1 files changed, 14 insertions, 5 deletions
diff --git a/vendor/symfony/http-kernel/DataCollector/DataCollector.php b/vendor/symfony/http-kernel/DataCollector/DataCollector.php
index a3d8c99d84..14ea230f57 100644
--- a/vendor/symfony/http-kernel/DataCollector/DataCollector.php
+++ b/vendor/symfony/http-kernel/DataCollector/DataCollector.php
@@ -27,21 +27,30 @@ use Symfony\Component\VarDumper\Cloner\VarCloner;
  */
 abstract class DataCollector implements DataCollectorInterface, \Serializable
 {
-    protected $data = array();
+    protected $data = [];
 
     /**
      * @var ClonerInterface
      */
     private $cloner;
 
+    /**
+     * @internal
+     */
     public function serialize()
     {
-        return serialize($this->data);
+        $trace = debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT, 2);
+        $isCalledFromOverridingMethod = isset($trace[1]['function'], $trace[1]['object']) && 'serialize' === $trace[1]['function'] && $this === $trace[1]['object'];
+
+        return $isCalledFromOverridingMethod ? $this->data : serialize($this->data);
     }
 
+    /**
+     * @internal
+     */
     public function unserialize($data)
     {
-        $this->data = unserialize($data);
+        $this->data = \is_array($data) ? $data : unserialize($data);
     }
 
     /**
@@ -76,7 +85,7 @@ abstract class DataCollector implements DataCollectorInterface, \Serializable
      */
     protected function getCasters()
     {
-        return array(
+        return [
             '*' => function ($v, array $a, Stub $s, $isNested) {
                 if (!$v instanceof Stub) {
                     foreach ($a as $k => $v) {
@@ -88,6 +97,6 @@ abstract class DataCollector implements DataCollectorInterface, \Serializable
 
                 return $a;
             },
-        );
+        ];
     }
 }