Correctly reference global proxy in the partial snapshot.

src/factory.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/factory.h"
 
 #include "src/allocation-site-scopes.h"
 #include "src/base/bits.h"
 #include "src/conversions.h"
 #include "src/isolate-inl.h"
@@ skipping 1940 matching lines @@
     map->set_function_with_prototype(true);
     Handle<JSFunction> js_function = Handle<JSFunction>::cast(proxy);
     InitializeFunction(js_function, shared.ToHandleChecked(), context);
   } else {
     // Provide JSObjects with a constructor.
     map->set_constructor(context->object_function());
   }
 }
 
 
+Handle<JSGlobalProxy> Factory::NewUninitializedJSGlobalProxy() {
+  // Create an empty shell of a JSGlobalProxy that needs to be reinitialized
+  // via ReinitializeJSGlobalProxy later.
+  Handle<Map> map = NewMap(JS_GLOBAL_PROXY_TYPE, JSGlobalProxy::kSize,
+                           FAST_HOLEY_SMI_ELEMENTS);

[Toon Verwaest, 2015/01/14 14:16:28]

Omit the last argument to get the default elements kind.

+  // Maintain invariant expected from any JSGlobalProxy.
+  map->set_is_access_check_needed(true);
+  CALL_HEAP_FUNCTION(isolate(), isolate()->heap()->AllocateJSObjectFromMap(
+                                    *map, NOT_TENURED, false),
+                     JSGlobalProxy);
+}
+
+
 void Factory::ReinitializeJSGlobalProxy(Handle<JSGlobalProxy> object,
                                         Handle<JSFunction> constructor) {
   DCHECK(constructor->has_initial_map());
   Handle<Map> map(constructor->initial_map(), isolate());
 
   // The proxy's hash should be retained across reinitialization.
   Handle<Object> hash(object->hash(), isolate());
 
   // Check that the already allocated object has the same size and type as
   // objects allocated using the constructor.
@@ skipping 536 matching lines @@
   return Handle<Object>::null();
 }
 
 
 Handle<Object> Factory::ToBoolean(bool value) {
   return value ? true_value() : false_value();
 }
 
 
 } }  // namespace v8::internal