</span><span class="special">;</span>
    <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">call_traits</span><span class="special">&lt;</span><span class="identifier">second_type</span><span class="special">&gt;::</span><span class="identifier">const_reference</span> <span class="identifier">second_const_reference</span><span class="special">;</span>

             <span class="identifier">compressed_pair</span><span class="special">()</span> <span class="sp