lass="n">o</span><span class="p">.</span><span class="n">_fd</span> <span class="o">=</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span> <span class="p">}</span>
  <span class="n">file_handle</span> <span class="o">&amp;</span><span class="k">operator</span><span class="o">=</span><span class="p">(</span><span class="k">const</span> <span class="n">file_handle</span> <span class="o">&amp;</span><span class="p">)</span> <span class="o">=</span> <span class="k">delete</span><span