pan>
   <span class="keyword">else</span>
   <span class="special">{</span>
      <span class="keyword">throw</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">runtime_error</span><span class="special">(</span><span class="string">"Invalid pathname"</span><span class="special">);</span>
   <span class="special">}</span>
<span class="special">}</span>
</pre>
<h5>
<a name="boost_regex.ref.non_std_strings.icu.unicode_algo.h1"></a>
            <span class="phrase"