gistfile1.txt

@@ -1461,18 +1461,26 @@ function twig_get_attribute(Twig_Environment $env, Twig_Source $source, $object,
 
     if ($object instanceof Twig_Template) {
         throw new Twig_Error_Runtime('Accessing Twig_Template attributes is forbidden.');
     }
 
+	static $extensionSandbox = null;
+	if ($extensionSandbox === null) {
+		if ($env->hasExtension('Twig_Extension_Sandbox'))
+			$extensionSandbox = true;
+		else
+			$extensionSandbox = false;
+	}
+
     // object property
     if (Twig_Template::METHOD_CALL !== $type) {
         if (isset($object->$item) || array_key_exists((string) $item, $object)) {
             if ($isDefinedTest) {
                 return true;
             }
 
-            if ($env->hasExtension('Twig_Extension_Sandbox')) {
+            if ($extensionSandbox) {
                 $env->getExtension('Twig_Extension_Sandbox')->checkPropertyAllowed($object, $item);
             }
 
             return $object->$item;
         }
@@ -1537,11 +1545,11 @@ function twig_get_attribute(Twig_Environment $env, Twig_Source $source, $object,
 
     if ($isDefinedTest) {
         return true;
     }
 
-    if ($env->hasExtension('Twig_Extension_Sandbox')) {
+    if ($extensionSandbox) {
         $env->getExtension('Twig_Extension_Sandbox')->checkMethodAllowed($object, $method);
     }
 
     // Some objects throw exceptions when they have __call, and the method we try
     // to call is not supported. If ignoreStrictCheck is true, we should return null.