Removed some unsafe uses of StringShape....

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 772 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));
   StringShape shape(*source);
-  source->TryFlatten(shape);
   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.
   FunctionLiteral* result = NULL;
@@ skipping 2451 matching lines @@
                        start_position,
                        is_expression);
   return result;
 }
 
 
 #undef NEW
 
 
 } }  // namespace v8::internal