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#18504: 24.3.93; posn-at-point intermittently returns wrong value for a valid buffer position Date: Fri, 19 Sep 2014 16:12:12 +0300 Message-ID: <83a95v21qr.fsf@gnu.org> References: <86mw9wfmxn.fsf@yandex.ru> <83ha041677.fsf@gnu.org> <541C0481.3050101@yandex.ru> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1411132411 27464 80.91.229.3 (19 Sep 2014 13:13:31 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 19 Sep 2014 13:13:31 +0000 (UTC) Cc: 18504@debbugs.gnu.org To: Dmitry Gutov Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Fri Sep 19 15:13:24 2014 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 1XUy01-0008Em-BT for geb-bug-gnu-emacs@m.gmane.org; Fri, 19 Sep 2014 15:13:21 +0200 Original-Received: from localhost ([::1]:58143 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XUy00-0004hn-QH for geb-bug-gnu-emacs@m.gmane.org; Fri, 19 Sep 2014 09:13:20 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:53812) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XUxzs-0004fC-Px for bug-gnu-emacs@gnu.org; Fri, 19 Sep 2014 09:13:18 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XUxzn-0000br-Er for bug-gnu-emacs@gnu.org; Fri, 19 Sep 2014 09:13:12 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:53690) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XUxzn-0000bT-Cj for bug-gnu-emacs@gnu.org; Fri, 19 Sep 2014 09:13:07 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1XUxzh-0005Y5-Pd for bug-gnu-emacs@gnu.org; Fri, 19 Sep 2014 09:13:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 19 Sep 2014 13:13:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 18504 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 18504-submit@debbugs.gnu.org id=B18504.141113234621278 (code B ref 18504); Fri, 19 Sep 2014 13:13:01 +0000 Original-Received: (at 18504) by debbugs.gnu.org; 19 Sep 2014 13:12:26 +0000 Original-Received: from localhost ([127.0.0.1]:45254 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XUxz6-0005X7-Vt for submit@debbugs.gnu.org; Fri, 19 Sep 2014 09:12:25 -0400 Original-Received: from mtaout27.012.net.il ([80.179.55.183]:35122) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XUxz3-0005Wv-63 for 18504@debbugs.gnu.org; Fri, 19 Sep 2014 09:12:23 -0400 Original-Received: from conversion-daemon.mtaout27.012.net.il by mtaout27.012.net.il (HyperSendmail v2007.08) id <0NC500N00FVNRD00@mtaout27.012.net.il> for 18504@debbugs.gnu.org; Fri, 19 Sep 2014 16:06:43 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by mtaout27.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0NC500OQ5GF71R10@mtaout27.012.net.il>; Fri, 19 Sep 2014 16:06:43 +0300 (IDT) In-reply-to: <541C0481.3050101@yandex.ru> X-012-Sender: halo1@inter.net.il X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x 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:93513 Archived-At: > Date: Fri, 19 Sep 2014 14:25:05 +0400 > From: Dmitry Gutov > CC: 18504@debbugs.gnu.org > > On 09/19/2014 10:21 AM, Eli Zaretskii wrote: > > > I have no idea, since the recipe includes too many factors, and the > > problem is intermittent and timing dependent. Need a simpler recipe. > > That's too bad. Indeed. But it's impossible to debug what you described, at least I don't know how to do that, not without a recipe that can reliably trigger the problem. > Wouldn't setting a conditional breakpoint help? Conditional breakpoint where? With these issues, the only way to find the bug is to step through the offending code _before_ it produces the wrong values. So we need a condition that happens at the beginning of that code, not where it produces the final wrong results.