trivial moves on clang.
        </li>
<li class="listitem">
          Correct some mismatched <code class="computeroutput"><span class="preprocessor">#pragam</span>
          <span class="identifier">warning</span> <span class="identifier">push</span><span class="special">/</span><span class="identifier">pop</span></code>.
        </li>
<li class="listitem">
          Improve <a class="link" href="reference/is_virtual_base_of.html" title="is_virtual_base_of">is_virtual_base_of</a>
          to give more rob