[Bug c++/46381] New: G++ doesn't catch duplicate members produced by template instantation

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46381

           Summary: G++ doesn't catch duplicate members produced by
                    template instantation
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Keywords: accepts-invalid
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: ja...@gcc.gnu.org
                CC: ja...@gcc.gnu.org


Core issue 996:

  template<typename T, typename U>
  struct Outer {
    template<typename X, typename Y> struct Inner;
    template<typename Y> struct Inner<T, Y> {};
    template<typename Y> struct Inner<U, Y> {};
  };
  Outer<int, int> outer;                      // #1

Here the instantiation of Outer<int, int> is ill-formed, because the two
partial specializations of Inner have the same arguments, but we don't
currently give an error.