linux-kernel - Re: [PATCH 34/34] kbuild: always enable -Wunused-const-variable

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Date: Wed, 3 Apr 2024 12:19:32 +0300
From: Andy Shevchenko <andriy.shevchenko@...el.com>
To: Arnd Bergmann <arnd@...nel.org>
Cc: linux-kernel@...r.kernel.org, Masahiro Yamada <masahiroy@...nel.org>,
	Arnd Bergmann <arnd@...db.de>,
	Nathan Chancellor <nathan@...nel.org>,
	Nicolas Schier <nicolas@...sle.eu>, linux-kbuild@...r.kernel.org
Subject: Re: [PATCH 34/34] kbuild: always enable -Wunused-const-variable

On Wed, Apr 03, 2024 at 10:06:52AM +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@...db.de>
> 
> The last such warnings are fixed now, so the option can be enabled by default.

> @@ -96,7 +96,6 @@ else
>  # Some diagnostics enabled by default are noisy.
>  # 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, packed-not-aligned)
>  KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow)

What about line #43 in this file?

Citing 40-43 below:

# These warnings generated too much noise in a regular build.
# Use make W=1 to enable them (see scripts/Makefile.extrawarn)
KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable)

-- 
With Best Regards,
Andy Shevchenko