Implement zone-allocated types

src/list-inl.h

 // Copyright 2006-2009 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 148 matching lines @@
   // We don't call Initialize(0) since that requires passing a Zone,
   // which we don't really need.
   data_ = NULL;
   capacity_ = 0;
   length_ = 0;
 }
 
 
 template<typename T, class P>
 void List<T, P>::Rewind(int pos) {
+  ASSERT(pos <= length_);
   length_ = pos;
 }
 
 
 template<typename T, class P>
 void List<T, P>::Trim(P alloc) {
   if (length_ < capacity_ / 4) {
     Resize(capacity_ / 2, alloc);
   }
 }
@@ skipping 94 matching lines @@
 
 template <typename T>
 int SortedListBSearch(const List<T>& list, T elem) {
   return SortedListBSearch<T, ElementCmp<T> > (list, ElementCmp<T>(elem));
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_LIST_INL_H_