linux-kernel - Re: [PATCH] MIPS: Make BUG() _

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Message-ID: <jezljtxmkp.fsf@sykes.suse.de>
Date:	Fri, 21 Nov 2008 13:58:30 +0100
From:	Andreas Schwab <schwab@...e.de>
To:	"Maciej W. Rozycki" <macro@...ux-mips.org>
Cc:	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	David Daney <ddaney@...iumnetworks.com>,
	linux-mips <linux-mips@...ux-mips.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] MIPS: Make BUG() __noreturn.

"Maciej W. Rozycki" <macro@...ux-mips.org> writes:

> Otherwise it looks like the attribute is useless -- it looks like it can 
> only be used for functions where GCC can determine the function does not 
> return anyway.  Which means it is redundant.

The purpose of the attribute is to tell the _callers_ of this function
that it does not return.  It does not change how the attributed function
itself is compiled.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@...e.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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