1 and will not happen in 4.0. Cache the list in the %s instead.', __CLASS__, ChoiceLoaderInterface::class), E_USER_DEPRECATED);
+                @trigger_error(sprintf('Caching the choice list in %s is deprecated since Symfony 3.1 and will not happen in 4.0. Cache the list in the %s instead.', __CLASS__, ChoiceLoaderInterface::class), E_USER_DEPRECATED);
             }
 
             return $this->loadedList->getStructuredValues();
@@ -146,7 +146,7 @@ public function getOriginalKeys()
         if ($this->loaded) {
             // Check whether the loader has the same cache
             if ($this->loadedList !== $this->loader->loadChoiceList($this->value)) {
-                @trigger_error(sprintf('Caching the choice list in %s is deprecated since 3.1 and will not happen in 4.0. Cache the list in the %s instead.', __CLASS__, ChoiceLoaderInterface::class), E_USER_DEPRECATED);
+                @trigger_error(sprintf('Caching the choice list in %s is deprecated since Symfony 3.1 and will not happen in 4.0. Cache the list in the %s instead.', __CLASS__, ChoiceLoaderInterface::class), E_USER_DEPRECATED);
             }
 
             return $this->loadedList->getOriginalKeys();
@@ -169,7 +169,7 @@ public function getChoicesForValues(array $values)
         if ($this->loaded) {
             // Check whether the loader has the same cache
             if ($this->loadedList !== $this->loader->loadChoiceList($this->value)) {
-                @trigger_error(sprintf('Caching the choice list in %s is deprecated since 3.1 and will not happen in 4.0. Cache the list in the %s instead.', __CLASS__, ChoiceLoaderInterface::class), E_USER_DEPRECATED);
+                @trigger_error(sprintf('Caching the choice list in %s is deprecated since Symfony 3.1 and will not happen in 4.0. Cache the list in the %s instead.', __CLASS__, ChoiceLoaderInterface::class), E_USER_DEPRECATED);
             }
 
             return $this->loadedList->getChoicesForValues($values);
@@ -186,7 +186,7 @@ public function getValuesForChoices(array $choices)
         if ($this->loaded) {
             // Check whether the loader has the same cache
             if ($this->loadedList !== $this->loader->loadChoiceList($this->value)) {
-                @trigger_error(sprintf('Caching the choice list in %s is deprecated since 3.1 and will not happen in 4.0. Cache the list in the %s instead.', __CLASS__, ChoiceLoaderInterface::class), E_USER_DEPRECATED);
+                @trigger_error(sprintf('Caching the choice list in %s is deprecated since Symfony 3.1 and will not happen in 4.0. Cache the list in the %s instead.', __CLASS__, ChoiceLoaderInterface::class), E_USER_DEPRECATED);
             }
 
             return $this->loadedList->getValuesForChoices($choices);
diff --git a/src/Symfony/Component/Form/Console/Descriptor/Descriptor.php b/src/Symfony/Component/Form/Console/Descriptor/Descriptor.php
index 6cccd8ead235..fbdb19aff60f 100644
--- a/src/Symfony/Component/Form/Console/Descriptor/Descriptor.php
+++ b/src/Symfony/Component/Form/Console/Descriptor/Descriptor.php
@@ -98,6 +98,8 @@ protected function collectOptions(ResolvedFormTypeInterface $type)
         }
 
         $this->overriddenOptions = array_filter($this->overriddenOptions);
+        $this->parentOptions = array_filter($this->parentOptions);
+        $this->extensionOptions = array_filter($this->extensionOptions);
         $this->requiredOptions = $optionsResolver->getRequiredOptions();
 
         $this->parents = array_keys($this->parents);
diff --git a/src/Symfony/Component/Form/Console/Descriptor/TextDescriptor.php b/src/Symfony/Component/Form/Console/Descriptor/TextDescriptor.php
index 6e17e9b859e0..d899ffce4e2a 100644
--- a/src/Symfony/Component/Form/Console/Descriptor/TextDescriptor.php
+++ b/src/Symfony/Component/Form/Console/Descriptor/TextDescriptor.php
@@ -126,30 +126,32 @@ protected function describeOption(OptionsResolver $optionsResolver, array $optio
 
     private function normalizeAndSortOptionsColumns(array $options)
     {
-        foreach ($options as $group => &$opts) {
+        foreach ($options as $group => $opts) {
             $sorted = false;
             foreach ($opts as $class => $opt) {
+                if (is_string($class)) {
+                    unset($options[$group][$class]);
+                }
+
                 if (!is_array($opt) || 0 === count($opt)) {
                     continue;
                 }
 
-                unset($opts[$class]);
-
                 if (!$sorted) {
-                    $opts = array();
+                    $options[$group] = array();
                 } else {
-                    $opts[] = null;
+                    $options[$group][] = null;
                 }
-                $opts[] = sprintf('<info>%s</info>', (new \ReflectionClass($class))->getShortName());
-                $opts[] = new TableSeparator();
+                $options[$group][] = sprintf('<info>%s</info>', (new \ReflectionClass($class))->getShortName());
+                $options[$group][] = new TableSeparator();
 
                 sort($opt);
                 $sorted = true;
-                $opts = array_merge($opts, $opt);
+                $options[$group] = array_merge($options[$group], $opt);
             }
 
             if (!$sorted) {
-                sort($opts);
+                sort($options[$group]);
             }
         }
 
diff --git a/src/Symfony/Component/Form/Extension/Core/EventListener/ResizeFormListener.php b/src/Symfony/Component/Form/Extension/Core/EventListener/ResizeFormListener.php
index 53614ed515af..33b1bdb85236 100644
--- a/src/Symfony/Component/Form/Extension/Core/EventListener/ResizeFormListener.php
+++ b/src/Symfony/Component/Form/Extension/Core/EventListener/ResizeFormListener.php
@@ -89,7 +89,7 @@ public function preSubmit(FormEvent $event)
         $data = $event->getData();
 
         if ($data instanceof \Traversable && $data instanceof \ArrayAccess) {
-            @trigger_error('Support for objects implementing both \Traversable and \ArrayAccess is deprecated since version 3.1 and will be removed in 4.0. Use an array instead.', E_USER_DEPRECATED);
+            @trigger_error('Support for objects implementing both \Traversable and \ArrayAccess is deprecated since Symfony 3.1 and will be removed in 4.0. Use an array instead.', E_USER_DEPRECATED);
         }
 
         if (!is_array($data) && !($data instanceof \Traversable && $data instanceof \ArrayAccess)) {
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/ChoiceType.php b/src/Symfony/Component/Form/Extension/Core/Type/ChoiceType.php
index 43f597693857..e1b4ae40fed8 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/ChoiceType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/ChoiceType.php
@@ -280,7 +280,7 @@ public function configureOptions(OptionsResolver $resolver)
                 throw new \RuntimeException(sprintf('The "choices_as_values" option of the %s should not be used. Remove it and flip the contents of the "choices" option instead.', get_class($this)));
             }
 
-            @trigger_error('The "choices_as_values" option is deprecated since version 3.1 and will be removed in 4.0. You should not use it anymore.', E_USER_DEPRECATED);
+            @trigger_error('The "choices_as_values" option is deprecated since Symfony 3.1 and will be removed in 4.0. You should not use it anymore.', E_USER_DEPRECATED);
 
             return true;
         };
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/CountryType.php b/src/Symfony/Component/Form/Extension/Core/Type/CountryType.php
index 02e8e09cdc82..5032ef4b761d 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/CountryType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/CountryType.php
@@ -39,7 +39,7 @@ public function configureOptions(OptionsResolver $resolver)
         $resolver->setDefaults(array(
             'choice_loader' => function (Options $options) {
                 if ($options['choices']) {
-                    @trigger_error(sprintf('Using the "choices" option in %s has been deprecated since version 3.3 and will be ignored in 4.0. Override the "choice_loader" option instead or set it to null.', __CLASS__), E_USER_DEPRECATED);
+                    @trigger_error(sprintf('Using the "choices" option in %s has been deprecated since Symfony 3.3 and will be ignored in 4.0. Override the "choice_loader" option instead or set it to null.', __CLASS__), E_USER_DEPRECATED);
 
                     return null;
                 }
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/CurrencyType.php b/src/Symfony/Component/Form/Extension/Core/Type/CurrencyType.php
index 990235c10a99..e4fd0622a4ef 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/CurrencyType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/CurrencyType.php
@@ -39,7 +39,7 @@ public function configureOptions(OptionsResolver $resolver)
         $resolver->setDefaults(array(
             'choice_loader' => function (Options $options) {
                 if ($options['choices']) {
-                    @trigger_error(sprintf('Using the "choices" option in %s has been deprecated since version 3.3 and will be ignored in 4.0. Override the "choice_loader" option instead or set it to null.', __CLASS__), E_USER_DEPRECATED);
+                    @trigger_error(sprintf('Using the "choices" option in %s has been deprecated since Symfony 3.3 and will be ignored in 4.0. Override the "choice_loader" option instead or set it to null.', __CLASS__), E_USER_DEPRECATED);
 
                     return null;
                 }
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/LanguageType.php b/src/Symfony/Component/Form/Extension/Core/Type/LanguageType.php
index 2137c65a9e44..04f25a62f206 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/LanguageType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/LanguageType.php
@@ -39,7 +39,7 @@ public function configureOptions(OptionsResolver $resolver)
         $resolver->setDefaults(array(
             'choice_loader' => function (Options $options) {
                 if ($options['choices']) {
-                    @trigger_error(sprintf('Using the "choices" option in %s has been deprecated since version 3.3 and will be ignored in 4.0. Override the "choice_loader" option instead or set it to null.', __CLASS__), E_USER_DEPRECATED);
+                    @trigger_error(sprintf('Using the "choices" option in %s has been deprecated since Symfony 3.3 and will be ignored in 4.0. Override the "choice_loader" option instead or set it to null.', __CLASS__), E_USER_DEPRECATED);
 
                     return null;
                 }
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/LocaleType.php b/src/Symfony/Component/Form/Extension/Core/Type/LocaleType.php
index 38e62af060d9..2622e3222410 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/LocaleType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/LocaleType.php
@@ -39,7 +39,7 @@ public function configureOptions(OptionsResolver $resolver)
         $resolver->setDefaults(array(
             'choice_loader' => function (Options $options) {
                 if ($options['choices']) {
-                    @trigger_error(sprintf('Using the "choices" option in %s has been deprecated since version 3.3 and will be ignored in 4.0. Override the "choice_loader" option instead or set it to null.', __CLASS__), E_USER_DEPRECATED);
+                    @trigger_error(sprintf('Using the "choices" option in %s has been deprecated since Symfony 3.3 and will be ignored in 4.0. Override the "choice_loader" option instead or set it to null.', __CLASS__), E_USER_DEPRECATED);
 
                     return null;
                 }
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/TimezoneType.php b/src/Symfony/Component/Form/Extension/Core/Type/TimezoneType.php
index 0a0ea56ef9ea..a1c214c8bcd2 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/TimezoneType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/TimezoneType.php
@@ -51,7 +51,7 @@ public function configureOptions(OptionsResolver $resolver)
         $resolver->setDefaults(array(
             'choice_loader' => function (Options $options) {
                 if ($options['choices']) {
-                    @trigger_error(sprintf('Using the "choices" option in %s has been deprecated since version 3.3 and will be ignored in 4.0. Override the "choice_loader" option instead or set it to null.', __CLASS__), E_USER_DEPRECATED);
+                    @trigger_error(sprintf('Using the "choices" option in %s has been deprecated since Symfony 3.3 and will be ignored in 4.0. Override the "choice_loader" option instead or set it to null.', __CLASS__), E_USER_DEPRECATED);
 
                     return null;
                 }
@@ -95,7 +95,7 @@ public function getBlockPrefix()
      */
     public function loadChoiceList($value = null)
     {
-        @trigger_error(sprintf('Method "%s" is deprecated since version 3.4 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('Method "%s" is deprecated since Symfony 3.4 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
 
         if (null !== $this->choiceList) {
             return $this->choiceList;
@@ -111,7 +111,7 @@ public function loadChoiceList($value = null)
      */
     public function loadChoicesForValues(array $values, $value = null)
     {
-        @trigger_error(sprintf('Method "%s" is deprecated since version 3.4 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('Method "%s" is deprecated since Symfony 3.4 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
 
         // Optimize
         $values = array_filter($values);
@@ -134,7 +134,7 @@ public function loadChoicesForValues(array $values, $value = null)
      */
     public function loadValuesForChoices(array $choices, $value = null)
     {
-        @trigger_error(sprintf('Method "%s" is deprecated since version 3.4 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('Method "%s" is deprecated since Symfony 3.4 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
 
         // Optimize
         $choices = array_filter($choices);
diff --git a/src/Symfony/Component/Form/Form.php b/src/Symfony/Component/Form/Form.php
index d7734e3f4fe6..7f70567b30a1 100644
--- a/src/Symfony/Component/Form/Form.php
+++ b/src/Symfony/Component/Form/Form.php
@@ -734,7 +734,7 @@ public function isEmpty()
     public function isValid()
     {
         if (!$this->submitted) {
-            @trigger_error('Call Form::isValid() with an unsubmitted form is deprecated since version 3.2 and will throw an exception in 4.0. Use Form::isSubmitted() before Form::isValid() instead.', E_USER_DEPRECATED);
+            @trigger_error('Call Form::isValid() with an unsubmitted form is deprecated since Symfony 3.2 and will throw an exception in 4.0. Use Form::isSubmitted() before Form::isValid() instead.', E_USER_DEPRECATED);
 
             return false;
         }
diff --git a/src/Symfony/Component/Form/FormRegistry.php b/src/Symfony/Component/Form/FormRegistry.php
index 7d08d690dffb..6be83ab95de6 100644
--- a/src/Symfony/Component/Form/FormRegistry.php
+++ b/src/Symfony/Component/Form/FormRegistry.php
@@ -82,11 +82,14 @@ public function getType($name)
 
             if (!$type) {
                 // Support fully-qualified class names
-                if (class_exists($name) && in_array('Symfony\Component\Form\FormTypeInterface', class_implements($name))) {
-                    $type = new $name();
-                } else {
-                    throw new InvalidArgumentException(sprintf('Could not load type "%s"', $name));
+                if (!class_exists($name)) {
+                    throw new InvalidArgumentException(sprintf('Could not load type "%s": class does not exist.', $name));
                 }
+                if (!is_subclass_of($name, 'Symfony\Component\Form\FormTypeInterface')) {
+                    throw new InvalidArgumentException(sprintf('Could not load type "%s": class does not implement "Symfony\Component\Form\FormTypeInterface".', $name));
+                }
+
+                $type = new $name();
             }
 
             $this->types[$name] = $this->resolveType($type);
diff --git a/src/Symfony/Component/Form/LICENSE b/src/Symfony/Component/Form/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/Form/LICENSE
+++ b/src/Symfony/Component/Form/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Form/Tests/Console/Descriptor/AbstractDescriptorTest.php b/src/Symfony/Component/Form/Tests/Console/Descriptor/AbstractDescriptorTest.php
index 8849266527d8..c29e3fe2fc5e 100644
--- a/src/Symfony/Component/Form/Tests/Console/Descriptor/AbstractDescriptorTest.php
+++ b/src/Symfony/Component/Form/Tests/Console/Descriptor/AbstractDescriptorTest.php
@@ -84,6 +84,7 @@ public function getDescribeResolvedFormTypeTestData()
         $parent = new ResolvedFormType(new FormType(), $typeExtensions);
 
         yield array(new ResolvedFormType(new ChoiceType(), array(), $parent), array('decorated' => false), 'resolved_form_type_1');
+        yield array(new ResolvedFormType(new FormType()), array('decorated' => false), 'resolved_form_type_2');
     }
 
     public function getDescribeOptionTestData()
diff --git a/src/Symfony/Component/Form/Tests/Fixtures/Descriptor/resolved_form_type_2.json b/src/Symfony/Component/Form/Tests/Fixtures/Descriptor/resolved_form_type_2.json
new file mode 100644
index 000000000000..bdefb5c94662
--- /dev/null
+++ b/src/Symfony/Component/Form/Tests/Fixtures/Descriptor/resolved_form_type_2.json
@@ -0,0 +1,37 @@
+{
+    "class": "Symfony\\Component\\Form\\Extension\\Core\\Type\\FormType",
+    "block_prefix": "form",
+    "options": {
+        "own": [
+            "action",
+            "attr",
+            "auto_initialize",
+            "block_name",
+            "by_reference",
+            "compound",
+            "data",
+            "data_class",
+            "disabled",
+            "empty_data",
+            "error_bubbling",
+            "inherit_data",
+            "label",
+            "label_attr",
+            "label_format",
+            "mapped",
+            "method",
+            "post_max_size_message",
+            "property_path",
+            "required",
+            "translation_domain",
+            "trim",
+            "upload_max_size_message"
+        ],
+        "overridden": [],
+        "parent": [],
+        "extension": [],
+        "required": []
+    },
+    "parent_types": [],
+    "type_extensions": []
+}
diff --git a/src/Symfony/Component/Form/Tests/Fixtures/Descriptor/resolved_form_type_2.txt b/src/Symfony/Component/Form/Tests/Fixtures/Descriptor/resolved_form_type_2.txt
new file mode 100644
index 000000000000..72b13dfef75a
--- /dev/null
+++ b/src/Symfony/Component/Form/Tests/Fixtures/Descriptor/resolved_form_type_2.txt
@@ -0,0 +1,32 @@
+
+Symfony\Component\Form\Extension\Core\Type\FormType (Block prefix: "form")
+==========================================================================
+
+ ------------------------- 
+  Options                  
+ ------------------------- 
+  action                   
+  attr                     
+  auto_initialize          
+  block_name               
+  by_reference             
+  compound                 
+  data                     
+  data_class               
+  disabled                 
+  empty_data               
+  error_bubbling           
+  inherit_data             
+  label                    
+  label_attr               
+  label_format             
+  mapped                   
+  method                   
+  post_max_size_message    
+  property_path            
+  required                 
+  translation_domain       
+  trim                     
+  upload_max_size_message  
+ ------------------------- 
+
diff --git a/src/Symfony/Component/HttpFoundation/LICENSE b/src/Symfony/Component/HttpFoundation/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/HttpFoundation/LICENSE
+++ b/src/Symfony/Component/HttpFoundation/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/HttpFoundation/Request.php b/src/Symfony/Component/HttpFoundation/Request.php
index 98f414783f47..cf80681a6e97 100644
--- a/src/Symfony/Component/HttpFoundation/Request.php
+++ b/src/Symfony/Component/HttpFoundation/Request.php
@@ -587,7 +587,7 @@ public static function setTrustedProxies(array $proxies/*, int $trustedHeaderSet
         self::$trustedProxies = $proxies;
 
         if (2 > func_num_args()) {
-            @trigger_error(sprintf('The %s() method expects a bit field of Request::HEADER_* as second argument since version 3.3. Defining it will be required in 4.0. ', __METHOD__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('The %s() method expects a bit field of Request::HEADER_* as second argument since Symfony 3.3. Defining it will be required in 4.0. ', __METHOD__), E_USER_DEPRECATED);
 
             return;
         }
@@ -667,7 +667,7 @@ public static function getTrustedHosts()
      */
     public static function setTrustedHeaderName($key, $value)
     {
-        @trigger_error(sprintf('The "%s()" method is deprecated since version 3.3 and will be removed in 4.0. Use the $trustedHeaderSet argument of the Request::setTrustedProxies() method instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the $trustedHeaderSet argument of the Request::setTrustedProxies() method instead.', __METHOD__), E_USER_DEPRECATED);
 
         if ('forwarded' === $key) {
             $key = self::HEADER_FORWARDED;
@@ -707,7 +707,7 @@ public static function setTrustedHeaderName($key, $value)
     public static function getTrustedHeaderName($key)
     {
         if (2 > func_num_args() || func_get_arg(1)) {
-            @trigger_error(sprintf('The "%s()" method is deprecated since version 3.3 and will be removed in 4.0. Use the Request::getTrustedHeaderSet() method instead.', __METHOD__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the Request::getTrustedHeaderSet() method instead.', __METHOD__), E_USER_DEPRECATED);
         }
 
         if (!array_key_exists($key, self::$trustedHeaders)) {
@@ -1548,7 +1548,7 @@ public function isMethodSafe(/* $andCacheable = true */)
         if (!func_num_args() || func_get_arg(0)) {
             // This deprecation should be turned into a BadMethodCallException in 4.0 (without adding the argument in the signature)
             // then setting $andCacheable to false should be deprecated in 4.1
-            @trigger_error('Checking only for cacheable HTTP methods with Symfony\Component\HttpFoundation\Request::isMethodSafe() is deprecated since version 3.2 and will throw an exception in 4.0. Disable checking only for cacheable methods by calling the method with `false` as first argument or use the Request::isMethodCacheable() instead.', E_USER_DEPRECATED);
+            @trigger_error('Checking only for cacheable HTTP methods with Symfony\Component\HttpFoundation\Request::isMethodSafe() is deprecated since Symfony 3.2 and will throw an exception in 4.0. Disable checking only for cacheable methods by calling the method with `false` as first argument or use the Request::isMethodCacheable() instead.', E_USER_DEPRECATED);
 
             return in_array($this->getMethod(), array('GET', 'HEAD'));
         }
@@ -1990,6 +1990,7 @@ protected static function initializeFormats()
             'js' => array('application/javascript', 'application/x-javascript', 'text/javascript'),
             'css' => array('text/css'),
             'json' => array('application/json', 'application/x-json'),
+            'jsonld' => array('application/ld+json'),
             'xml' => array('text/xml', 'application/xml', 'application/x-xml'),
             'rdf' => array('application/rdf+xml'),
             'atom' => array('application/atom+xml'),
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcacheSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcacheSessionHandler.php
index 84f4357b1232..90726beb04ef 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcacheSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcacheSessionHandler.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\HttpFoundation\Session\Storage\Handler;
 
