...
> Concretely, as an upstream maintainer, what should they do to
test
> the behaviour of their code ? Is there more to it than just
> setting CFLAGS="-std=gnu99", if they want to validate this in their
> upstream CI ahead of GCC 14 arriving ?
It's -Werror=implicit-int -Werror=implicit-function-declaration. Best
to throw in -Werror=int-conversion -Werror=strict-prototypes
-Werror=old-style-definition. -Werror=int-conversion should really be a
no-brainer, the other two are about the removal of old-style function
definitions and declarations that are not prototypes from C2X (also
mentioned in the proposal). I can probably spell this out in the
proposal.
Even better: could you put together an RPM macro we can use in
specfiles to essentially opt-in early to the F40 Change?