linux-kernel - Re: annoying new gcc 4.6.0 warnings.

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Message-ID: <BANLkTinWV_OriM0mdoVdKWZNHhEUUmWDog@mail.gmail.com>
Date:	Thu, 21 Apr 2011 13:09:11 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Dave Jones <davej@...hat.com>, Joe Perches <joe@...ches.com>,
	David Daney <ddaney@...iumnetworks.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	BorislavPetkov <bp@...en8.de>
Subject: Re: annoying new gcc 4.6.0 warnings.

On Thu, Apr 21, 2011 at 12:58 PM, Dave Jones <davej@...hat.com> wrote:
> @@ -359,7 +359,8 @@ KBUILD_CFLAGS   := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
>                   -fno-strict-aliasing -fno-common \
>                   -Werror-implicit-function-declaration \
>                   -Wno-format-security \
> -                  -fno-delete-null-pointer-checks
> +                  -fno-delete-null-pointer-checks \
> +                  -Wno-unused-but-set-variable

Does this work ok for older gcc's? Do they understand that
-Wno-unused-by-set-variable?

gcc-4.5.1 seems to understand it, but what about much older gccs?

                 Linus
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