-@trigger_error(sprintf('The class %s is deprecated since version 3.4 and will be removed in 4.0. Use Symfony\Component\HttpFoundation\Session\Storage\Handler\MemcachedSessionHandler instead.', MemcacheSessionHandler::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The class %s is deprecated since Symfony 3.4 and will be removed in 4.0. Use Symfony\Component\HttpFoundation\Session\Storage\Handler\MemcachedSessionHandler instead.', MemcacheSessionHandler::class), E_USER_DEPRECATED);
 
 /**
  * @author Drak <drak@zikula.org>
@@ -33,6 +33,8 @@ class MemcacheSessionHandler implements \SessionHandlerInterface
     private $prefix;
 
     /**
+     * Constructor.
+     *
      * List of available options:
      *  * prefix: The prefix to use for the memcache keys in order to avoid collision
      *  * expiretime: The time to live in seconds
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcachedSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcachedSessionHandler.php
index 2d600b66cd40..9f4ef7028edb 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcachedSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcachedSessionHandler.php
@@ -34,6 +34,8 @@ class MemcachedSessionHandler extends AbstractSessionHandler
     private $prefix;
 
     /**
+     * Constructor.
+     *
      * List of available options:
      *  * prefix: The prefix to use for the memcached keys in order to avoid collision
      *  * expiretime: The time to live in seconds.
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MongoDbSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MongoDbSessionHandler.php
index 264144d5b523..7d3fa218a269 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MongoDbSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MongoDbSessionHandler.php
@@ -34,6 +34,8 @@ class MongoDbSessionHandler extends AbstractSessionHandler
     private $options;
 
     /**
+     * Constructor.
+     *
      * List of available options:
      *  * database: The name of the database [required]
      *  * collection: The name of the collection [required]
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/NativeSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/NativeSessionHandler.php
index 9ea4629ca16b..9be4528aeb43 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/NativeSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/NativeSessionHandler.php
@@ -19,6 +19,6 @@ class NativeSessionHandler extends \SessionHandler
 {
     public function __construct()
     {
-        @trigger_error('The '.__NAMESPACE__.'\NativeSessionHandler class is deprecated since version 3.4 and will be removed in 4.0. Use the \SessionHandler class instead.', E_USER_DEPRECATED);
+        @trigger_error('The '.__NAMESPACE__.'\NativeSessionHandler class is deprecated since Symfony 3.4 and will be removed in 4.0. Use the \SessionHandler class instead.', E_USER_DEPRECATED);
     }
 }
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/PdoSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/PdoSessionHandler.php
index bccfbf611f0d..68abc45c8a56 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/PdoSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/PdoSessionHandler.php
@@ -332,13 +332,7 @@ protected function doWrite($sessionId, $data)
                 return true;
             }
 
-            $updateStmt = $this->pdo->prepare(
-                "UPDATE $this->table SET $this->dataCol = :data, $this->lifetimeCol = :lifetime, $this->timeCol = :time WHERE $this->idCol = :id"
-            );
-            $updateStmt->bindParam(':id', $sessionId, \PDO::PARAM_STR);
-            $updateStmt->bindParam(':data', $data, \PDO::PARAM_LOB);
-            $updateStmt->bindParam(':lifetime', $maxlifetime, \PDO::PARAM_INT);
-            $updateStmt->bindValue(':time', time(), \PDO::PARAM_INT);
+            $updateStmt = $this->getUpdateStatement($sessionId, $data, $maxlifetime);
             $updateStmt->execute();
 
             // When MERGE is not supported, like in Postgres < 9.5, we have to use this approach that can result in
@@ -348,13 +342,7 @@ protected function doWrite($sessionId, $data)
             // false positives due to longer gap locking.
             if (!$updateStmt->rowCount()) {
                 try {
-                    $insertStmt = $this->pdo->prepare(
-                        "INSERT INTO $this->table ($this->idCol, $this->dataCol, $this->lifetimeCol, $this->timeCol) VALUES (:id, :data, :lifetime, :time)"
-                    );
-                    $insertStmt->bindParam(':id', $sessionId, \PDO::PARAM_STR);
-                    $insertStmt->bindParam(':data', $data, \PDO::PARAM_LOB);
-                    $insertStmt->bindParam(':lifetime', $maxlifetime, \PDO::PARAM_INT);
-                    $insertStmt->bindValue(':time', time(), \PDO::PARAM_INT);
+                    $insertStmt = $this->getInsertStatement($sessionId, $data, $maxlifetime);
                     $insertStmt->execute();
                 } catch (\PDOException $e) {
                     // Handle integrity violation SQLSTATE 23000 (or a subclass like 23505 in Postgres) for duplicate keys
@@ -547,13 +535,7 @@ protected function doRead($sessionId)
                 // Exclusive-reading of non-existent rows does not block, so we need to do an insert to block
                 // until other connections to the session are committed.
                 try {
-                    $insertStmt = $this->pdo->prepare(
-                        "INSERT INTO $this->table ($this->idCol, $this->dataCol, $this->lifetimeCol, $this->timeCol) VALUES (:id, :data, :lifetime, :time)"
-                    );
-                    $insertStmt->bindParam(':id', $sessionId, \PDO::PARAM_STR);
-                    $insertStmt->bindValue(':data', '', \PDO::PARAM_LOB);
-                    $insertStmt->bindValue(':lifetime', 0, \PDO::PARAM_INT);
-                    $insertStmt->bindValue(':time', time(), \PDO::PARAM_INT);
+                    $insertStmt = $this->getInsertStatement($sessionId, '', 0);
                     $insertStmt->execute();
                 } catch (\PDOException $e) {
                     // Catch duplicate key error because other connection created the session already.
@@ -688,6 +670,72 @@ private function getSelectSql()
         return "SELECT $this->dataCol, $this->lifetimeCol, $this->timeCol FROM $this->table WHERE $this->idCol = :id";
     }
 
+    /**
+     * Returns an insert statement supported by the database for writing session data.
+     *
+     * @param string $sessionId   Session ID
+     * @param string $sessionData Encoded session data
+     * @param int    $maxlifetime session.gc_maxlifetime
+     *
+     * @return \PDOStatement The insert statement
+     */
+    private function getInsertStatement($sessionId, $sessionData, $maxlifetime)
+    {
+        switch ($this->driver) {
+            case 'oci':
+                $data = fopen('php://memory', 'r+');
+                fwrite($data, $sessionData);
+                rewind($data);
+                $sql = "INSERT INTO $this->table ($this->idCol, $this->dataCol, $this->lifetimeCol, $this->timeCol) VALUES (:id, EMPTY_BLOB(), :lifetime, :time) RETURNING $this->dataCol into :data";
+                break;
+            default:
+                $data = $sessionData;
+                $sql = "INSERT INTO $this->table ($this->idCol, $this->dataCol, $this->lifetimeCol, $this->timeCol) VALUES (:id, :data, :lifetime, :time)";
+                break;
+        }
+
+        $stmt = $this->pdo->prepare($sql);
+        $stmt->bindParam(':id', $sessionId, \PDO::PARAM_STR);
+        $stmt->bindParam(':data', $data, \PDO::PARAM_LOB);
+        $stmt->bindParam(':lifetime', $maxlifetime, \PDO::PARAM_INT);
+        $stmt->bindValue(':time', time(), \PDO::PARAM_INT);
+
+        return $stmt;
+    }
+
+    /**
+     * Returns an update statement supported by the database for writing session data.
+     *
+     * @param string $sessionId   Session ID
+     * @param string $sessionData Encoded session data
+     * @param int    $maxlifetime session.gc_maxlifetime
+     *
+     * @return \PDOStatement The update statement
+     */
+    private function getUpdateStatement($sessionId, $sessionData, $maxlifetime)
+    {
+        switch ($this->driver) {
+            case 'oci':
+                $data = fopen('php://memory', 'r+');
+                fwrite($data, $sessionData);
+                rewind($data);
+                $sql = "UPDATE $this->table SET $this->dataCol = EMPTY_BLOB(), $this->lifetimeCol = :lifetime, $this->timeCol = :time WHERE $this->idCol = :id RETURNING $this->dataCol into :data";
+                break;
+            default:
+                $data = $sessionData;
+                $sql = "UPDATE $this->table SET $this->dataCol = :data, $this->lifetimeCol = :lifetime, $this->timeCol = :time WHERE $this->idCol = :id";
+                break;
+        }
+
+        $stmt = $this->pdo->prepare($sql);
+        $stmt->bindParam(':id', $sessionId, \PDO::PARAM_STR);
+        $stmt->bindParam(':data', $data, \PDO::PARAM_LOB);
+        $stmt->bindParam(':lifetime', $maxlifetime, \PDO::PARAM_INT);
+        $stmt->bindValue(':time', time(), \PDO::PARAM_INT);
+
+        return $stmt;
+    }
+
     /**
      * Returns a merge/upsert (i.e. insert or update) statement when supported by the database for writing session data.
      *
@@ -699,18 +747,11 @@ private function getSelectSql()
      */
     private function getMergeStatement($sessionId, $data, $maxlifetime)
     {
-        $mergeSql = null;
         switch (true) {
             case 'mysql' === $this->driver:
                 $mergeSql = "INSERT INTO $this->table ($this->idCol, $this->dataCol, $this->lifetimeCol, $this->timeCol) VALUES (:id, :data, :lifetime, :time) ".
                     "ON DUPLICATE KEY UPDATE $this->dataCol = VALUES($this->dataCol), $this->lifetimeCol = VALUES($this->lifetimeCol), $this->timeCol = VALUES($this->timeCol)";
                 break;
-            case 'oci' === $this->driver:
-                // DUAL is Oracle specific dummy table
-                $mergeSql = "MERGE INTO $this->table USING DUAL ON ($this->idCol = ?) ".
-                    "WHEN NOT MATCHED THEN INSERT ($this->idCol, $this->dataCol, $this->lifetimeCol, $this->timeCol) VALUES (?, ?, ?, ?) ".
-                    "WHEN MATCHED THEN UPDATE SET $this->dataCol = ?, $this->lifetimeCol = ?, $this->timeCol = ?";
-                break;
             case 'sqlsrv' === $this->driver && version_compare($this->pdo->getAttribute(\PDO::ATTR_SERVER_VERSION), '10', '>='):
                 // MERGE is only available since SQL Server 2008 and must be terminated by semicolon
                 // It also requires HOLDLOCK according to http://weblogs.sqlteam.com/dang/archive/2009/01/31/UPSERT-Race-Condition-With-MERGE.aspx
@@ -725,29 +766,30 @@ private function getMergeStatement($sessionId, $data, $maxlifetime)
                 $mergeSql = "INSERT INTO $this->table ($this->idCol, $this->dataCol, $this->lifetimeCol, $this->timeCol) VALUES (:id, :data, :lifetime, :time) ".
                     "ON CONFLICT ($this->idCol) DO UPDATE SET ($this->dataCol, $this->lifetimeCol, $this->timeCol) = (EXCLUDED.$this->dataCol, EXCLUDED.$this->lifetimeCol, EXCLUDED.$this->timeCol)";
                 break;
+            default:
+                // MERGE is not supported with LOBs: http://www.oracle.com/technetwork/articles/fuecks-lobs-095315.html
+                return null;
         }
 
-        if (null !== $mergeSql) {
-            $mergeStmt = $this->pdo->prepare($mergeSql);
-
-            if ('sqlsrv' === $this->driver || 'oci' === $this->driver) {
-                $mergeStmt->bindParam(1, $sessionId, \PDO::PARAM_STR);
-                $mergeStmt->bindParam(2, $sessionId, \PDO::PARAM_STR);
-                $mergeStmt->bindParam(3, $data, \PDO::PARAM_LOB);
-                $mergeStmt->bindParam(4, $maxlifetime, \PDO::PARAM_INT);
-                $mergeStmt->bindValue(5, time(), \PDO::PARAM_INT);
-                $mergeStmt->bindParam(6, $data, \PDO::PARAM_LOB);
-                $mergeStmt->bindParam(7, $maxlifetime, \PDO::PARAM_INT);
-                $mergeStmt->bindValue(8, time(), \PDO::PARAM_INT);
-            } else {
-                $mergeStmt->bindParam(':id', $sessionId, \PDO::PARAM_STR);
-                $mergeStmt->bindParam(':data', $data, \PDO::PARAM_LOB);
-                $mergeStmt->bindParam(':lifetime', $maxlifetime, \PDO::PARAM_INT);
-                $mergeStmt->bindValue(':time', time(), \PDO::PARAM_INT);
-            }
-
-            return $mergeStmt;
+        $mergeStmt = $this->pdo->prepare($mergeSql);
+
+        if ('sqlsrv' === $this->driver) {
+            $mergeStmt->bindParam(1, $sessionId, \PDO::PARAM_STR);
+            $mergeStmt->bindParam(2, $sessionId, \PDO::PARAM_STR);
+            $mergeStmt->bindParam(3, $data, \PDO::PARAM_LOB);
+            $mergeStmt->bindParam(4, $maxlifetime, \PDO::PARAM_INT);
+            $mergeStmt->bindValue(5, time(), \PDO::PARAM_INT);
+            $mergeStmt->bindParam(6, $data, \PDO::PARAM_LOB);
+            $mergeStmt->bindParam(7, $maxlifetime, \PDO::PARAM_INT);
+            $mergeStmt->bindValue(8, time(), \PDO::PARAM_INT);
+        } else {
+            $mergeStmt->bindParam(':id', $sessionId, \PDO::PARAM_STR);
+            $mergeStmt->bindParam(':data', $data, \PDO::PARAM_LOB);
+            $mergeStmt->bindParam(':lifetime', $maxlifetime, \PDO::PARAM_INT);
+            $mergeStmt->bindValue(':time', time(), \PDO::PARAM_INT);
         }
+
+        return $mergeStmt;
     }
 
     /**
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/WriteCheckSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/WriteCheckSessionHandler.php
index 2fc7e09195d3..1541ec4e0aa4 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/WriteCheckSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/WriteCheckSessionHandler.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\HttpFoundation\Session\Storage\Handler;
 
-@trigger_error(sprintf('The %s class is deprecated since version 3.4 and will be removed in 4.0. Implement `SessionUpdateTimestampHandlerInterface` or extend `AbstractSessionHandler` instead.', WriteCheckSessionHandler::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The %s class is deprecated since Symfony 3.4 and will be removed in 4.0. Implement `SessionUpdateTimestampHandlerInterface` or extend `AbstractSessionHandler` instead.', WriteCheckSessionHandler::class), E_USER_DEPRECATED);
 
 /**
  * Wraps another SessionHandlerInterface to only write the session when it has been modified.
diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Proxy/NativeProxy.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Proxy/NativeProxy.php
index 460abe15c3b7..082eed143eb4 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Proxy/NativeProxy.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Proxy/NativeProxy.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\HttpFoundation\Session\Storage\Proxy;
 
-@trigger_error('The '.__NAMESPACE__.'\NativeProxy class is deprecated since version 3.4 and will be removed in 4.0. Use your session handler implementation directly.', E_USER_DEPRECATED);
+@trigger_error('The '.__NAMESPACE__.'\NativeProxy class is deprecated since Symfony 3.4 and will be removed in 4.0. Use your session handler implementation directly.', E_USER_DEPRECATED);
 
 /**
  * This proxy is built-in session handlers in PHP 5.3.x.
diff --git a/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php b/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
index 3c4a13acf403..3c7e2b4f9ecc 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
@@ -372,6 +372,7 @@ public function getFormatToMimeTypeMapProvider()
             array('js', array('application/javascript', 'application/x-javascript', 'text/javascript')),
             array('css', array('text/css')),
             array('json', array('application/json', 'application/x-json')),
+            array('jsonld', array('application/ld+json')),
             array('xml', array('text/xml', 'application/xml', 'application/x-xml')),
             array('rdf', array('application/rdf+xml')),
             array('atom', array('application/atom+xml')),
@@ -968,6 +969,26 @@ public function testGetClientIpsWithConflictingHeaders($httpForwarded, $httpXFor
         $request->getClientIps();
     }
 
+    /**
+     * @dataProvider getClientIpsWithConflictingHeadersProvider
+     */
+    public function testGetClientIpsOnlyXHttpForwardedForTrusted($httpForwarded, $httpXForwardedFor)
+    {
+        $request = new Request();
+
+        $server = array(
+            'REMOTE_ADDR' => '88.88.88.88',
+            'HTTP_FORWARDED' => $httpForwarded,
+            'HTTP_X_FORWARDED_FOR' => $httpXForwardedFor,
+        );
+
+        Request::setTrustedProxies(array('88.88.88.88'), Request::HEADER_X_FORWARDED_FOR);
+
+        $request->initialize(array(), array(), array(), array(), array(), $server);
+
+        $this->assertSame(array_reverse(explode(',', $httpXForwardedFor)), $request->getClientIps());
+    }
+
     public function getClientIpsWithConflictingHeadersProvider()
     {
         //        $httpForwarded                   $httpXForwardedFor
@@ -1735,7 +1756,7 @@ public function testTrustedProxiesXForwardedFor()
 
     /**
      * @group legacy
-     * @expectedDeprecation The "Symfony\Component\HttpFoundation\Request::setTrustedHeaderName()" method is deprecated since version 3.3 and will be removed in 4.0. Use the $trustedHeaderSet argument of the Request::setTrustedProxies() method instead.
+     * @expectedDeprecation The "Symfony\Component\HttpFoundation\Request::setTrustedHeaderName()" method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the $trustedHeaderSet argument of the Request::setTrustedProxies() method instead.
      */
     public function testLegacyTrustedProxies()
     {
@@ -2105,7 +2126,7 @@ public function methodSafeProvider()
 
     /**
      * @group legacy
-     * @expectedDeprecation Checking only for cacheable HTTP methods with Symfony\Component\HttpFoundation\Request::isMethodSafe() is deprecated since version 3.2 and will throw an exception in 4.0. Disable checking only for cacheable methods by calling the method with `false` as first argument or use the Request::isMethodCacheable() instead.
+     * @expectedDeprecation Checking only for cacheable HTTP methods with Symfony\Component\HttpFoundation\Request::isMethodSafe() is deprecated since Symfony 3.2 and will throw an exception in 4.0. Disable checking only for cacheable methods by calling the method with `false` as first argument or use the Request::isMethodCacheable() instead.
      */
     public function testMethodSafeChecksCacheable()
     {
diff --git a/src/Symfony/Component/HttpFoundation/Tests/ResponseTest.php b/src/Symfony/Component/HttpFoundation/Tests/ResponseTest.php
index 9c5b34febfa3..350d972a9458 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/ResponseTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/ResponseTest.php
@@ -946,7 +946,7 @@ public function ianaCodesReasonPhrasesProvider()
 
         $ianaCodesReasonPhrases = array();
 
-        $xpath = new \DomXPath($ianaHttpStatusCodes);
+        $xpath = new \DOMXPath($ianaHttpStatusCodes);
         $xpath->registerNamespace('ns', 'http://www.iana.org/assignments');
 
         $records = $xpath->query('//ns:record');
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/NativeSessionHandlerTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/NativeSessionHandlerTest.php
index b5af1df36c4d..1a68d575e2c5 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/NativeSessionHandlerTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/NativeSessionHandlerTest.php
@@ -26,7 +26,7 @@
 class NativeSessionHandlerTest extends TestCase
 {
     /**
-     * @expectedDeprecation The Symfony\Component\HttpFoundation\Session\Storage\Handler\NativeSessionHandler class is deprecated since version 3.4 and will be removed in 4.0. Use the \SessionHandler class instead.
+     * @expectedDeprecation The Symfony\Component\HttpFoundation\Session\Storage\Handler\NativeSessionHandler class is deprecated since Symfony 3.4 and will be removed in 4.0. Use the \SessionHandler class instead.
      */
     public function testConstruct()
     {
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/StrictSessionHandlerTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/StrictSessionHandlerTest.php
index 9d2c1949f3d7..8e978487632e 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/StrictSessionHandlerTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/StrictSessionHandlerTest.php
@@ -24,8 +24,8 @@ public function testOpen()
             ->with('path', 'name')->willReturn(true);
         $proxy = new StrictSessionHandler($handler);
 
-        $this->assertInstanceof('SessionUpdateTimestampHandlerInterface', $proxy);
-        $this->assertInstanceof(AbstractSessionHandler::class, $proxy);
+        $this->assertInstanceOf('SessionUpdateTimestampHandlerInterface', $proxy);
+        $this->assertInstanceOf(AbstractSessionHandler::class, $proxy);
         $this->assertTrue($proxy->open('path', 'name'));
     }
 
diff --git a/src/Symfony/Component/HttpKernel/CacheClearer/ChainCacheClearer.php b/src/Symfony/Component/HttpKernel/CacheClearer/ChainCacheClearer.php
index 785a9918b39a..8ee4275b1686 100644
--- a/src/Symfony/Component/HttpKernel/CacheClearer/ChainCacheClearer.php
+++ b/src/Symfony/Component/HttpKernel/CacheClearer/ChainCacheClearer.php
@@ -49,7 +49,7 @@ public function clear($cacheDir)
      */
     public function add(CacheClearerInterface $clearer)
     {
-        @trigger_error(sprintf('The "%s()" method is deprecated since version 3.4 and will be removed in 4.0, inject the list of clearers as a constructor argument instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 3.4 and will be removed in 4.0, inject the list of clearers as a constructor argument instead.', __METHOD__), E_USER_DEPRECATED);
 
