class="identifier">multi_pass</span></code>
        is implemented any allocated data members in <code class="computeroutput"><span class="identifier">shared</span></code>
        should <span class="underline">not</span> be deep copied in a copy
        constructor of <code class="computeroutput"><span class="identifier">shared</span></code>.
      </p>
<h5>
<a name="spirit.support.multi_pass.h10"></a>
        <span class="phrase"><a name="spirit.support.multi_pass.ownershippolicy"></a></span><a class="lin