From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Emacs 24.0.90 Pretest Windows Binaries Date: Fri, 21 Oct 2011 10:04:47 +0200 Message-ID: <83botasrc0.fsf@gnu.org> References: <4E9E1D1D.1080405@gmail.com> <83zkgxtcy7.fsf@gnu.org> <83ty75t3o3.fsf@gnu.org> <83d3dst5iu.fsf@gnu.org> <83y5wfsqua.fsf@gnu.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: lo.gmane.org X-Trace: dough.gmane.org 1319184301 19142 80.91.229.12 (21 Oct 2011 08:05:01 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Fri, 21 Oct 2011 08:05:01 +0000 (UTC) Cc: emacs-devel@gnu.org To: Kevin Yu Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Oct 21 10:04:54 2011 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([140.186.70.17]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1RHA62-0007RX-NM for ged-emacs-devel@m.gmane.org; Fri, 21 Oct 2011 10:04:54 +0200 Original-Received: from localhost ([::1]:34153 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RHA60-0006lx-SR for ged-emacs-devel@m.gmane.org; Fri, 21 Oct 2011 04:04:52 -0400 Original-Received: from eggs.gnu.org ([140.186.70.92]:52419) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RHA5y-0006ls-QB for emacs-devel@gnu.org; Fri, 21 Oct 2011 04:04:51 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1RHA5x-00032F-Lh for emacs-devel@gnu.org; Fri, 21 Oct 2011 04:04:50 -0400 Original-Received: from mtaout20.012.net.il ([80.179.55.166]:60983) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RHA5x-000329-Dw for emacs-devel@gnu.org; Fri, 21 Oct 2011 04:04:49 -0400 Original-Received: from conversion-daemon.a-mtaout20.012.net.il by a-mtaout20.012.net.il (HyperSendmail v2007.08) id <0LTE00800O284I00@a-mtaout20.012.net.il> for emacs-devel@gnu.org; Fri, 21 Oct 2011 10:04:46 +0200 (IST) Original-Received: from HOME-C4E4A596F7 ([77.124.212.197]) by a-mtaout20.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0LTE0084EP3V3S50@a-mtaout20.012.net.il>; Fri, 21 Oct 2011 10:04:45 +0200 (IST) In-reply-to: X-012-Sender: halo1@inter.net.il X-detected-operating-system: by eggs.gnu.org: Solaris 10 (beta) X-Received-From: 80.179.55.166 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:145380 Archived-At: > Date: Fri, 21 Oct 2011 09:44:23 +0800 > From: Kevin Yu > Cc: emacs-devel@gnu.org > > I wonder if it's a bug of mingw-gcc 4.6.1 This thread: http://lists.gnu.org/archive/html/qemu-devel/2011-10/msg01697.html suggests that it probably is. IIUC, there's an issue with setjmp in the MS runtime not working when -fomit-frame-pointer is used, and the MinGW GCC 4.6.1 turns on -fomit-frame-pointer by default when optimizing. Since Emacs uses setjmp/longjmp _a_lot_, and in particular C-g throws to the top level via this mechanism, it seems like we have a smoking gun. Perhaps rebuild Emacs with -fno-omit-frame-pointer, and see if that helps.