From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#12446: port better to POSIX hosts lacking _setjmp Date: Sat, 15 Sep 2012 13:27:13 +0300 Message-ID: <83a9wrtwce.fsf@gnu.org> References: <50538925.3010608@cs.ucla.edu> <83txv0tkho.fsf@gnu.org> <5053A177.1020608@cs.ucla.edu> <83sjaju5ca.fsf@gnu.org> <50543339.3090500@cs.ucla.edu> <83ligbu1uk.fsf@gnu.org> <50544272.2020602@cs.ucla.edu> <83haqztybr.fsf@gnu.org> <505451D2.2050307@cs.ucla.edu> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1347704893 8991 80.91.229.3 (15 Sep 2012 10:28:13 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 15 Sep 2012 10:28:13 +0000 (UTC) Cc: lekktu@gmail.com, 12446@debbugs.gnu.org To: Paul Eggert Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Sep 15 12:28:16 2012 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1TCpbe-0003qS-88 for geb-bug-gnu-emacs@m.gmane.org; Sat, 15 Sep 2012 12:28:10 +0200 Original-Received: from localhost ([::1]:59756 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TCpba-0008BH-CM for geb-bug-gnu-emacs@m.gmane.org; Sat, 15 Sep 2012 06:28:06 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:55653) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TCpbV-0008AD-6Q for bug-gnu-emacs@gnu.org; Sat, 15 Sep 2012 06:28:03 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TCpbU-0005XP-7n for bug-gnu-emacs@gnu.org; Sat, 15 Sep 2012 06:28:01 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:53579) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TCpbU-0005XI-4M for bug-gnu-emacs@gnu.org; Sat, 15 Sep 2012 06:28:00 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.72) (envelope-from ) id 1TCpcT-0008TR-Pp for bug-gnu-emacs@gnu.org; Sat, 15 Sep 2012 06:29:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: debbugs-submit-bounces@debbugs.gnu.org Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 15 Sep 2012 10:29:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 12446 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: patch Original-Received: via spool by 12446-submit@debbugs.gnu.org id=B12446.134770489732514 (code B ref 12446); Sat, 15 Sep 2012 10:29:01 +0000 Original-Received: (at 12446) by debbugs.gnu.org; 15 Sep 2012 10:28:17 +0000 Original-Received: from localhost ([127.0.0.1]:34892 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1TCpbl-0008SM-Fp for submit@debbugs.gnu.org; Sat, 15 Sep 2012 06:28:17 -0400 Original-Received: from mtaout20.012.net.il ([80.179.55.166]:37393) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1TCpbj-0008SB-5W for 12446@debbugs.gnu.org; Sat, 15 Sep 2012 06:28:15 -0400 Original-Received: from conversion-daemon.a-mtaout20.012.net.il by a-mtaout20.012.net.il (HyperSendmail v2007.08) id <0MAD00F00ZOU9500@a-mtaout20.012.net.il> for 12446@debbugs.gnu.org; Sat, 15 Sep 2012 13:27:11 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout20.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0MAD00FPEZPB1960@a-mtaout20.012.net.il>; Sat, 15 Sep 2012 13:27:11 +0300 (IDT) In-reply-to: <505451D2.2050307@cs.ucla.edu> X-012-Sender: halo1@inter.net.il X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.13 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 2) X-Received-From: 140.186.70.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:64353 Archived-At: > Date: Sat, 15 Sep 2012 03:00:50 -0700 > From: Paul Eggert > CC: 12446@debbugs.gnu.org, lekktu@gmail.com > > > longjmp restores the environment, including the signal mask, to what > > it was when setjmp was called. > > No, sometimes it does, sometimes it doesn't. > It depends on the platform. If you want the signal mask > restored portably, you have to do it some other way, by using > siglongjmp or pthread_sigmask or something like that. Yes, but from your description of the "messup" it sounds like _not_ restoring the signal mask will cause the trouble. After your changes, we never restore the signal mask, because sigsetjmp is called with its second argument zero.