From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#13653: 24.2.93; cygw32 in daemon mode aborts in response to kill command Date: Sun, 06 Dec 2020 21:25:07 +0200 Message-ID: <83h7oyaga4.fsf@gnu.org> References: <51152A5F.3020909@cornell.edu> <87a6uqrbl8.fsf@gnus.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="17704"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 13653@debbugs.gnu.org To: Lars Ingebrigtsen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun Dec 06 20:26:24 2020 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1klzfs-0004UY-5S for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 06 Dec 2020 20:26:24 +0100 Original-Received: from localhost ([::1]:57070 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1klzfr-0003lF-3O for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 06 Dec 2020 14:26:23 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:49596) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1klzfX-0003jj-8z for bug-gnu-emacs@gnu.org; Sun, 06 Dec 2020 14:26:04 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:39804) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1klzfV-0003Qs-V3 for bug-gnu-emacs@gnu.org; Sun, 06 Dec 2020 14:26:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1klzfV-0000M0-QJ for bug-gnu-emacs@gnu.org; Sun, 06 Dec 2020 14:26:01 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 06 Dec 2020 19:26:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 13653 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: moreinfo Original-Received: via spool by 13653-submit@debbugs.gnu.org id=B13653.16072827281303 (code B ref 13653); Sun, 06 Dec 2020 19:26:01 +0000 Original-Received: (at 13653) by debbugs.gnu.org; 6 Dec 2020 19:25:28 +0000 Original-Received: from localhost ([127.0.0.1]:51345 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1klzex-0000Kx-QT for submit@debbugs.gnu.org; Sun, 06 Dec 2020 14:25:28 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:59462) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1klzew-0000Kh-3U for 13653@debbugs.gnu.org; Sun, 06 Dec 2020 14:25:26 -0500 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:41355) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1klzep-00038w-OW; Sun, 06 Dec 2020 14:25:19 -0500 Original-Received: from [176.228.60.248] (port=2630 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1klzeo-0002RW-JX; Sun, 06 Dec 2020 14:25:19 -0500 In-Reply-To: <87a6uqrbl8.fsf@gnus.org> (message from Lars Ingebrigtsen on Sun, 06 Dec 2020 20:14:27 +0100) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list 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-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:195159 Archived-At: > From: Lars Ingebrigtsen > Date: Sun, 06 Dec 2020 20:14:27 +0100 > Cc: 13653@debbugs.gnu.org > > Ken Brown writes: > > > In the cygw32 build, start emacs in daemon mode: > > > > $ emacs --daemon -Q > > > > Now kill it from the terminal: > > > > $ kill PID > > > > The result is an Emacs Abort Dialog box saying a fatal error has > > occurred and asking me if I want to attach a debugger. I have two > > problems with this. First, a kill command shouldn't cause emacs to > > abort. Second, I don't think the cygw32 build should ever pop up an > > abort dialog box. None of the other emacs builds on Cygwin do this, > > so it's surprising and confusing to users. > > (This bug report unfortunately got no response at the time.) > > Are you still seeing this problem in more recent Emacs versions? Assuming that Ken says this is still an issue: how does 'kill' work in its Cygwin version? Specifically, is it possible that it runs the signal handler in a separate thread, like what Windows does with SIGINT handlers of console programs if one types Ctrl-C? If so, I think I know the reason and can describe the details; fixing that is not trivial, to say the least.