         $this->clearers[] = $clearer;
     }
diff --git a/src/Symfony/Component/HttpKernel/CacheClearer/Psr6CacheClearer.php b/src/Symfony/Component/HttpKernel/CacheClearer/Psr6CacheClearer.php
index 2336b18a2998..d413d2c9d641 100644
--- a/src/Symfony/Component/HttpKernel/CacheClearer/Psr6CacheClearer.php
+++ b/src/Symfony/Component/HttpKernel/CacheClearer/Psr6CacheClearer.php
@@ -27,7 +27,7 @@ public function __construct(array $pools = array())
 
     public function addPool(CacheItemPoolInterface $pool)
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Pass an array of pools indexed by name to the constructor instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Pass an array of pools indexed by name to the constructor instead.', __METHOD__), E_USER_DEPRECATED);
 
         $this->pools[] = $pool;
     }
diff --git a/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmerAggregate.php b/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmerAggregate.php
index 7b7b96bcc8f5..ca3911ed5f9d 100644
--- a/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmerAggregate.php
+++ b/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmerAggregate.php
@@ -68,7 +68,7 @@ public function isOptional()
      */
     public function setWarmers(array $warmers)
     {
-        @trigger_error(sprintf('The "%s()" method is deprecated since version 3.4 and will be removed in 4.0, inject the list of clearers as a constructor argument instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 3.4 and will be removed in 4.0, inject the list of clearers as a constructor argument instead.', __METHOD__), E_USER_DEPRECATED);
 
         $this->warmers = array();
         foreach ($warmers as $warmer) {
@@ -82,7 +82,7 @@ public function setWarmers(array $warmers)
     public function add(CacheWarmerInterface $warmer)
     {
         if ($this->triggerDeprecation) {
-            @trigger_error(sprintf('The "%s()" method is deprecated since version 3.4 and will be removed in 4.0, inject the list of clearers as a constructor argument instead.', __METHOD__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 3.4 and will be removed in 4.0, inject the list of clearers as a constructor argument instead.', __METHOD__), E_USER_DEPRECATED);
         }
 
         $this->warmers[] = $warmer;
diff --git a/src/Symfony/Component/HttpKernel/Client.php b/src/Symfony/Component/HttpKernel/Client.php
index d682ff72fafb..7979722d164f 100644
--- a/src/Symfony/Component/HttpKernel/Client.php
+++ b/src/Symfony/Component/HttpKernel/Client.php
@@ -25,7 +25,7 @@
  *
  * @author Fabien Potencier <fabien@symfony.com>
  *
- * @method Request|null getRequest() A Request instance
+ * @method Request|null  getRequest()  A Request instance
  * @method Response|null getResponse() A Response instance
  */
 class Client extends BaseClient
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/DataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/DataCollector.php
index 845c2c1380b0..30887ab91c72 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/DataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/DataCollector.php
@@ -71,7 +71,7 @@ protected function cloneVar($var)
                 $this->cloner->setMaxItems(-1);
                 $this->cloner->addCasters($this->getCasters());
             } else {
-                @trigger_error(sprintf('Using the %s() method without the VarDumper component is deprecated since version 3.2 and won\'t be supported in 4.0. Install symfony/var-dumper version 3.2 or above.', __METHOD__), E_USER_DEPRECATED);
+                @trigger_error(sprintf('Using the %s() method without the VarDumper component is deprecated since Symfony 3.2 and won\'t be supported in 4.0. Install symfony/var-dumper version 3.2 or above.', __METHOD__), E_USER_DEPRECATED);
                 $this->cloner = false;
             }
         }
@@ -97,7 +97,7 @@ protected function cloneVar($var)
      */
     protected function varToString($var)
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.2 and will be removed in 4.0. Use cloneVar() instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.2 and will be removed in 4.0. Use cloneVar() instead.', __METHOD__), E_USER_DEPRECATED);
 
         if (null === $this->valueExporter) {
             $this->valueExporter = new ValueExporter();
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/EventDataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/EventDataCollector.php
index ab44405edb2e..0a095ab68540 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/EventDataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/EventDataCollector.php
@@ -28,7 +28,7 @@ class EventDataCollector extends DataCollector implements LateDataCollectorInter
     public function __construct(EventDispatcherInterface $dispatcher = null)
     {
         if ($dispatcher instanceof TraceableEventDispatcherInterface && !method_exists($dispatcher, 'reset')) {
-            @trigger_error(sprintf('Implementing "%s" without the "reset()" method is deprecated since version 3.4 and will be unsupported in 4.0 for class "%s".', TraceableEventDispatcherInterface::class, \get_class($dispatcher)), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Implementing "%s" without the "reset()" method is deprecated since Symfony 3.4 and will be unsupported in 4.0 for class "%s".', TraceableEventDispatcherInterface::class, \get_class($dispatcher)), E_USER_DEPRECATED);
         }
         $this->dispatcher = $dispatcher;
     }
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/LoggerDataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/LoggerDataCollector.php
index 237ab7ade7c5..03bfa5d842ea 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/LoggerDataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/LoggerDataCollector.php
@@ -30,7 +30,7 @@ public function __construct($logger = null, $containerPathPrefix = null)
     {
         if (null !== $logger && $logger instanceof DebugLoggerInterface) {
             if (!method_exists($logger, 'clear')) {
-                @trigger_error(sprintf('Implementing "%s" without the "clear()" method is deprecated since version 3.4 and will be unsupported in 4.0 for class "%s".', DebugLoggerInterface::class, \get_class($logger)), E_USER_DEPRECATED);
+                @trigger_error(sprintf('Implementing "%s" without the "clear()" method is deprecated since Symfony 3.4 and will be unsupported in 4.0 for class "%s".', DebugLoggerInterface::class, \get_class($logger)), E_USER_DEPRECATED);
             }
 
             $this->logger = $logger;
diff --git a/src/Symfony/Component/HttpKernel/DataCollector/Util/ValueExporter.php b/src/Symfony/Component/HttpKernel/DataCollector/Util/ValueExporter.php
index ce201f5e768b..a71c00db99e5 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/Util/ValueExporter.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/Util/ValueExporter.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\HttpKernel\DataCollector\Util;
 
-@trigger_error('The '.__NAMESPACE__.'\ValueExporter class is deprecated since version 3.2 and will be removed in 4.0. Use the VarDumper component instead.', E_USER_DEPRECATED);
+@trigger_error('The '.__NAMESPACE__.'\ValueExporter class is deprecated since Symfony 3.2 and will be removed in 4.0. Use the VarDumper component instead.', E_USER_DEPRECATED);
 
 /**
  * @author Bernhard Schussek <bschussek@gmail.com>
diff --git a/src/Symfony/Component/HttpKernel/DependencyInjection/AddClassesToCachePass.php b/src/Symfony/Component/HttpKernel/DependencyInjection/AddClassesToCachePass.php
index 4ffa17511d88..8ae78e0d841d 100644
--- a/src/Symfony/Component/HttpKernel/DependencyInjection/AddClassesToCachePass.php
+++ b/src/Symfony/Component/HttpKernel/DependencyInjection/AddClassesToCachePass.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\HttpKernel\DependencyInjection;
 
-@trigger_error('The '.__NAMESPACE__.'\AddClassesToCachePass class is deprecated since version 3.3 and will be removed in 4.0.', E_USER_DEPRECATED);
+@trigger_error('The '.__NAMESPACE__.'\AddClassesToCachePass class is deprecated since Symfony 3.3 and will be removed in 4.0.', E_USER_DEPRECATED);
 
 /**
  * Sets the classes to compile in the cache for the container.
diff --git a/src/Symfony/Component/HttpKernel/DependencyInjection/Extension.php b/src/Symfony/Component/HttpKernel/DependencyInjection/Extension.php
index f6449f4e5231..a382c15d67b2 100644
--- a/src/Symfony/Component/HttpKernel/DependencyInjection/Extension.php
+++ b/src/Symfony/Component/HttpKernel/DependencyInjection/Extension.php
@@ -33,7 +33,7 @@ abstract class Extension extends BaseExtension
     public function getClassesToCompile()
     {
         if (\PHP_VERSION_ID >= 70000) {
-            @trigger_error(__METHOD__.'() is deprecated since version 3.3, to be removed in 4.0.', E_USER_DEPRECATED);
+            @trigger_error(__METHOD__.'() is deprecated since Symfony 3.3, to be removed in 4.0.', E_USER_DEPRECATED);
         }
 
         return $this->classes;
@@ -59,7 +59,7 @@ public function getAnnotatedClassesToCompile()
     public function addClassesToCompile(array $classes)
     {
         if (\PHP_VERSION_ID >= 70000) {
-            @trigger_error(__METHOD__.'() is deprecated since version 3.3, to be removed in 4.0.', E_USER_DEPRECATED);
+            @trigger_error(__METHOD__.'() is deprecated since Symfony 3.3, to be removed in 4.0.', E_USER_DEPRECATED);
         }
 
         $this->classes = array_merge($this->classes, $classes);
diff --git a/src/Symfony/Component/HttpKernel/DependencyInjection/LazyLoadingFragmentHandler.php b/src/Symfony/Component/HttpKernel/DependencyInjection/LazyLoadingFragmentHandler.php
index 314217acbd9d..00b05959cf38 100644
--- a/src/Symfony/Component/HttpKernel/DependencyInjection/LazyLoadingFragmentHandler.php
+++ b/src/Symfony/Component/HttpKernel/DependencyInjection/LazyLoadingFragmentHandler.php
@@ -51,7 +51,7 @@ public function __construct(ContainerInterface $container, RequestStack $request
      */
     public function addRendererService($name, $renderer)
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
 
         $this->rendererIds[$name] = $renderer;
     }
diff --git a/src/Symfony/Component/HttpKernel/EventListener/ExceptionListener.php b/src/Symfony/Component/HttpKernel/EventListener/ExceptionListener.php
index cf3a2f0a530b..937d1bd55eb2 100644
--- a/src/Symfony/Component/HttpKernel/EventListener/ExceptionListener.php
+++ b/src/Symfony/Component/HttpKernel/EventListener/ExceptionListener.php
@@ -13,7 +13,9 @@
 
 use Psr\Log\LoggerInterface;
 use Symfony\Component\Debug\Exception\FlattenException;
+use Symfony\Component\EventDispatcher\EventDispatcherInterface;
 use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpKernel\Event\FilterResponseEvent;
 use Symfony\Component\HttpKernel\Log\DebugLoggerInterface;
 use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent;
 use Symfony\Component\HttpKernel\KernelEvents;
@@ -41,6 +43,7 @@ public function onKernelException(GetResponseForExceptionEvent $event)
     {
         $exception = $event->getException();
         $request = $event->getRequest();
+        $eventDispatcher = func_num_args() > 2 ? func_get_arg(2) : null;
 
         $this->logException($exception, sprintf('Uncaught PHP Exception %s: "%s" at %s line %s', get_class($exception), $exception->getMessage(), $exception->getFile(), $exception->getLine()));
 
@@ -67,6 +70,14 @@ public function onKernelException(GetResponseForExceptionEvent $event)
         }
 
         $event->setResponse($response);
+
+        if ($eventDispatcher instanceof EventDispatcherInterface) {
+            $cspRemovalListener = function (FilterResponseEvent $event) use (&$cspRemovalListener, $eventDispatcher) {
+                $event->getResponse()->headers->remove('Content-Security-Policy');
+                $eventDispatcher->removeListener(KernelEvents::RESPONSE, $cspRemovalListener);
+            };
+            $eventDispatcher->addListener(KernelEvents::RESPONSE, $cspRemovalListener, -128);
+        }
     }
 
     public static function getSubscribedEvents()
diff --git a/src/Symfony/Component/HttpKernel/EventListener/SaveSessionListener.php b/src/Symfony/Component/HttpKernel/EventListener/SaveSessionListener.php
index 36809b59af91..1cee45e59a9d 100644
--- a/src/Symfony/Component/HttpKernel/EventListener/SaveSessionListener.php
+++ b/src/Symfony/Component/HttpKernel/EventListener/SaveSessionListener.php
@@ -53,6 +53,10 @@ public function onKernelResponse(FilterResponseEvent $event)
         $session = $event->getRequest()->getSession();
         if ($session && $session->isStarted()) {
             $session->save();
+            $event->getResponse()
+                ->setPrivate()
+                ->setMaxAge(0)
+                ->headers->addCacheControlDirective('must-revalidate');
         }
     }
 
diff --git a/src/Symfony/Component/HttpKernel/Fragment/AbstractSurrogateFragmentRenderer.php b/src/Symfony/Component/HttpKernel/Fragment/AbstractSurrogateFragmentRenderer.php
index 9526908a3785..a8dca41ba20c 100644
--- a/src/Symfony/Component/HttpKernel/Fragment/AbstractSurrogateFragmentRenderer.php
+++ b/src/Symfony/Component/HttpKernel/Fragment/AbstractSurrogateFragmentRenderer.php
@@ -63,7 +63,7 @@ public function render($uri, Request $request, array $options = array())
     {
         if (!$this->surrogate || !$this->surrogate->hasSurrogateCapability($request)) {
             if ($uri instanceof ControllerReference && $this->containsNonScalars($uri->attributes)) {
-                @trigger_error('Passing non-scalar values as part of URI attributes to the ESI and SSI rendering strategies is deprecated since version 3.1, and will be removed in 4.0. Use a different rendering strategy or pass scalar values.', E_USER_DEPRECATED);
+                @trigger_error('Passing non-scalar values as part of URI attributes to the ESI and SSI rendering strategies is deprecated since Symfony 3.1, and will be removed in 4.0. Use a different rendering strategy or pass scalar values.', E_USER_DEPRECATED);
             }
 
             return $this->inlineStrategy->render($uri, $request, $options);
diff --git a/src/Symfony/Component/HttpKernel/HttpKernel.php b/src/Symfony/Component/HttpKernel/HttpKernel.php
index a8d35af1fe69..41f8913bed40 100644
--- a/src/Symfony/Component/HttpKernel/HttpKernel.php
+++ b/src/Symfony/Component/HttpKernel/HttpKernel.php
@@ -240,7 +240,7 @@ private function handleException(\Exception $e, $request, $type)
 
         // the developer asked for a specific status code
         if ($response->headers->has('X-Status-Code')) {
-            @trigger_error(sprintf('Using the X-Status-Code header is deprecated since version 3.3 and will be removed in 4.0. Use %s::allowCustomResponseCode() instead.', GetResponseForExceptionEvent::class), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Using the X-Status-Code header is deprecated since Symfony 3.3 and will be removed in 4.0. Use %s::allowCustomResponseCode() instead.', GetResponseForExceptionEvent::class), E_USER_DEPRECATED);
 
             $response->setStatusCode($response->headers->get('X-Status-Code'));
 
diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index 94686a389ad7..363dc3d03248 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -67,11 +67,11 @@ abstract class Kernel implements KernelInterface, RebootableInterface, Terminabl
     private $requestStackSize = 0;
     private $resetServices = false;
 
-    const VERSION = '3.4.2';
-    const VERSION_ID = 30402;
+    const VERSION = '3.4.3';
+    const VERSION_ID = 30403;
     const MAJOR_VERSION = 3;
     const MINOR_VERSION = 4;
-    const RELEASE_VERSION = 2;
+    const RELEASE_VERSION = 3;
     const EXTRA_VERSION = '';
 
     const END_OF_MAINTENANCE = '11/2020';
@@ -398,7 +398,7 @@ public function getContainer()
     public function loadClassCache($name = 'classes', $extension = '.php')
     {
         if (\PHP_VERSION_ID >= 70000) {
-            @trigger_error(__METHOD__.'() is deprecated since version 3.3, to be removed in 4.0.', E_USER_DEPRECATED);
+            @trigger_error(__METHOD__.'() is deprecated since Symfony 3.3, to be removed in 4.0.', E_USER_DEPRECATED);
         }
 
         $this->loadClassCache = array($name, $extension);
@@ -412,7 +412,7 @@ public function loadClassCache($name = 'classes', $extension = '.php')
     public function setClassCache(array $classes)
     {
         if (\PHP_VERSION_ID >= 70000) {
-            @trigger_error(__METHOD__.'() is deprecated since version 3.3, to be removed in 4.0.', E_USER_DEPRECATED);
+            @trigger_error(__METHOD__.'() is deprecated since Symfony 3.3, to be removed in 4.0.', E_USER_DEPRECATED);
         }
 
         file_put_contents(($this->warmupDir ?: $this->getCacheDir()).'/classes.map', sprintf('<?php return %s;', var_export($classes, true)));
@@ -464,7 +464,7 @@ public function getCharset()
     protected function doLoadClassCache($name, $extension)
     {
         if (\PHP_VERSION_ID >= 70000) {
-            @trigger_error(__METHOD__.'() is deprecated since version 3.3, to be removed in 4.0.', E_USER_DEPRECATED);
+            @trigger_error(__METHOD__.'() is deprecated since Symfony 3.3, to be removed in 4.0.', E_USER_DEPRECATED);
         }
         $cacheDir = $this->warmupDir ?: $this->getCacheDir();
 
@@ -662,7 +662,7 @@ protected function initializeContainer()
             $oldContainerDir = dirname($oldContainer->getFileName());
             foreach (glob(dirname($oldContainerDir).'/*.legacy') as $legacyContainer) {
                 if ($oldContainerDir.'.legacy' !== $legacyContainer && @unlink($legacyContainer)) {
-                    (new Filesystem())->remove(substr($legacyContainer, 0, -16));
+                    (new Filesystem())->remove(substr($legacyContainer, 0, -7));
                 }
             }
 
diff --git a/src/Symfony/Component/HttpKernel/LICENSE b/src/Symfony/Component/HttpKernel/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/HttpKernel/LICENSE
+++ b/src/Symfony/Component/HttpKernel/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/HttpKernel/Profiler/Profiler.php b/src/Symfony/Component/HttpKernel/Profiler/Profiler.php
index 477025b081a0..15bfbc5a0777 100644
--- a/src/Symfony/Component/HttpKernel/Profiler/Profiler.php
+++ b/src/Symfony/Component/HttpKernel/Profiler/Profiler.php
@@ -212,7 +212,7 @@ public function set(array $collectors = array())
     public function add(DataCollectorInterface $collector)
     {
         if (!method_exists($collector, 'reset')) {
-            @trigger_error(sprintf('Implementing "%s" without the "reset()" method is deprecated since version 3.4 and will be unsupported in 4.0 for class "%s".', DataCollectorInterface::class, \get_class($collector)), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Implementing "%s" without the "reset()" method is deprecated since Symfony 3.4 and will be unsupported in 4.0 for class "%s".', DataCollectorInterface::class, \get_class($collector)), E_USER_DEPRECATED);
         }
 
         $this->collectors[$collector->getName()] = $collector;
diff --git a/src/Symfony/Component/HttpKernel/Tests/CacheClearer/Psr6CacheClearerTest.php b/src/Symfony/Component/HttpKernel/Tests/CacheClearer/Psr6CacheClearerTest.php
index a5d9b6ef4d1e..3e20efbf1f2c 100644
--- a/src/Symfony/Component/HttpKernel/Tests/CacheClearer/Psr6CacheClearerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/CacheClearer/Psr6CacheClearerTest.php
@@ -48,7 +48,7 @@ public function testClearPoolThrowsExceptionOnUnreferencedPool()
 
