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

[jim at meyering dot net]

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

--- Comment #7 from jim at meyering dot net ---
Thanks for investigating.
I already pushed a workaround for gnulib's vasnprintf problem
(http://git.savannah.gnu.org/cgit/gnulib.git/commit/?id=e63f5eb55570a1ea3e51ce47df33689785e085c1).
I may just leave that there.

The alternative of using an empty "__attribute__((__fallthrough__));" statement
would require a macro expanding to that or to nothing.