s, Callbacks, and
    Checker Class Structure</a>.
    <li> What checker-specific data needs to be stored as part of the program
    state (if any). This should be minimized as much as possible. More detail about
    implementing custom program state is given in section <a
    href="#extendingstates">Custom Program States</a>.
  </ul>


<h2 id=registration>Checker Registration</h2>
  All checker implementation files are located in
  <tt>clang/lib/StaticAnalyzer/Checkers</tt> folder. The steps below describe