Fix bug in object literals with large array indexes as strings.

src/hashmap.h

 // Copyright 2008 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 31 matching lines @@
 };
 
 
 class HashMap {
  public:
   static Allocator DefaultAllocator;
 
   typedef bool (*MatchFun) (void* key1, void* key2);
 
   // Dummy constructor.  This constructor doesn't set up the hash
-  // map properly so don't use it unless you have good reason.
+  // map properly so don't use it unless you have good reason (e.g.,
+  // you know that the HashMap will never be used).
   HashMap();
 
   // initial_capacity is the size of the initial hash map;
   // it must be a power of 2 (and thus must not be 0).
   HashMap(MatchFun match,
           Allocator* allocator = &DefaultAllocator,
           uint32_t initial_capacity = 8);
 
   ~HashMap();
 
@@ skipping 48 matching lines @@
   Entry* map_end() const { return map_ + capacity_; }
   Entry* Probe(void* key, uint32_t hash);
   void Initialize(uint32_t capacity);
   void Resize();
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HASHMAP_H_