https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123612
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Maybe, but the simpler
extern int a;
consteval auto foo () { extern int a; return ^^a; }
static_assert (^^a == foo ()); // or not? equal for clang++, not equal for gcc
doesn't seem to be related in any way.