     /**
      * @group legacy
-     * @expectedDeprecation The Symfony\Component\HttpKernel\CacheClearer\Psr6CacheClearer::addPool() method is deprecated since version 3.3 and will be removed in 4.0. Pass an array of pools indexed by name to the constructor instead.
+     * @expectedDeprecation The Symfony\Component\HttpKernel\CacheClearer\Psr6CacheClearer::addPool() method is deprecated since Symfony 3.3 and will be removed in 4.0. Pass an array of pools indexed by name to the constructor instead.
      */
     public function testClearPoolsInjectedByAdder()
     {
diff --git a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/LazyLoadingFragmentHandlerTest.php b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/LazyLoadingFragmentHandlerTest.php
index 0406345d96d6..73021483738f 100644
--- a/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/LazyLoadingFragmentHandlerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/DependencyInjection/LazyLoadingFragmentHandlerTest.php
@@ -20,7 +20,7 @@ class LazyLoadingFragmentHandlerTest extends TestCase
 {
     /**
      * @group legacy
-     * @expectedDeprecation The Symfony\Component\HttpKernel\DependencyInjection\LazyLoadingFragmentHandler::addRendererService() method is deprecated since version 3.3 and will be removed in 4.0.
+     * @expectedDeprecation The Symfony\Component\HttpKernel\DependencyInjection\LazyLoadingFragmentHandler::addRendererService() method is deprecated since Symfony 3.3 and will be removed in 4.0.
      */
     public function testRenderWithLegacyMapping()
     {
diff --git a/src/Symfony/Component/HttpKernel/Tests/EventListener/ExceptionListenerTest.php b/src/Symfony/Component/HttpKernel/Tests/EventListener/ExceptionListenerTest.php
index a91157282b5f..db34f9187bd1 100644
--- a/src/Symfony/Component/HttpKernel/Tests/EventListener/ExceptionListenerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/EventListener/ExceptionListenerTest.php
@@ -12,8 +12,11 @@
 namespace Symfony\Component\HttpKernel\Tests\EventListener;
 
 use PHPUnit\Framework\TestCase;
+use Symfony\Component\EventDispatcher\EventDispatcher;
+use Symfony\Component\HttpKernel\Event\FilterResponseEvent;
 use Symfony\Component\HttpKernel\HttpKernelInterface;
 use Symfony\Component\HttpKernel\EventListener\ExceptionListener;
+use Symfony\Component\HttpKernel\KernelEvents;
 use Symfony\Component\HttpKernel\Log\DebugLoggerInterface;
 use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent;
 use Symfony\Component\HttpFoundation\Request;
@@ -122,6 +125,32 @@ public function testSubRequestFormat()
         $response = $event->getResponse();
         $this->assertEquals('xml', $response->getContent());
     }
+
+    public function testCSPHeaderIsRemoved()
+    {
+        $dispatcher = new EventDispatcher();
+        $kernel = $this->getMockBuilder('Symfony\Component\HttpKernel\HttpKernelInterface')->getMock();
+        $kernel->expects($this->once())->method('handle')->will($this->returnCallback(function (Request $request) {
+            return new Response($request->getRequestFormat());
+        }));
+
+        $listener = new ExceptionListener('foo', $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock());
+
+        $dispatcher->addSubscriber($listener);
+
+        $request = Request::create('/');
+        $event = new GetResponseForExceptionEvent($kernel, $request, HttpKernelInterface::MASTER_REQUEST, new \Exception('foo'));
+        $dispatcher->dispatch(KernelEvents::EXCEPTION, $event);
+
+        $response = new Response('', 200, array('content-security-policy' => "style-src 'self'"));
+        $this->assertTrue($response->headers->has('content-security-policy'));
+
+        $event = new FilterResponseEvent($kernel, $request, HttpKernelInterface::MASTER_REQUEST, $response);
+        $dispatcher->dispatch(KernelEvents::RESPONSE, $event);
+
+        $this->assertFalse($response->headers->has('content-security-policy'), 'CSP header has been removed');
+        $this->assertFalse($dispatcher->hasListeners(KernelEvents::RESPONSE), 'CSP removal listener has been removed');
+    }
 }
 
 class TestLogger extends Logger implements DebugLoggerInterface
diff --git a/src/Symfony/Component/HttpKernel/Tests/EventListener/SaveSessionListenerTest.php b/src/Symfony/Component/HttpKernel/Tests/EventListener/SaveSessionListenerTest.php
new file mode 100644
index 000000000000..80200881c5a0
--- /dev/null
+++ b/src/Symfony/Component/HttpKernel/Tests/EventListener/SaveSessionListenerTest.php
@@ -0,0 +1,53 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpKernel\Tests\EventListener;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\HttpFoundation\Session\SessionInterface;
+use Symfony\Component\HttpKernel\Event\FilterResponseEvent;
+use Symfony\Component\HttpKernel\EventListener\SaveSessionListener;
+use Symfony\Component\HttpKernel\HttpKernelInterface;
+
+class SaveSessionListenerTest extends TestCase
+{
+    public function testOnlyTriggeredOnMasterRequest()
+    {
+        $listener = new SaveSessionListener();
+        $event = $this->getMockBuilder(FilterResponseEvent::class)->disableOriginalConstructor()->getMock();
+        $event->expects($this->once())->method('isMasterRequest')->willReturn(false);
+        $event->expects($this->never())->method('getRequest');
+
+        // sub request
+        $listener->onKernelResponse($event);
+    }
+
+    public function testSessionSavedAndResponsePrivate()
+    {
+        $listener = new SaveSessionListener();
+        $kernel = $this->getMockBuilder(HttpKernelInterface::class)->disableOriginalConstructor()->getMock();
+
+        $session = $this->getMockBuilder(SessionInterface::class)->disableOriginalConstructor()->getMock();
+        $session->expects($this->once())->method('isStarted')->willReturn(true);
+        $session->expects($this->once())->method('save');
+
+        $request = new Request();
+        $request->setSession($session);
+        $response = new Response();
+        $listener->onKernelResponse(new FilterResponseEvent($kernel, $request, HttpKernelInterface::MASTER_REQUEST, $response));
+
+        $this->assertTrue($response->headers->hasCacheControlDirective('private'));
+        $this->assertTrue($response->headers->hasCacheControlDirective('must-revalidate'));
+        $this->assertSame('0', $response->headers->getCacheControlDirective('max-age'));
+    }
+}
diff --git a/src/Symfony/Component/HttpKernel/Tests/KernelTest.php b/src/Symfony/Component/HttpKernel/Tests/KernelTest.php
index 243529ed20a2..755e1db2b7dd 100644
--- a/src/Symfony/Component/HttpKernel/Tests/KernelTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/KernelTest.php
@@ -65,6 +65,31 @@ public function testClone()
         $this->assertNull($clone->getContainer());
     }
 
+    public function testInitializeContainerClearsOldContainers()
+    {
+        $fs = new Filesystem();
+        $legacyContainerDir = __DIR__.'/Fixtures/cache/custom/ContainerA123456';
+        $fs->mkdir($legacyContainerDir);
+        touch($legacyContainerDir.'.legacy');
+
+        $kernel = new CustomProjectDirKernel();
+        $kernel->boot();
+
+        $containerDir = __DIR__.'/Fixtures/cache/custom/'.substr(get_class($kernel->getContainer()), 0, 16);
+        $this->assertTrue(unlink(__DIR__.'/Fixtures/cache/custom/FixturesCustomDebugProjectContainer.php.meta'));
+        $this->assertFileExists($containerDir);
+        $this->assertFileNotExists($containerDir.'.legacy');
+
+        $kernel = new CustomProjectDirKernel(function ($container) { $container->register('foo', 'stdClass')->setPublic(true); });
+        $kernel->boot();
+
+        $this->assertFileExists($containerDir);
+        $this->assertFileExists($containerDir.'.legacy');
+
+        $this->assertFileNotExists($legacyContainerDir);
+        $this->assertFileNotExists($legacyContainerDir.'.legacy');
+    }
+
     public function testBootInitializesBundlesAndContainer()
     {
         $kernel = $this->getKernel(array('initializeBundles', 'initializeContainer'));
@@ -1022,7 +1047,7 @@ protected function getHttpKernel()
 
 class PassKernel extends CustomProjectDirKernel implements CompilerPassInterface
 {
-    public function __construct(\Closure $buildContainer = null)
+    public function __construct()
     {
         parent::__construct();
         Kernel::__construct('pass', true);
diff --git a/src/Symfony/Component/Inflector/LICENSE b/src/Symfony/Component/Inflector/LICENSE
index ac30964e87cc..fbcca13d6ae2 100644
--- a/src/Symfony/Component/Inflector/LICENSE
+++ b/src/Symfony/Component/Inflector/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2012-2017 Fabien Potencier
+Copyright (c) 2012-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Intl/Intl.php b/src/Symfony/Component/Intl/Intl.php
index 3fc1974bfc77..3444c10f8343 100644
--- a/src/Symfony/Component/Intl/Intl.php
+++ b/src/Symfony/Component/Intl/Intl.php
@@ -234,7 +234,7 @@ public static function getIcuDataVersion()
      */
     public static function getIcuStubVersion()
     {
-        return '60.1';
+        return '60.2';
     }
 
     /**
diff --git a/src/Symfony/Component/Intl/LICENSE b/src/Symfony/Component/Intl/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/Intl/LICENSE
+++ b/src/Symfony/Component/Intl/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Intl/Resources/bin/icu.ini b/src/Symfony/Component/Intl/Resources/bin/icu.ini
index f06bc753355d..da25128e2868 100644
--- a/src/Symfony/Component/Intl/Resources/bin/icu.ini
+++ b/src/Symfony/Component/Intl/Resources/bin/icu.ini
@@ -15,4 +15,4 @@
 57 = http://source.icu-project.org/repos/icu/icu/tags/release-57-1/source
 58 = http://source.icu-project.org/repos/icu/tags/release-58-2/icu4c/source
 59 = http://source.icu-project.org/repos/icu/tags/release-59-1/icu4c/source
-60 = http://source.icu-project.org/repos/icu/tags/release-60-1/icu4c/source
+60 = http://source.icu-project.org/repos/icu/tags/release-60-2/icu4c/source
diff --git a/src/Symfony/Component/Intl/Resources/data/currencies/de.json b/src/Symfony/Component/Intl/Resources/data/currencies/de.json
index 0a0796435719..015dfbd13899 100644
--- a/src/Symfony/Component/Intl/Resources/data/currencies/de.json
+++ b/src/Symfony/Component/Intl/Resources/data/currencies/de.json
@@ -1,5 +1,5 @@
 {
-    "Version": "2.1.37.11",
+    "Version": "2.1.37.96",
     "Names": {
         "ADP": [
             "ADP",
diff --git a/src/Symfony/Component/Intl/Resources/data/currencies/ur.json b/src/Symfony/Component/Intl/Resources/data/currencies/ur.json
index bbe4edc0ea76..0a5ca9e1d34c 100644
--- a/src/Symfony/Component/Intl/Resources/data/currencies/ur.json
+++ b/src/Symfony/Component/Intl/Resources/data/currencies/ur.json
@@ -1,5 +1,5 @@
 {
-    "Version": "2.1.37.28",
+    "Version": "2.1.37.69",
     "Names": {
         "AED": [
             "AED",
diff --git a/src/Symfony/Component/Intl/Resources/data/languages/de.json b/src/Symfony/Component/Intl/Resources/data/languages/de.json
index f4a01cd42163..58e7a7c571a7 100644
--- a/src/Symfony/Component/Intl/Resources/data/languages/de.json
+++ b/src/Symfony/Component/Intl/Resources/data/languages/de.json
@@ -1,5 +1,5 @@
 {
-    "Version": "2.1.37.11",
+    "Version": "2.1.37.96",
     "Names": {
         "aa": "Afar",
         "ab": "Abchasisch",
diff --git a/src/Symfony/Component/Intl/Resources/data/languages/ur.json b/src/Symfony/Component/Intl/Resources/data/languages/ur.json
index 33871c2dee4d..e28f6175c9c3 100644
--- a/src/Symfony/Component/Intl/Resources/data/languages/ur.json
+++ b/src/Symfony/Component/Intl/Resources/data/languages/ur.json
@@ -1,5 +1,5 @@
 {
-    "Version": "2.1.37.28",
+    "Version": "2.1.37.69",
     "Names": {
         "aa": "افار",
         "ab": "ابقازیان",
diff --git a/src/Symfony/Component/Intl/Resources/data/regions/de.json b/src/Symfony/Component/Intl/Resources/data/regions/de.json
index bd2259f58032..1bc40b718aed 100644
--- a/src/Symfony/Component/Intl/Resources/data/regions/de.json
+++ b/src/Symfony/Component/Intl/Resources/data/regions/de.json
@@ -1,5 +1,5 @@
 {
-    "Version": "2.1.37.11",
+    "Version": "2.1.37.96",
     "Names": {
         "AC": "Ascension",
         "AD": "Andorra",
diff --git a/src/Symfony/Component/Intl/Resources/data/regions/ur.json b/src/Symfony/Component/Intl/Resources/data/regions/ur.json
index a28f28f77023..89fbae8bf905 100644
--- a/src/Symfony/Component/Intl/Resources/data/regions/ur.json
+++ b/src/Symfony/Component/Intl/Resources/data/regions/ur.json
@@ -1,5 +1,5 @@
 {
-    "Version": "2.1.37.28",
+    "Version": "2.1.37.69",
     "Names": {
         "AC": "اسینشن آئلینڈ",
         "AD": "انڈورا",
diff --git a/src/Symfony/Component/Intl/Resources/data/scripts/de.json b/src/Symfony/Component/Intl/Resources/data/scripts/de.json
index 07898c2c2e95..735ee0fdcf61 100644
--- a/src/Symfony/Component/Intl/Resources/data/scripts/de.json
+++ b/src/Symfony/Component/Intl/Resources/data/scripts/de.json
@@ -1,5 +1,5 @@
 {
-    "Version": "2.1.37.11",
+    "Version": "2.1.37.96",
     "Names": {
         "Afak": "Afaka",
         "Aghb": "Kaukasisch-Albanisch",
diff --git a/src/Symfony/Component/Intl/Resources/data/scripts/ur.json b/src/Symfony/Component/Intl/Resources/data/scripts/ur.json
index bedfaaae754e..7c26e92044e0 100644
--- a/src/Symfony/Component/Intl/Resources/data/scripts/ur.json
+++ b/src/Symfony/Component/Intl/Resources/data/scripts/ur.json
@@ -1,5 +1,5 @@
 {
-    "Version": "2.1.37.28",
+    "Version": "2.1.37.69",
     "Names": {
         "Arab": "عربی",
         "Armn": "آرمینیائی",
diff --git a/src/Symfony/Component/Intl/Resources/data/svn-info.txt b/src/Symfony/Component/Intl/Resources/data/svn-info.txt
index c452480e2f9c..1bfc195f5bda 100644
--- a/src/Symfony/Component/Intl/Resources/data/svn-info.txt
+++ b/src/Symfony/Component/Intl/Resources/data/svn-info.txt
@@ -1,7 +1,7 @@
 SVN information
 ===============
 
-URL: http://source.icu-project.org/repos/icu/tags/release-60-1/icu4c/source
-Revision: 40662
+URL: http://source.icu-project.org/repos/icu/tags/release-60-2/icu4c/source
+Revision: 40727
 Author: yoshito
-Date: 2017-10-31T15:14:15.305164Z
+Date: 2017-12-13T20:01:38.026283Z
diff --git a/src/Symfony/Component/Intl/Resources/data/version.txt b/src/Symfony/Component/Intl/Resources/data/version.txt
index c4601b28ee75..76887d82ad20 100644
--- a/src/Symfony/Component/Intl/Resources/data/version.txt
+++ b/src/Symfony/Component/Intl/Resources/data/version.txt
@@ -1 +1 @@
-60.1
+60.2
diff --git a/src/Symfony/Component/Intl/Tests/DateFormatter/AbstractIntlDateFormatterTest.php b/src/Symfony/Component/Intl/Tests/DateFormatter/AbstractIntlDateFormatterTest.php
index 29727e6717cf..00c9ce0d1380 100644
--- a/src/Symfony/Component/Intl/Tests/DateFormatter/AbstractIntlDateFormatterTest.php
+++ b/src/Symfony/Component/Intl/Tests/DateFormatter/AbstractIntlDateFormatterTest.php
@@ -870,7 +870,9 @@ public function testParseWithNullPositionValue()
         $position = null;
         $formatter = $this->getDefaultDateFormatter('y');
         $this->assertSame(0, $formatter->parse('1970', $position));
-        $this->assertNull($position);
+        // Since $position is not supported by the Symfony implementation, the following won't work.
+        // The intl implementation works this way since 60.2.
+        // $this->assertSame(4, $position);
     }
 
     public function testSetPattern()
diff --git a/src/Symfony/Component/Ldap/LICENSE b/src/Symfony/Component/Ldap/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/Ldap/LICENSE
+++ b/src/Symfony/Component/Ldap/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Ldap/LdapClient.php b/src/Symfony/Component/Ldap/LdapClient.php
index b20c7ea4828d..4776879e8b12 100644
--- a/src/Symfony/Component/Ldap/LdapClient.php
+++ b/src/Symfony/Component/Ldap/LdapClient.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\Ldap;
 
-@trigger_error('The '.__NAMESPACE__.'\LdapClient class is deprecated since version 3.1 and will be removed in 4.0. Use the Ldap class directly instead.', E_USER_DEPRECATED);
+@trigger_error('The '.__NAMESPACE__.'\LdapClient class is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Ldap class directly instead.', E_USER_DEPRECATED);
 
 /**
  * @author Grégoire Pineau <lyrixx@lyrixx.info>
@@ -60,7 +60,7 @@ public function getEntryManager()
      */
     public function find($dn, $query, $filter = '*')
     {
-        @trigger_error('The "find" method is deprecated since version 3.1 and will be removed in 4.0. Use the "query" method instead.', E_USER_DEPRECATED);
+        @trigger_error('The "find" method is deprecated since Symfony 3.1 and will be removed in 4.0. Use the "query" method instead.', E_USER_DEPRECATED);
 
         $query = $this->ldap->query($dn, $query, array('filter' => $filter));
         $entries = $query->execute();
diff --git a/src/Symfony/Component/Lock/LICENSE b/src/Symfony/Component/Lock/LICENSE
index ce39894f6a9a..fcd3fa76970f 100644
--- a/src/Symfony/Component/Lock/LICENSE
+++ b/src/Symfony/Component/Lock/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2016-2017 Fabien Potencier
+Copyright (c) 2016-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/OptionsResolver/CHANGELOG.md b/src/Symfony/Component/OptionsResolver/CHANGELOG.md
index c8f024460219..6e9d49fb61d7 100644
--- a/src/Symfony/Component/OptionsResolver/CHANGELOG.md
+++ b/src/Symfony/Component/OptionsResolver/CHANGELOG.md
@@ -31,7 +31,7 @@ CHANGELOG
  * deprecated OptionsResolver::isKnown() in favor of isDefined()
  * [BC BREAK] OptionsResolver::isRequired() returns true now if a required
    option has a default value set
- * [BC BREAK] merged Options into OptionsResolver and turned Options into an 
+ * [BC BREAK] merged Options into OptionsResolver and turned Options into an
    interface
  * deprecated Options::overload() (now in OptionsResolver)
  * deprecated Options::set() (now in OptionsResolver)
@@ -42,7 +42,7 @@ CHANGELOG
    lazy option/normalizer closures now
  * [BC BREAK] removed Traversable interface from Options since using within
    lazy option/normalizer closures resulted in exceptions
- * [BC BREAK] removed Options::all() since using within lazy option/normalizer 
+ * [BC BREAK] removed Options::all() since using within lazy option/normalizer
    closures resulted in exceptions
  * [BC BREAK] OptionDefinitionException now extends LogicException instead of
    RuntimeException
diff --git a/src/Symfony/Component/OptionsResolver/LICENSE b/src/Symfony/Component/OptionsResolver/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/OptionsResolver/LICENSE
+++ b/src/Symfony/Component/OptionsResolver/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Process/LICENSE b/src/Symfony/Component/Process/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/Process/LICENSE
+++ b/src/Symfony/Component/Process/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Process/PhpProcess.php b/src/Symfony/Component/Process/PhpProcess.php
index 354b9ca7a480..d3fd384afc4a 100644
--- a/src/Symfony/Component/Process/PhpProcess.php
+++ b/src/Symfony/Component/Process/PhpProcess.php
@@ -47,7 +47,7 @@ public function __construct($script, $cwd = null, array $env = null, $timeout =
             $script = null;
         }
         if (null !== $options) {
-            @trigger_error(sprintf('The $options parameter of the %s constructor is deprecated since version 3.3 and will be removed in 4.0.', __CLASS__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('The $options parameter of the %s constructor is deprecated since Symfony 3.3 and will be removed in 4.0.', __CLASS__), E_USER_DEPRECATED);
         }
 
         parent::__construct($php, $cwd, $env, $script, $timeout, $options);
diff --git a/src/Symfony/Component/Process/Process.php b/src/Symfony/Component/Process/Process.php
index 22af36e7c486..1b17f8984d1a 100644
--- a/src/Symfony/Component/Process/Process.php
+++ b/src/Symfony/Component/Process/Process.php
@@ -167,7 +167,7 @@ public function __construct($commandline, $cwd = null, array $env = null, $input
         $this->pty = false;
         $this->enhanceSigchildCompatibility = '\\' !== DIRECTORY_SEPARATOR && $this->isSigchildEnabled();
         if (null !== $options) {
-            @trigger_error(sprintf('The $options parameter of the %s constructor is deprecated since version 3.3 and will be removed in 4.0.', __CLASS__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('The $options parameter of the %s constructor is deprecated since Symfony 3.3 and will be removed in 4.0.', __CLASS__), E_USER_DEPRECATED);
             $this->options = array_replace($this->options, $options);
         }
     }
@@ -273,7 +273,7 @@ public function start(callable $callback = null/*, array $env = array()*/)
             if (__CLASS__ !== static::class) {
                 $r = new \ReflectionMethod($this, __FUNCTION__);
                 if (__CLASS__ !== $r->getDeclaringClass()->getName() && (2 > $r->getNumberOfParameters() || 'env' !== $r->getParameters()[0]->name)) {
-                    @trigger_error(sprintf('The %s::start() method expects a second "$env" argument since version 3.3. It will be made mandatory in 4.0.', static::class), E_USER_DEPRECATED);
+                    @trigger_error(sprintf('The %s::start() method expects a second "$env" argument since Symfony 3.3. It will be made mandatory in 4.0.', static::class), E_USER_DEPRECATED);
                 }
             }
             $env = null;
@@ -326,12 +326,20 @@ public function start(callable $callback = null/*, array $env = array()*/)
             // @see : https://bugs.php.net/69442
             $ptsWorkaround = fopen(__FILE__, 'r');
         }
+        if (defined('HHVM_VERSION')) {
+            $envPairs = $env;
+        } else {
+            $envPairs = array();
+            foreach ($env as $k => $v) {
+                $envPairs[] = $k.'='.$v;
+            }
+        }
 
         if (!is_dir($this->cwd)) {
-            @trigger_error('The provided cwd does not exist. Command is currently ran against getcwd(). This behavior is deprecated since version 3.4 and will be removed in 4.0.', E_USER_DEPRECATED);
+            @trigger_error('The provided cwd does not exist. Command is currently ran against getcwd(). This behavior is deprecated since Symfony 3.4 and will be removed in 4.0.', E_USER_DEPRECATED);
         }
 
