linux-kernel - Re: gcc 4.5.1 / as 2.20.51.0.11 miscompiling drivers/char/i8k.c ?

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Message-ID: <m3lj52txaq.fsf@redhat.com>
Date:	Tue, 09 Nov 2010 14:57:01 +0100
From:	Andreas Schwab <schwab@...hat.com>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Michael Matz <matz@...e.de>,
	Dave Korn <dave.korn.cygwin@...il.com>,
	Richard Guenther <richard.guenther@...il.com>,
	Jim <jim876@...all.nl>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	gcc@....gnu.org
Subject: Re: gcc 4.5.1 / as 2.20.51.0.11 miscompiling drivers/char/i8k.c ?

Andi Kleen <andi@...stfloor.org> writes:

> @@ -142,7 +142,7 @@ static int i8k_smm(struct smm_regs *regs)
>  		"lahf\n\t"
>  		"shrl $8,%%eax\n\t"
>  		"andl $1,%%eax\n"
> -		:"=a"(rc)
> +		:"=a"(rc), "=m" (*regs)

I think this should be "+m".

Andreas.

-- 
Andreas Schwab, schwab@...hat.com
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