diff --git a/src/d8.gyp b/src/d8.gyp
index 98ec04fc86..0e51baaaca 100644
--- a/src/d8.gyp
+++ b/src/d8.gyp
@@ -31,7 +31,7 @@
     'console%': '',
     # Enable support for Intel VTune. Supported on ia32/x64 only
     'v8_enable_vtunejit%': 0,
-    'v8_enable_i18n_support%': 0,
+    'v8_enable_i18n_support%': 1,
     'v8_toolset_for_d8%': 'target',
   },
   'includes': ['../build/toolchain.gypi', '../build/features.gypi'],
diff --git a/src/handles.cc b/src/handles.cc
index 830eb09602..47bab25d4e 100644
--- a/src/handles.cc
+++ b/src/handles.cc
@@ -537,10 +537,10 @@ Handle<FixedArray> GetKeysInFixedArrayFor(Handle<JSReceiver> object,
 
     // Check access rights if required.
     if (current->IsAccessCheckNeeded() &&
-        !isolate->MayNamedAccess(*current,
-                                 isolate->heap()->undefined_value(),
-                                 v8::ACCESS_KEYS)) {
-      isolate->ReportFailedAccessCheck(*current, v8::ACCESS_KEYS);
+        !isolate->MayNamedAccessWrapper(current,
+                                        isolate->factory()->undefined_value(),
+                                        v8::ACCESS_KEYS)) {
+      isolate->ReportFailedAccessCheckWrapper(current, v8::ACCESS_KEYS);
       if (isolate->has_scheduled_exception()) {
         isolate->PromoteScheduledException();
         *threw = true;
diff --git a/src/isolate.h b/src/isolate.h
index 897197bc75..5dd0998731 100644
--- a/src/isolate.h
+++ b/src/isolate.h
@@ -741,6 +741,10 @@ class Isolate {
                                v8::AccessType type) {
     return MayIndexedAccess(*receiver, index, type);
   }
+  void ReportFailedAccessCheckWrapper(Handle<JSObject> receiver,
+                                      v8::AccessType type) {
+    ReportFailedAccessCheck(*receiver, type);
+  }
 
   bool MayNamedAccess(JSObject* receiver,
                       Object* key,
diff --git a/src/objects.cc b/src/objects.cc
index 32b1d2c6a3..fc12cf96b3 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -615,7 +615,7 @@ Handle<Object> JSObject::GetPropertyWithFailedAccessCheck(
 
   // No accessible property found.
   *attributes = ABSENT;
-  isolate->ReportFailedAccessCheck(*object, v8::ACCESS_GET);
+  isolate->ReportFailedAccessCheckWrapper(object, v8::ACCESS_GET);
   RETURN_HANDLE_IF_SCHEDULED_EXCEPTION(isolate, Object);
   return isolate->factory()->undefined_value();
 }
@@ -3381,6 +3381,7 @@ MaybeObject* Map::AsElementsKind(ElementsKind kind) {
 
 
 void JSObject::LocalLookupRealNamedProperty(Name* name, LookupResult* result) {
+  DisallowHeapAllocation no_gc;
   if (IsJSGlobalProxy()) {
     Object* proto = GetPrototype();
     if (proto->IsNull()) return result->NotFound();
@@ -3516,7 +3517,7 @@ Handle<Object> JSObject::SetPropertyWithFailedAccessCheck(
   }
 
   Isolate* isolate = object->GetIsolate();
-  isolate->ReportFailedAccessCheck(*object, v8::ACCESS_SET);
+  isolate->ReportFailedAccessCheckWrapper(object, v8::ACCESS_SET);
   RETURN_HANDLE_IF_SCHEDULED_EXCEPTION(isolate, Object);
   return value;
 }
@@ -4046,7 +4047,7 @@ Handle<Object> JSObject::SetPropertyForResult(Handle<JSObject> object,
 
   // Check access rights if needed.
   if (object->IsAccessCheckNeeded()) {
-    if (!isolate->MayNamedAccess(*object, *name, v8::ACCESS_SET)) {
+    if (!isolate->MayNamedAccessWrapper(object, name, v8::ACCESS_SET)) {
       return SetPropertyWithFailedAccessCheck(object, lookup, name, value,
                                               true, strict_mode);
     }
@@ -4180,7 +4181,7 @@ Handle<Object> JSObject::SetLocalPropertyIgnoreAttributes(
 