-        $this->process = proc_open($commandline, $descriptors, $this->processPipes->pipes, $this->cwd, $env, $this->options);
+        $this->process = proc_open($commandline, $descriptors, $this->processPipes->pipes, $this->cwd, $envPairs, $this->options);
 
         if (!is_resource($this->process)) {
             throw new RuntimeException('Unable to launch a new process.');
@@ -1180,7 +1188,7 @@ public function setInput($input)
      */
     public function getOptions()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
 
         return $this->options;
     }
@@ -1196,7 +1204,7 @@ public function getOptions()
      */
     public function setOptions(array $options)
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
 
         $this->options = $options;
 
@@ -1214,7 +1222,7 @@ public function setOptions(array $options)
      */
     public function getEnhanceWindowsCompatibility()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Enhanced Windows compatibility will always be enabled.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Enhanced Windows compatibility will always be enabled.', __METHOD__), E_USER_DEPRECATED);
 
         return $this->enhanceWindowsCompatibility;
     }
@@ -1230,7 +1238,7 @@ public function getEnhanceWindowsCompatibility()
      */
     public function setEnhanceWindowsCompatibility($enhance)
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Enhanced Windows compatibility will always be enabled.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Enhanced Windows compatibility will always be enabled.', __METHOD__), E_USER_DEPRECATED);
 
         $this->enhanceWindowsCompatibility = (bool) $enhance;
 
@@ -1246,7 +1254,7 @@ public function setEnhanceWindowsCompatibility($enhance)
      */
     public function getEnhanceSigchildCompatibility()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Sigchild compatibility will always be enabled.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Sigchild compatibility will always be enabled.', __METHOD__), E_USER_DEPRECATED);
 
         return $this->enhanceSigchildCompatibility;
     }
@@ -1266,7 +1274,7 @@ public function getEnhanceSigchildCompatibility()
      */
     public function setEnhanceSigchildCompatibility($enhance)
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Sigchild compatibility will always be enabled.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Sigchild compatibility will always be enabled.', __METHOD__), E_USER_DEPRECATED);
 
         $this->enhanceSigchildCompatibility = (bool) $enhance;
 
@@ -1300,7 +1308,7 @@ public function inheritEnvironmentVariables($inheritEnv = true)
      */
     public function areEnvironmentVariablesInherited()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Environment variables will always be inherited.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Environment variables will always be inherited.', __METHOD__), E_USER_DEPRECATED);
 
         return $this->inheritEnv;
     }
@@ -1722,15 +1730,11 @@ private function escapeArgument($argument)
 
     private function getDefaultEnv()
     {
-        if (\PHP_VERSION_ID >= 70100) {
-            $env = getenv();
-        } else {
-            $env = array();
+        $env = array();
 
-            foreach ($_SERVER as $k => $v) {
-                if (is_string($v) && false !== $v = getenv($k)) {
-                    $env[$k] = $v;
-                }
+        foreach ($_SERVER as $k => $v) {
+            if (is_string($v) && false !== $v = getenv($k)) {
+                $env[$k] = $v;
             }
         }
 
diff --git a/src/Symfony/Component/Process/ProcessBuilder.php b/src/Symfony/Component/Process/ProcessBuilder.php
index 56ed9b76e662..26257c21e64d 100644
--- a/src/Symfony/Component/Process/ProcessBuilder.php
+++ b/src/Symfony/Component/Process/ProcessBuilder.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\Process;
 
-@trigger_error(sprintf('The %s class is deprecated since version 3.4 and will be removed in 4.0. Use the Process class instead.', ProcessBuilder::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The %s class is deprecated since Symfony 3.4 and will be removed in 4.0. Use the Process class instead.', ProcessBuilder::class), E_USER_DEPRECATED);
 
 use Symfony\Component\Process\Exception\InvalidArgumentException;
 use Symfony\Component\Process\Exception\LogicException;
diff --git a/src/Symfony/Component/Process/ProcessUtils.php b/src/Symfony/Component/Process/ProcessUtils.php
index 24438d985cad..c30950c1da2f 100644
--- a/src/Symfony/Component/Process/ProcessUtils.php
+++ b/src/Symfony/Component/Process/ProcessUtils.php
@@ -40,7 +40,7 @@ private function __construct()
      */
     public static function escapeArgument($argument)
     {
-        @trigger_error('The '.__METHOD__.'() method is deprecated since version 3.3 and will be removed in 4.0. Use a command line array or give env vars to the Process::start/run() method instead.', E_USER_DEPRECATED);
+        @trigger_error('The '.__METHOD__.'() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use a command line array or give env vars to the Process::start/run() method instead.', E_USER_DEPRECATED);
 
         //Fix for PHP bug #43784 escapeshellarg removes % from given string
         //Fix for PHP bug #49446 escapeshellarg doesn't work on Windows
diff --git a/src/Symfony/Component/Process/Tests/ProcessTest.php b/src/Symfony/Component/Process/Tests/ProcessTest.php
index a38287bcd978..bca7ddd9af10 100644
--- a/src/Symfony/Component/Process/Tests/ProcessTest.php
+++ b/src/Symfony/Component/Process/Tests/ProcessTest.php
@@ -50,10 +50,14 @@ protected function tearDown()
 
     /**
      * @group legacy
-     * @expectedDeprecation The provided cwd does not exist. Command is currently ran against getcwd(). This behavior is deprecated since version 3.4 and will be removed in 4.0.
+     * @expectedDeprecation The provided cwd does not exist. Command is currently ran against getcwd(). This behavior is deprecated since Symfony 3.4 and will be removed in 4.0.
      */
     public function testInvalidCwd()
     {
+        if ('\\' === DIRECTORY_SEPARATOR) {
+            $this->markTestSkipped('False-positive on Windows/appveyor.');
+        }
+
         // Check that it works fine if the CWD exists
         $cmd = new Process('echo test', __DIR__);
         $cmd->run();
@@ -1437,14 +1441,14 @@ public function testEnvBackupDoesNotDeleteExistingVars()
 
     public function testEnvIsInherited()
     {
-        $process = $this->getProcessForCode('echo serialize($_SERVER);', null, array('BAR' => 'BAZ'));
+        $process = $this->getProcessForCode('echo serialize($_SERVER);', null, array('BAR' => 'BAZ', 'EMPTY' => ''));
 
         putenv('FOO=BAR');
         $_ENV['FOO'] = 'BAR';
 
         $process->run();
 
-        $expected = array('BAR' => 'BAZ', 'FOO' => 'BAR');
+        $expected = array('BAR' => 'BAZ', 'EMPTY' => '', 'FOO' => 'BAR');
         $env = array_intersect_key(unserialize($process->getOutput()), $expected);
 
         $this->assertEquals($expected, $env);
diff --git a/src/Symfony/Component/PropertyAccess/LICENSE b/src/Symfony/Component/PropertyAccess/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/PropertyAccess/LICENSE
+++ b/src/Symfony/Component/PropertyAccess/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/PropertyAccess/PropertyAccessor.php b/src/Symfony/Component/PropertyAccess/PropertyAccessor.php
index c23229dd86ca..d0db3946e47f 100644
--- a/src/Symfony/Component/PropertyAccess/PropertyAccessor.php
+++ b/src/Symfony/Component/PropertyAccess/PropertyAccessor.php
@@ -245,7 +245,7 @@ public function setValue(&$objectOrArray, $propertyPath, $value)
     /**
      * @internal
      */
-    public static function handleError($type, $message, $file, $line, $context)
+    public static function handleError($type, $message, $file, $line, $context = array())
     {
         if (E_RECOVERABLE_ERROR === $type) {
             self::throwInvalidArgumentException($message, debug_backtrace(false), 1);
diff --git a/src/Symfony/Component/PropertyAccess/StringUtil.php b/src/Symfony/Component/PropertyAccess/StringUtil.php
index 6765dd776b2b..02e598f709e2 100644
--- a/src/Symfony/Component/PropertyAccess/StringUtil.php
+++ b/src/Symfony/Component/PropertyAccess/StringUtil.php
@@ -44,7 +44,7 @@ private function __construct()
      */
     public static function singularify($plural)
     {
-        @trigger_error('StringUtil::singularify() is deprecated since version 3.1 and will be removed in 4.0. Use Symfony\Component\Inflector\Inflector::singularize instead.', E_USER_DEPRECATED);
+        @trigger_error('StringUtil::singularify() is deprecated since Symfony 3.1 and will be removed in 4.0. Use Symfony\Component\Inflector\Inflector::singularize instead.', E_USER_DEPRECATED);
 
         return Inflector::singularize($plural);
     }
diff --git a/src/Symfony/Component/PropertyInfo/LICENSE b/src/Symfony/Component/PropertyInfo/LICENSE
index 2ca4d6305bf2..24fa32c2e9b2 100644
--- a/src/Symfony/Component/PropertyInfo/LICENSE
+++ b/src/Symfony/Component/PropertyInfo/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2015-2017 Fabien Potencier
+Copyright (c) 2015-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Routing/Generator/UrlGenerator.php b/src/Symfony/Component/Routing/Generator/UrlGenerator.php
index 4d00f3a096e3..02a59a925397 100644
--- a/src/Symfony/Component/Routing/Generator/UrlGenerator.php
+++ b/src/Symfony/Component/Routing/Generator/UrlGenerator.php
@@ -181,57 +181,56 @@ protected function doGenerate($variables, $defaults, $requirements, $tokens, $pa
         }
 
         $schemeAuthority = '';
-        if ($host = $this->context->getHost()) {
-            $scheme = $this->context->getScheme();
+        $host = $this->context->getHost();
+        $scheme = $this->context->getScheme();
 
-            if ($requiredSchemes) {
-                if (!in_array($scheme, $requiredSchemes, true)) {
-                    $referenceType = self::ABSOLUTE_URL;
-                    $scheme = current($requiredSchemes);
-                }
+        if ($requiredSchemes) {
+            if (!in_array($scheme, $requiredSchemes, true)) {
+                $referenceType = self::ABSOLUTE_URL;
+                $scheme = current($requiredSchemes);
             }
+        }
 
-            if ($hostTokens) {
-                $routeHost = '';
-                foreach ($hostTokens as $token) {
-                    if ('variable' === $token[0]) {
-                        if (null !== $this->strictRequirements && !preg_match('#^'.$token[2].'$#i'.(empty($token[4]) ? '' : 'u'), $mergedParams[$token[3]])) {
-                            if ($this->strictRequirements) {
-                                throw new InvalidParameterException(strtr($message, array('{parameter}' => $token[3], '{route}' => $name, '{expected}' => $token[2], '{given}' => $mergedParams[$token[3]])));
-                            }
-
-                            if ($this->logger) {
-                                $this->logger->error($message, array('parameter' => $token[3], 'route' => $name, 'expected' => $token[2], 'given' => $mergedParams[$token[3]]));
-                            }
+        if ($hostTokens) {
+            $routeHost = '';
+            foreach ($hostTokens as $token) {
+                if ('variable' === $token[0]) {
+                    if (null !== $this->strictRequirements && !preg_match('#^'.$token[2].'$#i'.(empty($token[4]) ? '' : 'u'), $mergedParams[$token[3]])) {
+                        if ($this->strictRequirements) {
+                            throw new InvalidParameterException(strtr($message, array('{parameter}' => $token[3], '{route}' => $name, '{expected}' => $token[2], '{given}' => $mergedParams[$token[3]])));
+                        }
 
-                            return;
+                        if ($this->logger) {
+                            $this->logger->error($message, array('parameter' => $token[3], 'route' => $name, 'expected' => $token[2], 'given' => $mergedParams[$token[3]]));
                         }
 
-                        $routeHost = $token[1].$mergedParams[$token[3]].$routeHost;
-                    } else {
-                        $routeHost = $token[1].$routeHost;
+                        return;
                     }
-                }
 
-                if ($routeHost !== $host) {
-                    $host = $routeHost;
-                    if (self::ABSOLUTE_URL !== $referenceType) {
-                        $referenceType = self::NETWORK_PATH;
-                    }
+                    $routeHost = $token[1].$mergedParams[$token[3]].$routeHost;
+                } else {
+                    $routeHost = $token[1].$routeHost;
                 }
             }
 
-            if (self::ABSOLUTE_URL === $referenceType || self::NETWORK_PATH === $referenceType) {
-                $port = '';
-                if ('http' === $scheme && 80 != $this->context->getHttpPort()) {
-                    $port = ':'.$this->context->getHttpPort();
-                } elseif ('https' === $scheme && 443 != $this->context->getHttpsPort()) {
-                    $port = ':'.$this->context->getHttpsPort();
+            if ($routeHost !== $host) {
+                $host = $routeHost;
+                if (self::ABSOLUTE_URL !== $referenceType) {
+                    $referenceType = self::NETWORK_PATH;
                 }
+            }
+        }
 
-                $schemeAuthority = self::NETWORK_PATH === $referenceType ? '//' : "$scheme://";
-                $schemeAuthority .= $host.$port;
+        if ((self::ABSOLUTE_URL === $referenceType || self::NETWORK_PATH === $referenceType) && !empty($host)) {
+            $port = '';
+            if ('http' === $scheme && 80 != $this->context->getHttpPort()) {
+                $port = ':'.$this->context->getHttpPort();
+            } elseif ('https' === $scheme && 443 != $this->context->getHttpsPort()) {
+                $port = ':'.$this->context->getHttpsPort();
             }
+
+            $schemeAuthority = self::NETWORK_PATH === $referenceType ? '//' : "$scheme://";
+            $schemeAuthority .= $host.$port;
         }
 
         if (self::RELATIVE_PATH === $referenceType) {
diff --git a/src/Symfony/Component/Routing/LICENSE b/src/Symfony/Component/Routing/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/Routing/LICENSE
+++ b/src/Symfony/Component/Routing/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Routing/Route.php b/src/Symfony/Component/Routing/Route.php
index 4f84c41ca388..cd50ac8276f6 100644
--- a/src/Symfony/Component/Routing/Route.php
+++ b/src/Symfony/Component/Routing/Route.php
@@ -34,6 +34,8 @@ class Route implements \Serializable
     private $compiled;
 
     /**
+     * Constructor.
+     *
      * Available options:
      *
      *  * compiler_class: A class name able to compile this route instance (RouteCompiler by default)
diff --git a/src/Symfony/Component/Routing/Tests/Generator/UrlGeneratorTest.php b/src/Symfony/Component/Routing/Tests/Generator/UrlGeneratorTest.php
index e334e437e1ee..68add771b718 100644
--- a/src/Symfony/Component/Routing/Tests/Generator/UrlGeneratorTest.php
+++ b/src/Symfony/Component/Routing/Tests/Generator/UrlGeneratorTest.php
@@ -478,6 +478,38 @@ public function testHostIsCaseInsensitive()
         $this->assertSame('//EN.FooBar.com/app.php/', $generator->generate('test', array('locale' => 'EN'), UrlGeneratorInterface::NETWORK_PATH));
     }
 
+    public function testDefaultHostIsUsedWhenContextHostIsEmpty()
+    {
+        $routes = $this->getRoutes('test', new Route('/route', array('domain' => 'my.fallback.host'), array('domain' => '.+'), array(), '{domain}', array('http')));
+
+        $generator = $this->getGenerator($routes);
+        $generator->getContext()->setHost('');
+
+        $this->assertSame('http://my.fallback.host/app.php/route', $generator->generate('test', array(), UrlGeneratorInterface::ABSOLUTE_URL));
+    }
+
+    public function testDefaultHostIsUsedWhenContextHostIsEmptyAndSchemeIsNot()
+    {
+        $routes = $this->getRoutes('test', new Route('/route', array('domain' => 'my.fallback.host'), array('domain' => '.+'), array(), '{domain}', array('http', 'https')));
+
+        $generator = $this->getGenerator($routes);
+        $generator->getContext()->setHost('');
+        $generator->getContext()->setScheme('https');
+
+        $this->assertSame('https://my.fallback.host/app.php/route', $generator->generate('test', array(), UrlGeneratorInterface::ABSOLUTE_URL));
+    }
+
+    public function testAbsoluteUrlFallbackToRelativeIfHostIsEmptyAndSchemeIsNot()
+    {
+        $routes = $this->getRoutes('test', new Route('/route', array(), array(), array(), '', array('http', 'https')));
+
+        $generator = $this->getGenerator($routes);
+        $generator->getContext()->setHost('');
+        $generator->getContext()->setScheme('https');
+
+        $this->assertSame('/app.php/route', $generator->generate('test', array(), UrlGeneratorInterface::ABSOLUTE_URL));
+    }
+
     public function testGenerateNetworkPath()
     {
         $routes = $this->getRoutes('test', new Route('/{name}', array(), array(), array(), '{locale}.example.com', array('http')));
diff --git a/src/Symfony/Component/Routing/Tests/Matcher/Dumper/PhpMatcherDumperTest.php b/src/Symfony/Component/Routing/Tests/Matcher/Dumper/PhpMatcherDumperTest.php
index 37ac752a6bf9..e4c18c47b144 100644
--- a/src/Symfony/Component/Routing/Tests/Matcher/Dumper/PhpMatcherDumperTest.php
+++ b/src/Symfony/Component/Routing/Tests/Matcher/Dumper/PhpMatcherDumperTest.php
@@ -75,7 +75,7 @@ public function testRedirectPreservesUrlEncoding()
                         ->setMethods(array('redirect'))
                         ->setConstructorArgs(array(new RequestContext()))
                         ->getMock();
-        
+
         $matcher->expects($this->once())->method('redirect')->with('/foo%3Abar/', 'foo')->willReturn(array());
 
         $matcher->match('/foo%3Abar');
diff --git a/src/Symfony/Component/Security/Core/Authorization/AccessDecisionManager.php b/src/Symfony/Component/Security/Core/Authorization/AccessDecisionManager.php
index f50caf8cfe8b..23fb40849687 100644
--- a/src/Symfony/Component/Security/Core/Authorization/AccessDecisionManager.php
+++ b/src/Symfony/Component/Security/Core/Authorization/AccessDecisionManager.php
@@ -62,7 +62,7 @@ public function __construct($voters = array(), $strategy = self::STRATEGY_AFFIRM
      */
     public function setVoters(array $voters)
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Pass the voters to the constructor instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Pass the voters to the constructor instead.', __METHOD__), E_USER_DEPRECATED);
 
         $this->voters = $voters;
     }
diff --git a/src/Symfony/Component/Security/Core/Authorization/TraceableAccessDecisionManager.php b/src/Symfony/Component/Security/Core/Authorization/TraceableAccessDecisionManager.php
index 1e3ed546c8ae..dc77ab2df687 100644
--- a/src/Symfony/Component/Security/Core/Authorization/TraceableAccessDecisionManager.php
+++ b/src/Symfony/Component/Security/Core/Authorization/TraceableAccessDecisionManager.php
@@ -67,7 +67,7 @@ public function decide(TokenInterface $token, array $attributes, $object = null)
      */
     public function setVoters(array $voters)
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Pass voters to the decorated AccessDecisionManager instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Pass voters to the decorated AccessDecisionManager instead.', __METHOD__), E_USER_DEPRECATED);
 
         if (!method_exists($this->manager, 'setVoters')) {
             return;
diff --git a/src/Symfony/Component/Security/Core/Exception/NonceExpiredException.php b/src/Symfony/Component/Security/Core/Exception/NonceExpiredException.php
index bc03a03ac70d..9e748725da8b 100644
--- a/src/Symfony/Component/Security/Core/Exception/NonceExpiredException.php
+++ b/src/Symfony/Component/Security/Core/Exception/NonceExpiredException.php
@@ -11,7 +11,7 @@
 
 namespace Symfony\Component\Security\Core\Exception;
 
-@trigger_error(sprintf('The %s class and the whole HTTP digest authentication system is deprecated since 3.4 and will be removed in 4.0.', NonceExpiredException::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The %s class and the whole HTTP digest authentication system is deprecated since Symfony 3.4 and will be removed in 4.0.', NonceExpiredException::class), E_USER_DEPRECATED);
 
