https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103105
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Ever confirmed|0 |1 Status|UNCONFIRMED |NEW Last reconfirmed| |2021-11-06 --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Confirmed, reduced testcase even further: template<bool>class h{}; template<class... xs> using j = h< 1 != (... + requires { xs(); }) >; template<class... xs> using foo = j<xs...>; I tried changing the requires to be something else but it didn't fail.