BUG #5079: postgres killed by signal 11 when executing xslt_process function from xml2 contrib module.

The following bug has been logged online:

Bug reference:      5079
Logged by:          dolejsi jiri
Email address:      dolejsi@mail.ctk.cz
PostgreSQL version: 8.4.1
Operating system:   FreeBSD 5.4 or Centos 5.3
Description:        postgres killed by signal 11 when executing xslt_process
function from xml2 contrib module.
Details:

executing following query 2 times crashes postgres server:
select xslt_process('<aaa/>',$$<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="@*|node()">
      <xsl:copy>
         <xsl:apply-templates select="@*|node()"/>
      </xsl:copy>
   </xsl:template>
</xsl:stylesheet>$$)::xml;