[Bug c++/51226] New: [c++0x] ICE with opaque enum and invalid template

[reichelt at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51226

             Bug #: 51226
           Summary: [c++0x] ICE with opaque enum and invalid template
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: reich...@gcc.gnu.org


The following invalid code snippet triggers an ICE since GCC 4.6.0:

=======================================
template<int> struct A
{
  enum E : int;
};

template<> enum A<>::E : int {};
=======================================

bug.cc:6:19: error: wrong number of template arguments (0, should be 1)
bug.cc:1:22: error: provided for 'template<int <anonymous> > struct A'
bug.cc:6:26: internal compiler error: in is_ancestor, at cp/name-lookup.c:2586
Please submit a full bug report, [etc.]