From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Paul Eggert Newsgroups: gmane.emacs.bugs Subject: bug#12446: port better to POSIX hosts lacking _setjmp Date: Sat, 15 Sep 2012 03:00:50 -0700 Organization: UCLA Computer Science Department Message-ID: <505451D2.2050307@cs.ucla.edu> 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> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1347703266 30079 80.91.229.3 (15 Sep 2012 10:01:06 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 15 Sep 2012 10:01:06 +0000 (UTC) Cc: lekktu@gmail.com, 12446@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Sep 15 12:01:09 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 1TCpBU-0006i7-6t for geb-bug-gnu-emacs@m.gmane.org; Sat, 15 Sep 2012 12:01:08 +0200 Original-Received: from localhost ([::1]:56980 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TCpBQ-0003sZ-E0 for geb-bug-gnu-emacs@m.gmane.org; Sat, 15 Sep 2012 06:01:04 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:53571) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TCpBN-0003s7-Oj for bug-gnu-emacs@gnu.org; Sat, 15 Sep 2012 06:01:02 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TCpBM-0005RN-S2 for bug-gnu-emacs@gnu.org; Sat, 15 Sep 2012 06:01:01 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:53472) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TCpBM-0005RJ-On for bug-gnu-emacs@gnu.org; Sat, 15 Sep 2012 06:01:00 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.72) (envelope-from ) id 1TCpCM-0007m2-JH for bug-gnu-emacs@gnu.org; Sat, 15 Sep 2012 06:02:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Paul Eggert Original-Sender: debbugs-submit-bounces@debbugs.gnu.org Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 15 Sep 2012 10:02:02 +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=B12446.134770331429861 (code B ref 12446); Sat, 15 Sep 2012 10:02:02 +0000 Original-Received: (at 12446) by debbugs.gnu.org; 15 Sep 2012 10:01:54 +0000 Original-Received: from localhost ([127.0.0.1]:34784 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1TCpCD-0007la-FQ for submit@debbugs.gnu.org; Sat, 15 Sep 2012 06:01:54 -0400 Original-Received: from smtp.cs.ucla.edu ([131.179.128.62]:34314) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1TCpCB-0007lS-6x for 12446@debbugs.gnu.org; Sat, 15 Sep 2012 06:01:52 -0400 Original-Received: from localhost (localhost.localdomain [127.0.0.1]) by smtp.cs.ucla.edu (Postfix) with ESMTP id 5B67EA60001; Sat, 15 Sep 2012 03:00:48 -0700 (PDT) X-Virus-Scanned: amavisd-new at smtp.cs.ucla.edu Original-Received: from smtp.cs.ucla.edu ([127.0.0.1]) by localhost (smtp.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 7AwEl+1f7QQa; Sat, 15 Sep 2012 03:00:47 -0700 (PDT) Original-Received: from [192.168.1.3] (pool-108-23-119-2.lsanca.fios.verizon.net [108.23.119.2]) by smtp.cs.ucla.edu (Postfix) with ESMTPSA id ACF8F39E800D; Sat, 15 Sep 2012 03:00:47 -0700 (PDT) User-Agent: Mozilla/5.0 (X11; Linux i686; rv:15.0) Gecko/20120827 Thunderbird/15.0 In-Reply-To: <83haqztybr.fsf@gnu.org> 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:64348 Archived-At: On 09/15/2012 02:44 AM, Eli Zaretskii wrote: >> Some POSIXish hosts lack _setjmp, but have sigsetjmp, > > How did those hosts succeed to compile Emacs before your changes, then? They used setjmp, which meant they were slower and had some (rare) race conditions that caused problems. > 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.