Fix pc offset calculation for stack traces

src/frames.h

 // 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 412 matching lines @@
                int offset,
                bool is_constructor)
       : receiver_(receiver),
         function_(function),
         code_(code),
         offset_(offset),
         is_constructor_(is_constructor) { }
   Handle<Object> receiver() { return receiver_; }
   Handle<JSFunction> function() { return function_; }
   Handle<Code> code() { return code_; }
-  Address pc() { return reinterpret_cast<Address>(*code_) + offset_; }
+  Address pc() { return code_->address() + offset_; }
   int offset() { return offset_; }
   bool is_constructor() { return is_constructor_; }
 
   void Print();
 
  private:
   Handle<Object> receiver_;
   Handle<JSFunction> function_;
   Handle<Code> code_;
   int offset_;
@@ skipping 384 matching lines @@
 };
 
 
 // Reads all frames on the current stack and copies them into the current
 // zone memory.
 Vector<StackFrame*> CreateStackMap();
 
 } }  // namespace v8::internal
 
 #endif  // V8_FRAMES_H_