   // Check access rights if needed.
   if (object->IsAccessCheckNeeded()) {
-    if (!isolate->MayNamedAccess(*object, *name, v8::ACCESS_SET)) {
+    if (!isolate->MayNamedAccessWrapper(object, name, v8::ACCESS_SET)) {
       return SetPropertyWithFailedAccessCheck(object, &lookup, name, value,
                                               false, kNonStrictMode);
     }
@@ -5164,8 +5165,8 @@ Handle<Object> JSObject::DeleteElement(Handle<JSObject> object,
 
   // Check access rights if needed.
   if (object->IsAccessCheckNeeded() &&
-      !isolate->MayIndexedAccess(*object, index, v8::ACCESS_DELETE)) {
-    isolate->ReportFailedAccessCheck(*object, v8::ACCESS_DELETE);
+      !isolate->MayIndexedAccessWrapper(object, index, v8::ACCESS_DELETE)) {
+    isolate->ReportFailedAccessCheckWrapper(object, v8::ACCESS_DELETE);
     RETURN_HANDLE_IF_SCHEDULED_EXCEPTION(isolate, Object);
     return factory->false_value();
   }
@@ -5228,8 +5229,8 @@ Handle<Object> JSObject::DeleteProperty(Handle<JSObject> object,
 
   // Check access rights if needed.
   if (object->IsAccessCheckNeeded() &&
-      !isolate->MayNamedAccess(*object, *name, v8::ACCESS_DELETE)) {
-    isolate->ReportFailedAccessCheck(*object, v8::ACCESS_DELETE);
+      !isolate->MayNamedAccessWrapper(object, name, v8::ACCESS_DELETE)) {
+    isolate->ReportFailedAccessCheckWrapper(object, v8::ACCESS_DELETE);
     RETURN_HANDLE_IF_SCHEDULED_EXCEPTION(isolate, Object);
     return isolate->factory()->false_value();
   }
@@ -5458,10 +5459,10 @@ Handle<Object> JSObject::PreventExtensions(Handle<JSObject> object) {
   if (!object->map()->is_extensible()) return object;
 
   if (object->IsAccessCheckNeeded() &&
-      !isolate->MayNamedAccess(*object,
-                               isolate->heap()->undefined_value(),
-                               v8::ACCESS_KEYS)) {
-    isolate->ReportFailedAccessCheck(*object, v8::ACCESS_KEYS);
+      !isolate->MayNamedAccessWrapper(object,
+                                      isolate->factory()->undefined_value(),
+                                      v8::ACCESS_KEYS)) {
+    isolate->ReportFailedAccessCheckWrapper(object, v8::ACCESS_KEYS);
     RETURN_HANDLE_IF_SCHEDULED_EXCEPTION(isolate, Object);
     return isolate->factory()->false_value();
   }
@@ -5538,10 +5539,10 @@ Handle<Object> JSObject::Freeze(Handle<JSObject> object) {
 
   Isolate* isolate = object->GetIsolate();
   if (object->IsAccessCheckNeeded() &&
-      !isolate->MayNamedAccess(*object,
-                               isolate->heap()->undefined_value(),
-                               v8::ACCESS_KEYS)) {
-    isolate->ReportFailedAccessCheck(*object, v8::ACCESS_KEYS);
+      !isolate->MayNamedAccessWrapper(object,
+                                      isolate->factory()->undefined_value(),
+                                      v8::ACCESS_KEYS)) {
+    isolate->ReportFailedAccessCheckWrapper(object, v8::ACCESS_KEYS);
     RETURN_HANDLE_IF_SCHEDULED_EXCEPTION(isolate, Object);
     return isolate->factory()->false_value();
   }
@@ -6201,9 +6202,10 @@ void JSObject::DefinePropertyAccessor(Handle<JSObject> object,
 }
 
 
-bool JSObject::CanSetCallback(Name* name) {
-  ASSERT(!IsAccessCheckNeeded() ||
-         GetIsolate()->MayNamedAccess(this, name, v8::ACCESS_SET));
+bool JSObject::CanSetCallback(Handle<JSObject> object, Handle<Name> name) {
+  Isolate* isolate = object->GetIsolate();
+  ASSERT(!object->IsAccessCheckNeeded() ||
+         isolate->MayNamedAccessWrapper(object, name, v8::ACCESS_SET));
 
