Gerd Möllmann <gerd.moellmann@HIDDEN>
to control <at> debbugs.gnu.org
.
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[2003:e0:b707:6c00:3c47:7b84:fae4:4a32]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-43d8ff042c8sm882665e9.27.2025.03.27.10.16.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Mar 2025 10:16:26 -0700 (PDT) From: =?utf-8?Q?Gerd_M=C3=B6llmann?= <gerd.moellmann@HIDDEN> To: Daniel Clemente <n142857@HIDDEN> Subject: Re: bug#77233: 31.0.50; crash if message starts with a space and then without it In-Reply-To: <CAJKAhPAORTS5WqdT8N-HQQ1p+BiEcsoBSnDnXD0XNdSUR+mH3Q@HIDDEN> References: <CAJKAhPCBJUoxuK-9HSBfyvstsJE3n4YJUSY-EMav_75DUYcFGQ@HIDDEN> <867c4efuyx.fsf@HIDDEN> <87jz8eectq.fsf@HIDDEN> <86zfhae1e5.fsf@HIDDEN> <m2pli65jkq.fsf@HIDDEN> <8734f2dyh3.fsf@HIDDEN> <CAJKAhPBYdLFc6zajj4GjF1QYBRGcPoF=v-68eJbEDe4Lp4k_hg@HIDDEN> <m24izf12ds.fsf@HIDDEN> <CAJKAhPAORTS5WqdT8N-HQQ1p+BiEcsoBSnDnXD0XNdSUR+mH3Q@HIDDEN> Date: Thu, 27 Mar 2025 18:16:25 +0100 Message-ID: <m2v7rumm1i.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 77233 Cc: 77233 <at> debbugs.gnu.org, Pip Cet <pipcet@HIDDEN>, Eli Zaretskii <eliz@HIDDEN> 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: -1.0 (-) Daniel Clemente <n142857@HIDDEN> writes: >> Anyway. Since nobody complained about my patch while I was away, I've >> pushed something like that now. Could you please give it a try, Daniel? > > It's fixed now, and I can't reproduce the crash in any of the terminal > emulators mentioned. I tried: > - with zone-pgm-stress (or others) > - running zone, while resizing the terminal emulator > - with very small window sizes > - with other messages (e.g. garbage-collection-messages) are appearing > while zone-pgm-stress runs > > Editing and everything else works normally. > > So thanks!, and I think the bug can be closed. Thanks for testing. And closing.
bug-gnu-emacs@HIDDEN
:bug#77233
; Package emacs
.
Full text available.Received: (at 77233) by debbugs.gnu.org; 27 Mar 2025 17:10:10 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Mar 27 13:10:10 2025 Received: from localhost ([127.0.0.1]:51130 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1txqk6-00072e-3h for submit <at> debbugs.gnu.org; Thu, 27 Mar 2025 13:10:10 -0400 Received: from mail-vk1-xa2e.google.com ([2607:f8b0:4864:20::a2e]:57351) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.84_2) (envelope-from <n142857@HIDDEN>) id 1txqk2-00071W-Tk for 77233 <at> debbugs.gnu.org; Thu, 27 Mar 2025 13:10:07 -0400 Received: by mail-vk1-xa2e.google.com with SMTP id 71dfb90a1353d-524125f6cadso1200718e0c.2 for <77233 <at> debbugs.gnu.org>; Thu, 27 Mar 2025 10:10:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1743095401; x=1743700201; darn=debbugs.gnu.org; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=KfCL6xrzdRS5gBLDdeWe6Vgl+VGNidLagWz9gMQpTwg=; b=aOfcNmuyQ0YBigMMbpluWZEXq8x/O7D1RMKILPQH4dXQyEnHNIHsxau8MBDPIeAvMA s25JcAXX66Wd+dHBvdX73kgZECkEJabfXz2+qPJWWJCYhiI6J+/SFfmGUhkSyF3i2NJ5 