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: Add FIXME comment re stack overflow and modules Date: Mon, 21 Dec 2015 21:01:36 +0200 Message-ID: <83wps7r5gv.fsf@gnu.org> References: <83h9jbssx2.fsf@gnu.org> <5678398A.7020409@cs.ucla.edu> <831tafsmes.fsf@gnu.org> <56784527.20400@cs.ucla.edu> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1450724482 11231 80.91.229.3 (21 Dec 2015 19:01:22 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 21 Dec 2015 19:01:22 +0000 (UTC) Cc: emacs-devel@gnu.org To: Paul Eggert Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Dec 21 20:01:22 2015 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 1aB5hx-000222-1J for ged-emacs-devel@m.gmane.org; Mon, 21 Dec 2015 20:01:21 +0100 Original-Received: from localhost ([::1]:46880 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aB5hw-0005iz-Ch for ged-emacs-devel@m.gmane.org; Mon, 21 Dec 2015 14:01:20 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:54704) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aB5hk-0005if-AB for emacs-devel@gnu.org; Mon, 21 Dec 2015 14:01:09 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aB5hh-0002bP-4f for emacs-devel@gnu.org; Mon, 21 Dec 2015 14:01:08 -0500 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:39839) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aB5hh-0002bC-1Q; Mon, 21 Dec 2015 14:01:05 -0500 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:1327 helo=HOME-C4E4A596F7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1aB5hg-0002HO-2S; Mon, 21 Dec 2015 14:01:04 -0500 In-reply-to: <56784527.20400@cs.ucla.edu> (message from Paul Eggert on Mon, 21 Dec 2015 10:29:59 -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:196625 Archived-At: > Cc: emacs-devel@gnu.org > From: Paul Eggert > Date: Mon, 21 Dec 2015 10:29:59 -0800 > > >> >For example, the module code contains comments like "It is very > >> >important that pushing the handler doesn't itself raise a signal" > >> >that suggest that the corresponding code is incompatible with stack > >> >overflow checking. > > I think it refers to Fsignal, not to signals caught by sigaction > > handlers. > > Yes. And this suggests that that part of the implementation is incompatible with > stack overflow checking. It's compatible. It just doesn't catch that like it catches longjmp from C.