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  <h1>Debugging Assignment</h1>

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  <h2>Due: Wednesday, March 21, 2007</h2>

  <p>This assignment is intended to give you a chance to demonstrate that you know how to step through code 
  and verfiy code execution.  Use the method described in Chapter 4 from 
  <a href="/courses/cs190/2007/documents/restricted/Writing%20Solid%20Code.pdf">Writing Solid Code</a>.</p>

  <ol>
    <li>Download the <a href="minesweeper_debug.tar">Minesweeper source</a>, decompress it (<code>tar -xzf 
    minesweeper.tgz</code>), and <code>make</code> an executable.</li>
    <li>Re-read Maguire's description of how to step through code.</li>
    <li>Set up to record your debugging session (use "script" or cut-and-paste).  You can use gdb or totalview, 
    but you must do it in a mode where you can record a transcript.</li>
    <li>Step through the method <code>MineField::populate</code> in the debugger (this method is called every 
    time you start a new game, after selecting the field size).  Follow the guidelines from <em>Writing Solid 
    Code</em> chapter 4 on how to do this.  Check variable values and other state information before and after 
    execution of each line and verify that the line did what it should.  Be sure to step through <em>all</em> 
    the lines of code, even if that means fixing some of the errors as you go along.  (It is only necessary to 
    step through the populate function and not the subfunctions called by it.)</li>
    <li>Add concise comments to your script explaining what bugs you found and how you fixed them.</li>
    <li>Hand in your debugger transcript.</li>
  </ol>

  <p>The rubric for this assignment is available <a href="rubrics/DebuggingRubric.doc">here</a>.</p>

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