[Bug c++/79900] [5/6/7 Regression] ICE in strip_typedefs, at cp/tree.c:1554

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79900

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mpolacek at gcc dot gnu.org

--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
reduced test case:

template <class> struct A;
template <typename> struct B {
  long _M_off;
  int _M_state;
};
template <> struct A<char> { typedef B<int> pos_type; };
enum _Ios_Openmode {};
struct C {
  typedef _Ios_Openmode openmode;
};
template <typename, typename _Traits> struct D {
  typedef typename _Traits::pos_type pos_type;
  pos_type m_fn1(pos_type, C::openmode);
};
template class D<char, A<char>>;
template <typename _CharT, typename _Traits>
typename D<_CharT, _Traits>::pos_type D<_CharT, _Traits>::m_fn1(pos_type,
                                                                C::openmode) {}