cator&lt;T&gt;</code>. Secondly
    (and more importantly), users that specify allocators instead of
    implicitly using the default allocator would not get debugging
    containers. Thus this solution fails the <span class="emphasis"><em>correctness</em></span>
    criteria.</p></li><li class="listitem"><p><span class="emphasis"><em>Define debug containers in another namespace, and employ
      a <code class="code">using</code> declaration (or directive)</em></span>: This is an
      enticing option, beca