symfony
diff --git a/‎src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
Lines changed: 20 additions & 6 deletions b/‎src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
Lines changed: 20 additions & 6 deletions
@@ -694,8 +694,8 @@ private function registerTranslatorConfiguration(array $config, ContainerBuilder
         }
         $rootDir = $container->getParameter('kernel.root_dir');
         foreach ($container->getParameter('kernel.bundles') as $bundle => $class) {
-            $reflection = new \ReflectionClass($class);
-            if (is_dir($dir = dirname($reflection->getFileName()).'/Resources/translations')) {
+            $dirname = $this->getBundlePath($class);
+            if (is_dir($dir = $dirname.'/Resources/translations')) {
                 $dirs[] = $dir;
             }
             if (is_dir($dir = $rootDir.sprintf('/Resources/%s/translations', $bundle))) {
@@ -808,8 +808,7 @@ private function getValidatorMappingFiles(ContainerBuilder $container)
 
         $bundles = $container->getParameter('kernel.bundles');
         foreach ($bundles as $bundle) {
-            $reflection = new \ReflectionClass($bundle);
-            $dirname = dirname($reflection->getFileName());
+            $dirname = $this->getBundlePath($bundle);
 
             if (is_file($file = $dirname.'/Resources/config/validation.xml')) {
                 $files[0][] = realpath($file);
@@ -923,8 +922,7 @@ private function registerSerializerConfiguration(array $config, ContainerBuilder
 
         $bundles = $container->getParameter('kernel.bundles');
         foreach ($bundles as $bundle) {
-            $reflection = new \ReflectionClass($bundle);
-            $dirname = dirname($reflection->getFileName());
+            $dirname = $this->getBundlePath($bundle);
 
             if (is_file($file = $dirname.'/Resources/config/serialization.xml')) {
                 $definition = new Definition('Symfony\Component\Serializer\Mapping\Loader\XmlFileLoader', array(realpath($file)));
@@ -990,6 +988,22 @@ private function getKernelRootHash(ContainerBuilder $container)
         return $this->kernelRootHash;
     }
 
+    /**
+     * Gets the path of a given bundle using Bundle#getPath() when available.
+     *
+     * @param string $fqcn The bundle FQCN
+     *
+     * @return string
+     */
+    private function getBundlePath($fqcn)
+    {
+        $reflection = new \ReflectionClass($fqcn);
+        $getPathReflection = new \ReflectionMethod($fqcn, 'getPath');
+        $reflectionInstance = $reflection->newInstanceWithoutConstructor();
+
+        return $getPathReflection->invoke($reflectionInstance) ?: dirname($reflection->getFilename());
+    }
+
     /**
      * Returns the base path for the XSD files.
      *