From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:48070) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RFtXT-0005sY-Nf for qemu-devel@nongnu.org; Mon, 17 Oct 2011 16:12:00 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1RFtXS-0001nK-I1 for qemu-devel@nongnu.org; Mon, 17 Oct 2011 16:11:59 -0400 Received: from mail-ww0-f41.google.com ([74.125.82.41]:33002) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RFtXS-0001nA-Bi for qemu-devel@nongnu.org; Mon, 17 Oct 2011 16:11:58 -0400 Received: by wwe32 with SMTP id 32so2677152wwe.4 for ; Mon, 17 Oct 2011 13:11:57 -0700 (PDT) Sender: Richard Henderson Message-ID: <4E9C8C07.6070706@twiddle.net> Date: Mon, 17 Oct 2011 13:11:51 -0700 From: Richard Henderson MIME-Version: 1.0 References: <4E9BB180.6080506@mc.net> <4E9C0497.2000605@siriusit.co.uk> <4E9C3703.3040109@mc.net> <4E9C645A.5060200@twiddle.net> In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] gcc auto-omit-frame-pointer vs msvc longjmp List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Blue Swirl Cc: Mark Cave-Ayland , Kai Tietz , Bob Breuer , qemu-devel , "gcc@gcc.gnu.org" On 10/17/2011 12:14 PM, Blue Swirl wrote: > IIRC buggy versions of alloca() could also fail without a frame pointer. (1) GCC always uses a frame pointer for alloca, (2) Unless you do -fno-builtin-alloca, we always implement it inline. r~