https://gcc.gnu.org/bugzilla/show_bug.cgi?id=7652
Tom Tromey <tromey at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |tromey at gcc dot gnu.org --- Comment #36 from Tom Tromey <tromey at gcc dot gnu.org> --- This came up for Mozilla today: https://groups.google.com/forum/#!topic/mozilla.dev.platform/YT7SXFhyr_I Essentially, this warning and the "intentional fallthrough" attribute exist for both clang and MSVC and will be enabled there; but GCC still doesn't have this feature.