cit virtual overrides</td>
      <td><a href="https://wg21.link/n2928">N2928</a>
      <br><a href="https://wg21.link/n3206">N3206</a>
      <br><a href="https://wg21.link/n3272">N3272</a></td>
      <td class="full" align="center">Clang 3.0</td>
    </tr>
    <tr>
      <td>Minimal support for garbage collection and reachability-based leak detection</td>
      <td><a href="https://wg21.link/n2670">N2670</a></td>
      <td class="na" align="center">N/A <a href="#n2670">(2)</a></td>
    </tr>
    <tr>
      