symfony
diff --git a/‎src/Symfony/Component/Debug/ExceptionHandler.php
Lines changed: 2 additions & 2 deletions b/‎src/Symfony/Component/Debug/ExceptionHandler.php
Lines changed: 2 additions & 2 deletions
diff --git a/‎src/Symfony/Component/ErrorHandler/Debug.php
Lines changed: 0 additions & 1 deletion b/‎src/Symfony/Component/ErrorHandler/Debug.php
Lines changed: 0 additions & 1 deletion
diff --git a/‎src/Symfony/Component/ErrorHandler/ErrorHandler.php
Lines changed: 13 additions & 3 deletions b/‎src/Symfony/Component/ErrorHandler/ErrorHandler.php
Lines changed: 13 additions & 3 deletions
diff --git a/‎src/Symfony/Component/ErrorHandler/ExceptionHandler.php
Lines changed: 0 additions & 187 deletions b/‎src/Symfony/Component/ErrorHandler/ExceptionHandler.php
Lines changed: 0 additions & 187 deletions
@@ -15,7 +15,7 @@
 use Symfony\Component\Debug\Exception\OutOfMemoryException;
 use Symfony\Component\HttpKernel\Debug\FileLinkFormatter;
 
-@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.4, use "%s" instead.', ExceptionHandler::class, \Symfony\Component\ErrorHandler\ExceptionHandler::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.4, use "%s" instead.', ExceptionHandler::class, \Symfony\Component\ErrorHandler\ErrorHandler::class), E_USER_DEPRECATED);
 
 /**
  * ExceptionHandler converts an exception to a Response object.
@@ -31,7 +31,7 @@
  *
  * @final since Symfony 4.3
  *
- * @deprecated since Symfony 4.4, use Symfony\Component\ErrorHandler\ExceptionHandler instead.
+ * @deprecated since Symfony 4.4, use Symfony\Component\ErrorHandler\ErrorHandler instead.
  */
 class ExceptionHandler
 {
 
@@ -44,7 +44,6 @@ public static function enable($errorReportingLevel = E_ALL, $displayErrors = tru
 
         if (!\in_array(\PHP_SAPI, ['cli', 'phpdbg'], true)) {
             ini_set('display_errors', 0);
-            ExceptionHandler::register();
         } elseif ($displayErrors && (!filter_var(ini_get('log_errors'), FILTER_VALIDATE_BOOLEAN) || ini_get('error_log'))) {
             // CLI - display errors only if they're not already logged to STDERR
             ini_set('display_errors', 1);
 
@@ -21,7 +21,6 @@
 use Symfony\Component\ErrorHandler\FatalErrorHandler\FatalErrorHandlerInterface;
 use Symfony\Component\ErrorHandler\FatalErrorHandler\UndefinedFunctionFatalErrorHandler;
 use Symfony\Component\ErrorHandler\FatalErrorHandler\UndefinedMethodFatalErrorHandler;
-use Symfony\Component\ErrorRenderer\Exception\FlattenException;
 
 /**
  * A generic ErrorHandler for the PHP engine.
@@ -414,7 +413,7 @@ public function handleError($type, $message, $file, $line)
         }
 
         if (false !== strpos($message, "class@anonymous\0")) {
-            $logMessage = $this->levels[$type].': '.(new FlattenException())->setMessage($message)->getMessage();
+            $logMessage = $this->parseAnonymousClass($message);
         } else {
             $logMessage = $this->levels[$type].': '.$message;
         }
@@ -539,7 +538,7 @@ public function handleException($exception, array $error = null)
 
         if (($this->loggedErrors & $type) || $exception instanceof FatalThrowableError) {
             if (false !== strpos($message = $exception->getMessage(), "class@anonymous\0")) {
-                $message = (new FlattenException())->setMessage($message)->getMessage();
+                $message = $this->parseAnonymousClass($message);
             }
             if ($exception instanceof FatalErrorException) {
                 if ($exception instanceof FatalThrowableError) {
@@ -712,4 +711,15 @@ private function cleanTrace($backtrace, $type, $file, $line, $throw)
 
         return $lightTrace;
     }
+
+    /**
+     * Parse the error message by removing the anonymous class notation
+     * and using the parent class instead if possible.
+     */
+    private function parseAnonymousClass(string $message): string
+    {
+        return preg_replace_callback('/class@anonymous\x00.*?\.php0x?[0-9a-fA-F]++/', static function ($m) {
+            return class_exists($m[0], false) ? get_parent_class($m[0]).'@anonymous' : $m[0];
+        }, $message);
+    }
 }
Original file line number	Diff line number	Diff line change
`@@ -15,7 +15,7 @@`
`15`	`15`	`use Symfony\Component\Debug\Exception\OutOfMemoryException;`
`16`	`16`	`use Symfony\Component\HttpKernel\Debug\FileLinkFormatter;`
`17`	`17`
`18`		`-@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.4, use "%s" instead.', ExceptionHandler::class, \Symfony\Component\ErrorHandler\ExceptionHandler::class), E_USER_DEPRECATED);`
	`18`	`+@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.4, use "%s" instead.', ExceptionHandler::class, \Symfony\Component\ErrorHandler\ErrorHandler::class), E_USER_DEPRECATED);`
`19`	`19`
`20`	`20`	`/**`
`21`	`21`	`* ExceptionHandler converts an exception to a Response object.`
`@@ -31,7 +31,7 @@`
`31`	`31`	`*`
`32`	`32`	`* @final since Symfony 4.3`
`33`	`33`	`*`
`34`		`- * @deprecated since Symfony 4.4, use Symfony\Component\ErrorHandler\ExceptionHandler instead.`
	`34`	`+ * @deprecated since Symfony 4.4, use Symfony\Component\ErrorHandler\ErrorHandler instead.`
`35`	`35`	`*/`
`36`	`36`	`class ExceptionHandler`
`37`	`37`	`{`