Fix bug in Object.isFrozen which always classifies non-extensible objects as ...

src/v8natives.js

 // 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 766 matching lines @@
 // ES5 section 15.2.3.12
 function ObjectIsFrozen(obj) {
   if ((!IS_SPEC_OBJECT_OR_NULL(obj) || IS_NULL_OR_UNDEFINED(obj)) &&
       !IS_UNDETECTABLE(obj)) {
     throw MakeTypeError("obj_ctor_property_non_object", ["isFrozen"]);
   }
   var names = ObjectGetOwnPropertyNames(obj);
   for (var key in names) {
     var name = names[key];
     var desc = GetOwnProperty(obj, name);
-    if (IsDataDescriptor(desc) && desc.writable) return false;
-    if (desc.configurable) return false;
+    if (IsDataDescriptor(desc) && desc.isWritable()) return false;
+    if (desc.isConfigurable()) return false;
   }
   if (!ObjectIsExtensible(obj)) {
     return true;
   }
   return false;
 }
 
 
 // ES5 section 15.2.3.13
 function ObjectIsExtensible(obj) {
@@ skipping 305 matching lines @@
 
 // ----------------------------------------------------------------------------
 
 function SetupFunction() {
   InstallFunctions($Function.prototype, DONT_ENUM, $Array(
     "toString", FunctionToString
   ));
 }
 
 SetupFunction();