   <td>Add support for preprocessing directives elifdef and elifndef</td>
      <td><a href="https://wg21.link/P2334R1">P2334R1</a></td>
      <td class="full" align="center">Clang 13</td>
    </tr>
    <tr>
      <td>Extend init-statement to allow alias-declaration</td>
      <td><a href="https://wg21.link/P2360R0">P2360R0</a></td>
      <td class="full" align="center">Clang 14</td>
    </tr>
    <tr>
      <td>auto(x): decay-copy in the language</td>
      <td><a href="https://wg21.link/P0849R8">P0849R8</