crash with pure virtual function call

Applying this xslt to xml without "NOTEXISTS" node causes a pure virtual function call crash

<?xml version="1.0" encoding="windows-1251"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0" xmlns:external="http://ExternalFunction.xalan-c++.xml.apache.org" xmlns:xalan="http://xml.apache.org/xalan">
<xsl:output method="xml" omit-xml-declaration="no" encoding="windows-1251"/>
<xsl:template match="*">
<xsl:value-of select="NOTEXISTS|xalan:nodeset(concat('aaa','bbb'))"/>
</xsl:template>
</xsl:stylesheet>