From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759876AbYDCB77 (ORCPT ); Wed, 2 Apr 2008 21:59:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757984AbYDCB7u (ORCPT ); Wed, 2 Apr 2008 21:59:50 -0400 Received: from zeniv.linux.org.uk ([195.92.253.2]:54034 "EHLO ZenIV.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757869AbYDCB7t (ORCPT ); Wed, 2 Apr 2008 21:59:49 -0400 Date: Thu, 3 Apr 2008 02:59:46 +0100 From: Al Viro To: Linus Torvalds Cc: Harvey Harrison , Andrew Morton , LKML , josh@freedesktop.org Subject: Re: [PATCH 7/7] asm-generic: suppress sparse warning in ioctl.h Message-ID: <20080403015946.GX9785@ZenIV.linux.org.uk> References: <1207182818.5740.26.camel@brick> <20080403013420.GV9785@ZenIV.linux.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.3i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Apr 02, 2008 at 06:50:20PM -0700, Linus Torvalds wrote: > > > On Thu, 3 Apr 2008, Al Viro wrote: > > > > Umm... How far do you want sparse to go? You _really_ don't want > > bug-for-bug compatibility with gcc - it's far too weird (and that's > > even before going into the effects of optimization flags). > > I would suggest just accepting link-time constants in constant > expressions. But yeah, maybe limit even that just to unevaluated > subexpressions. Um... But that's _not_ a link-time constant - simply an int variable not defined in any object file... > That said, for sparse, the right thing to do would be to use > __builtin_warning() or something, but gcc doesn't have that kind of thing, > so.. > > > BTW, what happened with sparse.git? > > Yeah, we do seem to have lost a maintainer.