Fix bug where strings were not flattened before regexp.

src/parser.cc

 // Copyright 2006-2008 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 1074 matching lines @@
 FunctionLiteral* Parser::ParseProgram(Handle<String> source,
                                       unibrow::CharacterStream* stream,
                                       bool in_global_context) {
   ZoneScope zone_scope(DONT_DELETE_ON_EXIT);
 
   StatsRateScope timer(&Counters::parse);
   StringShape shape(*source);
   Counters::total_parse_size.Increment(source->length(shape));
 
   // Initialize parser state.
-  source->TryFlatten(shape);
+  source->TryFlattenIfNotFlat(shape);
   scanner_.Init(source, stream, 0);
   ASSERT(target_stack_ == NULL);
 
   // Compute the parsing mode.
   mode_ = FLAG_lazy ? PARSE_LAZILY : PARSE_EAGERLY;
   if (allow_natives_syntax_ || extension_ != NULL) mode_ = PARSE_EAGERLY;
 
   Scope::Type type =
     in_global_context
       ? Scope::GLOBAL_SCOPE
@@ skipping 28 matching lines @@
   return result;
 }
 
 
 FunctionLiteral* Parser::ParseLazy(Handle<String> source,
                                    Handle<String> name,
                                    int start_position,
                                    bool is_expression) {
   ZoneScope zone_scope(DONT_DELETE_ON_EXIT);
   StatsRateScope timer(&Counters::parse_lazy);
-  source->TryFlatten(StringShape(*source));
+  source->TryFlattenIfNotFlat(StringShape(*source));
   StringShape shape(*source);
   Counters::total_parse_size.Increment(source->length(shape));
   SafeStringInputBuffer buffer(source.location());
 
   // Initialize parser state.
   scanner_.Init(source, &buffer, start_position);
   ASSERT(target_stack_ == NULL);
   mode_ = PARSE_EAGERLY;
 
   // Place holder for the result.
@@ skipping 3195 matching lines @@
                        start_position,
                        is_expression);
   return result;
 }
 
 
 #undef NEW
 
 
 } }  // namespace v8::internal