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 10:12:53 +0300 Message-ID: <83sjaju5ca.fsf@gnu.org> References: <50538925.3010608@cs.ucla.edu> <83txv0tkho.fsf@gnu.org> <5053A177.1020608@cs.ucla.edu> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1347693188 26833 80.91.229.3 (15 Sep 2012 07:13:08 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 15 Sep 2012 07:13:08 +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 09:13:11 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 1TCmYt-0005FF-C0 for geb-bug-gnu-emacs@m.gmane.org; Sat, 15 Sep 2012 09:13:07 +0200 Original-Received: from localhost ([::1]:33592 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TCmYp-0006Fw-Fb for geb-bug-gnu-emacs@m.gmane.org; Sat, 15 Sep 2012 03:13:03 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:60151) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TCmYn-0006FZ-Fn for bug-gnu-emacs@gnu.org; Sat, 15 Sep 2012 03:13:02 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TCmYm-0000S4-Id for bug-gnu-emacs@gnu.org; Sat, 15 Sep 2012 03:13:01 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:53382) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TCmYm-0000Rz-F9 for bug-gnu-emacs@gnu.org; Sat, 15 Sep 2012 03:13:00 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.72) (envelope-from ) id 1TCmZl-0003xY-QD for bug-gnu-emacs@gnu.org; Sat, 15 Sep 2012 03:14:01 -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 07:14:01 +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=B12446.134769324015206 (code B ref 12446); Sat, 15 Sep 2012 07:14:01 +0000 Original-Received: (at 12446) by debbugs.gnu.org; 15 Sep 2012 07:14:00 +0000 Original-Received: from localhost ([127.0.0.1]:34695 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1TCmZj-0003xC-W1 for submit@debbugs.gnu.org; Sat, 15 Sep 2012 03:14:00 -0400 Original-Received: from mtaout20.012.net.il ([80.179.55.166]:61419) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1TCmZh-0003x4-Bw for 12446@debbugs.gnu.org; Sat, 15 Sep 2012 03:13:58 -0400 Original-Received: from conversion-daemon.a-mtaout20.012.net.il by a-mtaout20.012.net.il (HyperSendmail v2007.08) id <0MAD00D00QMUF100@a-mtaout20.012.net.il> for 12446@debbugs.gnu.org; Sat, 15 Sep 2012 10:12:53 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout20.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0MAD00DQ2QPG7840@a-mtaout20.012.net.il>; Sat, 15 Sep 2012 10:12:52 +0300 (IDT) In-reply-to: <5053A177.1020608@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:64334 Archived-At: > Date: Fri, 14 Sep 2012 14:28:23 -0700 > From: Paul Eggert > CC: 12446@debbugs.gnu.org, lekktu@gmail.com > > On 09/14/2012 01:30 PM, Eli Zaretskii wrote: > > Why not simply switch to using > > ANSI- and Posix-standard setjmp/longjmp? > > Because longjmp might alter the signal mask, > and it might not. POSIX doesn't say either way, > platforms differ in this respect, and the > differences can mess things up and slow things down. Can you elaborate? On which platforms does longjmp change the signal mask and how, and in what ways can this "mess things up and slow things down"?