linux-kernel - Re: [PATCH 2/7] alpha: Eliminate compiler warning from memset macro

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Message-ID: <CAEdQ38FbgCRWVrvbt6rB713QvqHtY3aQqYLp=G6WG50=OnYFKg@mail.gmail.com>
Date:	Wed, 17 Jul 2013 12:54:10 -0700
From:	Matt Turner <mattst88@...il.com>
To:	Richard Henderson <rth@...ddle.net>
Cc:	linux-kernel@...r.kernel.org, ink@...assic.park.msu.ru,
	linux-alpha@...r.kernel.org
Subject: Re: [PATCH 2/7] alpha: Eliminate compiler warning from memset macro

On Tue, Jul 16, 2013 at 10:04 AM, Richard Henderson <rth@...ddle.net> wrote:
> Compiling with GCC 4.8 yields several instances of
>
> crypto/vmac.c: In function ‘vmac_final’:
> crypto/vmac.c:616:9: warning: value computed is not used [-Wunused-value]
>   memset(&mac, 0, sizeof(vmac_t));
>          ^
> arch/alpha/include/asm/string.h:31:25: note: in definition of macro ‘memset’
>      ? __builtin_memset((s),0,(n))          \
>                          ^
> Converting the macro to an inline function eliminates this problem.
>
> Signed-off-by: Richard Henderson <rth@...ddle.net>
> ---

On IRC we found out that this breaks the breaks kernel build with
gcc-3.4 with "sorry, unimplemented: inlining failed in call to
'memset': recursive  inlining" message on some file. I'll drop this
patch for now.
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