Fix keyed access of primitive objects in the runtime.

src/objects-inl.h

 // Copyright 2012 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.
 //
 // Review notes:
 //
 // - The use of macros in these inline functions may seem superfluous
 // but it is absolutely needed to make sure gcc generates optimal
 // code. gcc is not happy when attempting to inline too deep.
 //
@@ skipping 1155 matching lines @@
 
 
 MaybeHandle<Object> Object::GetElement(Isolate* isolate, Handle<Object> object,
                                        uint32_t index,
                                        LanguageMode language_mode) {
   LookupIterator it(isolate, object, index);
   return GetProperty(&it, language_mode);
 }
 
 
+MaybeHandle<Object> Object::SetElement(Isolate* isolate, Handle<Object> object,
+                                       uint32_t index, Handle<Object> value,
+                                       LanguageMode language_mode) {
+  LookupIterator it(isolate, object, index);
+  return SetProperty(&it, value, language_mode, MAY_BE_STORE_FROM_KEYED);
+}
+
+
 Handle<Object> Object::GetPrototypeSkipHiddenPrototypes(
     Isolate* isolate, Handle<Object> receiver) {
   PrototypeIterator iter(isolate, receiver);
   while (!iter.IsAtEnd(PrototypeIterator::END_AT_NON_HIDDEN)) {
     if (PrototypeIterator::GetCurrent(iter)->IsJSProxy()) {
       return PrototypeIterator::GetCurrent(iter);
     }
     iter.Advance();
   }
   return PrototypeIterator::GetCurrent(iter);
@@ skipping 6129 matching lines @@
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 #undef NOBARRIER_READ_BYTE_FIELD
 #undef NOBARRIER_WRITE_BYTE_FIELD
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_