https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91432
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org --- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> --- The warning has been carefully designed not to warn in common cases which pose no problems, see e.g. https://developers.redhat.com/blog/2017/03/10/wimplicit-fallthrough-in-gcc-7 or the lengthy discussions held around the submission of the feature. Not warning in this case is a very intentional part of those design decisions.