Fix memory leak in regexp macro assembler. If the buffer has been...

src/regexp-macro-assembler-irregexp.cc

 // Copyright 2008-2009 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 29 matching lines @@
 RegExpMacroAssemblerIrregexp::RegExpMacroAssemblerIrregexp(Vector<byte> buffer)
     : buffer_(buffer),
       pc_(0),
       own_buffer_(false),
       advance_current_end_(kInvalidPC) {
 }
 
 
 RegExpMacroAssemblerIrregexp::~RegExpMacroAssemblerIrregexp() {
   if (backtrack_.is_linked()) backtrack_.Unuse();
+  if (own_buffer_) buffer_.Dispose();
 }
 
 
 RegExpMacroAssemblerIrregexp::IrregexpImplementation
 RegExpMacroAssemblerIrregexp::Implementation() {
   return kBytecodeImplementation;
 }
 
 
 void RegExpMacroAssemblerIrregexp::Bind(Label* l) {
@@ skipping 423 matching lines @@
   buffer_ = Vector<byte>::New(old_buffer.length() * 2);
   own_buffer_ = true;
   memcpy(buffer_.start(), old_buffer.start(), old_buffer.length());
   if (old_buffer_was_our_own) {
     old_buffer.Dispose();
   }
 }
 
 
 } }  // namespace v8::internal