s+kU0pwoQsrs0AO9eIlCdqA7doDNvf05bh1ZCe2ftz+SqOtMPldwxrmNMF0Amem0hXSN b0uLGSLtyq18hswNwkrXaXyiqo4qc1n++mdMnn/g5jOlyZA0/qy67FBiDFmyIrRiq0eY PnkQtn27NV7Qkct/Y7Jul2nBL5AhDV7y/xzNRbEOy8+dsa91bs82nVkHRdiwhQe1aTfh v6+Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1743095401; x=1743700201; h=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=KfCL6xrzdRS5gBLDdeWe6Vgl+VGNidLagWz9gMQpTwg=; b=oeqSPeo9ErMkvpkyhCqfedAxKSZNpRDqYaUECGkU/Zel/yacb0HKGOG6tVRrcR9yS4 vWmvJXiry4N/OQi87+89HO3HcalIUM7sjAP1qN8ViCpIRw+Z8MwIcY6MdyPoEebAqdvd 2KhyXAyb+1hntpmBvHo/4M3R+hyeHnCq/kY/1fWnENGDx7Yi5MaadI5PKL60e6ZsgfkP ZMbKPnUVyffcwD3Zzcj0DY6z6iqkd57/IOTGO4lSunk045XhyBdrp/B2uw3xhf84VRU4 VO9NiZtPgWxC4CXvvbm5WdsLIFw4uRb2doB8NjI9Ih2Tw27hYRMHvkS1i2vXS/ZPmcXb TYSw== X-Forwarded-Encrypted: i=1; AJvYcCVXHEAi8CNaVGF8qYfHVWV/O+xgIR0R/VOrGrAsxBZJSGoGa/rnhbNit4asQ+xs3Gm94u+jcw==@debbugs.gnu.org X-Gm-Message-State: AOJu0YyLvI/NX7yHrK90UGDJe9awtZU0hUtn2dVlKYQfkSYrfYnispLV sv8fxd/bki5HdhkQi159PI9qNXaWHqOjheylW7g47CpSLuqgfbzsahBvFlY8C2tBf6CYAetncYa 15nkpQZFIlzMRVyTxvwULTTC2s7c= X-Gm-Gg: ASbGncs0tz3d7Ugdgo5KkIsYNx+r1C4w+y+v+YITCNUMAvaiUgNNXJDQMyP0zj0aNED YUPwx+WkHfGsPCoj64rYBtQocvJ9Z9gMaLUoubRZr2COtuzLEBj7tj1N4UdOhujHg/Q9Gzy9bH0 C6Ltjkq657rKFl8L4QL+Lj/EeaFg== X-Google-Smtp-Source: AGHT+IEXPiaMoJ8btIZEpkkm2JKTeIpbK0eUjSZDxJFJhUCVeOpcsV48Rgdw8Jt7tdLovbXdr75Jfeqc0eVnaw5NKzE= X-Received: by 2002:a05:6122:6144:b0:520:5a87:66f0 with SMTP id 71dfb90a1353d-526006ed183mr4019837e0c.0.1743095400857; Thu, 27 Mar 2025 10:10:00 -0700 (PDT) MIME-Version: 1.0 References: <CAJKAhPCBJUoxuK-9HSBfyvstsJE3n4YJUSY-EMav_75DUYcFGQ@HIDDEN> <867c4efuyx.fsf@HIDDEN> <87jz8eectq.fsf@HIDDEN> <86zfhae1e5.fsf@HIDDEN> <m2pli65jkq.fsf@HIDDEN> <8734f2dyh3.fsf@HIDDEN> <CAJKAhPBYdLFc6zajj4GjF1QYBRGcPoF=v-68eJbEDe4Lp4k_hg@HIDDEN> <m24izf12ds.fsf@HIDDEN> In-Reply-To: <m24izf12ds.fsf@HIDDEN> From: Daniel Clemente <n142857@HIDDEN> Date: Thu, 27 Mar 2025 17:09:31 +0000 X-Gm-Features: AQ5f1JoMIw_HG2DGC1G6FcU4uhEJFHReKOOrFvkHXBDJbFF0FHlslVJ4dp24d-4 Message-ID: <CAJKAhPAORTS5WqdT8N-HQQ1p+BiEcsoBSnDnXD0XNdSUR+mH3Q@HIDDEN> Subject: Re: bug#77233: 31.0.50; crash if message starts with a space and then without it To: =?UTF-8?Q?Gerd_M=C3=B6llmann?= <gerd.moellmann@HIDDEN> Content-Type: text/plain; charset="UTF-8" X-Spam-Score: 0.3 (/) X-Debbugs-Envelope-To: 77233 Cc: 77233 <at> debbugs.gnu.org, Pip Cet <pipcet@HIDDEN>, Eli Zaretskii <eliz@HIDDEN> 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: -0.7 (/) > Anyway. Since nobody complained about my patch while I was away, I've > pushed something like that now. Could you please give it a try, Daniel? It's fixed now, and I can't reproduce the crash in any of the terminal emulators mentioned. I tried: - with zone-pgm-stress (or others) - running zone, while resizing the terminal emulator - with very small window sizes - with other messages (e.g. garbage-collection-messages) are appearing while zone-pgm-stress runs Editing and everything else works normally. So thanks!, and I think the bug can be closed.
