linux-kernel - Re: [PATCH v3 0/2] Stop some of the abuse of BUG() where compile time checks should be used.

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Date:	Thu, 24 Nov 2011 10:24:55 +0000
From:	David Howells <dhowells@...hat.com>
To:	David Daney <ddaney.cavm@...il.com>
Cc:	dhowells@...hat.com,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"ralf@...ux-mips.org" <ralf@...ux-mips.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>,
	David Rientjes <rientjes@...gle.com>, DM <dm.n9107@...il.com>,
	David Daney <david.daney@...ium.com>,
	"Pinski, Andrew" <Andrew.Pinski@...iumnetworks.com>
Subject: Re: [PATCH v3 0/2] Stop some of the abuse of BUG() where compile time checks should be used.

David Daney <ddaney.cavm@...il.com> wrote:

> We thought about doing that, but without doing some complex preprocessor fu,
> the GCC attribute ((error())) thing doesn't do what we want.
> 
> It appears that if more than a single instance of the construct is used in a
> compilation unit, the string emitted by the compiler for any of the violations
> will be the last string encountered.

Have you tried asking the gcc folks if this is likely to get fixed soon?

David
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