linux-kernel - Re: [rfc git pull] cpus4096 fixes, take 2

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Message-Id: <200807301015.39525.rusty@rustcorp.com.au>
Date:	Wed, 30 Jul 2008 10:15:38 +1000
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Mike Travis <travis@....com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Al Viro <viro@...iv.linux.org.uk>
Subject: Re: [rfc git pull] cpus4096 fixes, take 2

On Tuesday 29 July 2008 22:11:56 Ingo Molnar wrote:
> But gcc 3.4.5 apparently craps out on this valid use of a gcc extension,
> see the report and the fix at:

Hmm.  I can't find anything in the docs, but I'd assumed that a statement 
expression isn't an lvalue.  Trying "int x; &({ x; });" fails as expected 
with gcc 3.4, 4.1, 4.2 and 4.3:

	foo.c:3: error: lvalue required as unary ‘&’ operand

I'd say your code should, too...

Cheers,
Rusty.
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