From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#71693: 30.0.50, SIGSEGV in FRAME_TTY (sf) in redisplay_internal Date: Fri, 21 Jun 2024 17:18:07 +0300 Message-ID: <865xu2l6qo.fsf@gnu.org> References: Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="3017"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 71693@debbugs.gnu.org To: Daniel Clemente Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Fri Jun 21 18:25:15 2024 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 1sKh4b-0000YS-I7 for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 21 Jun 2024 18:25:13 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sKh4S-00020X-Qm; Fri, 21 Jun 2024 12:25:04 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sKh4R-00020D-F5 for bug-gnu-emacs@gnu.org; Fri, 21 Jun 2024 12:25:03 -0400 Original-Received: from debbugs.gnu.org ([2001:470:142:5::43]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sKh4R-0004L2-53 for bug-gnu-emacs@gnu.org; Fri, 21 Jun 2024 12:25:03 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1sKh4Q-0000aP-AJ for bug-gnu-emacs@gnu.org; Fri, 21 Jun 2024 12:25:02 -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, 21 Jun 2024 16:25:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 71693 X-GNU-PR-Package: emacs Original-Received: via spool by 71693-submit@debbugs.gnu.org id=B71693.17189871012241 (code B ref 71693); Fri, 21 Jun 2024 16:25:02 +0000 Original-Received: (at 71693) by debbugs.gnu.org; 21 Jun 2024 16:25:01 +0000 Original-Received: from localhost ([127.0.0.1]:43123 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1sKh4O-0000Zu-SF for submit@debbugs.gnu.org; Fri, 21 Jun 2024 12:25:01 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:58460) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1sKh4N-0000ZY-KL for 71693@debbugs.gnu.org; Fri, 21 Jun 2024 12:24:59 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sKf5f-00030R-GN; Fri, 21 Jun 2024 10:18:11 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=HMcQ2O+cvH56ojaL7KhevMvnzR3uJNRHmBEbEytlb5E=; b=ivw8meiI8DoQ ZfTsVdJYcn9Ljhn0ZVzSqrzY4FK0rirtxxSS/9ykkiM5esZ1Pa/X2FSPzZfGYYO34if/PdpBjIKdf Wx2t+fSk0xv0YaB8K9ZV0IIFGxFoBDr8xmugs0g9vuxFSh9JIlGgmoS1bn+7Ms/KwhY2J9VCq4QUZ slmh3APqIj5lp6B73kBteRJRAXOB4He20oCnemxUWMYeMCZ8hj0IHVhqAW6Ba7K8pPVLfTWUbKPl2 4mE9G/01iIqC35nA3nHcWK+qiOCvdfRz9F27ZdSTxjyqucUHNX18yjy3hbQ6zKDdmX1Iqjq8NzoMd 62bE+dVcGV+rUJ2Ti/2OSA==; In-Reply-To: (message from Daniel Clemente on Fri, 21 Jun 2024 10:46:58 +0000) 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-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:287619 Archived-At: > From: Daniel Clemente > Date: Fri, 21 Jun 2024 10:46:58 +0000 > > I enabled -fsanitize. I'm using an X terminal to run TTY Emacs inside. > I opened the daemon inside gdb with emacs --fg-daemon -Q Did you follow the advice and notes in etc/DEBUG regarding runn ing Emacs compiled with this option? > [Detaching after fork from child process 5364] > xdisp.c:16932:10: runtime error: member access within null pointer of > type 'struct terminal' > > Program received signal SIGSEGV, Segmentation fault. > 0x0000555556610d93 in redisplay_internal () at xdisp.c:16932 > 16932 && FRAME_TTY (sf)->previous_frame != sf) If the claim is that sf->terminal is a NULL pointer, then how come we don't segfault when running a build without -fsanitize?