llocator </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="classipc_1_1shm_1_1stl_1_1Stateless__allocator.html">Stateless_allocator</a>&lt; U, Arena &gt; &amp;&amp;&#160;</td>
          <td class="paramname"><em>src_ignored</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
  </td>
  <td class="mlabels-right">
<span class="mlabels"><span class="mlabel">explicit</span></span>  </td>
  </tr>
</table>
</div><div class="memdoc">

<p>Allocator concept requirement fo