symfony · fabpot · Nov 16, 2018 · Nov 12, 2018
diff --git a/src/Symfony/Component/Debug/ErrorHandler.php b/src/Symfony/Component/Debug/ErrorHandler.php
@@ -417,8 +417,8 @@ public function handleError($type, $message, $file, $line)
             self::$toStringException = null;
         } elseif (!$throw && !($type & $level)) {
             if (!isset(self::$silencedErrorCache[$id = $file.':'.$line])) {
-                $lightTrace = $this->tracedErrors & $type ? $this->cleanTrace(debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 3), $type, $file, $line, false) : array();
-                $errorAsException = new SilencedErrorContext($type, $file, $line, $lightTrace);
+                $lightTrace = $this->tracedErrors & $type ? $this->cleanTrace(debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 5), $type, $file, $line, false) : array();
+                $errorAsException = new SilencedErrorContext($type, $file, $line, isset($lightTrace[1]) ? array($lightTrace[0]) : $lightTrace);
             } elseif (isset(self::$silencedErrorCache[$id][$message])) {
                 $lightTrace = null;
                 $errorAsException = self::$silencedErrorCache[$id][$message];
@@ -441,7 +441,6 @@ public function handleError($type, $message, $file, $line)
         } else {
             $errorAsException = new \ErrorException($logMessage, 0, $type, $file, $line);
 
-            // Clean the trace by removing function arguments and the first frames added by the error handler itself.
             if ($throw || $this->tracedErrors & $type) {
                 $backtrace = $errorAsException->getTrace();
                 $lightTrace = $this->cleanTrace($backtrace, $type, $file, $line, $throw);
@@ -669,6 +668,9 @@ protected function getFatalErrorHandlers()
         );
     }
 
+    /**
+     * Cleans the trace by removing function arguments and the frames added by the error handler and DebugClassLoader.
+     */
     private function cleanTrace($backtrace, $type, $file, $line, $throw)
     {
         $lightTrace = $backtrace;
@@ -679,6 +681,13 @@ private function cleanTrace($backtrace, $type, $file, $line, $throw)
                 break;
             }
         }
+        if (class_exists(DebugClassLoader::class, false)) {
+            for ($i = \count($lightTrace) - 2; 0 < $i; --$i) {
+                if (DebugClassLoader::class === ($lightTrace[$i]['class'] ?? null)) {
+                    array_splice($lightTrace, --$i, 2);
+                }
+            }
+        }
         if (!($throw || $this->scopedErrors & $type)) {
             for ($i = 0; isset($lightTrace[$i]); ++$i) {
                 unset($lightTrace[$i]['args'], $lightTrace[$i]['object']);

diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -16,6 +16,7 @@
 use Symfony\Component\Config\ConfigCache;
 use Symfony\Component\Config\Loader\DelegatingLoader;
 use Symfony\Component\Config\Loader\LoaderResolver;
+use Symfony\Component\Debug\DebugClassLoader;
 use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
 use Symfony\Component\DependencyInjection\Compiler\PassConfig;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
@@ -504,21 +505,28 @@ protected function initializeContainer()
                     return;
                 }
 
-                $backtrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 3);
+                $backtrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 5);
                 // Clean the trace by removing first frames added by the error handler itself.
                 for ($i = 0; isset($backtrace[$i]); ++$i) {
                     if (isset($backtrace[$i]['file'], $backtrace[$i]['line']) && $backtrace[$i]['line'] === $line && $backtrace[$i]['file'] === $file) {
                         $backtrace = \array_slice($backtrace, 1 + $i);
                         break;
                     }
                 }
+                // Remove frames added by DebugClassLoader.
+                for ($i = \count($backtrace) - 2; 0 < $i; --$i) {
+                    if (DebugClassLoader::class === ($backtrace[$i]['class'] ?? null)) {
+                        $backtrace = array($backtrace[$i + 1]);
+                        break;
+                    }
+                }
 
                 $collectedLogs[$message] = array(
                     'type' => $type,
                     'message' => $message,
                     'file' => $file,
                     'line' => $line,
-                    'trace' => $backtrace,
+                    'trace' => array($backtrace[0]),
                     'count' => 1,
                 );
             });