From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Alan Mackenzie Newsgroups: gmane.emacs.bugs Subject: bug#28280: Maximally unhelpful diagnostic message. Date: Tue, 29 Aug 2017 18:41:40 +0000 Message-ID: <20170829184140.GA4339@ACM> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: blaine.gmane.org 1504032328 24980 195.159.176.226 (29 Aug 2017 18:45:28 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Tue, 29 Aug 2017 18:45:28 +0000 (UTC) User-Agent: Mutt/1.7.2 (2016-11-26) To: 28280@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Aug 29 20:45:16 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 1dmlVb-0005SS-Ve for geb-bug-gnu-emacs@m.gmane.org; Tue, 29 Aug 2017 20:45:08 +0200 Original-Received: from localhost ([::1]:46510 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dmlVi-0002vA-PS for geb-bug-gnu-emacs@m.gmane.org; Tue, 29 Aug 2017 14:45:14 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:51197) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dmlVa-0002qP-6G for bug-gnu-emacs@gnu.org; Tue, 29 Aug 2017 14:45:09 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dmlVX-0000bk-3K for bug-gnu-emacs@gnu.org; Tue, 29 Aug 2017 14:45:06 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:52373) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1dmlVW-0000bX-Vc for bug-gnu-emacs@gnu.org; Tue, 29 Aug 2017 14:45:03 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1dmlVW-00045Q-Lf for bug-gnu-emacs@gnu.org; Tue, 29 Aug 2017 14:45:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Alan Mackenzie Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 29 Aug 2017 18:45:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: report 28280 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: X-Debbugs-Original-To: bug-gnu-emacs@gnu.org Original-Received: via spool by submit@debbugs.gnu.org id=B.150403229415675 (code B ref -1); Tue, 29 Aug 2017 18:45:02 +0000 Original-Received: (at submit) by debbugs.gnu.org; 29 Aug 2017 18:44:54 +0000 Original-Received: from localhost ([127.0.0.1]:32821 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dmlVO-00044l-Hp for submit@debbugs.gnu.org; Tue, 29 Aug 2017 14:44:54 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:60188) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dmlVM-00044Y-B9 for submit@debbugs.gnu.org; Tue, 29 Aug 2017 14:44:52 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dmlVG-0000UL-9U for submit@debbugs.gnu.org; Tue, 29 Aug 2017 14:44:47 -0400 Original-Received: from lists.gnu.org ([2001:4830:134:3::11]:35704) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dmlVG-0000UC-78 for submit@debbugs.gnu.org; Tue, 29 Aug 2017 14:44:46 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:51156) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dmlVF-0002pW-6H for bug-gnu-emacs@gnu.org; Tue, 29 Aug 2017 14:44:45 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dmlVC-0000SB-1y for bug-gnu-emacs@gnu.org; Tue, 29 Aug 2017 14:44:45 -0400 Original-Received: from ocolin.muc.de ([193.149.48.4]:31117 helo=mail.muc.de) by eggs.gnu.org with smtp (Exim 4.71) (envelope-from ) id 1dmlVB-0000RE-NU for bug-gnu-emacs@gnu.org; Tue, 29 Aug 2017 14:44:41 -0400 Original-Received: (qmail 16433 invoked by uid 3782); 29 Aug 2017 18:44:39 -0000 Original-Received: from acm.muc.de (p548C6CED.dip0.t-ipconnect.de [84.140.108.237]) by colin.muc.de (tmda-ofmipd) with ESMTP; Tue, 29 Aug 2017 20:44:38 +0200 Original-Received: (qmail 4367 invoked by uid 1000); 29 Aug 2017 18:41:40 -0000 Content-Disposition: inline X-Delivery-Agent: TMDA/1.1.12 (Macallan) X-Primary-Address: acm@muc.de X-detected-operating-system: by eggs.gnu.org: FreeBSD 9.x [fuzzy] 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:136348 Archived-At: Hello, Emacs. In GNU Emacs 25.2.3 (x86_64-unknown-linux-gnu, GTK+ Version 3.22.16) of 2017-08-15 built on ACM Configured using: 'configure --with-gif=no --with-tiff=no --with-gpm' Configured features: XPM JPEG PNG RSVG SOUND GPM DBUS GSETTINGS NOTIFY ACL GNUTLS LIBXML2 FREETYPE XFT ZLIB TOOLKIT_SCROLL_BARS GTK3 X11 I was just debugging some code when I was presented with the diagnostic: Assertion failed: (eq 10 (char-before)) . Just that. Nothing else. No backtrace, no context, no nothing. This is not helpful. I request that consideration be given to providing one or more of these details when assertion code triggers. Thanks! -- Alan Mackenzie (Nuremberg, Germany).