lass="identifier">T</span><span class="special">)</span> <span class="keyword">const</span>  <span class="special">{</span> <span class="keyword">return</span> <span class="identifier">T</span><span class="special">();</span> <span class="special">}};</span>

    <span class="keyword">struct</span>  <span class="identifier">test11</span> <span class="special">{</span> <span class="keyword">int</span>  <span class="identifier">func</span><span class="special">(</span><span class="keyword">double</span><span 