bug-gnu-emacs@HIDDEN
:bug#77233
; Package emacs
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[2003:e0:b707:6c00:9105:bebb:99c1:9f6c]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3997f9a31a7sm18436306f8f.23.2025.03.26.22.14.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 26 Mar 2025 22:14:24 -0700 (PDT) From: =?utf-8?Q?Gerd_M=C3=B6llmann?= <gerd.moellmann@HIDDEN> To: Daniel Clemente <n142857@HIDDEN> Subject: Re: bug#77233: 31.0.50; crash if message starts with a space and then without it In-Reply-To: <CAJKAhPBYdLFc6zajj4GjF1QYBRGcPoF=v-68eJbEDe4Lp4k_hg@HIDDEN> References: <CAJKAhPCBJUoxuK-9HSBfyvstsJE3n4YJUSY-EMav_75DUYcFGQ@HIDDEN> <867c4efuyx.fsf@HIDDEN> <87jz8eectq.fsf@HIDDEN> <86zfhae1e5.fsf@HIDDEN> <m2pli65jkq.fsf@HIDDEN> <8734f2dyh3.fsf@HIDDEN> <CAJKAhPBYdLFc6zajj4GjF1QYBRGcPoF=v-68eJbEDe4Lp4k_hg@HIDDEN> Date: Thu, 27 Mar 2025 06:14:23 +0100 Message-ID: <m24izf12ds.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 77233 Cc: 77233 <at> debbugs.gnu.org, Pip Cet <pipcet@HIDDEN>, Eli Zaretskii <eliz@HIDDEN> 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: -1.0 (-) Daniel Clemente <n142857@HIDDEN> writes: > On first thought it seems safer to avoid printing at (cols-1, rows-1) > when we know that AutoWrap is enabled=E2=80=A6 I agree. That auto-wrap code is there since the very beginning, added to Emacs 1985, derived from public domain code which is even older of course (VT100 is from the mid 70s). Of course it would be nice if the code could be "modernized", but who's gone do that, realistically? Anyway. Since nobody complained about my patch while I was away, I've pushed something like that now. Could you please give it a try, Daniel?
bug-gnu-emacs@HIDDEN
:bug#77233
; Package emacs
.
