linux-kernel - Re: [PATCH 5/7] signal: Silence nested-externs warnings

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Message-ID: <541C4D57.9050507@nod.at>
Date:	Fri, 19 Sep 2014 17:35:51 +0200
From:	Richard Weinberger <richard@....at>
To:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>, sparse@...isli.org
CC:	Mark Rustad <mark.d.rustad@...el.com>,
	linux-sparse@...r.kernel.org, linux-kernel@...r.kernel.org,
	Oleg Nesterov <oleg@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Brian Norris <computersforpeace@...il.com>
Subject: Re: [PATCH 5/7] signal: Silence nested-externs warnings

Am 19.09.2014 17:29, schrieb Jeff Kirsher:
> From: Mark Rustad <mark.d.rustad@...el.com>
> 
> Silence nested-externs warnings for these, as these nested
> externs are truly wanted.
> 
> CC: Oleg Nesterov <oleg@...hat.com>
> CC: Andrew Morton <akpm@...ux-foundation.org>
> CC: Geert Uytterhoeven <geert@...ux-m68k.org>
> CC: Richard Weinberger <richard@....at>
> CC: Brian Norris <computersforpeace@...il.com>
> Signed-off-by: Mark Rustad <mark.d.rustad@...el.com>
> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
> ---
>  include/linux/signal.h | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/include/linux/signal.h b/include/linux/signal.h
> index 750196f..e68ae6b 100644
> --- a/include/linux/signal.h
> +++ b/include/linux/signal.h
> @@ -67,7 +67,9 @@ static inline int sigismember(sigset_t *set, int _sig)
>  
>  static inline int sigisemptyset(sigset_t *set)
>  {
> +	DIAG_PUSH DIAG_IGNORE(nested-externs)

Do we really want to clutter the source with such tags?
Does this even build? i.e. how does gcc know to ignore that?

rw@...ael:~/linux (ubi-wlcrash $)> git grep DIAG_PUSH | wc -l
0

Thanks,
//richard
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