linux-kernel - Re: [PATCH 3/6] [v3] kbuild: turn on -Wrestrict by default

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Date: Mon, 15 Apr 2024 09:55:11 -0700
From: Gatlin Newhouse <gatlin.newhouse@...il.com>
To: arnd@...nel.org
Cc: akpm@...ux-foundation.org, arnd@...db.de, 
	Kees Cook <keescook@...omium.org>, linux-kbuild@...r.kernel.org, 
	linux-kernel@...r.kernel.org, masahiroy@...nel.org, 
	Nathan Chancellor <nathan@...nel.org>, nicolas@...sle.eu
Subject: Re: [PATCH 3/6] [v3] kbuild: turn on -Wrestrict by default

> All known -Wrestrict warnings are addressed now, so don't disable the warning
> any more.

I've done some testing of a similar patch with gcc versions 8 to 13 and clang
versions 12 to 15 for x86_64 allmodconfig builds and found no issues building.

Tested-by: Gatlin Newhouse <gatlin.newhouse@...il.com>

>
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
>  scripts/Makefile.extrawarn | 1 -
>  1 file changed, 1 deletion(-)
>
> diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn
> index 8b3f5b62b837..95466a04d51b 100644
> --- a/scripts/Makefile.extrawarn
> +++ b/scripts/Makefile.extrawarn
> @@ -98,7 +98,6 @@ else
>  # Suppress them by using -Wno... except for W=1.
>  KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
>  KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable)
> -KBUILD_CFLAGS += $(call cc-disable-warning, restrict)
>  KBUILD_CFLAGS += $(call cc-disable-warning, packed-not-aligned)
>  KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow)
>  KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation)
> --
> 2.39.2
>

--
Gatlin Newhouse