Introduce access control in propertyIsEnumerable....

src/runtime.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1887 matching lines @@
   ASSERT(args.length() == 2);
 
   CONVERT_CHECKED(JSObject, object, args[0]);
   CONVERT_CHECKED(String, key, args[1]);
 
   uint32_t index;
   if (key->AsArrayIndex(&index)) {
     return Heap::ToBoolean(object->HasElement(index));
   }
 
-  LookupResult result;
-  object->LocalLookup(key, &result);
-  if (!result.IsProperty()) return Heap::false_value();
-  return Heap::ToBoolean(!result.IsDontEnum());
+  PropertyAttributes att = object->GetLocalPropertyAttribute(key);
+  return Heap::ToBoolean(att != ABSENT && att != DONT_ENUM);
 }
 
 
 static Object* Runtime_GetPropertyNames(Arguments args) {
   HandleScope scope;
   ASSERT(args.length() == 1);
 
   CONVERT_CHECKED(JSObject, raw_object, args[0]);
   Handle<JSObject> object(raw_object);
   return *GetKeysFor(object);
@@ skipping 3601 matching lines @@
 
 void Runtime::PerformGC(Object* result) {
   Failure* failure = Failure::cast(result);
   // Try to do a garbage collection; ignore it if it fails. The C
   // entry stub will throw an out-of-memory exception in that case.
   Heap::CollectGarbage(failure->requested(), failure->allocation_space());
 }
 
 
 } }  // namespace v8::internal