https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105351
--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Patrick Palka <ppa...@gcc.gnu.org>: https://gcc.gnu.org/g:a16fc9f1c96c7361d0b7a83a06f3649ace6c440d commit r13-95-ga16fc9f1c96c7361d0b7a83a06f3649ace6c440d Author: Patrick Palka <ppa...@redhat.com> Date: Tue May 3 15:21:26 2022 -0400 c++: make finish_non_static_data_member SFINAE enabled [PR105351] Here since finish_non_static_data_member isn't SFINAE enabled, we incorrectly emit an error when considering the first overload rather than silently discarding it: sfinae33.C: In substitution of âtemplate<class T> A<T::value> f() [with T = B]â: sfinae33.C:11:7: required from here sfinae33.C:5:31: error: invalid use of non-static data member âB::valueâ 5 | template<class T> A<T::value> f(); | ^ This patch makes the function SFINAE enabled in the usual way: give it a complain parameter, check it before emitting an error, and pass it through appropriately. PR c++/105351 gcc/cp/ChangeLog: * cp-tree.h (finish_non_static_data_member): Add defaulted complain parameter. * pt.cc (tsubst_copy_and_build): Pass complain to finish_non_static_data_member. * semantics.cc (finish_non_static_data_member): Respect complain parameter. (finish_qualified_id_expr): Pass complain to finish_non_static_data_member. gcc/testsuite/ChangeLog: * g++.dg/template/sfinae33.C: New test.
