.html" title="regex_match"><code class="computeroutput"><span class="identifier">regex_match</span></code></a> or was returned from
        a <a class="link" href="regex_iterator.html" title="regex_iterator"><code class="computeroutput"><span class="identifier">regex_iterator</span></code></a>,
        and that the underlying iterators have not been subsequently invalidated.
        Will raise a <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="ident