<?xml version="1.0"?>
<?xml-stylesheet type="text/xml" href="#bug"?>
<!DOCTYPE doc [
<!ATTLIST xsl:transform
  id	ID	#REQUIRED>
]>
<doc>
<xsl:transform
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  version="2.0"
  id="bug">
  <xsl:variable name="v0">
    <xsl:for-each select="$v0" />
  </xsl:variable>
  <xsl:template name="t2" match="/">
    <xsl:copy-of select="number($v0)" />
  </xsl:template>
</xsl:transform>

<e1 />

</doc>