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crash if message starts with a space and then without it To: Pip Cet <pipcet@HIDDEN> Content-Type: multipart/mixed; boundary="00000000000084220006313f985d" X-Spam-Score: 0.3 (/) X-Debbugs-Envelope-To: 77233 Cc: =?UTF-8?Q?Gerd_M=C3=B6llmann?= <gerd.moellmann@HIDDEN>, 77233 <at> debbugs.gnu.org, Eli Zaretskii <eliz@HIDDEN> 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: -0.7 (/) --00000000000084220006313f985d Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable > > If it's urgent, maybe try to comment out the emacs_abort in cmcheckmagi= c > > and see if that suffices. > > That avoids the crash here, and things work fine in an xterm, but it > means we printed a character with the cursor at (cols-1,rows-1), which > allegedly would have caused some (old, I assume?) terminals to scroll by > a line, destroying the entire Emacs layout... > > However, xterm and M-x term both handle this situation sensibly, not > scrolling the frame. Is anyone aware of a terminal emulator that > scrolls in this situation? If I comment the emacs_abort, I see everything scroll 1 line upwards, in many terminals: xterm, urxvt, mlterm, Eterm, lxterm, cool-retro-term. Every C-x C-e scrolls it 1 line. C-l fixes it. I have several customizations in .Xresources that may affect what I'm seeing in some terminal, but not in all the ones I tested. I don't know why doesn't your Emacs-in-xterm scroll. Did you run the part that sets the background color? On first thought it seems safer to avoid printing at (cols-1, rows-1) when we know that AutoWrap is enabled=E2=80=A6 I know this is a different language and scenario, but I just checked ncurses in Python, and it rejects writing at the bottom right corner: File "/n/cursor1.py", line 41, in main stdscr.addstr(y, x, letter, curses.color_pair(1)) _curses.error: addwstr() returned ERR However, with C and using terminal sequences, I saw it's possible to print at the bottom right without scrolling, in all of the terminal emulators mentioned above. I attach a test program that prints a letter in all four corners and in the center, and doesn't scroll. I don't know why Emacs scrolls but this test program doesn't (even with autoscroll on). I don't know enough about terminals, so please forgive my small mistakes. --00000000000084220006313f985d Content-Type: text/x-csrc; charset="US-ASCII"; name="cursor2.c" Content-Disposition: attachment; filename="cursor2.c" Content-Transfer-Encoding: base64 Content-ID: <f_m8q0f8sx0> X-Attachment-Id: