linux-kernel - Re: [PATCH] compiler.h: don't use temporary variable in __compiletime

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Message-ID: <1399966293.4137.5.camel@jlt4.sipsolutions.net>
Date:	Tue, 13 May 2014 09:31:33 +0200
From:	Johannes Berg <johannes@...solutions.net>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	James Hogan <james.hogan@...tec.com>, linux-kernel@...r.kernel.org,
	Peter Zijlstra <peterz@...radead.org>,
	Daniel Santos <daniel.santos@...ox.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	linux-next <linux-next@...r.kernel.org>,
	linux-metag <linux-metag@...r.kernel.org>
Subject: Re: [PATCH] compiler.h: don't use temporary variable in
 __compiletime_assert()

On Mon, 2014-05-12 at 14:16 -0700, Andrew Morton wrote:

> > I don't understand why your patch should break things, I suspect it's
> > related to the sparse behaviour you're trying to work around, but can we
> > please drop this patch until a more portable workaround can be found?
> 
> Older gcc's often have this problem.
> 
> I suppose that build bustage is more serious than sparse false
> positives so yes, let's please try to find an alternative.

Since most people probably don't use sparse without compiling (in fact
it's pretty difficult to do so) I'll just send a patch to disable
__compiletime_assert for sparse - any objections?

johannes

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