Stefan Kangas <stefankangas@HIDDEN>
to control <at> debbugs.gnu.org.
Full text available.Received: (at 71693) by debbugs.gnu.org; 26 Jun 2024 13:30:38 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Wed Jun 26 09:30:37 2024 Received: from localhost ([127.0.0.1]:38810 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1sMSjN-0000LV-LF for submit <at> debbugs.gnu.org; Wed, 26 Jun 2024 09:30:37 -0400 Received: from mail-ed1-f48.google.com ([209.85.208.48]:57809) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <n142857@HIDDEN>) id 1sMSjL-0000L6-JU for 71693 <at> debbugs.gnu.org; Wed, 26 Jun 2024 09:30:36 -0400 Received: by mail-ed1-f48.google.com with SMTP id 4fb4d7f45d1cf-57d07f07a27so332376a12.3 for <71693 <at> debbugs.gnu.org>; Wed, 26 Jun 2024 06:30:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1719408567; x=1720013367; darn=debbugs.gnu.org; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=RhhbVLmlH2FYMHeLVMzKDCr5yK2YTMkRnEvm3lYUbqs=; b=MbkoeT2aYmlQQjp0NayUEnOcOoDqZl0dGaMtXFIYcS4VF44eHolwFKhHduSjBUTseK r3yHKdIWcX6hEApnR65V5fPeNWBufrtu+WifdJew0OVHKvHHQAyCAKiKtoK6BeW3q6Ow BvzxGmnlpRld+PciJojKxsZs6habXzrZzOCUO9pP7JfFCtIncz09fjQKvI+gwiXvhUT6 fXYcLqYAvRCJMKcAyIGWLOgu+w5/4/ZSQX9cw94zqTkShLSY47Ru+z6/kl/jdORb8SMM qGT0FeYeKPpJZQzpDRk+C2+z8IY5vWvQhIZ4L8AzAYUZfqfhWbInE1NiDbFgOy5t/NPq Vovg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1719408567; x=1720013367; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=RhhbVLmlH2FYMHeLVMzKDCr5yK2YTMkRnEvm3lYUbqs=; b=FokZfu3gAnjjhXE3P0dIs5bRgkHvJtaDMK7ZVe3eEquUOAGYB88zukaC5alM80u7xv /yAr7UHmFVA02UPdLemSInWvkOBhu3ADaFAp89xWhkRG4+3KoPxFlzMMwz545/g8neYg 9IRkdQKnFLhR54dtaa1Wsw4Hzs+y/1jHWZfxExCgNbUvNYmD6wb9Z3HGvvoCcipsq8Fh xZRgu2fwsRF6V69QZASA5H3taDug0XJXZNwHnZIHwHd0J3PmWU/vdyTCZx/sDVgzUNN4 3w8qTGHaTiypmwSWMfybDjPC+SIoypIFFg9lI29KNmg/epm26VD/ZBL3NZ8Ds+l/Ms+7 EQjw== X-Gm-Message-State: AOJu0YzKv/Dk8WXRv9OWRQ/+DklFhvoMiYPBMxej9sN0dQyTuoYxpHJa xH/k0YdTRDmFX8wuth/T6JTlGdzUQ9YhqZ7JnyEZ3bsYhUNpiXdyHXw2gt5Il7pQVmFjIuF8MJA ONqMd7nOsYcJQZkf2d03SLoQGJvk= X-Google-Smtp-Source: AGHT+IHYtLMk7QmjFi/2x5ph6N0P2cG1weMPka/7fC/syH50Dal9Bwwdr9RnW5uHodaE9x1zsr07Z36DxkLKCDXaXUY= X-Received: by 2002:a50:c054:0:b0:57d:669:cafb with SMTP id 4fb4d7f45d1cf-57d70075c73mr4755503a12.40.1719408567282; Wed, 26 Jun 2024 06:29:27 -0700 (PDT) MIME-Version: 1.0 References: <CAJKAhPBsP+AZoSykS5-bLZRxSyHdf3bJm6QxOtWbquwvSNJRyw@HIDDEN> <865xu2l6qo.fsf@HIDDEN> In-Reply-To: <865xu2l6qo.fsf@HIDDEN> From: Daniel Clemente <n142857@HIDDEN> Date: Wed, 26 Jun 2024 13:28:58 +0000 Message-ID: <CAJKAhPDuOP9NpEexwqBMikU4=AFTNEngNv=5J7KKk-POzFt6=A@HIDDEN> Subject: Re: bug#71693: 30.0.50, SIGSEGV in FRAME_TTY (sf) in redisplay_internal To: Eli Zaretskii <eliz@HIDDEN> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Spam-Score: 0.2 (/) X-Debbugs-Envelope-To: 71693 Cc: 71693 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -0.8 (/) > > > > 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? I missed some things. For instance I used this: -fsanitize=3Dundefined,address,bounds-strict,float-cast-overflow '' But I didn't notice this: Address sanitization is incompatible with undefined-behavior sanitization, unfortunately If you want me to enable just one for next reports, please tell me which one. For now I think I'll disable the whole -fsanitize, because of the false positives. > > > [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 !=3D 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? Even with -fsanitize, it didn't crash each time, just this particular time. I have seen similar crashes in redisplay code even without -fsanitize, but none at this particular line and none doing something as simple as opening and closing 3 frames. I also thought that maybe I had enabled so many debug options (-O0, -fsanitize, =E2=80=A6) that my emacs become slower and therefore more prone= to errors that depend on timing, like things happening at specific points of the frame opening and closing code. But this report may be bogus and you may close it if it seems so.
bug-gnu-emacs@HIDDEN:bug#71693; Package emacs.
Full text available.Received: (at 71693) by debbugs.gnu.org; 21 Jun 2024 16:25:01 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Jun 21 12:25:01 2024 Received: from localhost ([127.0.0.1]:43123 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1sKh4O-0000Zu-SF for submit <at> debbugs.gnu.org; Fri, 21 Jun 2024 12:25:01 -0400 Received: from eggs.gnu.org ([209.51.188.92]:58460) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1sKh4N-0000ZY-KL for 71693 <at> debbugs.gnu.org; Fri, 21 Jun 2024 12:24:59 -0400 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 <eliz@HIDDEN>) 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==; Date: Fri, 21 Jun 2024 17:18:07 +0300 Message-Id: <865xu2l6qo.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Daniel Clemente <n142857@HIDDEN> In-Reply-To: <CAJKAhPBsP+AZoSykS5-bLZRxSyHdf3bJm6QxOtWbquwvSNJRyw@HIDDEN> (message from Daniel Clemente on Fri, 21 Jun 2024 10:46:58 +0000) Subject: Re: bug#71693: 30.0.50, SIGSEGV in FRAME_TTY (sf) in redisplay_internal References: <CAJKAhPBsP+AZoSykS5-bLZRxSyHdf3bJm6QxOtWbquwvSNJRyw@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 71693 Cc: 71693 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Daniel Clemente <n142857@HIDDEN> > 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?
bug-gnu-emacs@HIDDEN:bug#71693; Package emacs.
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