 /**
  * NonceExpiredException is thrown when an authentication is rejected because
diff --git a/src/Symfony/Component/Security/Core/LICENSE b/src/Symfony/Component/Security/Core/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/Security/Core/LICENSE
+++ b/src/Symfony/Component/Security/Core/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Security/Csrf/LICENSE b/src/Symfony/Component/Security/Csrf/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/Security/Csrf/LICENSE
+++ b/src/Symfony/Component/Security/Csrf/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Security/Guard/AbstractGuardAuthenticator.php b/src/Symfony/Component/Security/Guard/AbstractGuardAuthenticator.php
index a5e7ba7671fe..5196abcc1543 100644
--- a/src/Symfony/Component/Security/Guard/AbstractGuardAuthenticator.php
+++ b/src/Symfony/Component/Security/Guard/AbstractGuardAuthenticator.php
@@ -27,7 +27,7 @@ abstract class AbstractGuardAuthenticator implements AuthenticatorInterface
      */
     public function supports(Request $request)
     {
-        @trigger_error(sprintf('The "%s()" method is deprecated since version 3.4 and will be removed in 4.0. Implement the "%s::supports()" method in class "%s" instead.', __METHOD__, AuthenticatorInterface::class, get_class($this)), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 3.4 and will be removed in 4.0. Implement the "%s::supports()" method in class "%s" instead.', __METHOD__, AuthenticatorInterface::class, get_class($this)), E_USER_DEPRECATED);
 
         return true;
     }
diff --git a/src/Symfony/Component/Security/Guard/Firewall/GuardAuthenticationListener.php b/src/Symfony/Component/Security/Guard/Firewall/GuardAuthenticationListener.php
index 8f76470d2bbc..ec8375faff34 100644
--- a/src/Symfony/Component/Security/Guard/Firewall/GuardAuthenticationListener.php
+++ b/src/Symfony/Component/Security/Guard/Firewall/GuardAuthenticationListener.php
@@ -124,7 +124,7 @@ private function executeGuardAuthenticator($uniqueGuardKey, GuardAuthenticatorIn
                 }
 
                 if ($guardAuthenticator instanceof AbstractGuardAuthenticator) {
-                    @trigger_error(sprintf('Returning null from "%1$s::getCredentials()" is deprecated since version 3.4 and will throw an \UnexpectedValueException in 4.0. Return false from "%1$s::supports()" instead.', get_class($guardAuthenticator)), E_USER_DEPRECATED);
+                    @trigger_error(sprintf('Returning null from "%1$s::getCredentials()" is deprecated since Symfony 3.4 and will throw an \UnexpectedValueException in 4.0. Return false from "%1$s::supports()" instead.', get_class($guardAuthenticator)), E_USER_DEPRECATED);
 
                     return;
                 }
diff --git a/src/Symfony/Component/Security/Guard/LICENSE b/src/Symfony/Component/Security/Guard/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/Security/Guard/LICENSE
+++ b/src/Symfony/Component/Security/Guard/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Security/Guard/Tests/Firewall/GuardAuthenticationListenerTest.php b/src/Symfony/Component/Security/Guard/Tests/Firewall/GuardAuthenticationListenerTest.php
index 626b1cd4098e..0d5f2f2fe3fe 100644
--- a/src/Symfony/Component/Security/Guard/Tests/Firewall/GuardAuthenticationListenerTest.php
+++ b/src/Symfony/Component/Security/Guard/Tests/Firewall/GuardAuthenticationListenerTest.php
@@ -391,7 +391,7 @@ public function testReturnNullFromGetCredentials()
 
     /**
      * @group legacy
-     * @expectedDeprecation Returning null from "%s::getCredentials()" is deprecated since version 3.4 and will throw an \UnexpectedValueException in 4.0. Return false from "%s::supports()" instead.
+     * @expectedDeprecation Returning null from "%s::getCredentials()" is deprecated since Symfony 3.4 and will throw an \UnexpectedValueException in 4.0. Return false from "%s::supports()" instead.
      */
     public function testReturnNullFromGetCredentialsTriggersForAbstractGuardAuthenticatorInstances()
     {
diff --git a/src/Symfony/Component/Security/Http/EntryPoint/DigestAuthenticationEntryPoint.php b/src/Symfony/Component/Security/Http/EntryPoint/DigestAuthenticationEntryPoint.php
index 185426599187..7501a4ef8029 100644
--- a/src/Symfony/Component/Security/Http/EntryPoint/DigestAuthenticationEntryPoint.php
+++ b/src/Symfony/Component/Security/Http/EntryPoint/DigestAuthenticationEntryPoint.php
@@ -33,7 +33,7 @@ class DigestAuthenticationEntryPoint implements AuthenticationEntryPointInterfac
 
     public function __construct($realmName, $secret, $nonceValiditySeconds = 300, LoggerInterface $logger = null)
     {
-        @trigger_error(sprintf('The %s class and the whole HTTP digest authentication system is deprecated since 3.4 and will be removed in 4.0.', __CLASS__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s class and the whole HTTP digest authentication system is deprecated since Symfony 3.4 and will be removed in 4.0.', __CLASS__), E_USER_DEPRECATED);
 
         $this->realmName = $realmName;
         $this->secret = $secret;
diff --git a/src/Symfony/Component/Security/Http/Firewall/DigestAuthenticationListener.php b/src/Symfony/Component/Security/Http/Firewall/DigestAuthenticationListener.php
index 29ef2c97e13e..92f96c6034e1 100644
--- a/src/Symfony/Component/Security/Http/Firewall/DigestAuthenticationListener.php
+++ b/src/Symfony/Component/Security/Http/Firewall/DigestAuthenticationListener.php
@@ -41,7 +41,7 @@ class DigestAuthenticationListener implements ListenerInterface
 
     public function __construct(TokenStorageInterface $tokenStorage, UserProviderInterface $provider, $providerKey, DigestAuthenticationEntryPoint $authenticationEntryPoint, LoggerInterface $logger = null)
     {
-        @trigger_error(sprintf('The %s class and the whole HTTP digest authentication system is deprecated since 3.4 and will be removed in 4.0.', __CLASS__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s class and the whole HTTP digest authentication system is deprecated since Symfony 3.4 and will be removed in 4.0.', __CLASS__), E_USER_DEPRECATED);
 
         if (empty($providerKey)) {
             throw new \InvalidArgumentException('$providerKey must not be empty.');
@@ -150,7 +150,7 @@ class DigestData
 
     public function __construct($header)
     {
-        @trigger_error(sprintf('The %s class and the whole HTTP digest authentication system is deprecated since 3.4 and will be removed in 4.0.', __CLASS__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The %s class and the whole HTTP digest authentication system is deprecated since Symfony 3.4 and will be removed in 4.0.', __CLASS__), E_USER_DEPRECATED);
 
         $this->header = $header;
         preg_match_all('/(\w+)=("((?:[^"\\\\]|\\\\.)+)"|([^\s,$]+))/', $header, $matches, PREG_SET_ORDER);
diff --git a/src/Symfony/Component/Security/Http/LICENSE b/src/Symfony/Component/Security/Http/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/Security/Http/LICENSE
+++ b/src/Symfony/Component/Security/Http/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Security/Http/Logout/LogoutUrlGenerator.php b/src/Symfony/Component/Security/Http/Logout/LogoutUrlGenerator.php
index 11f492b59b08..503ceb7f3770 100644
--- a/src/Symfony/Component/Security/Http/Logout/LogoutUrlGenerator.php
+++ b/src/Symfony/Component/Security/Http/Logout/LogoutUrlGenerator.php
@@ -56,7 +56,7 @@ public function registerListener($key, $logoutPath, $csrfTokenId, $csrfParameter
             if (__CLASS__ !== get_class($this)) {
                 $r = new \ReflectionMethod($this, __FUNCTION__);
                 if (__CLASS__ !== $r->getDeclaringClass()->getName()) {
-                    @trigger_error(sprintf('Method %s() will have a sixth `string $context = null` argument in version 4.0. Not defining it is deprecated since 3.3.', __METHOD__), E_USER_DEPRECATED);
+                    @trigger_error(sprintf('Method %s() will have a sixth `string $context = null` argument in version 4.0. Not defining it is deprecated since Symfony 3.3.', __METHOD__), E_USER_DEPRECATED);
                 }
             }
 
diff --git a/src/Symfony/Component/Security/LICENSE b/src/Symfony/Component/Security/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/Security/LICENSE
+++ b/src/Symfony/Component/Security/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Serializer/LICENSE b/src/Symfony/Component/Serializer/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/Serializer/LICENSE
+++ b/src/Symfony/Component/Serializer/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Serializer/Mapping/Factory/ClassMetadataFactory.php b/src/Symfony/Component/Serializer/Mapping/Factory/ClassMetadataFactory.php
index 9335a5c49b57..294dfd9e3675 100644
--- a/src/Symfony/Component/Serializer/Mapping/Factory/ClassMetadataFactory.php
+++ b/src/Symfony/Component/Serializer/Mapping/Factory/ClassMetadataFactory.php
@@ -35,7 +35,7 @@ public function __construct(LoaderInterface $loader, Cache $cache = null)
         $this->cache = $cache;
 
         if (null !== $cache) {
-            @trigger_error(sprintf('Passing a Doctrine Cache instance as 2nd parameter of the "%s" constructor is deprecated since version 3.1. This parameter will be removed in Symfony 4.0. Use the "%s" class instead.', __CLASS__, CacheClassMetadataFactory::class), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Passing a Doctrine Cache instance as 2nd parameter of the "%s" constructor is deprecated since Symfony 3.1. This parameter will be removed in Symfony 4.0. Use the "%s" class instead.', __CLASS__, CacheClassMetadataFactory::class), E_USER_DEPRECATED);
         }
     }
 
diff --git a/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php
index dd4a9b35c6f2..3ccf48529f6b 100644
--- a/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php
@@ -315,7 +315,7 @@ protected function instantiateObject(array &$data, $class, array &$context, \Ref
             if (__CLASS__ !== get_class($this)) {
                 $r = new \ReflectionMethod($this, __FUNCTION__);
                 if (__CLASS__ !== $r->getDeclaringClass()->getName()) {
-                    @trigger_error(sprintf('Method %s::%s() will have a 6th `string $format = null` argument in version 4.0. Not defining it is deprecated since 3.2.', get_class($this), __FUNCTION__), E_USER_DEPRECATED);
+                    @trigger_error(sprintf('Method %s::%s() will have a 6th `string $format = null` argument in version 4.0. Not defining it is deprecated since Symfony 3.2.', get_class($this), __FUNCTION__), E_USER_DEPRECATED);
                 }
             }
 
diff --git a/src/Symfony/Component/Serializer/Normalizer/CustomNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/CustomNormalizer.php
index b56b10f2dcf7..6a15d8da9027 100644
--- a/src/Symfony/Component/Serializer/Normalizer/CustomNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/CustomNormalizer.php
@@ -57,7 +57,7 @@ public function supportsNormalization($data, $format = null)
     }
 
     /**
-     * Checks if the given class implements the NormalizableInterface.
+     * Checks if the given class implements the DenormalizableInterface.
      *
      * @param mixed  $data   Data to denormalize from
      * @param string $type   The class to which the data should be denormalized
diff --git a/src/Symfony/Component/Serializer/Serializer.php b/src/Symfony/Component/Serializer/Serializer.php
index 9571dac88ad3..8a689dc61d07 100644
--- a/src/Symfony/Component/Serializer/Serializer.php
+++ b/src/Symfony/Component/Serializer/Serializer.php
@@ -196,7 +196,7 @@ public function supportsNormalization($data, $format = null/*, array $context =
             if (__CLASS__ !== get_class($this)) {
                 $r = new \ReflectionMethod($this, __FUNCTION__);
                 if (__CLASS__ !== $r->getDeclaringClass()->getName()) {
-                    @trigger_error(sprintf('Method %s() will have a third `$context = array()` argument in version 4.0. Not defining it is deprecated since 3.3.', __METHOD__), E_USER_DEPRECATED);
+                    @trigger_error(sprintf('Method %s() will have a third `$context = array()` argument in version 4.0. Not defining it is deprecated since Symfony 3.3.', __METHOD__), E_USER_DEPRECATED);
                 }
             }
 
@@ -217,7 +217,7 @@ public function supportsDenormalization($data, $type, $format = null/*, array $c
             if (__CLASS__ !== get_class($this)) {
                 $r = new \ReflectionMethod($this, __FUNCTION__);
                 if (__CLASS__ !== $r->getDeclaringClass()->getName()) {
-                    @trigger_error(sprintf('Method %s() will have a fourth `$context = array()` argument in version 4.0. Not defining it is deprecated since 3.3.', __METHOD__), E_USER_DEPRECATED);
+                    @trigger_error(sprintf('Method %s() will have a fourth `$context = array()` argument in version 4.0. Not defining it is deprecated since Symfony 3.3.', __METHOD__), E_USER_DEPRECATED);
                 }
             }
 
@@ -291,7 +291,7 @@ public function supportsEncoding($format/*, array $context = array()*/)
             if (__CLASS__ !== get_class($this)) {
                 $r = new \ReflectionMethod($this, __FUNCTION__);
                 if (__CLASS__ !== $r->getDeclaringClass()->getName()) {
-                    @trigger_error(sprintf('Method %s() will have a second `$context = array()` argument in version 4.0. Not defining it is deprecated since 3.3.', __METHOD__), E_USER_DEPRECATED);
+                    @trigger_error(sprintf('Method %s() will have a second `$context = array()` argument in version 4.0. Not defining it is deprecated since Symfony 3.3.', __METHOD__), E_USER_DEPRECATED);
                 }
             }
 
@@ -312,7 +312,7 @@ public function supportsDecoding($format/*, array $context = array()*/)
             if (__CLASS__ !== get_class($this)) {
                 $r = new \ReflectionMethod($this, __FUNCTION__);
                 if (__CLASS__ !== $r->getDeclaringClass()->getName()) {
-                    @trigger_error(sprintf('Method %s() will have a second `$context = array()` argument in version 4.0. Not defining it is deprecated since 3.3.', __METHOD__), E_USER_DEPRECATED);
+                    @trigger_error(sprintf('Method %s() will have a second `$context = array()` argument in version 4.0. Not defining it is deprecated since Symfony 3.3.', __METHOD__), E_USER_DEPRECATED);
                 }
             }
 
diff --git a/src/Symfony/Component/Stopwatch/LICENSE b/src/Symfony/Component/Stopwatch/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/Stopwatch/LICENSE
+++ b/src/Symfony/Component/Stopwatch/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Templating/LICENSE b/src/Symfony/Component/Templating/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/Templating/LICENSE
+++ b/src/Symfony/Component/Templating/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Translation/Dumper/FileDumper.php b/src/Symfony/Component/Translation/Dumper/FileDumper.php
index b2b50cfc9470..7296d8ccd939 100644
--- a/src/Symfony/Component/Translation/Dumper/FileDumper.php
+++ b/src/Symfony/Component/Translation/Dumper/FileDumper.php
@@ -75,7 +75,7 @@ public function dump(MessageCatalogue $messages, $options = array())
             $fullpath = $options['path'].'/'.$this->getRelativePath($domain, $messages->getLocale());
             if (file_exists($fullpath)) {
                 if ($this->backup) {
-                    @trigger_error('Creating a backup while dumping a message catalogue is deprecated since version 3.1 and will be removed in 4.0. Use TranslationWriter::disableBackup() to disable the backup.', E_USER_DEPRECATED);
+                    @trigger_error('Creating a backup while dumping a message catalogue is deprecated since Symfony 3.1 and will be removed in 4.0. Use TranslationWriter::disableBackup() to disable the backup.', E_USER_DEPRECATED);
                     copy($fullpath, $fullpath.'~');
                 }
             } else {
diff --git a/src/Symfony/Component/Translation/LICENSE b/src/Symfony/Component/Translation/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/Translation/LICENSE
+++ b/src/Symfony/Component/Translation/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Translation/Tests/Writer/TranslationWriterTest.php b/src/Symfony/Component/Translation/Tests/Writer/TranslationWriterTest.php
index 5d31cd17eddc..8837553d5680 100644
--- a/src/Symfony/Component/Translation/Tests/Writer/TranslationWriterTest.php
+++ b/src/Symfony/Component/Translation/Tests/Writer/TranslationWriterTest.php
@@ -20,7 +20,7 @@ class TranslationWriterTest extends TestCase
 {
     /**
      * @group legacy
-     * @expectedDeprecation Method Symfony\Component\Translation\Writer\TranslationWriter::writeTranslations() is deprecated since version 3.4 and will be removed in 4.0. Use write() instead.
+     * @expectedDeprecation Method Symfony\Component\Translation\Writer\TranslationWriter::writeTranslations() is deprecated since Symfony 3.4 and will be removed in 4.0. Use write() instead.
      */
     public function testWriteTranslations()
     {
diff --git a/src/Symfony/Component/Translation/Translator.php b/src/Symfony/Component/Translation/Translator.php
index 6d70a7e38719..411eec7167ff 100644
--- a/src/Symfony/Component/Translation/Translator.php
+++ b/src/Symfony/Component/Translation/Translator.php
@@ -87,7 +87,7 @@ public function __construct($locale, $formatter = null, $cacheDir = null, $debug
 
         if ($formatter instanceof MessageSelector) {
             $formatter = new MessageFormatter($formatter);
-            @trigger_error(sprintf('Passing a "%s" instance into the "%s" as a second argument is deprecated since version 3.4 and will be removed in 4.0. Inject a "%s" implementation instead.', MessageSelector::class, __METHOD__, MessageFormatterInterface::class), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Passing a "%s" instance into the "%s" as a second argument is deprecated since Symfony 3.4 and will be removed in 4.0. Inject a "%s" implementation instead.', MessageSelector::class, __METHOD__, MessageFormatterInterface::class), E_USER_DEPRECATED);
         } elseif (null === $formatter) {
             $formatter = new MessageFormatter();
         }
diff --git a/src/Symfony/Component/Translation/Writer/TranslationWriter.php b/src/Symfony/Component/Translation/Writer/TranslationWriter.php
index dcccc397007e..5ff5cd855dfa 100644
--- a/src/Symfony/Component/Translation/Writer/TranslationWriter.php
+++ b/src/Symfony/Component/Translation/Writer/TranslationWriter.php
@@ -97,7 +97,7 @@ public function write(MessageCatalogue $catalogue, $format, $options = array())
      */
     public function writeTranslations(MessageCatalogue $catalogue, $format, $options = array())
     {
-        @trigger_error(sprintf('Method %s() is deprecated since version 3.4 and will be removed in 4.0. Use write() instead.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('Method %s() is deprecated since Symfony 3.4 and will be removed in 4.0. Use write() instead.', __METHOD__), E_USER_DEPRECATED);
         $this->write($catalogue, $format, $options);
     }
 }
diff --git a/src/Symfony/Component/Validator/Constraints/ChoiceValidator.php b/src/Symfony/Component/Validator/Constraints/ChoiceValidator.php
index 63c96f17b852..43fecb1137fd 100644
--- a/src/Symfony/Component/Validator/Constraints/ChoiceValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/ChoiceValidator.php
@@ -59,7 +59,7 @@ public function validate($value, Constraint $constraint)
         }
 
         if (true !== $constraint->strict) {
-            @trigger_error('Not setting the strict option of the Choice constraint to true is deprecated since version 3.4 and will throw an exception in 4.0.', E_USER_DEPRECATED);
+            @trigger_error('Not setting the strict option of the Choice constraint to true is deprecated since Symfony 3.4 and will throw an exception in 4.0.', E_USER_DEPRECATED);
         }
 
         if ($constraint->multiple) {
diff --git a/src/Symfony/Component/Validator/LICENSE b/src/Symfony/Component/Validator/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/Validator/LICENSE
+++ b/src/Symfony/Component/Validator/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Validator/Tests/Validator/AbstractTest.php b/src/Symfony/Component/Validator/Tests/Validator/AbstractTest.php
index 0480a5463283..6587dae13955 100644
--- a/src/Symfony/Component/Validator/Tests/Validator/AbstractTest.php
+++ b/src/Symfony/Component/Validator/Tests/Validator/AbstractTest.php
@@ -13,6 +13,7 @@
 
 use Symfony\Component\Validator\Constraints\Callback;
 use Symfony\Component\Validator\Constraints\Collection;
+use Symfony\Component\Validator\Constraints\Expression;
 use Symfony\Component\Validator\Constraints\GroupSequence;
 use Symfony\Component\Validator\Constraints\NotBlank;
 use Symfony\Component\Validator\Constraints\NotNull;
@@ -581,6 +582,7 @@ public function testAccessCurrentObject()
         $called = false;
         $entity = new Entity();
         $entity->firstName = 'Bernhard';
+        $entity->data = array('firstName' => 'Bernhard');
 
         $callback = function ($value, ExecutionContextInterface $context) use ($entity, &$called) {
             $called = true;
@@ -589,6 +591,7 @@ public function testAccessCurrentObject()
 
         $this->metadata->addConstraint(new Callback($callback));
         $this->metadata->addPropertyConstraint('firstName', new Callback($callback));
+        $this->metadata->addPropertyConstraint('data', new Collection(array('firstName' => new Expression('value == this.firstName'))));
 
         $this->validator->validate($entity);
 
diff --git a/src/Symfony/Component/Validator/Validator/RecursiveContextualValidator.php b/src/Symfony/Component/Validator/Validator/RecursiveContextualValidator.php
index ca3e57a75266..d1166ad913d6 100644
--- a/src/Symfony/Component/Validator/Validator/RecursiveContextualValidator.php
+++ b/src/Symfony/Component/Validator/Validator/RecursiveContextualValidator.php
@@ -108,7 +108,7 @@ public function validate($value, $constraints = null, $groups = null)
 
             $this->validateGenericNode(
                 $value,
-                null,
+                $previousObject,
                 is_object($value) ? spl_object_hash($value) : null,
                 $metadata,
                 $this->defaultPropertyPath,
diff --git a/src/Symfony/Component/VarDumper/Caster/Caster.php b/src/Symfony/Component/VarDumper/Caster/Caster.php
index 5fdae442dcda..2676fb78bf0b 100644
--- a/src/Symfony/Component/VarDumper/Caster/Caster.php
+++ b/src/Symfony/Component/VarDumper/Caster/Caster.php
@@ -49,7 +49,7 @@ class Caster
     public static function castObject($obj, $class, $hasDebugInfo = false)
     {
         if ($class instanceof \ReflectionClass) {
-            @trigger_error(sprintf('Passing a ReflectionClass to %s() is deprecated since version 3.3 and will be unsupported in 4.0. Pass the class name as string instead.', __METHOD__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('Passing a ReflectionClass to %s() is deprecated since Symfony 3.3 and will be unsupported in 4.0. Pass the class name as string instead.', __METHOD__), E_USER_DEPRECATED);
             $hasDebugInfo = $class->hasMethod('__debugInfo');
             $class = $class->name;
         }
diff --git a/src/Symfony/Component/VarDumper/Caster/MongoCaster.php b/src/Symfony/Component/VarDumper/Caster/MongoCaster.php
index 2219386bc243..3b8fb338e5bf 100644
--- a/src/Symfony/Component/VarDumper/Caster/MongoCaster.php
+++ b/src/Symfony/Component/VarDumper/Caster/MongoCaster.php
@@ -13,7 +13,7 @@
 
 use Symfony\Component\VarDumper\Cloner\Stub;
 