f_m8q0f8sx0 I2luY2x1ZGUgPHN0ZGlvLmg+CiNpbmNsdWRlIDxzdGRsaWIuaD4KI2luY2x1ZGUgPHN0cmluZy5o PgojaW5jbHVkZSA8dW5pc3RkLmg+CiNpbmNsdWRlIDx0ZXJtaW9zLmg+CiNpbmNsdWRlIDxzeXMv aW9jdGwuaD4KCi8vIEFOU0kgZXNjYXBlIHNlcXVlbmNlcwojZGVmaW5lIENMRUFSX1NDUkVFTiAi XDAzM1tIXDAzM1tKIgojZGVmaW5lIENVUlNPUl9IT01FICJcMDMzW0giCiNkZWZpbmUgU0VUX1JF RF9CRyAiXDAzM1s0MW0iCiNkZWZpbmUgUkVTRVRfQVRUUiAiXDAzM1swbSIKI2RlZmluZSBNT1ZF X0NVUlNPUiAiXDAzM1slZDslZEgiCgp2b2lkIGdldF9zY3JlZW5fc2l6ZShpbnQgKmhlaWdodCwg aW50ICp3aWR0aCkgewogICAgc3RydWN0IHdpbnNpemUgdzsKICAgIGlvY3RsKFNURE9VVF9GSUxF Tk8sIFRJT0NHV0lOU1osICZ3KTsKICAgICpoZWlnaHQgPSB3LndzX3JvdzsKICAgICp3aWR0aCA9 IHcud3NfY29sOwp9Cgp2b2lkIG1vdmVfY3Vyc29yKGludCB5LCBpbnQgeCkgewogICAgcHJpbnRm KE1PVkVfQ1VSU09SLCB5ICsgMSwgeCArIDEpOwogICAgZmZsdXNoKHN0ZG91dCk7Cn0KCmludCBt YWluKCkgewogICAgaW50IGhlaWdodCwgd2lkdGg7CiAgICBjaGFyIGJ1ZmZlclsyNTZdOwogICAg CiAgICAvLyBHZXQgc2NyZWVuIGRpbWVuc2lvbnMKICAgIGdldF9zY3JlZW5fc2l6ZSgmaGVpZ2h0 LCAmd2lkdGgpOwogICAgCiAgICAvLyBDbGVhciBzY3JlZW4gYW5kIG1vdmUgY3Vyc29yIGhvbWUK ICAgIHByaW50ZigiJXMiLCBDTEVBUl9TQ1JFRU4pOwogICAgZmZsdXNoKHN0ZG91dCk7CiAgICAK ICAgIC8vIENhbGN1bGF0ZSBjZW50ZXIgcG9zaXRpb24KICAgIGludCBjZW50ZXJfeSA9IGhlaWdo dCAvIDI7CiAgICBpbnQgY2VudGVyX3ggPSB3aWR0aCAvIDI7CiAgICAKICAgIC8vIENvcm5lciBw b3NpdGlvbnMKICAgIGludCBwb3NpdGlvbnNbXVsyXSA9IHsKICAgICAgICB7MCwgMH0sICAgICAg ICAgICAvLyBUb3AtbGVmdAogICAgICAgIHswLCB3aWR0aCAtIDF9LCAgIC8vIFRvcC1yaWdodAog ICAgICAgIHtoZWlnaHQgLSAxLCAwfSwgIC8vIEJvdHRvbS1sZWZ0CiAgICAgICAge2hlaWdodCAt IDEsIHdpZHRoIC0gMX0sIC8vIEJvdHRvbS1yaWdodAogICAgICAgIHtjZW50ZXJfeSwgY2VudGVy X3h9ICAgICAvLyBDZW50ZXIKICAgIH07CiAgICAKICAgIGNoYXIgbGV0dGVyc1tdID0geydBJywg J0InLCAnQycsICdEJywgJ0UnfTsKICAgIAogICAgLy8gRGlzcGxheSBsZXR0ZXJzIHdpdGggZGVs YXlzCiAgICBmb3IoaW50IGkgPSAwOyBpIDwgNTsgaSsrKSB7CiAgICAgICAgbW92ZV9jdXJzb3Io cG9zaXRpb25zW2ldWzBdLCBwb3NpdGlvbnNbaV1bMV0pOwogICAgICAgIAogICAgICAgIGlmKGkg PCA0KSB7IC8vIENvcm5lcnMgZ2V0IHJlZCBiYWNrZ3JvdW5kCiAgICAgICAgICAgIHByaW50Zigi JXMlYyVzIiwgU0VUX1JFRF9CRywgbGV0dGVyc1tpXSwgUkVTRVRfQVRUUik7CiAgICAgICAgfSBl bHNlIHsgLy8gQ2VudGVyIGxldHRlciBnZXRzIG5vcm1hbCBiYWNrZ3JvdW5kCiAgICAgICAgICAg IHByaW50ZigiJWMiLCBsZXR0ZXJzW2ldKTsKICAgICAgICB9CiAgICAgICAgCiAgICAgICAgZmZs dXNoKHN0ZG91dCk7CiAgICAgICAgdXNsZWVwKDUwMDAwMCk7IC8vIDAuNSBzZWNvbmRzCiAgICB9 CiAgICAKICAgIC8vIFdhaXQgMiBzZWNvbmRzIGJlZm9yZSBleGl0aW5nCiAgICBzbGVlcCgyKTsK ICAgIAogICAgcmV0dXJuIDA7Cn0K --00000000000084220006313f985d--
bug-gnu-emacs@HIDDEN
:bug#77233
; Package emacs
.
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bug-gnu-emacs@HIDDEN
:bug#77233
; Package emacs
.
