From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#25883: 25.2; Frequent, but not reproducible, crash on startup Date: Sun, 26 Feb 2017 22:07:14 +0200 Message-ID: <83zih8pvgt.fsf@gnu.org> References: <831sukrbkk.fsf@gnu.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1488139698 30324 195.159.176.226 (26 Feb 2017 20:08:18 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sun, 26 Feb 2017 20:08:18 +0000 (UTC) Cc: 25883@debbugs.gnu.org To: John Wiegley Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sun Feb 26 21:08:13 2017 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ci573-00074C-If for geb-bug-gnu-emacs@m.gmane.org; Sun, 26 Feb 2017 21:08:09 +0100 Original-Received: from localhost ([::1]:48137 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ci579-0007nd-DN for geb-bug-gnu-emacs@m.gmane.org; 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Sun, 26 Feb 2017 15:07:42 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ci56Y-0000H8-9Q for bug-gnu-emacs@gnu.org; Sun, 26 Feb 2017 15:07:41 -0500 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:46364) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ci56Y-0000H4-6H; Sun, 26 Feb 2017 15:07:38 -0500 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:2224 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1ci56X-0006Dr-CT; Sun, 26 Feb 2017 15:07:38 -0500 In-reply-to: (message from John Wiegley on Sun, 26 Feb 2017 11:45:45 -0800) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 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" Xref: news.gmane.org gmane.emacs.bugs:129841 Archived-At: > From: John Wiegley > Cc: bug-gnu-emacs@gnu.org > Date: Sun, 26 Feb 2017 11:45:45 -0800 > > >>>>> Eli Zaretskii writes: > > > I am not familiar enough with ERC support in Emacs -- is it possible that > > Emacs tries to display some partial byte stream that includes incomplete > > characters, i.e. the byte sequence for some character(s) is incomplete? > > Not only possible, but likely. What happens is this: > > 1. Emacs starts up > 2. ERC begins initializing > 3. ERC logins in to ZNC > 4. ZNC starts playing black all the messages that came in since I last > exited Emacs. > 5. Emacs sometimes survives this, sometimes crashes. > > So it's quite possible that a "past message" ZNC is playing back contains a > partial byte sequence. It's important to have the text of the buffer at the point of crash. I could tell you how to do that with GDB, but I don't know how with other debuggers. Does ERC display include overlays or display strings or images? Or maybe (space . PROPS) display properties? Or any other kind of non-buffer text?