symfony
diff --git a/‎src/Symfony/Component/DependencyInjection/ContainerBuilder.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/DependencyInjection/ContainerBuilder.php
+9-1Lines changed: 9 additions & 1 deletion b/‎src/Symfony/Component/DependencyInjection/ContainerBuilder.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/DependencyInjection/ContainerBuilder.php
+9-1Lines changed: 9 additions & 1 deletion
@@ -26,6 +26,7 @@
 use Symfony\Component\Config\Resource\ResourceInterface;
 use Symfony\Component\DependencyInjection\LazyProxy\Instantiator\InstantiatorInterface;
 use Symfony\Component\DependencyInjection\LazyProxy\Instantiator\RealServiceInstantiator;
+use Symfony\Component\DependencyInjection\ParameterBag\ParameterBagInterface;
 use Symfony\Component\ExpressionLanguage\Expression;
 use Symfony\Component\ExpressionLanguage\ExpressionFunctionProviderInterface;
 
@@ -73,7 +74,7 @@ class ContainerBuilder extends Container implements TaggedContainerInterface
      */
     private $compiler;
 
-    private $trackResources = true;
+    private $trackResources;
 
     /**
      * @var InstantiatorInterface|null
@@ -90,6 +91,13 @@ class ContainerBuilder extends Container implements TaggedContainerInterface
      */
     private $expressionLanguageProviders = array();
 
+    public function __construct(ParameterBagInterface $parameterBag = null)
+    {
+        parent::__construct($parameterBag);
+
+        $this->trackResources = interface_exists('Symfony\Component\Config\Resource\ResourceInterface');
+    }
+
     /**
      * Sets the track resources flag.
      *