> <xsl:template match="/">
>  <xsl:variable name="temp" as="element()?">
>    123
>  </xsl:variable>
> </xsl:template>
>
> And Saxon doesn't show any error.


lazy evaluation - the variable isn't used so it never gets evaluated...



-- 
Andrew Welch
http://andrewjwelch.com
Kernow: http://kernowforsaxon.sf.net/