> <span class="special">&lt;</span><span class="identifier">ostream</span><span class="special">&gt;</span>    <span class="comment">/* for std::ostream */</span>

<span class="keyword">class</span> <span class="identifier">fdoutbuf</span>
  <span class="special">:</span> <span class="keyword">public</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">streambuf</span>
<span class="special">{</span>
<span class="keyword">public</span><span class="special">:</span