https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103922
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Target Milestone|--- |10.0 Keywords| |accepts-invalid Resolution|--- |FIXED --- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- >Was fixed in g++-10. GCC 10 had a rewrite of concepts so I am not shocked it was fixed in GCC 10. There is no much to do about GCC 9 here really because of that fact.