 class="n">c_str</span><span class="p">());</span>
<span class="p">}</span>

<span class="c1">// 3rd-stage function</span>
<span class="kt">void</span><span class="w"> </span><span class="nf">f3</span><span class="p">(</span><span class="k">const</span><span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">string</span><span class="o">&amp;</span><span class="w"> </span><span class="n">node</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<sp