https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100384
Patrick Palka <ppalka at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |ppalka at gcc dot gnu.org --- Comment #4 from Patrick Palka <ppalka at gcc dot gnu.org> --- Hmm, isn't problem here ultimately that std::visit is specified to have a concrete SFINAE-friendly return type, but our implementation uses a deduced return type?