From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Kangas Newsgroups: gmane.emacs.bugs Subject: bug#33345: 27.0.50; Abort in bidi_cache_iterator_state Date: Wed, 25 Nov 2020 01:53:21 -0800 Message-ID: References: <83in13a9fi.fsf@gnu.org> <8336s69t32.fsf@gnu.org> <83tvkm89sw.fsf@gnu.org> <83in1097kh.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="38805"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: 33345@debbugs.gnu.org To: Stefan Monnier Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Nov 25 10:54:20 2020 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1khrVE-000A1Q-GL for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 25 Nov 2020 10:54:20 +0100 Original-Received: from localhost ([::1]:56160 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1khrVC-0007Xg-Ak for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 25 Nov 2020 04:54:19 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:38138) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1khrUv-0007Ww-UM for bug-gnu-emacs@gnu.org; Wed, 25 Nov 2020 04:54:01 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:51113) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1khrUv-0006NP-LV for bug-gnu-emacs@gnu.org; Wed, 25 Nov 2020 04:54:01 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1khrUv-0002tK-J5 for bug-gnu-emacs@gnu.org; Wed, 25 Nov 2020 04:54:01 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Stefan Kangas Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 25 Nov 2020 09:54:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 33345 X-GNU-PR-Package: emacs Original-Received: via spool by 33345-submit@debbugs.gnu.org id=B33345.160629800911069 (code B ref 33345); Wed, 25 Nov 2020 09:54:01 +0000 Original-Received: (at 33345) by debbugs.gnu.org; 25 Nov 2020 09:53:29 +0000 Original-Received: from localhost ([127.0.0.1]:34426 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1khrUO-0002sT-Rs for submit@debbugs.gnu.org; Wed, 25 Nov 2020 04:53:29 -0500 Original-Received: from mail-ej1-f48.google.com ([209.85.218.48]:40451) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1khrUO-0002s8-3H for 33345@debbugs.gnu.org; Wed, 25 Nov 2020 04:53:28 -0500 Original-Received: by mail-ej1-f48.google.com with SMTP id oq3so2108762ejb.7 for <33345@debbugs.gnu.org>; Wed, 25 Nov 2020 01:53:27 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:in-reply-to:references:user-agent :mime-version:date:message-id:subject:to:cc; bh=xEVkblRryLebSp7bWte0e8OMA1FJA9Hzt2xNoeldPwI=; b=YrMRPicw+EJDy8st4XjknkHLW5ORauXbq4LtM4tKH160LbjkXwB0MIBwViLygYjdyz EDXv+V3eeSZqdoeSv3i5lkaW4bynjKOc/HYcWR+03V1rxJkEyr4On0FzPMB6001+8rod +9HMS5V2Np/MywkBgx7grksyj7ieBWrkWZx8N5CG5I58GEtYA5gtOFYt1hX+ajR4i4SN WRUeA2nyRiJg0kh/qG8kI/JL8H0z5j7FectMMfL6YO6RiSWmNrbTMKbAYsk/pcUzvjOQ qtWsE/lsRaGf7aUbMDSz+28M1+2URBFGA0qXp33Uo9itdrbjGc5NB15KlHWQHocpTWTV 9CbQ== X-Gm-Message-State: AOAM533ZVygkriOngxJ9bttOr13/Y0vZx4SMJk+u09gE4Rq3DntklAe0 bUeD3AJnS798Hjeqg4WWi9bZDOR4+8gX5w6lc1J0Wpbt X-Google-Smtp-Source: ABdhPJzapBkA0Z/moPcrCd0Pcy2jnO223kFge/IywjZeIfGtF0cZHu20x+F48ark+w5eOWd9eCXPDBx3UXCfTdSzTDI= X-Received: by 2002:a17:906:614a:: with SMTP id p10mr2435468ejl.312.1606298002444; Wed, 25 Nov 2020 01:53:22 -0800 (PST) Original-Received: from 753933720722 named unknown by gmailapi.google.com with HTTPREST; Wed, 25 Nov 2020 01:53:21 -0800 In-Reply-To: (Stefan Monnier's message of "Tue, 13 Nov 2018 13:28:23 -0500") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list 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-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:194179 Archived-At: Stefan Monnier writes: >> But this means that the cache is empty, and we can never scan back >> (scan_dir = -1) when the cache is empty. So something very strange >> happened there. > > I think it's a case of memory corruption and doesn't really have much to > do with bidi code. But I'm not progressing very fast: it's somewhat > deterministic but it is influenced by elements I'm not aware of, so it's > pretty nasty. > >> Instead of me asking you gobs of questions, perhaps you could give me >> an ssh login on that system, and arrange for a GDB session which >> already hit the call to emacs_abort to be in a state where I can >> switch to it after logging in (with 'screen' or 'tmux', I think). >> Then I could look around and see if I find out some clues. > > It's a machine that's not reachable from the internet and is off most of > the time. I haven't yet managed to reproduce it on another machine. > I'll let you know when I'm making progress, This bug was reported 2 years ago, so just pinging to see if it's still relevant. Thanks.