error, the result must be freed</td></tr></tbody></table></div></div>
        <hr/>
        <div class="refsect2" lang="en"><h3><a name="xmlExpFree"/>xmlExpFree ()</h3><pre class="programlisting">void	xmlExpFree			(<a href="libxml2-xmlregexp.html#xmlExpCtxtPtr">xmlExpCtxtPtr</a> ctxt, <br/>					 <a href="libxml2-xmlregexp.html#xmlExpNodePtr">xmlExpNodePtr</a> exp)<br/>
</pre><p>Dereference the expression</p>
<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"