linux-kernel - Re: [PATCH 6/6] [v3] kbuild: enable -Wstringop-truncation globally

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Date: Mon, 15 Apr 2024 09:15:29 -0700
From: Kees Cook <keescook@...omium.org>
To: Arnd Bergmann <arnd@...nel.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
	"Gustavo A. R. Silva" <gustavo@...eddedor.com>,
	Arnd Bergmann <arnd@...db.de>,
	Masahiro Yamada <masahiroy@...nel.org>,
	Nathan Chancellor <nathan@...nel.org>,
	Nicolas Schier <nicolas@...sle.eu>, linux-kbuild@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 6/6] [v3] kbuild: enable -Wstringop-truncation globally

On Mon, Apr 15, 2024 at 02:20:37PM +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@...db.de>
> 
> The remaining warnings of this type have been addressed, so it can
> now be enabled by default, rather than only for W=1.

Yeah, I know Gustavo had been working on these too. Yay!

Reviewed-by: Kees Cook <keescook@...omium.org>

> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
> v3: no changes
> v2: no changes
> ---
>  scripts/Makefile.extrawarn | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn
> index 1d13cecc7cc7..17c511ddf48a 100644
> --- a/scripts/Makefile.extrawarn
> +++ b/scripts/Makefile.extrawarn
> @@ -108,7 +108,6 @@ else
>  KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow-non-kprintf)
>  KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation-non-kprintf)
>  endif
> -KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation)
>  
>  KBUILD_CFLAGS += -Wno-override-init # alias for -Wno-initializer-overrides in clang
>  
> -- 
> 2.39.2
> 

-- 
Kees Cook