[Bug c++/93650] ICE in cxx_eval_constant_expression, at cp/constexpr.c:5626

[asolokha at gmx dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93650

--- Comment #1 from Arseny Solokha <asolokha at gmx dot com> ---
W/o <compare>:

namespace std {
  using type = enum _Ord { less };
  class strong_ordering {
    type _M_value;
    constexpr strong_ordering(_Ord) : _M_value() {}
    static const strong_ordering less;
    static strong_ordering equal;
    static strong_ordering greater;
  } constexpr strong_ordering::less(_Ord::less);
  auto v = 1 <=> 2;
}