[xslt] weird func:result/xsl:variable/exsl:node-set interaction

["Brett Kail" <junkaddr hotmail com>]

Hello,

Below is a reduced testcase of what I was trying to accomplish with 
<func:result/>:

<?xml version="1.0"?>

<xsl:stylesheet version="1.0"
                xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
                xmlns:exsl="http://exslt.org/common";
                xmlns:func="http://exslt.org/functions";
                xmlns:my="http://www.xontech.com/functions";
                extension-element-prefixes="func">
        <func:function name="my:check">
                <xsl:variable name="test">
                        <node/>
                </xsl:variable>
                <xsl:variable name="test-node" 
select="exsl:node-set($test)/*"/>
                <func:result select="$test-node"/>
        </func:function>
        <xsl:template match="/">
                <xsl:copy-of select="my:check()"/>
        </xsl:template>
</xsl:stylesheet>

I ran it with 'xsltproc test.xslt test.xslt' and the result is a very 
strange element name and namespace that appear to come from invalid memory 
reads.  I was hoping for something along the lines of:

<?xml version="1.0"?>
<node/>

An 'xsltproc --version' gives:

Using libxml 20507, libxslt 10030 and libexslt 720
xsltproc was compiled against libxml 20507, libxslt 10030 and libexslt 720
libxslt 10030 was compiled against libxml 20507
libexslt 720 was compiled against libxml 20507

I'm working with obscure cases of xslt extensions, so I can understand if 
what I'm trying to do is unsupported.  However, I think that the invalid 
memory reads should probably be looked into :).  In an attempt to further 
reduce the testcase, I just noticed the removing the extra step with the 
second <xsl:variable/> in my:check() seems to work fine (i.e. <func:result 
select="exsl:node-set($test)/*"/>).

Thanks!
-Brett

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