Add support for API accessors that prohibit overwriting by accessors...

src/bootstrapper.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 579 matching lines @@
             v8::Utils::OpenHandle(*global_template);
         Handle<FunctionTemplateInfo> global_constructor(
                 FunctionTemplateInfo::cast(data->constructor()));
         global_proxy_function =
             Factory::CreateApiFunction(global_constructor,
                                        Factory::OuterGlobalObject);
       }
 
       Handle<String> global_name = Factory::LookupAsciiSymbol("global");
       global_proxy_function->shared()->set_instance_class_name(*global_name);
-      global_proxy_function->initial_map()->set_is_access_check_needed();
+      global_proxy_function->initial_map()->set_is_access_check_needed(true);
 
       // Set global_proxy.__proto__ to js_global after ConfigureGlobalObjects
 
       if (global_object.location() != NULL) {
         ASSERT(global_object->IsJSGlobalProxy());
         global_proxy =
             ReinitializeJSGlobalProxy(
                 global_proxy_function,
                 Handle<JSGlobalProxy>::cast(global_object));
       } else {
@@ skipping 837 matching lines @@
   if (!ConfigureGlobalObjects(global_template)) return;
 
   if (!InstallExtensions(extensions)) return;
 
   if (!InstallSpecialObjects()) return;
 
   result_ = global_context_;
 }
 
 } }  // namespace v8::internal