   // Check if there is an API defined callback object which prohibits
   // callback overwriting in this object or its prototype chain.
@@ -6211,15 +6213,15 @@ bool JSObject::CanSetCallback(Name* name) {
   // certain accessors such as window.location should not be allowed
   // to be overwritten because allowing overwriting could potentially
   // cause security problems.
-  LookupResult callback_result(GetIsolate());
-  LookupCallbackProperty(name, &callback_result);
+  LookupResult callback_result(isolate);
+  object->LookupCallbackProperty(*name, &callback_result);
   if (callback_result.IsFound()) {
-    Object* obj = callback_result.GetCallbackObject();
-    if (obj->IsAccessorInfo()) {
-      return !AccessorInfo::cast(obj)->prohibits_overwriting();
+    Object* callback_obj = callback_result.GetCallbackObject();
+    if (callback_obj->IsAccessorInfo()) {
+      return !AccessorInfo::cast(callback_obj)->prohibits_overwriting();
     }
-    if (obj->IsAccessorPair()) {
-      return !AccessorPair::cast(obj)->prohibits_overwriting();
+    if (callback_obj->IsAccessorPair()) {
+      return !AccessorPair::cast(callback_obj)->prohibits_overwriting();
     }
   }
   return true;
@@ -6326,8 +6328,8 @@ void JSObject::DefineAccessor(Handle<JSObject> object,
   Isolate* isolate = object->GetIsolate();
   // Check access rights if needed.
   if (object->IsAccessCheckNeeded() &&
-      !isolate->MayNamedAccess(*object, *name, v8::ACCESS_SET)) {
-    isolate->ReportFailedAccessCheck(*object, v8::ACCESS_SET);
+      !isolate->MayNamedAccessWrapper(object, name, v8::ACCESS_SET)) {
+    isolate->ReportFailedAccessCheckWrapper(object, v8::ACCESS_SET);
     return;
   }
 
@@ -6351,7 +6353,7 @@ void JSObject::DefineAccessor(Handle<JSObject> object,
   // Try to flatten before operating on the string.
   if (name->IsString()) String::cast(*name)->TryFlatten();
 
-  if (!object->CanSetCallback(*name)) return;
+  if (!JSObject::CanSetCallback(object, name)) return;
 
   uint32_t index = 0;
   bool is_element = name->AsArrayIndex(&index);
@@ -6518,8 +6520,8 @@ Handle<Object> JSObject::SetAccessor(Handle<JSObject> object,
 
   // Check access rights if needed.
   if (object->IsAccessCheckNeeded() &&
-      !isolate->MayNamedAccess(*object, *name, v8::ACCESS_SET)) {
-    isolate->ReportFailedAccessCheck(*object, v8::ACCESS_SET);
+      !isolate->MayNamedAccessWrapper(object, name, v8::ACCESS_SET)) {
+    isolate->ReportFailedAccessCheckWrapper(object, v8::ACCESS_SET);
     RETURN_HANDLE_IF_SCHEDULED_EXCEPTION(isolate, Object);
     return factory->undefined_value();
   }
@@ -6538,7 +6540,9 @@ Handle<Object> JSObject::SetAccessor(Handle<JSObject> object,
   // Try to flatten before operating on the string.
   if (name->IsString()) FlattenString(Handle<String>::cast(name));
 
-  if (!object->CanSetCallback(*name)) return factory->undefined_value();
+  if (!JSObject::CanSetCallback(object, name)) {
+    return factory->undefined_value();
+  }
 
   uint32_t index = 0;
   bool is_element = name->AsArrayIndex(&index);
@@ -6602,8 +6606,8 @@ Handle<Object> JSObject::GetAccessor(Handle<JSObject> object,
 
   // Check access rights if needed.
   if (object->IsAccessCheckNeeded() &&
-      !isolate->MayNamedAccess(*object, *name, v8::ACCESS_HAS)) {
-    isolate->ReportFailedAccessCheck(*object, v8::ACCESS_HAS);
+      !isolate->MayNamedAccessWrapper(object, name, v8::ACCESS_HAS)) {
+    isolate->ReportFailedAccessCheckWrapper(object, v8::ACCESS_HAS);
     RETURN_HANDLE_IF_SCHEDULED_EXCEPTION(isolate, Object);
     return isolate->factory()->undefined_value();
   }
@@ -12514,8 +12518,8 @@ Handle<Object> JSObject::SetElement(Handle<JSObject> object,
 
