title: How did they write MSVC++ Debugger?
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/11798506/c-or-gcc-is-like-chicken-or-the-egg">&ldquo;C or gcc&rdquo; is like &ldquo;Chicken or the egg&rdquo; ? :(</a>  </p>
  </blockquote>
  
  
  
  <p>if the visual c++ debugger is the tool for debugging a running program, what debugs the debugger while it's developed?
  Chicken Egg dilemma ? How did they debug Visual C++ Debugger ?</p>