ES6 symbols: filter symbols form for-in loops and Object.keys

src/runtime.cc

 // Copyright 2012 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 4855 matching lines @@
       GetKeysInFixedArrayFor(object, LOCAL_ONLY, &threw);
   if (threw) return Failure::Exception();
 
   // Some fast paths through GetKeysInFixedArrayFor reuse a cached
   // property array and since the result is mutable we have to create
   // a fresh clone on each invocation.
   int length = contents->length();
   Handle<FixedArray> copy = isolate->factory()->NewFixedArray(length);
   for (int i = 0; i < length; i++) {
     Object* entry = contents->get(i);
-    if (entry->IsName()) {
+    if (entry->IsString()) {
       copy->set(i, entry);
     } else {
       ASSERT(entry->IsNumber());
       HandleScope scope(isolate);
       Handle<Object> entry_handle(entry, isolate);
       Handle<Object> entry_str =
           isolate->factory()->NumberToString(entry_handle);
       copy->set(i, *entry_str);
     }
   }
@@ skipping 8427 matching lines @@
     // Handle last resort GC and make sure to allow future allocations
     // to grow the heap without causing GCs (if possible).
     isolate->counters()->gc_last_resort_from_js()->Increment();
     isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags,
                                        "Runtime::PerformGC");
   }
 }
 
 
 } }  // namespace v8::internal