use func_num_args

dunglas · dunglas · commit fa5b6fdfc8f7 · 2018-04-25T12:04:44.000+02:00
diff --git a/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php
@@ -192,8 +192,8 @@ protected function isCircularReference($object, &$context)
      */
     protected function handleCircularReference($object/*, ?string $format = null, array $context = array()*/)
     {
-        $format = @func_get_arg(1) ?: null;
-        $context = @func_get_arg(2) ?: array();
+        $format = \func_num_args() > 1 ? func_get_arg(1) : null;
+        $context = \func_num_args() > 2 ? func_get_arg(2) : array();
 
         if ($this->circularReferenceHandler) {
             return \call_user_func($this->circularReferenceHandler, $object, $format, $context);
