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: Crash recovery strategies Date: Mon, 04 Jan 2016 18:02:50 +0200 Message-ID: <83h9it72ol.fsf@gnu.org> References: <83mvu1x6t3.fsf@gnu.org> <5678D620.6070000@cs.ucla.edu> <83mvt2qxm1.fsf@gnu.org> <56797CD9.8010706@cs.ucla.edu> <8337uuqsux.fsf@gnu.org> <5679DC83.70405@cs.ucla.edu> <83oadhp2mj.fsf@gnu.org> <567AD556.6020202@cs.ucla.edu> <567AD766.3060608@dancol.org> <567B5DAB.2000900@cs.ucla.edu> <83fuyromig.fsf@gnu.org> <567C25B1.3020101@dancol.org> <56892FD6.8040708@dancol.org> <568988EE.3010205@dancol.org> <56899278.9000007@dancol.org> <56899EAC.1030408@dancol.org> <5689A6DE.2080709@dancol.org> <834met8ilw.fsf@gnu.org> <568A9100.4010005@dancol.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1451923391 1301 80.91.229.3 (4 Jan 2016 16:03:11 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 4 Jan 2016 16:03:11 +0000 (UTC) Cc: eggert@cs.ucla.edu, Emacs-devel@gnu.org To: Daniel Colascione Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Jan 04 17:03:11 2016 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1aG7b7-0002XP-96 for ged-emacs-devel@m.gmane.org; Mon, 04 Jan 2016 17:03:05 +0100 Original-Received: from localhost ([::1]:45614 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aG7b6-0000ca-ND for ged-emacs-devel@m.gmane.org; Mon, 04 Jan 2016 11:03:04 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:33605) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aG7as-0000c3-NJ for Emacs-devel@gnu.org; Mon, 04 Jan 2016 11:02:54 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aG7ao-0002RG-Te for Emacs-devel@gnu.org; Mon, 04 Jan 2016 11:02:50 -0500 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:35439) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aG7ao-0002RC-Qp; Mon, 04 Jan 2016 11:02:46 -0500 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:3036 helo=HOME-C4E4A596F7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1aG7ao-0001nt-2P; Mon, 04 Jan 2016 11:02:46 -0500 In-reply-to: <568A9100.4010005@dancol.org> (message from Daniel Colascione on Mon, 4 Jan 2016 07:34:24 -0800) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2001:4830:134:3::e 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:197605 Archived-At: > Cc: eggert@cs.ucla.edu, Emacs-devel@gnu.org > From: Daniel Colascione > Date: Mon, 4 Jan 2016 07:34:24 -0800 > > > You won't be able to do anything except call printf, without jumping > > out of the handler. The stack space left after stack overflow is too > > small for anything fancier. You will almost certainly crash, that's > > all. > > There's no guarantee that you can even call printf. The guard page is usually one or 2 pages, which is enough for most uses of printf. > And you continue to ignore the existence of the alternate signal > stack. No, I don't.