identifier">ec</span> <span class="special">&amp;&amp;</span> <span class="identifier">n</span> <span class="special">&lt;</span> <span class="identifier">size</span><span class="special">)</span>
            <span class="identifier">ec</span> <span class="special">=</span> <span class="identifier">error</span><span class="special">::</span><span class="identifier">extra_data</span><span class="special">;</span>
        <span class="keyword">return</span> <span class="identifier">n</span><span class="specia