linux-kernel - Re: [PATCH][RFC] getting rid of stupid loop in BUG()

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Date:	Tue, 24 Jul 2007 21:04:01 +0100
From:	Al Viro <viro@....linux.org.uk>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: [PATCH][RFC] getting rid of stupid loop in BUG()

On Tue, Jul 24, 2007 at 12:13:19PM -0700, Jeremy Fitzhardinge wrote:
> Al Viro wrote:
> > Works here...
> >   
> 
> Hm, doesn't here:
> 
>   CC      arch/i386/kernel/irq.o
> /home/jeremy/hg/xen/paravirt/linux/arch/i386/kernel/irq.c: In function '__BUG':
> include2/asm/bug.h:29: warning: 'noreturn' function does return
> 
> This is with current FC7 distro gcc: gcc version 4.1.2 20070502 (Red Hat
> 4.1.2-12)

Interesting...  Looks like it's both version- and flags-dependent.
Oh, well...

BTW, alpha, frv, m68k and s390 have BUG() that is not recognized as
noreturn by gcc.
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