">node_base</span><span class="special">*</span></code> moves it past this base subobject to who-knows-where?
          The most we can do with that incremented position is to compare another
          <code class="computeroutput"><span class="identifier">node_base</span><span class="special">*</span></code>
          to it. In other words, the original iterator traverses a one-element array.
        </p>
</div>
<p>
          You probably didn't think of it this way, but the <code class="computeroutput"><sp