   // Check access rights if needed.
   if (object->IsAccessCheckNeeded()) {
-    if (!isolate->MayIndexedAccess(*object, index, v8::ACCESS_SET)) {
-      isolate->ReportFailedAccessCheck(*object, v8::ACCESS_SET);
+    if (!isolate->MayIndexedAccessWrapper(object, index, v8::ACCESS_SET)) {
+      isolate->ReportFailedAccessCheckWrapper(object, v8::ACCESS_SET);
       RETURN_HANDLE_IF_SCHEDULED_EXCEPTION(isolate, Object);
       return value;
     }
@@ -13343,8 +13347,8 @@ bool JSObject::HasRealNamedProperty(Handle<JSObject> object,
   SealHandleScope shs(isolate);
   // Check access rights if needed.
   if (object->IsAccessCheckNeeded()) {
-    if (!isolate->MayNamedAccess(*object, *key, v8::ACCESS_HAS)) {
-      isolate->ReportFailedAccessCheck(*object, v8::ACCESS_HAS);
+    if (!isolate->MayNamedAccessWrapper(object, key, v8::ACCESS_HAS)) {
+      isolate->ReportFailedAccessCheckWrapper(object, v8::ACCESS_HAS);
       return false;
     }
   }
@@ -13360,8 +13364,8 @@ bool JSObject::HasRealElementProperty(Handle<JSObject> object, uint32_t index) {
   SealHandleScope shs(isolate);
   // Check access rights if needed.
   if (object->IsAccessCheckNeeded()) {
-    if (!isolate->MayIndexedAccess(*object, index, v8::ACCESS_HAS)) {
-      isolate->ReportFailedAccessCheck(*object, v8::ACCESS_HAS);
+    if (!isolate->MayIndexedAccessWrapper(object, index, v8::ACCESS_HAS)) {
+      isolate->ReportFailedAccessCheckWrapper(object, v8::ACCESS_HAS);
       return false;
     }
   }
@@ -13385,8 +13389,8 @@ bool JSObject::HasRealNamedCallbackProperty(Handle<JSObject> object,
   SealHandleScope shs(isolate);
   // Check access rights if needed.
   if (object->IsAccessCheckNeeded()) {
-    if (!isolate->MayNamedAccess(*object, *key, v8::ACCESS_HAS)) {
-      isolate->ReportFailedAccessCheck(*object, v8::ACCESS_HAS);
+    if (!isolate->MayNamedAccessWrapper(object, key, v8::ACCESS_HAS)) {
+      isolate->ReportFailedAccessCheckWrapper(object, v8::ACCESS_HAS);
       return false;
     }
   }
diff --git a/src/objects.h b/src/objects.h
index 32741572b3..089d11dd0b 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -2923,7 +2923,7 @@ class JSObject: public JSReceiver {
   // Gets the current elements capacity and the number of used elements.
   void GetElementsCapacityAndUsage(int* capacity, int* used);
 
-  bool CanSetCallback(Name* name);
+  static bool CanSetCallback(Handle<JSObject> object, Handle<Name> name);
   static void SetElementCallback(Handle<JSObject> object,
                                  uint32_t index,
                                  Handle<Object> structure,
diff --git a/src/runtime.cc b/src/runtime.cc
index c49d24522d..2b94158db7 100644
--- a/src/runtime.cc
+++ b/src/runtime.cc
@@ -1621,7 +1621,8 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_GetPrototype) {
         !isolate->MayNamedAccessWrapper(Handle<JSObject>::cast(obj),
                                         isolate->factory()->proto_string(),
                                         v8::ACCESS_GET)) {
-      isolate->ReportFailedAccessCheck(JSObject::cast(*obj), v8::ACCESS_GET);
+      isolate->ReportFailedAccessCheckWrapper(Handle<JSObject>::cast(obj),
+                                              v8::ACCESS_GET);
       RETURN_IF_SCHEDULED_EXCEPTION(isolate);
       return isolate->heap()->undefined_value();
     }
@@ -1747,7 +1748,7 @@ static AccessCheckResult CheckPropertyAccess(Handle<JSObject> obj,
       return ACCESS_ALLOWED;
     }
 
-    obj->GetIsolate()->ReportFailedAccessCheck(*obj, access_type);
+    obj->GetIsolate()->ReportFailedAccessCheckWrapper(obj, access_type);
     return ACCESS_FORBIDDEN;
   }
 
@@ -1786,7 +1787,7 @@ static AccessCheckResult CheckPropertyAccess(Handle<JSObject> obj,
       break;
   }
 
