 <span class="string">"fail"</span> <span class="special">&lt;&lt;</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span>
<span class="special">}</span>

<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">P</span><span class="special">&gt;</span>
<span class="keyword">void</span> <span class="identifier">test_phrase_parser</span><span class="