[Bug c/77817] -Wimplicit-fallthrough: cpp directive renders FALLTHRU comment ineffective

[antmak.pub at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77817

--- Comment #18 from Anton Maklakov <antmak.pub at gmail dot com> ---
Thank you for the answer!

I've got. Using the hint after #endif is not pretty good, by the logic. But
this is easier.