https://gcc.gnu.org/bugzilla/show_bug.cgi?id=7652
--- Comment #38 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Matthew Woehlke from comment #37) > [[fallthrough]] was approved for C++17. While the standard does not > normatively *require* a diagnostic, it's certainly expected that one be > issued. It's a shame that gcc is behind the curve here. It was approved less than a week ago. It's not 2017 yet. It will get implemented.
