[Bug 3701] fn-union-node-args-003

http://www.w3.org/Bugs/Public/show_bug.cgi?id=3701

           Summary: fn-union-node-args-003
           Product: XML Query Test Suite
           Version: unspecified
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: normal
          Priority: P2
         Component: XML Query Test Suite
        AssignedTo: andrew.eisenberg@us.ibm.com
        ReportedBy: tim@cbcl.co.uk
         QAContact: public-qt-comments@w3.org


$input-context/bib/book[3]/title | root($input-context/bib/book[3]/title)

fails static typechecking because root takes node()?, not node()*.