Re: [PATCH 01/12] kbuild: make -Woverride-init warnings more consistent

[Linus Walleij]

On Tue, Mar 26, 2024 at 3:49 PM Arnd Bergmann <arnd@xxxxxxxxxx> wrote:

> From: Arnd Bergmann <arnd@xxxxxxxx>
>
> The -Woverride-init warn about code that may be intentional or not,
> but the inintentional ones tend to be real bugs, so there is a bit of
> disagreement on whether this warning option should be enabled by default
> and we have multiple settings in scripts/Makefile.extrawarn as well as
> individual subsystems.
>
> Older versions of clang only supported -Wno-initializer-overrides with
> the same meaning as gcc's -Woverride-init, though all supported versions
> now work with both. Because of this difference, an earlier cleanup of
> mine accidentally turned the clang warning off for W=1 builds and only
> left it on for W=2, while it's still enabled for gcc with W=1.
>
> There is also one driver that only turns the warning off for newer
> versions of gcc but not other compilers, and some but not all the
> Makefiles still use a cc-disable-warning conditional that is no
> longer needed with supported compilers here.
>
> Address all of the above by removing the special cases for clang
> and always turning the warning off unconditionally where it got
> in the way, using the syntax that is supported by both compilers.
>
> Fixes: 2cd3271b7a31 ("kbuild: avoid duplicate warning options")
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>

Neat!
Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>

Yours,
Linus Walleij