-  isolate->ReportFailedAccessCheck(*obj, access_type);
+  isolate->ReportFailedAccessCheckWrapper(obj, access_type);
   return ACCESS_FORBIDDEN;
 }
 
@@ -5743,10 +5744,10 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_GetLocalPropertyNames) {
   if (obj->IsJSGlobalProxy()) {
     // Only collect names if access is permitted.
     if (obj->IsAccessCheckNeeded() &&
-        !isolate->MayNamedAccess(*obj,
-                                 isolate->heap()->undefined_value(),
-                                 v8::ACCESS_KEYS)) {
-      isolate->ReportFailedAccessCheck(*obj, v8::ACCESS_KEYS);
+        !isolate->MayNamedAccessWrapper(obj,
+                                        isolate->factory()->undefined_value(),
+                                        v8::ACCESS_KEYS)) {
+      isolate->ReportFailedAccessCheckWrapper(obj, v8::ACCESS_KEYS);
       RETURN_IF_SCHEDULED_EXCEPTION(isolate);
       return *isolate->factory()->NewJSArray(0);
     }
@@ -5763,10 +5764,10 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_GetLocalPropertyNames) {
   for (int i = 0; i < length; i++) {
     // Only collect names if access is permitted.
     if (jsproto->IsAccessCheckNeeded() &&
-        !isolate->MayNamedAccess(*jsproto,
-                                 isolate->heap()->undefined_value(),
-                                 v8::ACCESS_KEYS)) {
-      isolate->ReportFailedAccessCheck(*jsproto, v8::ACCESS_KEYS);
+        !isolate->MayNamedAccessWrapper(jsproto,
+                                        isolate->factory()->undefined_value(),
+                                        v8::ACCESS_KEYS)) {
+      isolate->ReportFailedAccessCheckWrapper(jsproto, v8::ACCESS_KEYS);
       RETURN_IF_SCHEDULED_EXCEPTION(isolate);
       return *isolate->factory()->NewJSArray(0);
     }
@@ -5914,9 +5915,10 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_LocalKeys) {
   if (object->IsJSGlobalProxy()) {
     // Do access checks before going to the global object.
     if (object->IsAccessCheckNeeded() &&
-        !isolate->MayNamedAccess(*object, isolate->heap()->undefined_value(),
-                             v8::ACCESS_KEYS)) {
-      isolate->ReportFailedAccessCheck(*object, v8::ACCESS_KEYS);
+        !isolate->MayNamedAccessWrapper(object,
+                                        isolate->factory()->undefined_value(),
+                                        v8::ACCESS_KEYS)) {
+      isolate->ReportFailedAccessCheckWrapper(object, v8::ACCESS_KEYS);
       RETURN_IF_SCHEDULED_EXCEPTION(isolate);
       return *isolate->factory()->NewJSArray(0);
     }
@@ -14718,8 +14720,9 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_IsAccessAllowedForObserver) {
   Handle<Object> key = args.at<Object>(2);
   SaveContext save(isolate);
   isolate->set_context(observer->context());
-  if (!isolate->MayNamedAccess(*object, isolate->heap()->undefined_value(),
-                               v8::ACCESS_KEYS)) {
+  if (!isolate->MayNamedAccessWrapper(object,
+                                      isolate->factory()->undefined_value(),
+                                      v8::ACCESS_KEYS)) {
     return isolate->heap()->false_value();
   }
   bool access_allowed = false;
@@ -14727,11 +14730,12 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_IsAccessAllowedForObserver) {
   if (key->ToArrayIndex(&index) ||
       (key->IsString() && String::cast(*key)->AsArrayIndex(&index))) {
     access_allowed =
-        isolate->MayIndexedAccess(*object, index, v8::ACCESS_GET) &&
-        isolate->MayIndexedAccess(*object, index, v8::ACCESS_HAS);
+        isolate->MayIndexedAccessWrapper(object, index, v8::ACCESS_GET) &&
+        isolate->MayIndexedAccessWrapper(object, index, v8::ACCESS_HAS);
   } else {
-    access_allowed = isolate->MayNamedAccess(*object, *key, v8::ACCESS_GET) &&
-        isolate->MayNamedAccess(*object, *key, v8::ACCESS_HAS);
+    access_allowed =
+        isolate->MayNamedAccessWrapper(object, key, v8::ACCESS_GET) &&
+        isolate->MayNamedAccessWrapper(object, key, v8::ACCESS_HAS);
   }
   return isolate->heap()->ToBoolean(access_allowed);
 }