https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97449
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Ville Voutilainen <vi...@gcc.gnu.org>: https://gcc.gnu.org/g:1f65bf2aa65609c0cd88af1b83191d37d6729f46 commit r11-4024-g1f65bf2aa65609c0cd88af1b83191d37d6729f46 Author: Ville Voutilainen <ville.voutilai...@gmail.com> Date: Sat Oct 17 22:08:50 2020 +0300 libstdc++: Fix visitor return type diagnostics [PR97449] libstdc++-v3/ChangeLog: PR libstdc++/97449 * include/std/variant (__gen_vtable_impl<>::_S_apply_single_alt): Diagnose visitor return type mismatches here.. (__gen_vtable_impl</*base case*/>::_S_apply): ..not here.