-@trigger_error('The '.__NAMESPACE__.'\MongoCaster class is deprecated since version 3.4 and will be removed in 4.0.', E_USER_DEPRECATED);
+@trigger_error('The '.__NAMESPACE__.'\MongoCaster class is deprecated since Symfony 3.4 and will be removed in 4.0.', E_USER_DEPRECATED);
 
 /**
  * Casts classes from the MongoDb extension to array representation.
diff --git a/src/Symfony/Component/VarDumper/Cloner/AbstractCloner.php b/src/Symfony/Component/VarDumper/Cloner/AbstractCloner.php
index 5e0a0b153138..e3246927001a 100644
--- a/src/Symfony/Component/VarDumper/Cloner/AbstractCloner.php
+++ b/src/Symfony/Component/VarDumper/Cloner/AbstractCloner.php
@@ -212,7 +212,7 @@ public function setMinDepth($minDepth)
      */
     public function cloneVar($var, $filter = 0)
     {
-        $this->prevErrorHandler = set_error_handler(function ($type, $msg, $file, $line, $context) {
+        $this->prevErrorHandler = set_error_handler(function ($type, $msg, $file, $line, $context = array()) {
             if (E_RECOVERABLE_ERROR === $type || E_USER_ERROR === $type) {
                 // Cloner never dies
                 throw new \ErrorException($msg, 0, $type, $file, $line);
diff --git a/src/Symfony/Component/VarDumper/Cloner/Data.php b/src/Symfony/Component/VarDumper/Cloner/Data.php
index 2d6373f7e323..4353bcb43748 100644
--- a/src/Symfony/Component/VarDumper/Cloner/Data.php
+++ b/src/Symfony/Component/VarDumper/Cloner/Data.php
@@ -172,7 +172,7 @@ public function __toString()
      */
     public function getRawData()
     {
-        @trigger_error(sprintf('The %s() method is deprecated since version 3.3 and will be removed in 4.0. Use the array or object access instead.', __METHOD__));
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the array or object access instead.', __METHOD__));
 
         return $this->data;
     }
diff --git a/src/Symfony/Component/VarDumper/LICENSE b/src/Symfony/Component/VarDumper/LICENSE
index 207646a052dc..15fc1c88d330 100644
--- a/src/Symfony/Component/VarDumper/LICENSE
+++ b/src/Symfony/Component/VarDumper/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2014-2017 Fabien Potencier
+Copyright (c) 2014-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/VarDumper/Test/VarDumperTestTrait.php b/src/Symfony/Component/VarDumper/Test/VarDumperTestTrait.php
index dad06a653c34..0fffd5512221 100644
--- a/src/Symfony/Component/VarDumper/Test/VarDumperTestTrait.php
+++ b/src/Symfony/Component/VarDumper/Test/VarDumperTestTrait.php
@@ -22,7 +22,7 @@ trait VarDumperTestTrait
     public function assertDumpEquals($dump, $data, $filter = 0, $message = '')
     {
         if (is_string($filter)) {
-            @trigger_error(sprintf('The $message argument of the "%s()" method at 3rd position is deprecated since version 3.4 and will be moved at 4th position in 4.0.', __METHOD__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('The $message argument of the "%s()" method at 3rd position is deprecated since Symfony 3.4 and will be moved at 4th position in 4.0.', __METHOD__), E_USER_DEPRECATED);
             $message = $filter;
             $filter = 0;
         }
@@ -33,7 +33,7 @@ public function assertDumpEquals($dump, $data, $filter = 0, $message = '')
     public function assertDumpMatchesFormat($dump, $data, $filter = 0, $message = '')
     {
         if (is_string($filter)) {
-            @trigger_error(sprintf('The $message argument of the "%s()" method at 3rd position is deprecated since version 3.4 and will be moved at 4th position in 4.0.', __METHOD__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('The $message argument of the "%s()" method at 3rd position is deprecated since Symfony 3.4 and will be moved at 4th position in 4.0.', __METHOD__), E_USER_DEPRECATED);
             $message = $filter;
             $filter = 0;
         }
diff --git a/src/Symfony/Component/VarDumper/VarDumper.php b/src/Symfony/Component/VarDumper/VarDumper.php
index 8c610c5d33b8..9236a3d3d12d 100644
--- a/src/Symfony/Component/VarDumper/VarDumper.php
+++ b/src/Symfony/Component/VarDumper/VarDumper.php
@@ -29,7 +29,7 @@ public static function dump($var)
     {
         if (null === self::$handler) {
             $cloner = new VarCloner();
-            $dumper = 'cli' === PHP_SAPI ? new CliDumper() : new HtmlDumper();
+            $dumper = in_array(PHP_SAPI, array('cli', 'phpdbg')) ? new CliDumper() : new HtmlDumper();
             self::$handler = function ($var) use ($cloner, $dumper) {
                 $dumper->dump($cloner->cloneVar($var));
             };
diff --git a/src/Symfony/Component/WebLink/LICENSE b/src/Symfony/Component/WebLink/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/WebLink/LICENSE
+++ b/src/Symfony/Component/WebLink/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Workflow/LICENSE b/src/Symfony/Component/Workflow/LICENSE
index 207646a052dc..15fc1c88d330 100644
--- a/src/Symfony/Component/Workflow/LICENSE
+++ b/src/Symfony/Component/Workflow/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2014-2017 Fabien Potencier
+Copyright (c) 2014-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Workflow/Tests/DependencyInjection/ValidateWorkflowsPassTest.php b/src/Symfony/Component/Workflow/Tests/DependencyInjection/ValidateWorkflowsPassTest.php
index 3b7ddf6d6d7a..d728cc119557 100644
--- a/src/Symfony/Component/Workflow/Tests/DependencyInjection/ValidateWorkflowsPassTest.php
+++ b/src/Symfony/Component/Workflow/Tests/DependencyInjection/ValidateWorkflowsPassTest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace Symfony\Component\Workflow\Tests;
+namespace Symfony\Component\Workflow\Tests\DependencyInjection;
 
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
diff --git a/src/Symfony/Component/Yaml/Dumper.php b/src/Symfony/Component/Yaml/Dumper.php
index 427f1a7b0f7d..a87201e0fdc3 100644
--- a/src/Symfony/Component/Yaml/Dumper.php
+++ b/src/Symfony/Component/Yaml/Dumper.php
@@ -48,7 +48,7 @@ public function __construct($indentation = 4)
      */
     public function setIndentation($num)
     {
-        @trigger_error('The '.__METHOD__.' method is deprecated since version 3.1 and will be removed in 4.0. Pass the indentation to the constructor instead.', E_USER_DEPRECATED);
+        @trigger_error('The '.__METHOD__.' method is deprecated since Symfony 3.1 and will be removed in 4.0. Pass the indentation to the constructor instead.', E_USER_DEPRECATED);
 
         $this->indentation = (int) $num;
     }
@@ -66,7 +66,7 @@ public function setIndentation($num)
     public function dump($input, $inline = 0, $indent = 0, $flags = 0)
     {
         if (is_bool($flags)) {
-            @trigger_error('Passing a boolean flag to toggle exception handling is deprecated since version 3.1 and will be removed in 4.0. Use the Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE flag instead.', E_USER_DEPRECATED);
+            @trigger_error('Passing a boolean flag to toggle exception handling is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE flag instead.', E_USER_DEPRECATED);
 
             if ($flags) {
                 $flags = Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE;
@@ -76,7 +76,7 @@ public function dump($input, $inline = 0, $indent = 0, $flags = 0)
         }
 
         if (func_num_args() >= 5) {
-            @trigger_error('Passing a boolean flag to toggle object support is deprecated since version 3.1 and will be removed in 4.0. Use the Yaml::DUMP_OBJECT flag instead.', E_USER_DEPRECATED);
+            @trigger_error('Passing a boolean flag to toggle object support is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::DUMP_OBJECT flag instead.', E_USER_DEPRECATED);
 
             if (func_get_arg(4)) {
                 $flags |= Yaml::DUMP_OBJECT;
diff --git a/src/Symfony/Component/Yaml/Inline.php b/src/Symfony/Component/Yaml/Inline.php
index c8ded6d21ca5..5e9f82503714 100644
--- a/src/Symfony/Component/Yaml/Inline.php
+++ b/src/Symfony/Component/Yaml/Inline.php
@@ -66,7 +66,7 @@ public static function initialize($flags, $parsedLineNumber = null, $parsedFilen
     public static function parse($value, $flags = 0, $references = array())
     {
         if (is_bool($flags)) {
-            @trigger_error('Passing a boolean flag to toggle exception handling is deprecated since version 3.1 and will be removed in 4.0. Use the Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE flag instead.', E_USER_DEPRECATED);
+            @trigger_error('Passing a boolean flag to toggle exception handling is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE flag instead.', E_USER_DEPRECATED);
 
             if ($flags) {
                 $flags = Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE;
@@ -76,14 +76,14 @@ public static function parse($value, $flags = 0, $references = array())
         }
 
         if (func_num_args() >= 3 && !is_array($references)) {
-            @trigger_error('Passing a boolean flag to toggle object support is deprecated since version 3.1 and will be removed in 4.0. Use the Yaml::PARSE_OBJECT flag instead.', E_USER_DEPRECATED);
+            @trigger_error('Passing a boolean flag to toggle object support is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::PARSE_OBJECT flag instead.', E_USER_DEPRECATED);
 
             if ($references) {
                 $flags |= Yaml::PARSE_OBJECT;
             }
 
             if (func_num_args() >= 4) {
-                @trigger_error('Passing a boolean flag to toggle object for map support is deprecated since version 3.1 and will be removed in 4.0. Use the Yaml::PARSE_OBJECT_FOR_MAP flag instead.', E_USER_DEPRECATED);
+                @trigger_error('Passing a boolean flag to toggle object for map support is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::PARSE_OBJECT_FOR_MAP flag instead.', E_USER_DEPRECATED);
 
                 if (func_get_arg(3)) {
                     $flags |= Yaml::PARSE_OBJECT_FOR_MAP;
@@ -154,7 +154,7 @@ public static function parse($value, $flags = 0, $references = array())
     public static function dump($value, $flags = 0)
     {
         if (is_bool($flags)) {
-            @trigger_error('Passing a boolean flag to toggle exception handling is deprecated since version 3.1 and will be removed in 4.0. Use the Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE flag instead.', E_USER_DEPRECATED);
+            @trigger_error('Passing a boolean flag to toggle exception handling is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE flag instead.', E_USER_DEPRECATED);
 
             if ($flags) {
                 $flags = Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE;
@@ -164,7 +164,7 @@ public static function dump($value, $flags = 0)
         }
 
         if (func_num_args() >= 3) {
-            @trigger_error('Passing a boolean flag to toggle object support is deprecated since version 3.1 and will be removed in 4.0. Use the Yaml::DUMP_OBJECT flag instead.', E_USER_DEPRECATED);
+            @trigger_error('Passing a boolean flag to toggle object support is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::DUMP_OBJECT flag instead.', E_USER_DEPRECATED);
 
             if (func_get_arg(2)) {
                 $flags |= Yaml::DUMP_OBJECT;
@@ -511,12 +511,12 @@ private static function parseMapping($mapping, $flags, &$i = 0, $references = ar
                 $evaluatedKey = self::evaluateScalar($key, $flags, $references);
 
                 if ('' !== $key && $evaluatedKey !== $key && !is_string($evaluatedKey) && !is_int($evaluatedKey)) {
-                    @trigger_error(self::getDeprecationMessage('Implicit casting of incompatible mapping keys to strings is deprecated since version 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0. Quote your evaluable mapping keys instead.'), E_USER_DEPRECATED);
+                    @trigger_error(self::getDeprecationMessage('Implicit casting of incompatible mapping keys to strings is deprecated since Symfony 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0. Quote your evaluable mapping keys instead.'), E_USER_DEPRECATED);
                 }
             }
 
             if (':' !== $key && !$isKeyQuoted && (!isset($mapping[$i + 1]) || !in_array($mapping[$i + 1], array(' ', ',', '[', ']', '{', '}'), true))) {
-                @trigger_error(self::getDeprecationMessage('Using a colon after an unquoted mapping key that is not followed by an indication character (i.e. " ", ",", "[", "]", "{", "}") is deprecated since version 3.2 and will throw a ParseException in 4.0.'), E_USER_DEPRECATED);
+                @trigger_error(self::getDeprecationMessage('Using a colon after an unquoted mapping key that is not followed by an indication character (i.e. " ", ",", "[", "]", "{", "}") is deprecated since Symfony 3.2 and will throw a ParseException in 4.0.'), E_USER_DEPRECATED);
             }
 
             if ('<<' === $key) {
@@ -550,7 +550,7 @@ private static function parseMapping($mapping, $flags, &$i = 0, $references = ar
                                 $output[$key] = $value;
                             }
                         } elseif (isset($output[$key])) {
-                            @trigger_error(self::getDeprecationMessage(sprintf('Duplicate key "%s" detected whilst parsing YAML. Silent handling of duplicate mapping keys in YAML is deprecated since version 3.2 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.', $key)), E_USER_DEPRECATED);
+                            @trigger_error(self::getDeprecationMessage(sprintf('Duplicate key "%s" detected whilst parsing YAML. Silent handling of duplicate mapping keys in YAML is deprecated since Symfony 3.2 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.', $key)), E_USER_DEPRECATED);
                         }
                         break;
                     case '{':
@@ -569,7 +569,7 @@ private static function parseMapping($mapping, $flags, &$i = 0, $references = ar
                                 $output[$key] = $value;
                             }
                         } elseif (isset($output[$key])) {
-                            @trigger_error(self::getDeprecationMessage(sprintf('Duplicate key "%s" detected whilst parsing YAML. Silent handling of duplicate mapping keys in YAML is deprecated since version 3.2 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.', $key)), E_USER_DEPRECATED);
+                            @trigger_error(self::getDeprecationMessage(sprintf('Duplicate key "%s" detected whilst parsing YAML. Silent handling of duplicate mapping keys in YAML is deprecated since Symfony 3.2 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.', $key)), E_USER_DEPRECATED);
                         }
                         break;
                     default:
@@ -587,7 +587,7 @@ private static function parseMapping($mapping, $flags, &$i = 0, $references = ar
                                 $output[$key] = $value;
                             }
                         } elseif (isset($output[$key])) {
-                            @trigger_error(self::getDeprecationMessage(sprintf('Duplicate key "%s" detected whilst parsing YAML. Silent handling of duplicate mapping keys in YAML is deprecated since version 3.2 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.', $key)), E_USER_DEPRECATED);
+                            @trigger_error(self::getDeprecationMessage(sprintf('Duplicate key "%s" detected whilst parsing YAML. Silent handling of duplicate mapping keys in YAML is deprecated since Symfony 3.2 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.', $key)), E_USER_DEPRECATED);
                         }
                         --$i;
                 }
@@ -647,18 +647,18 @@ private static function evaluateScalar($scalar, $flags, $references = array())
             case '!' === $scalar[0]:
                 switch (true) {
                     case 0 === strpos($scalar, '!str'):
-                        @trigger_error(self::getDeprecationMessage('Support for the !str tag is deprecated since version 3.4. Use the !!str tag instead.'), E_USER_DEPRECATED);
+                        @trigger_error(self::getDeprecationMessage('Support for the !str tag is deprecated since Symfony 3.4. Use the !!str tag instead.'), E_USER_DEPRECATED);
 
                         return (string) substr($scalar, 5);
                     case 0 === strpos($scalar, '!!str '):
                         return (string) substr($scalar, 6);
                     case 0 === strpos($scalar, '! '):
-                        @trigger_error(self::getDeprecationMessage('Using the non-specific tag "!" is deprecated since version 3.4 as its behavior will change in 4.0. It will force non-evaluating your values in 4.0. Use plain integers or !!float instead.'), E_USER_DEPRECATED);
+                        @trigger_error(self::getDeprecationMessage('Using the non-specific tag "!" is deprecated since Symfony 3.4 as its behavior will change in 4.0. It will force non-evaluating your values in 4.0. Use plain integers or !!float instead.'), E_USER_DEPRECATED);
 
                         return (int) self::parseScalar(substr($scalar, 2), $flags);
                     case 0 === strpos($scalar, '!php/object:'):
                         if (self::$objectSupport) {
-                            @trigger_error(self::getDeprecationMessage('The !php/object: tag to indicate dumped PHP objects is deprecated since version 3.4 and will be removed in 4.0. Use the !php/object (without the colon) tag instead.'), E_USER_DEPRECATED);
+                            @trigger_error(self::getDeprecationMessage('The !php/object: tag to indicate dumped PHP objects is deprecated since Symfony 3.4 and will be removed in 4.0. Use the !php/object (without the colon) tag instead.'), E_USER_DEPRECATED);
 
                             return unserialize(substr($scalar, 12));
                         }
@@ -670,7 +670,7 @@ private static function evaluateScalar($scalar, $flags, $references = array())
                         return;
                     case 0 === strpos($scalar, '!!php/object:'):
                         if (self::$objectSupport) {
-                            @trigger_error(self::getDeprecationMessage('The !!php/object: tag to indicate dumped PHP objects is deprecated since version 3.1 and will be removed in 4.0. Use the !php/object (without the colon) tag instead.'), E_USER_DEPRECATED);
+                            @trigger_error(self::getDeprecationMessage('The !!php/object: tag to indicate dumped PHP objects is deprecated since Symfony 3.1 and will be removed in 4.0. Use the !php/object (without the colon) tag instead.'), E_USER_DEPRECATED);
 
                             return unserialize(substr($scalar, 13));
                         }
@@ -692,7 +692,7 @@ private static function evaluateScalar($scalar, $flags, $references = array())
                         return;
                     case 0 === strpos($scalar, '!php/const:'):
                         if (self::$constantSupport) {
-                            @trigger_error(self::getDeprecationMessage('The !php/const: tag to indicate dumped PHP constants is deprecated since version 3.4 and will be removed in 4.0. Use the !php/const (without the colon) tag instead.'), E_USER_DEPRECATED);
+                            @trigger_error(self::getDeprecationMessage('The !php/const: tag to indicate dumped PHP constants is deprecated since Symfony 3.4 and will be removed in 4.0. Use the !php/const (without the colon) tag instead.'), E_USER_DEPRECATED);
 
                             if (defined($const = substr($scalar, 11))) {
                                 return constant($const);
@@ -724,7 +724,7 @@ private static function evaluateScalar($scalar, $flags, $references = array())
                     case 0 === strpos($scalar, '!!binary '):
                         return self::evaluateBinaryScalar(substr($scalar, 9));
                     default:
-                        @trigger_error(self::getDeprecationMessage(sprintf('Using the unquoted scalar value "%s" is deprecated since version 3.3 and will be considered as a tagged value in 4.0. You must quote it.', $scalar)), E_USER_DEPRECATED);
+                        @trigger_error(self::getDeprecationMessage(sprintf('Using the unquoted scalar value "%s" is deprecated since Symfony 3.3 and will be considered as a tagged value in 4.0. You must quote it.', $scalar)), E_USER_DEPRECATED);
                 }
 
             // Optimize for returning strings.
@@ -758,7 +758,7 @@ private static function evaluateScalar($scalar, $flags, $references = array())
                     case Parser::preg_match('/^(-|\+)?[0-9][0-9,]*(\.[0-9_]+)?$/', $scalar):
                     case Parser::preg_match('/^(-|\+)?[0-9][0-9_]*(\.[0-9_]+)?$/', $scalar):
                         if (false !== strpos($scalar, ',')) {
-                            @trigger_error(self::getDeprecationMessage('Using the comma as a group separator for floats is deprecated since version 3.2 and will be removed in 4.0.'), E_USER_DEPRECATED);
+                            @trigger_error(self::getDeprecationMessage('Using the comma as a group separator for floats is deprecated since Symfony 3.2 and will be removed in 4.0.'), E_USER_DEPRECATED);
                         }
 
