https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109122
Patrick Palka <ppalka at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords|needs-reduction | CC| |ppalka at gcc dot gnu.org --- Comment #5 from Patrick Palka <ppalka at gcc dot gnu.org> --- The problem seems to be with pretty printing a reference/pointer to a pointer to member function type: template<class T, class F> concept C = requires (T t, F f) { (t.*f)(); }; struct A; static_assert(C<A, void (A::*&)(int)>);