Extending map verification to also verify LastAdded/DescriptorArray consistency.

src/heap.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 4141 matching lines @@
   MaybeObject* maybe_global = Allocate(map, OLD_POINTER_SPACE);
   if (!maybe_global->To(&global)) return maybe_global;
 
   InitializeJSObjectFromMap(global, dictionary, map);
 
   // Create a new map for the global object.
   Map* new_map;
   MaybeObject* maybe_map = map->CopyDropDescriptors();
   if (!maybe_map->To(&new_map)) return maybe_map;
 
-  ASSERT(new_map->LastAdded() == Map::kNoneAdded);
-
   // Set up the global object as a normalized object.
   global->set_map(new_map);
   global->set_properties(dictionary);
 
   // Make sure result is a global object with properties in dictionary.
   ASSERT(global->IsGlobalObject());
   ASSERT(!global->HasFastProperties());
   return global;
 }
 
@@ skipping 3057 matching lines @@
       static_cast<int>(object_sizes_last_time_[index]));
   FIXED_ARRAY_SUB_INSTANCE_TYPE_LIST(ADJUST_LAST_TIME_OBJECT_COUNT)
 #undef ADJUST_LAST_TIME_OBJECT_COUNT
 
   memcpy(object_counts_last_time_, object_counts_, sizeof(object_counts_));
   memcpy(object_sizes_last_time_, object_sizes_, sizeof(object_sizes_));
   ClearObjectStats();
 }
 
 } }  // namespace v8::internal