pecial">)</span> <span class="special">{</span>
      <span class="identifier">std</span><span class="special">::</span><span class="identifier">swap</span><span class="special">(</span><span class="identifier">root1</span><span class="special">,</span> <span class="identifier">root2</span><span class="special">);</span>
    <span class="special">}</span>
    <span class="identifier">BOOST_TEST_INFO_SCOPE</span><span class="special">(</span><span class="string">"root1 = "</span> <span class="special">&lt;&l