Fix redefining of attributes on aliased arguments.

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 1933 matching lines @@
     if (!maybe_result->To(&info)) return maybe_result;
   }
   info->set_ic_total_count(0);
   info->set_ic_with_typeinfo_count(0);
   info->set_type_feedback_cells(TypeFeedbackCells::cast(empty_fixed_array()),
                                 SKIP_WRITE_BARRIER);
   return info;
 }
 
 
+MaybeObject* Heap::AllocateAliasedArgumentsEntry(int aliased_context_slot) {
+  AliasedArgumentsEntry* entry;
+  { MaybeObject* maybe_result = AllocateStruct(ALIASED_ARGUMENTS_ENTRY_TYPE);
+    if (!maybe_result->To(&entry)) return maybe_result;
+  }
+  entry->set_aliased_context_slot(aliased_context_slot);
+  return entry;
+}
+
+
 const Heap::StringTypeTable Heap::string_type_table[] = {
 #define STRING_TYPE_ELEMENT(type, size, name, camel_name)                      \
   {type, size, k##camel_name##MapRootIndex},
   STRING_TYPE_LIST(STRING_TYPE_ELEMENT)
 #undef STRING_TYPE_ELEMENT
 };
 
 
 const Heap::ConstantSymbolTable Heap::constant_symbol_table[] = {
 #define CONSTANT_SYMBOL_ELEMENT(name, contents)                                \
@@ skipping 4966 matching lines @@
   isolate_->heap()->store_buffer()->Compact();
   isolate_->heap()->store_buffer()->Filter(MemoryChunk::ABOUT_TO_BE_FREED);
   for (chunk = chunks_queued_for_free_; chunk != NULL; chunk = next) {
     next = chunk->next_chunk();
     isolate_->memory_allocator()->Free(chunk);
   }
   chunks_queued_for_free_ = NULL;
 }
 
 } }  // namespace v8::internal