Re: [PATCH 0/2] kbuild: remove gcc's -Wtype-limits

[Nicolas Schier <nsc@kernel.org>]

On Thu, Dec 18, 2025 at 07:50:00PM +0100, Vincent Mailhol wrote:
> I often read on the mailing list people saying "who cares about W=2
> builds anyway?". At least I do. Not that I want to fix all of them,
> but on some occasions, such as new driver submissions, I have often
> found a couple valid diagnostics in the W=2 output.
> 
> That said, the annoying thing is that W=2 is heavily polluted by one
> warning: -Wtype-limits. Try a gcc W=2 build on any file and see the
> results for yourself. I suspect this to be the reason why so few
> people are using W=2.
> 
> This series removes gcc's -Wtype-limits in an attempt to make W=2 more
> useful. Those who do not use W=2 can continue to not use it if they
> want. Those who, like me, use it form time to time will get an
> improved experience from the reduced spam.
> 
> Extra details on statistics, past attempts and -Wtype-limits
> alternatives are given in the first patch description.
> 
> Signed-off-by: Vincent Mailhol <mailhol@kernel.org>
> ---
> Vincent Mailhol (2):
>       kbuild: remove gcc's -Wtype-limits
>       kbuild: cleanup local -Wno-type-limits exceptions
> 
>  drivers/gpu/drm/Makefile | 1 -
>  fs/btrfs/Makefile        | 1 -
>  scripts/Makefile.warn    | 4 +++-
>  3 files changed, 3 insertions(+), 3 deletions(-)
> ---
> base-commit: 3e7f562e20ee87a25e104ef4fce557d39d62fa85
> change-id: 20251205-remove_wtype-limits-c77eb46d09c2
> 
> Best regards,
> -- 
> Vincent Mailhol <mailhol@kernel.org>
> 

Thanks for the effort!  (This allows to revert commit dc7fe518b049
("overflow: Fix -Wtype-limits compilation warnings").)

Reviewed-by: Nicolas Schier <nsc@kernel.org>