l">::</span><span class="identifier">size_t</span> <span class="identifier">size</span> <span class="special">=</span> <span class="identifier">traits_type</span><span class="special">::</span><span class="identifier">default_size</span><span class="special">());</span>

    <span class="identifier">stack_context</span> <span class="identifier">allocate</span><span class="special">();</span>

    <span class="keyword">void</span> <span class="identifier">deallocate</span><span class="special">(</span> <span