[Bug c++/106259] [10/11/12/13 Regression] ICE in diag_mismatched_tags, at cp/parser.cc:33896

[mpolacek at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106259

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
// PR c++/106259
// { dg-do compile { target c++11 } }

template<typename T> struct A {
  template<typename U>
  struct W { };
};

template<>
struct A<char> {
  template<typename U>
  class W { };
};

void
g ()
{
  struct A<char>::W<int> w1; // warn
  struct A<int>::W<int> w2; // dont warn
  class A<char>::W<int> w3; // dont warn
  class A<int>::W<int> w4; // warn
}