                         return (float) str_replace(array(',', '_'), '', $scalar);
diff --git a/src/Symfony/Component/Yaml/LICENSE b/src/Symfony/Component/Yaml/LICENSE
index 17d16a13367d..21d7fb9e2f29 100644
--- a/src/Symfony/Component/Yaml/LICENSE
+++ b/src/Symfony/Component/Yaml/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2017 Fabien Potencier
+Copyright (c) 2004-2018 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/src/Symfony/Component/Yaml/Parser.php b/src/Symfony/Component/Yaml/Parser.php
index 57d95c1ca8ee..e7c3ddbd5700 100644
--- a/src/Symfony/Component/Yaml/Parser.php
+++ b/src/Symfony/Component/Yaml/Parser.php
@@ -93,7 +93,7 @@ public function parseFile($filename, $flags = 0)
     public function parse($value, $flags = 0)
     {
         if (is_bool($flags)) {
-            @trigger_error('Passing a boolean flag to toggle exception handling is deprecated since version 3.1 and will be removed in 4.0. Use the Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE flag instead.', E_USER_DEPRECATED);
+            @trigger_error('Passing a boolean flag to toggle exception handling is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE flag instead.', E_USER_DEPRECATED);
 
             if ($flags) {
                 $flags = Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE;
@@ -103,7 +103,7 @@ public function parse($value, $flags = 0)
         }
 
         if (func_num_args() >= 3) {
-            @trigger_error('Passing a boolean flag to toggle object support is deprecated since version 3.1 and will be removed in 4.0. Use the Yaml::PARSE_OBJECT flag instead.', E_USER_DEPRECATED);
+            @trigger_error('Passing a boolean flag to toggle object support is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::PARSE_OBJECT flag instead.', E_USER_DEPRECATED);
 
             if (func_get_arg(2)) {
                 $flags |= Yaml::PARSE_OBJECT;
@@ -111,7 +111,7 @@ public function parse($value, $flags = 0)
         }
 
         if (func_num_args() >= 4) {
-            @trigger_error('Passing a boolean flag to toggle object for map support is deprecated since version 3.1 and will be removed in 4.0. Use the Yaml::PARSE_OBJECT_FOR_MAP flag instead.', E_USER_DEPRECATED);
+            @trigger_error('Passing a boolean flag to toggle object for map support is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::PARSE_OBJECT_FOR_MAP flag instead.', E_USER_DEPRECATED);
 
             if (func_get_arg(3)) {
                 $flags |= Yaml::PARSE_OBJECT_FOR_MAP;
@@ -119,7 +119,7 @@ public function parse($value, $flags = 0)
         }
 
         if (Yaml::PARSE_KEYS_AS_STRINGS & $flags) {
-            @trigger_error('Using the Yaml::PARSE_KEYS_AS_STRINGS flag is deprecated since version 3.4 as it will be removed in 4.0. Quote your keys when they are evaluable instead.', E_USER_DEPRECATED);
+            @trigger_error('Using the Yaml::PARSE_KEYS_AS_STRINGS flag is deprecated since Symfony 3.4 as it will be removed in 4.0. Quote your keys when they are evaluable instead.', E_USER_DEPRECATED);
         }
 
         if (false === preg_match('//u', $value)) {
@@ -216,7 +216,7 @@ private function doParse($value, $flags)
                 }
 
                 if (isset($values['value'][1]) && '?' === $values['value'][0] && ' ' === $values['value'][1]) {
-                    @trigger_error($this->getDeprecationMessage('Starting an unquoted string with a question mark followed by a space is deprecated since version 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.'), E_USER_DEPRECATED);
+                    @trigger_error($this->getDeprecationMessage('Starting an unquoted string with a question mark followed by a space is deprecated since Symfony 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.'), E_USER_DEPRECATED);
                 }
 
                 // array
@@ -273,7 +273,7 @@ private function doParse($value, $flags)
 
                 if (!is_string($key) && !is_int($key)) {
                     $keyType = is_numeric($key) ? 'numeric key' : 'non-string key';
-                    @trigger_error($this->getDeprecationMessage(sprintf('Implicit casting of %s to string is deprecated since version 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0. Quote your evaluable mapping keys instead.', $keyType)), E_USER_DEPRECATED);
+                    @trigger_error($this->getDeprecationMessage(sprintf('Implicit casting of %s to string is deprecated since Symfony 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0. Quote your evaluable mapping keys instead.', $keyType)), E_USER_DEPRECATED);
                 }
 
                 // Convert float keys to strings, to avoid being converted to integers by PHP
@@ -359,7 +359,7 @@ private function doParse($value, $flags)
                                 $data[$key] = null;
                             }
                         } else {
-                            @trigger_error($this->getDeprecationMessage(sprintf('Duplicate key "%s" detected whilst parsing YAML. Silent handling of duplicate mapping keys in YAML is deprecated since version 3.2 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.', $key)), E_USER_DEPRECATED);
+                            @trigger_error($this->getDeprecationMessage(sprintf('Duplicate key "%s" detected whilst parsing YAML. Silent handling of duplicate mapping keys in YAML is deprecated since Symfony 3.2 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.', $key)), E_USER_DEPRECATED);
                         }
                     } else {
                         $value = $this->parseBlock($this->getRealCurrentLineNb() + 1, $this->getNextEmbedBlock(), $flags);
@@ -380,7 +380,7 @@ private function doParse($value, $flags)
                                 $data[$key] = $value;
                             }
                         } else {
-                            @trigger_error($this->getDeprecationMessage(sprintf('Duplicate key "%s" detected whilst parsing YAML. Silent handling of duplicate mapping keys in YAML is deprecated since version 3.2 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.', $key)), E_USER_DEPRECATED);
+                            @trigger_error($this->getDeprecationMessage(sprintf('Duplicate key "%s" detected whilst parsing YAML. Silent handling of duplicate mapping keys in YAML is deprecated since Symfony 3.2 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.', $key)), E_USER_DEPRECATED);
                         }
                     }
                 } else {
@@ -390,7 +390,7 @@ private function doParse($value, $flags)
                     if ($allowOverwrite || !isset($data[$key])) {
                         $data[$key] = $value;
                     } else {
-                        @trigger_error($this->getDeprecationMessage(sprintf('Duplicate key "%s" detected whilst parsing YAML. Silent handling of duplicate mapping keys in YAML is deprecated since version 3.2 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.', $key)), E_USER_DEPRECATED);
+                        @trigger_error($this->getDeprecationMessage(sprintf('Duplicate key "%s" detected whilst parsing YAML. Silent handling of duplicate mapping keys in YAML is deprecated since Symfony 3.2 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.', $key)), E_USER_DEPRECATED);
                     }
                 }
                 if ($isRef) {
@@ -403,7 +403,7 @@ private function doParse($value, $flags)
                 }
 
                 if (isset($this->currentLine[1]) && '?' === $this->currentLine[0] && ' ' === $this->currentLine[1]) {
-                    @trigger_error($this->getDeprecationMessage('Starting an unquoted string with a question mark followed by a space is deprecated since version 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.'), E_USER_DEPRECATED);
+                    @trigger_error($this->getDeprecationMessage('Starting an unquoted string with a question mark followed by a space is deprecated since Symfony 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.'), E_USER_DEPRECATED);
                 }
 
                 // 1-liner optionally followed by newline(s)
@@ -743,7 +743,7 @@ private function parseValue($value, $flags, $context)
                 } elseif ('tagged' === $matches['tag']) {
                     return new TaggedValue(substr($matches['tag'], 1), $data);
                 } elseif ('!' !== $matches['tag']) {
-                    @trigger_error($this->getDeprecationMessage(sprintf('Using the custom tag "%s" for the value "%s" is deprecated since version 3.3. It will be replaced by an instance of %s in 4.0.', $matches['tag'], $data, TaggedValue::class)), E_USER_DEPRECATED);
+                    @trigger_error($this->getDeprecationMessage(sprintf('Using the custom tag "%s" for the value "%s" is deprecated since Symfony 3.3. It will be replaced by an instance of %s in 4.0.', $matches['tag'], $data, TaggedValue::class)), E_USER_DEPRECATED);
                 }
             }
 
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/YtsSpecificationExamples.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/YtsSpecificationExamples.yml
index a7bba5edbe52..3f93c982bff2 100644
--- a/src/Symfony/Component/Yaml/Tests/Fixtures/YtsSpecificationExamples.yml
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/YtsSpecificationExamples.yml
@@ -928,7 +928,7 @@ documents: 2
 
 ---
 test: Explicit typing
-deprecated: Using the non-specific tag "!" is deprecated since version 3.4 as its behavior will change in 4.0.
+deprecated: Using the non-specific tag "!" is deprecated since Symfony 3.4 as its behavior will change in 4.0.
 yaml: |
    integer: 12
    also int: ! "12"
diff --git a/src/Symfony/Component/Yaml/Tests/InlineTest.php b/src/Symfony/Component/Yaml/Tests/InlineTest.php
index 48fd70a3a182..3d8606578e56 100644
--- a/src/Symfony/Component/Yaml/Tests/InlineTest.php
+++ b/src/Symfony/Component/Yaml/Tests/InlineTest.php
@@ -82,7 +82,7 @@ public function testParsePhpConstantThrowsExceptionOnInvalidType()
 
     /**
      * @group legacy
-     * @expectedDeprecation The !php/const: tag to indicate dumped PHP constants is deprecated since version 3.4 and will be removed in 4.0. Use the !php/const (without the colon) tag instead on line 1.
+     * @expectedDeprecation The !php/const: tag to indicate dumped PHP constants is deprecated since Symfony 3.4 and will be removed in 4.0. Use the !php/const (without the colon) tag instead on line 1.
      * @dataProvider getTestsForParseLegacyPhpConstants
      */
     public function testDeprecatedConstantTag($yaml, $expectedValue)
@@ -195,7 +195,7 @@ public function testParseInvalidMappingKeyShouldThrowException()
 
     /**
      * @group legacy
-     * @expectedDeprecation Using a colon after an unquoted mapping key that is not followed by an indication character (i.e. " ", ",", "[", "]", "{", "}") is deprecated since version 3.2 and will throw a ParseException in 4.0 on line 1.
+     * @expectedDeprecation Using a colon after an unquoted mapping key that is not followed by an indication character (i.e. " ", ",", "[", "]", "{", "}") is deprecated since Symfony 3.2 and will throw a ParseException in 4.0 on line 1.
      * throws \Symfony\Component\Yaml\Exception\ParseException in 4.0
      */
     public function testParseMappingKeyWithColonNotFollowedBySpace()
@@ -767,7 +767,7 @@ public function testTheEmptyStringIsAValidMappingKey()
 
     /**
      * @group legacy
-     * @expectedDeprecation Implicit casting of incompatible mapping keys to strings is deprecated since version 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0. Quote your evaluable mapping keys instead on line 1.
+     * @expectedDeprecation Implicit casting of incompatible mapping keys to strings is deprecated since Symfony 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0. Quote your evaluable mapping keys instead on line 1.
      * @dataProvider getNotPhpCompatibleMappingKeyData
      */
     public function testImplicitStringCastingOfMappingKeysIsDeprecated($yaml, $expected)
@@ -777,8 +777,8 @@ public function testImplicitStringCastingOfMappingKeysIsDeprecated($yaml, $expec
 
     /**
      * @group legacy
-     * @expectedDeprecation Using the Yaml::PARSE_KEYS_AS_STRINGS flag is deprecated since version 3.4 as it will be removed in 4.0. Quote your keys when they are evaluable instead.
-     * @expectedDeprecation Implicit casting of incompatible mapping keys to strings is deprecated since version 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0. Quote your evaluable mapping keys instead on line 1.
+     * @expectedDeprecation Using the Yaml::PARSE_KEYS_AS_STRINGS flag is deprecated since Symfony 3.4 as it will be removed in 4.0. Quote your keys when they are evaluable instead.
+     * @expectedDeprecation Implicit casting of incompatible mapping keys to strings is deprecated since Symfony 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0. Quote your evaluable mapping keys instead on line 1.
      * @dataProvider getNotPhpCompatibleMappingKeyData
      */
     public function testExplicitStringCastingOfMappingKeys($yaml, $expected)
@@ -798,7 +798,7 @@ public function getNotPhpCompatibleMappingKeyData()
 
     /**
      * @group legacy
-     * @expectedDeprecation Support for the !str tag is deprecated since version 3.4. Use the !!str tag instead on line 1.
+     * @expectedDeprecation Support for the !str tag is deprecated since Symfony 3.4. Use the !!str tag instead on line 1.
      */
     public function testDeprecatedStrTag()
     {
diff --git a/src/Symfony/Component/Yaml/Tests/ParserTest.php b/src/Symfony/Component/Yaml/Tests/ParserTest.php
index ce2429c29a35..9d605280579f 100644
--- a/src/Symfony/Component/Yaml/Tests/ParserTest.php
+++ b/src/Symfony/Component/Yaml/Tests/ParserTest.php
@@ -63,7 +63,7 @@ public function testSpecifications($expected, $yaml, $comment, $deprecated)
             restore_error_handler();
 
             $this->assertCount(1, $deprecations);
-            $this->assertContains(true !== $deprecated ? $deprecated : 'Using the comma as a group separator for floats is deprecated since version 3.2 and will be removed in 4.0 on line 1.', $deprecations[0]);
+            $this->assertContains(true !== $deprecated ? $deprecated : 'Using the comma as a group separator for floats is deprecated since Symfony 3.2 and will be removed in 4.0 on line 1.', $deprecations[0]);
         }
     }
 
@@ -74,7 +74,7 @@ public function getDataFormSpecifications()
 
     /**
      * @group legacy
-     * @expectedDeprecationMessage Using the Yaml::PARSE_KEYS_AS_STRINGS flag is deprecated since version 3.4 as it will be removed in 4.0. Quote your keys when they are evaluable
+     * @expectedDeprecationMessage Using the Yaml::PARSE_KEYS_AS_STRINGS flag is deprecated since Symfony 3.4 as it will be removed in 4.0. Quote your keys when they are evaluable
      * @dataProvider getNonStringMappingKeysData
      */
     public function testNonStringMappingKeys($expected, $yaml, $comment)
@@ -1096,7 +1096,7 @@ public function testYamlDirective()
 
     /**
      * @group legacy
-     * @expectedDeprecation Implicit casting of numeric key to string is deprecated since version 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0. Quote your evaluable mapping keys instead on line 2.
+     * @expectedDeprecation Implicit casting of numeric key to string is deprecated since Symfony 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0. Quote your evaluable mapping keys instead on line 2.
      */
     public function testFloatKeys()
     {
@@ -1118,7 +1118,7 @@ public function testFloatKeys()
 
     /**
      * @group legacy
-     * @expectedDeprecation Implicit casting of non-string key to string is deprecated since version 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0. Quote your evaluable mapping keys instead on line 1.
+     * @expectedDeprecation Implicit casting of non-string key to string is deprecated since Symfony 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0. Quote your evaluable mapping keys instead on line 1.
      */
     public function testBooleanKeys()
     {
@@ -1732,7 +1732,7 @@ public function testCustomTagsDisabled()
 
     /**
      * @group legacy
-     * @expectedDeprecation Using the unquoted scalar value "!iterator foo" is deprecated since version 3.3 and will be considered as a tagged value in 4.0. You must quote it on line 1.
+     * @expectedDeprecation Using the unquoted scalar value "!iterator foo" is deprecated since Symfony 3.3 and will be considered as a tagged value in 4.0. You must quote it on line 1.
      */
     public function testUnsupportedTagWithScalar()
     {
@@ -1750,7 +1750,7 @@ public function testExceptionWhenUsingUnsuportedBuiltInTags()
 
     /**
      * @group legacy
-     * @expectedDeprecation Starting an unquoted string with a question mark followed by a space is deprecated since version 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0 on line 1.
+     * @expectedDeprecation Starting an unquoted string with a question mark followed by a space is deprecated since Symfony 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0 on line 1.
      */
     public function testComplexMappingThrowsParseException()
     {
@@ -1765,7 +1765,7 @@ public function testComplexMappingThrowsParseException()
 
     /**
      * @group legacy
-     * @expectedDeprecation Starting an unquoted string with a question mark followed by a space is deprecated since version 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0 on line 2.
+     * @expectedDeprecation Starting an unquoted string with a question mark followed by a space is deprecated since Symfony 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0 on line 2.
      */
     public function testComplexMappingNestedInMappingThrowsParseException()
     {
@@ -1781,7 +1781,7 @@ public function testComplexMappingNestedInMappingThrowsParseException()
 
     /**
      * @group legacy
-     * @expectedDeprecation Starting an unquoted string with a question mark followed by a space is deprecated since version 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0 on line 1.
+     * @expectedDeprecation Starting an unquoted string with a question mark followed by a space is deprecated since Symfony 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0 on line 1.
      */
     public function testComplexMappingNestedInSequenceThrowsParseException()
     {
@@ -1895,9 +1895,9 @@ public function testPhpConstantTagMappingKey()
 
     /**
      * @group legacy
-     * @expectedDeprecation The !php/const: tag to indicate dumped PHP constants is deprecated since version 3.4 and will be removed in 4.0. Use the !php/const (without the colon) tag instead on line 2.
-     * @expectedDeprecation The !php/const: tag to indicate dumped PHP constants is deprecated since version 3.4 and will be removed in 4.0. Use the !php/const (without the colon) tag instead on line 4.
-     * @expectedDeprecation The !php/const: tag to indicate dumped PHP constants is deprecated since version 3.4 and will be removed in 4.0. Use the !php/const (without the colon) tag instead on line 5.
+     * @expectedDeprecation The !php/const: tag to indicate dumped PHP constants is deprecated since Symfony 3.4 and will be removed in 4.0. Use the !php/const (without the colon) tag instead on line 2.
+     * @expectedDeprecation The !php/const: tag to indicate dumped PHP constants is deprecated since Symfony 3.4 and will be removed in 4.0. Use the !php/const (without the colon) tag instead on line 4.
+     * @expectedDeprecation The !php/const: tag to indicate dumped PHP constants is deprecated since Symfony 3.4 and will be removed in 4.0. Use the !php/const (without the colon) tag instead on line 5.
      */
     public function testDeprecatedPhpConstantTagMappingKey()
     {
@@ -1924,7 +1924,7 @@ public function testDeprecatedPhpConstantTagMappingKey()
 
     /**
      * @group legacy
-     * @expectedDeprecation Using the Yaml::PARSE_KEYS_AS_STRINGS flag is deprecated since version 3.4 as it will be removed in 4.0. Quote your keys when they are evaluable instead.
+     * @expectedDeprecation Using the Yaml::PARSE_KEYS_AS_STRINGS flag is deprecated since Symfony 3.4 as it will be removed in 4.0. Quote your keys when they are evaluable instead.
      */
     public function testPhpConstantTagMappingKeyWithKeysCastToStrings()
     {
diff --git a/src/Symfony/Component/Yaml/Yaml.php b/src/Symfony/Component/Yaml/Yaml.php
index 24e3e95cba32..d429a3391cb4 100644
--- a/src/Symfony/Component/Yaml/Yaml.php
+++ b/src/Symfony/Component/Yaml/Yaml.php
@@ -81,7 +81,7 @@ public static function parseFile($filename, $flags = 0)
     public static function parse($input, $flags = 0)
     {
         if (is_bool($flags)) {
-            @trigger_error('Passing a boolean flag to toggle exception handling is deprecated since version 3.1 and will be removed in 4.0. Use the PARSE_EXCEPTION_ON_INVALID_TYPE flag instead.', E_USER_DEPRECATED);
+            @trigger_error('Passing a boolean flag to toggle exception handling is deprecated since Symfony 3.1 and will be removed in 4.0. Use the PARSE_EXCEPTION_ON_INVALID_TYPE flag instead.', E_USER_DEPRECATED);
 
             if ($flags) {
                 $flags = self::PARSE_EXCEPTION_ON_INVALID_TYPE;
@@ -91,7 +91,7 @@ public static function parse($input, $flags = 0)
         }
 
         if (func_num_args() >= 3) {
-            @trigger_error('Passing a boolean flag to toggle object support is deprecated since version 3.1 and will be removed in 4.0. Use the PARSE_OBJECT flag instead.', E_USER_DEPRECATED);
+            @trigger_error('Passing a boolean flag to toggle object support is deprecated since Symfony 3.1 and will be removed in 4.0. Use the PARSE_OBJECT flag instead.', E_USER_DEPRECATED);
 
             if (func_get_arg(2)) {
                 $flags |= self::PARSE_OBJECT;
@@ -99,7 +99,7 @@ public static function parse($input, $flags = 0)
         }
 
         if (func_num_args() >= 4) {
-            @trigger_error('Passing a boolean flag to toggle object for map support is deprecated since version 3.1 and will be removed in 4.0. Use the Yaml::PARSE_OBJECT_FOR_MAP flag instead.', E_USER_DEPRECATED);
+            @trigger_error('Passing a boolean flag to toggle object for map support is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::PARSE_OBJECT_FOR_MAP flag instead.', E_USER_DEPRECATED);
 
             if (func_get_arg(3)) {
                 $flags |= self::PARSE_OBJECT_FOR_MAP;
@@ -127,7 +127,7 @@ public static function parse($input, $flags = 0)
     public static function dump($input, $inline = 2, $indent = 4, $flags = 0)
     {
         if (is_bool($flags)) {
-            @trigger_error('Passing a boolean flag to toggle exception handling is deprecated since version 3.1 and will be removed in 4.0. Use the DUMP_EXCEPTION_ON_INVALID_TYPE flag instead.', E_USER_DEPRECATED);
+            @trigger_error('Passing a boolean flag to toggle exception handling is deprecated since Symfony 3.1 and will be removed in 4.0. Use the DUMP_EXCEPTION_ON_INVALID_TYPE flag instead.', E_USER_DEPRECATED);
 
             if ($flags) {
                 $flags = self::DUMP_EXCEPTION_ON_INVALID_TYPE;
@@ -137,7 +137,7 @@ public static function dump($input, $inline = 2, $indent = 4, $flags = 0)
         }
 
         if (func_num_args() >= 5) {
-            @trigger_error('Passing a boolean flag to toggle object support is deprecated since version 3.1 and will be removed in 4.0. Use the DUMP_OBJECT flag instead.', E_USER_DEPRECATED);
+            @trigger_error('Passing a boolean flag to toggle object support is deprecated since Symfony 3.1 and will be removed in 4.0. Use the DUMP_OBJECT flag instead.', E_USER_DEPRECATED);
 
             if (func_get_arg(4)) {
                 $flags |= self::DUMP_OBJECT;