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[2003:e0:b703:900:e45d:8300:2ab:c6c6]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3997f9ef155sm12475725f8f.89.2025.03.24.22.06.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Mar 2025 22:06:29 -0700 (PDT) From: =?utf-8?Q?Gerd_M=C3=B6llmann?= <gerd.moellmann@HIDDEN> To: Pip Cet <pipcet@HIDDEN> Subject: Re: bug#77233: 31.0.50; crash if message starts with a space and then without it In-Reply-To: <m2cye567hk.fsf@HIDDEN> References: <CAJKAhPCBJUoxuK-9HSBfyvstsJE3n4YJUSY-EMav_75DUYcFGQ@HIDDEN> <867c4efuyx.fsf@HIDDEN> <87jz8eectq.fsf@HIDDEN> <86zfhae1e5.fsf@HIDDEN> <878qoudyy6.fsf@HIDDEN> <m2h63i5gt8.fsf@HIDDEN> <m2cye567hk.fsf@HIDDEN> Date: Tue, 25 Mar 2025 06:06:29 +0100 Message-ID: <m28qot66ne.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="=-=-=" X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 77233 Cc: n142857@HIDDEN, Eli Zaretskii <eliz@HIDDEN>, 77233 <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: -1.0 (-) --=-=-= Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Gerd M=C3=B6llmann <gerd.moellmann@HIDDEN> writes: >> Something like that, yes. > > Or maybe simply use the glyph at string - 1 when cur_x =3D=3D last column. > STRING is always part of a row, and we don't have rows that are > only partially filled, or are so narrow that string - 1 isn't valid. Like this: --=-=-= Content-Type: text/x-patch Content-Disposition: attachment; filename=wrap.diff diff --git a/src/term.c b/src/term.c index a66cec252d5..46b3db7abeb 100644 --- a/src/term.c +++ b/src/term.c @@ -972,10 +972,18 @@ tty_write_glyphs (struct frame *f, struct glyph *string, int len) if (AutoWrap (tty) && curY (tty) + 1 == FRAME_TOTAL_LINES (f) && curX (tty) + len == FRAME_COLS (f) - && curX (tty) < FRAME_COLS (f) - 1 && len > 0) { - /* Write glyphs except the first. */ + /* If only outputting 1 glyph in the last column, make that two so + that we have something to shift into the last column. */ + if (curX (tty) == FRAME_COLS (f) - 1) + { + cmgoto (tty, curY (tty), curX (tty) - 1); + --string; + ++len; + } + + /* Write glyphs except the first. */ int old_x = curX (tty), old_y = curY (tty); tty_write_glyphs_1 (f, string + 1, len - 1); --=-=-= Content-Type: text/plain Sorry for being terse, have to get the train now :-). --=-=-=--
bug-gnu-emacs@HIDDEN
:bug#77233
; Package emacs
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[2003:e0:b703:900:e45d:8300:2ab:c6c6]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3997f9a3f81sm12892965f8f.35.2025.03.24.21.48.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Mar 2025 21:48:24 -0700 (PDT) From: =?utf-8?Q?Gerd_M=C3=B6llmann?= <gerd.moellmann@HIDDEN> To: Pip Cet <pipcet@HIDDEN> Subject: Re: bug#77233: 31.0.50; crash if message starts with a space and then without it In-Reply-To: <m2h63i5gt8.fsf@HIDDEN> References: <CAJKAhPCBJUoxuK-9HSBfyvstsJE3n4YJUSY-EMav_75DUYcFGQ@HIDDEN> <867c4efuyx.fsf@HIDDEN> <87jz8eectq.fsf@HIDDEN> <86zfhae1e5.fsf@HIDDEN> <878qoudyy6.fsf@HIDDEN> <m2h63i5gt8.fsf@HIDDEN> Date: Tue, 25 Mar 2025 05:48:23 +0100 Message-ID: <m2cye567hk.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 77233 Cc: n142857@HIDDEN, Eli Zaretskii <eliz@HIDDEN>, 77233 <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: -1.0 (-) Gerd M=C3=B6llmann <gerd.moellmann@HIDDEN> writes: > Pip Cet <pipcet@HIDDEN> writes: > >> "Eli Zaretskii" <eliz@HIDDEN> writes: >> >>>> Date: Mon, 24 Mar 2025 14:14:11 +0000 >>>> From: Pip Cet <pipcet@HIDDEN> >>>> Cc: Daniel Clemente <n142857@HIDDEN>, 77233 <at> debbugs.gnu.org >>>> >>>> "Eli Zaretskii" <eliz@HIDDEN> writes: >>>> >>>> >> #2 0x00005555556730a9 in cmcheckmagic (tty=3D0x555555a983a0) at cm= .c:122 >>>> >> 122 emacs_abort (); >>>> >> (gdb) list >>>> >> 117 if (frame_size_change_delayed (XFRAME (tty->top_frame))) >>>> >> 