ES6 symbols: implement name property

src/heap-inl.h

 // 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 381 matching lines @@
   // other object types are promoted to old pointer space.  We do not use
   // object->IsHeapNumber() and object->IsSeqString() because we already
   // know that object has the heap object tag.
 
   // These objects are never allocated in new space.
   ASSERT(type != MAP_TYPE);
   ASSERT(type != CODE_TYPE);
   ASSERT(type != ODDBALL_TYPE);
   ASSERT(type != JS_GLOBAL_PROPERTY_CELL_TYPE);
 
-  if (type < FIRST_NONSTRING_TYPE) {
+  if (type <= LAST_NAME_TYPE) {
+    if (type == SYMBOL_TYPE) return OLD_POINTER_SPACE;
+    ASSERT(type < FIRST_NONSTRING_TYPE);
     // There are four string representations: sequential strings, external
     // strings, cons strings, and sliced strings.
     // Only the latter two contain non-map-word pointers to heap objects.
     return ((type & kIsIndirectStringMask) == kIsIndirectStringTag)
         ? OLD_POINTER_SPACE
         : OLD_DATA_SPACE;
   } else {
     return (type <= LAST_DATA_TYPE) ? OLD_DATA_SPACE : OLD_POINTER_SPACE;
   }
 }
@@ skipping 453 matching lines @@
 AssertNoAllocation::~AssertNoAllocation() { }
 DisableAssertNoAllocation::DisableAssertNoAllocation() { }
 DisableAssertNoAllocation::~DisableAssertNoAllocation() { }
 
 #endif
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HEAP_INL_H_