linux-kernel - Re: [PATCH v1] kbuild: enforce -Werror=unused-result

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Message-ID: <CAK7LNATq68FyLEuck34uD6zTOfsOu2UP=yS=TX4Bvq+OR-zoNA@mail.gmail.com>
Date:   Tue, 1 Dec 2020 19:42:37 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Olaf Hering <olaf@...fle.de>
Cc:     Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Michal Marek <michal.lkml@...kovi.net>
Subject: Re: [PATCH v1] kbuild: enforce -Werror=unused-result

On Tue, Nov 17, 2020 at 7:47 PM Olaf Hering <olaf@...fle.de> wrote:
>
> It is a hard error if a return value is ignored.
> In case the return value has no meaning, remove the attribute.
>
> Signed-off-by: Olaf Hering <olaf@...fle.de>

Applied to linux-kbuild.
Thanks.


> ---
>  Makefile | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/Makefile b/Makefile
> index e2c3f65c4721..c7f9acffad42 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -497,7 +497,7 @@ KBUILD_AFLAGS   := -D__ASSEMBLY__ -fno-PIE
>  KBUILD_CFLAGS   := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \
>                    -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE \
>                    -Werror=implicit-function-declaration -Werror=implicit-int \
> -                  -Werror=return-type -Wno-format-security \
> +                  -Werror=return-type -Werror=unused-result -Wno-format-security \
>                    -std=gnu89
>  KBUILD_CPPFLAGS := -D__KERNEL__
>  KBUILD_AFLAGS_KERNEL :=



-- 
Best Regards
Masahiro Yamada