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

src/v8natives.js

Index: src/v8natives.js
===================================================================
--- src/v8natives.js	(revision 5067)
+++ src/v8natives.js	(working copy)
@@ -784,8 +784,8 @@
   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;