From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Noam Postavsky Newsgroups: gmane.emacs.bugs Subject: bug#35273: "Marker does not point anywhere" when reading next article Date: Tue, 16 Apr 2019 08:38:20 -0400 Message-ID: <87zhoqxgzn.fsf@gmail.com> References: <875zrgpusw.fsf@vuxu.org> <87lg0czgy1.fsf@tcd.ie> <8736mkgu83.fsf@vuxu.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="134583"; mail-complaints-to="usenet@blaine.gmane.org" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.2 (gnu/linux) Cc: "Basil L. Contovounesios" , 35273@debbugs.gnu.org To: Leah Neukirchen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Apr 16 14:39:13 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1hGNMj-000YpR-Ue for geb-bug-gnu-emacs@m.gmane.org; Tue, 16 Apr 2019 14:39:10 +0200 Original-Received: from localhost ([127.0.0.1]:36029 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hGNMi-0007P9-TP for geb-bug-gnu-emacs@m.gmane.org; Tue, 16 Apr 2019 08:39:08 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:58074) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hGNMd-0007P3-Kh for bug-gnu-emacs@gnu.org; Tue, 16 Apr 2019 08:39:04 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hGNMc-00059i-Pd for bug-gnu-emacs@gnu.org; Tue, 16 Apr 2019 08:39:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:51463) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1hGNMc-00059S-K3 for bug-gnu-emacs@gnu.org; Tue, 16 Apr 2019 08:39:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1hGNMc-0004ny-2T; Tue, 16 Apr 2019 08:39:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Noam Postavsky Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org, bugs@gnus.org Resent-Date: Tue, 16 Apr 2019 12:39:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 35273 X-GNU-PR-Package: emacs,gnus Original-Received: via spool by 35273-submit@debbugs.gnu.org id=B35273.155541831518434 (code B ref 35273); Tue, 16 Apr 2019 12:39:02 +0000 Original-Received: (at 35273) by debbugs.gnu.org; 16 Apr 2019 12:38:35 +0000 Original-Received: from localhost ([127.0.0.1]:36773 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1hGNMB-0004nG-DJ for submit@debbugs.gnu.org; Tue, 16 Apr 2019 08:38:35 -0400 Original-Received: from mail-qt1-f177.google.com ([209.85.160.177]:44801) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1hGNM6-0004mx-0G for 35273@debbugs.gnu.org; Tue, 16 Apr 2019 08:38:33 -0400 Original-Received: by mail-qt1-f177.google.com with SMTP id w5so22969195qtb.11 for <35273@debbugs.gnu.org>; Tue, 16 Apr 2019 05:38:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:references:date:in-reply-to:message-id :user-agent:mime-version; bh=AInWwY7nfFBjH217qcQ+ZbhnVrW1lspuiTbvL6kfpr0=; b=uMhLd1gk9vRml6fgCF94jDCtp05S+jfqbxcV7AvqVVZm6xNZ/FHJjnWNJKWSd3oVfR oj0rnjIs/2QsDYgC1v1l1WTuKx0898C5dne2uWf924bsFG+ncGBjWkSvTOdDD+qwqgsH fGbWSlHc4fV9c3dvW0z58b9TkpOZeMtVTqWAzRE/TNOJvqTqIqYXetXwaz+LR2E18vhW Yvr3BczXFxouczP7cKD02u1Khkg1r3Bob822N9X/h3etk9VtQvstsFdWQBkUsYi+sl4w 0Aoqgaqx2JFPA3EjAlIJebZAc+Z6lI8taskxxgH1aWmdXcXyUktjfRAHF09U3zu7Vl3n swIQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:references:date:in-reply-to :message-id:user-agent:mime-version; bh=AInWwY7nfFBjH217qcQ+ZbhnVrW1lspuiTbvL6kfpr0=; b=H5/npOm8YSlJfKjO9FxvJuSlfNR1FL3sozxzOy/74oExM+bUrQ9MhqLzteEiWRiclB EK5Fn1hKtbgLS12pyLSHTgCrVeXFm8gF98gtTxv5HsmrVunWMBL5SyYyw4MoUtL7Pn3Y bT6ikTr56WmllhTtqrky8qW8TpS2KLVQTJs0SUTyj4YAbGWV1Ql9zCzmdSFimhNWhgQO 29t1hNgFmk+x/XTfhxh0V2k0gLotw6ygfp0a7aTvOH+dB18ozK+oYWMOxIZs2SJcTJ0b wJdLTc5QdJecM1sA9YmZpGKP+MHGoNP7ETtR6QVrRpxgLT8sR/t6q9rcppBX6peSM6z0 7fvA== X-Gm-Message-State: APjAAAWOtsgbfJCG/2SZapAhOKt7r/j2S1tjf6ldthhHxnWbhwl9LQv4 6znZ+QYnbJ29qESshGQ/7AOIEW+c X-Google-Smtp-Source: APXvYqyuhQkRQytigQvS9gOVdetW9Foi+0tSxBLdoYC86v1kUyid+Lap+0S+aW9FrL0KEQDC1gsHJw== X-Received: by 2002:a0c:aee6:: with SMTP id n38mr64858089qvd.43.1555418303163; Tue, 16 Apr 2019 05:38:23 -0700 (PDT) Original-Received: from minid (cbl-45-2-119-34.yyz.frontiernetworks.ca. [45.2.119.34]) by smtp.googlemail.com with ESMTPSA id y34sm33381018qta.96.2019.04.16.05.38.20 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 16 Apr 2019 05:38:21 -0700 (PDT) In-Reply-To: <8736mkgu83.fsf@vuxu.org> (Leah Neukirchen's message of "Sun, 14 Apr 2019 23:19:56 +0200") 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: 209.51.188.43 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:157707 Archived-At: Leah Neukirchen writes: > If you have other ideas how I can debug it myself, please tell me. If you can reproduce it reliably, setting (setq debug-on-signal t) just before might help get a backtrace. If that also doesn't work you could record the backtrace from a signal-hook-function: (defvar bug-35273-last-backtrace nil) (defun bug-35273-record-backtrace (err data) (when (and (eq err 'error) (equal data '("Marker does not point anywhere"))) (setq bug-35273-last-backtrace (backtrace-frames 'signal))) (let ((signal-hook-function nil)) (signal err data))) (setq signal-hook-function #'bug-35273-record-backtrace) Or if you can run under gdb, just set a breakpoint in the C code where that error is raised.