linux-kernel - Re: [PATCH] scripts/Makefile.extrawarn: Do not disable clang's -Wformat-zero-length

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Date:   Wed, 17 Aug 2022 23:44:47 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Nathan Chancellor <nathan@...nel.org>
Cc:     Nick Desaulniers <ndesaulniers@...gle.com>,
        Tom Rix <trix@...hat.com>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        clang-built-linux <llvm@...ts.linux.dev>
Subject: Re: [PATCH] scripts/Makefile.extrawarn: Do not disable clang's -Wformat-zero-length

On Thu, Aug 11, 2022 at 8:01 AM Nathan Chancellor <nathan@...nel.org> wrote:
>
> There are no instances of this warning in the tree across several
> difference architectures and configurations. This was added by
> commit 26ea6bb1fef0 ("kbuild, LLVMLinux: Supress warnings unless W=1-3")
> back in 2014, where it might have been necessary, but there are no
> instances of it now so stop disabling it to increase warning coverage
> for clang.
>
> Signed-off-by: Nathan Chancellor <nathan@...nel.org>
> ---

Applied to linux-kbuild/fixes. Thanks.



>  scripts/Makefile.extrawarn | 1 -
>  1 file changed, 1 deletion(-)
>
> diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn
> index 9bbaf7112a9b..69cec45c4e71 100644
> --- a/scripts/Makefile.extrawarn
> +++ b/scripts/Makefile.extrawarn
> @@ -48,7 +48,6 @@ else
>  ifdef CONFIG_CC_IS_CLANG
>  KBUILD_CFLAGS += -Wno-initializer-overrides
>  KBUILD_CFLAGS += -Wno-sign-compare
> -KBUILD_CFLAGS += -Wno-format-zero-length
>  KBUILD_CFLAGS += $(call cc-disable-warning, pointer-to-enum-cast)
>  KBUILD_CFLAGS += -Wno-tautological-constant-out-of-range-compare
>  KBUILD_CFLAGS += $(call cc-disable-warning, unaligned-access)
>
> base-commit: aeb6e6ac18c73ec287b3b1e2c913520699358c13
> --
> 2.37.1
>


-- 
Best Regards
Masahiro Yamada