From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:56616) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zydjg-00007q-SF for qemu-devel@nongnu.org; Tue, 17 Nov 2015 05:43:41 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Zydjd-0003AR-Kz for qemu-devel@nongnu.org; Tue, 17 Nov 2015 05:43:40 -0500 Received: from mx1.redhat.com ([209.132.183.28]:45563) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zydjd-0003AN-Fy for qemu-devel@nongnu.org; Tue, 17 Nov 2015 05:43:37 -0500 References: <1447754381-29882-1-git-send-email-pbonzini@redhat.com> <564B0150.7030400@redhat.com> <564B046F.50205@redhat.com> From: Paolo Bonzini Message-ID: <564B04D5.4000605@redhat.com> Date: Tue, 17 Nov 2015 11:43:33 +0100 MIME-Version: 1.0 In-Reply-To: <564B046F.50205@redhat.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH for 2.5] QEMU does not care about left shifts of signed negative values List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Laszlo Ersek , Peter Maydell Cc: QEMU Developers On 17/11/2015 11:41, Laszlo Ersek wrote: > > If and when this happens we will add "-fno-strict-overflow" for clang, > > just like we are using "-fno-strict-aliasing" already. > > How about adding "-fwrapv -fno-strict-overflow" right now? (Spelling out > the latter of those explicitly for pointer arithmetic.) If it makes the change to HACKING more palatable, I'm all for it. Paolo