1 files changed, 8 insertions, 2 deletions
diff --git a/WebCore/bindings/js/JSDOMWindowCustom.cpp b/WebCore/bindings/js/JSDOMWindowCustom.cpp
index af2353c..66631f6 100644
--- a/WebCore/bindings/js/JSDOMWindowCustom.cpp
+++ b/WebCore/bindings/js/JSDOMWindowCustom.cpp
@@ -107,16 +107,22 @@ bool JSDOMWindow::customGetOwnPropertySlot(ExecState* exec, const Identifier& pr
     return false;
 }
 
-bool JSDOMWindow::customPut(ExecState* exec, const Identifier& propertyName, JSValue* value)
+bool JSDOMWindow::customPut(ExecState* exec, const Identifier& propertyName, JSValue* value, int attr)
 {
     if (!impl()->frame())
         return true;
 
+    // Called by an internal KJS, save time and jump directly to JSGlobalObject.
+    if (attr != None && attr != DontDelete) {
+        JSGlobalObject::put(exec, propertyName, value, attr);
+        return true;
+    }
+
     // We have a local override (e.g. "var location"), save time and jump directly to JSGlobalObject.
     PropertySlot slot;
     if (JSGlobalObject::getOwnPropertySlot(exec, propertyName, slot)) {
         if (allowsAccessFrom(exec))
-            JSGlobalObject::put(exec, propertyName, value);
+            JSGlobalObject::put(exec, propertyName, value, attr);
         return true;
     }