Fix issue 191:...

src/objects.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 1581 matching lines @@
     return SetPropertyWithFailedAccessCheck(result, name, value);
   }
 
   if (IsJSGlobalProxy()) {
     Object* proto = GetPrototype();
     if (proto->IsNull()) return value;
     ASSERT(proto->IsJSGlobalObject());
     return JSObject::cast(proto)->SetProperty(result, name, value, attributes);
   }
 
-  if (result->IsNotFound() || !result->IsProperty()) {
+  if (!result->IsProperty() && !IsJSContextExtensionObject()) {
     // We could not find a local property so let's check whether there is an
     // accessor that wants to handle the property.
     LookupResult accessor_result;
     LookupCallbackSetterInPrototypes(name, &accessor_result);
     if (accessor_result.IsValid()) {
       return SetPropertyWithCallback(accessor_result.GetCallbackObject(),
                                      name,
                                      value,
                                      accessor_result.holder());
     }
@@ skipping 5402 matching lines @@
   // No break point.
   if (break_point_objects()->IsUndefined()) return 0;
   // Single beak point.
   if (!break_point_objects()->IsFixedArray()) return 1;
   // Multiple break points.
   return FixedArray::cast(break_point_objects())->length();
 }
 
 
 } }  // namespace v8::internal