From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Eric Abrahamsen Newsgroups: gmane.emacs.devel Subject: Re: Hangs on redisplay_internal Date: Thu, 13 Jun 2019 15:23:26 -0700 Message-ID: <87sgsd2kgx.fsf@ericabrahamsen.net> References: <87o93fmctq.fsf@ericabrahamsen.net> <18F33AA3-9760-4E25-8DA7-4583BC8E362C@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="46919"; mail-complaints-to="usenet@blaine.gmane.org" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Jun 14 00:25:13 2019 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1hbY9f-000BuT-Dw for ged-emacs-devel@m.gmane.org; Fri, 14 Jun 2019 00:25:11 +0200 Original-Received: from localhost ([::1]:46132 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hbY9e-0003Un-CX for ged-emacs-devel@m.gmane.org; Thu, 13 Jun 2019 18:25:10 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:43289) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hbY9Z-0003UV-7q for emacs-devel@gnu.org; Thu, 13 Jun 2019 18:25:06 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hbY9Y-0001Xi-95 for emacs-devel@gnu.org; Thu, 13 Jun 2019 18:25:05 -0400 Original-Received: from [195.159.176.226] (port=48218 helo=blaine.gmane.org) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hbY9Y-0001X0-2L for emacs-devel@gnu.org; Thu, 13 Jun 2019 18:25:04 -0400 Original-Received: from list by blaine.gmane.org with local (Exim 4.89) (envelope-from ) id 1hbY9W-000Bhw-E2 for emacs-devel@gnu.org; Fri, 14 Jun 2019 00:25:02 +0200 X-Injected-Via-Gmane: http://gmane.org/ Cancel-Lock: sha1:EBh38p35Ucx6n9JlvLSpbgBhSLs= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 195.159.176.226 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 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" Xref: news.gmane.org gmane.emacs.devel:237560 Archived-At: Eli Zaretskii writes: > On June 3, 2019 8:56:33 AM GMT+03:00, Eric Abrahamsen wrote: >> I've been updating master every three or four days, and over the past >> week (more?) feel like I've been getting a lot of inexplicable hangs. >> They last as long as five or six seconds, but I can usually quit out >> of >> them. I started running with debug on quit as a matter of course, and >> just managed to kill one of them, and got: >> >> Debugger entered--Lisp error: (quit) >> redisplay_internal\ \(C\ function\)() >> >> That's all that was in *Backtrace*. >> >> I'm on Arch Linux, and haven't done anything special to the build >> process. I know this isn't very helpful, but maybe I can track down >> something more. > > Run Emacs under GDB, and when Emacs habgs, stop it with SIGTSTP, as > explained in etc/DEBUG. Then get a more informative backtrace with the > GDB's "bt" command. Be sure to invoke GDB from the src directory, so > that it will also show the Lisp backtrace. And, of course, it never happened again. At least I know what to do now if it does.