[Bug c++/28710] New: [4.0/4.1/4.2 regression] ICE redeclaring template as non-template

[reichelt at gcc dot gnu dot org]

The following invalid code snippet triggers an ICE since GCC 4.0.1:

===========================
template<int> union A; 
struct A;
===========================

bug.cc:2: error: redeclaration of 'A<<anonymous> >' as a non-template
bug.cc:2: internal compiler error: tree check: expected class 'type', have
'exceptional' (error_mark) in xref_tag, at cp/decl.c:9670
Please submit a full bug report, [etc.]


-- 
           Summary: [4.0/4.1/4.2 regression] ICE redeclaring template as
                    non-template
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code, error-recovery, monitored
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: reichelt at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28710