[Bug c++/108833] [11/12 Regression] internal compiler error: Segmentation fault (GCC 12.1.1)

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108833

--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Better reduced testcase that doesn't emit a warning:
struct input_t {
  template <class T> struct range_t {
    friend int &operator>>(int &, range_t<double> &);
    range_t(char);
  };
  int read_s;
  void read() {
    range_t<double> range(':');
    read_s >> range;
  }
};
int &operator>>(int &, input_t::range_t<double> &);