118 return; >>>> >> 119 if (curX (tty) =3D=3D FrameCols (tty)) >>>> >> 120 { >>>> >> 121 if (!MagicWrap (tty) || curY (tty) >=3D FrameRows (tty= ) - 1) >>>> >> 122 emacs_abort (); >>>> >> 123 if (tty->termscript) >>>> >> 124 putc ('\r', tty->termscript); >>>> >> 125 putc ('\r', tty->output); >>>> >> 126 if (tty->termscript) >>>> >> (gdb) p curY(tty) >>>> >> $1 =3D 60 >>>> >> (gdb) p FrameRows(tty)-1 >>>> >> $2 =3D 60 >>>> >> (gdb) p FrameCols(tty) >>>> >> $3 =3D 100 >>>> >> (gdb) >>>> > >>>> > What is the value of curX(tty) ? And if (as I'd expect) it is 100, >>>> > then do you have any idea how come it became 100 for a 2-character >>>> > message? >>>> >>>> It is equal to FrameCols (tty), as established in line 119 (this >>>> requires a breakpoint in emacs_abort rather than terminate_due_to_sign= al). >>>> >>>> > Can anyone else reproduce this? >>>> >>>> I can, on GNU/Linux with no special options and in an xterm. >>> >>> And you can explain how come curX(tty) got such a large value? >> >> We tried to print a character at (cols-1,rows-1), which left the >> remembered cursor position at (cols,rows-1). According to the comments >> in term.c, "some terminals" would have scrolled the entire terminal when >> we wrote that character, which is the situation detected by >> cmcheckmagic. >> >> The code Gerd pushed looks like this: >> >> static void >> tty_write_glyphs (struct frame *f, struct glyph *string, int len) >> { >> struct tty_display_info *tty =3D FRAME_TTY (f); >> /* Don't dare write in last column of bottom line, if Auto-Wrap, >> since that would scroll the whole frame on some terminals. */ >> if (AutoWrap (tty) >> && curY (tty) + 1 =3D=3D FRAME_TOTAL_LINES (f) >> && curX (tty) + len =3D=3D FRAME_COLS (f) >> && curX (tty) < FRAME_COLS (f) - 1 >> && len > 0) >> { >> /* Write glyphs except the first. */ >> int old_x =3D curX (tty), old_y =3D curY (tty); >> tty_write_glyphs_1 (f, string + 1, len - 1); >> >> /* Insert the first glyph, shifting the rest right. */ >> cmgoto (tty, old_y, old_x); >> tty_insert_glyphs (f, string, 1); >> } >> else >> tty_write_glyphs_1 (f, string, len); >> } >> >> in our case (len =3D=3D 1), we end up in the "else" branch because curX = =3D=3D >> cols - 1, attempting to print a single character in the bottom-right >> corner of the terminal. >> >> The "else" branch simply prints the character and leaves the cursor >> position "invalid". >> >> Note that xterm (the application) doesn't appear to scroll the terminal >> in this case, so it's a bit of a historical exercise to fix things on >> those terminals that would have, but IIUC, the right way is to retrieve >> the character at (cols-2,rows-1), goto (cols-2,rows-1), print the >> character that's supposed to end up at (cols-1,rows-1), goto >> (cols-2,rows-1) again, then print the retrieved character. >> >> This is complicated because we'd need to retrieve the character at >> (cols-2, rows-1) from the frame matrix if tty_write_glyphs is called >> with len =3D=3D 1 and the cursor is at (cols-1,rows-1). >> >> Anyway, here's a patch that does this, but it seems too complicated to >> be worth it to me: >> >> diff --git a/src/term.c b/src/term.c >> index e15b7a0887e..ccee6c650e3 100644 >> --- a/src/term.c >> +++ b/src/term.c >> @@ -971,16 +971,36 @@ tty_write_glyphs (struct frame *f, struct glyph *s= tring, int len) >> if (AutoWrap (tty) >> && curY (tty) + 1 =3D=3D FRAME_TOTAL_LINES (f) >> && curX (tty) + len =3D=3D FRAME_COLS (f) >> - && curX (tty) < FRAME_COLS (f) - 1 > > Ah, I see. It got into the else branch for len =3D 1. I think I > misinterpreted what is happening. It didn't even try to insert. Sorry > for that. > >> && len > 0) >> { >> - /* Write glyphs except the first. */ >> - int old_x =3D curX (tty), old_y =3D curY (tty); >> - tty_write_glyphs_1 (f, string + 1, len - 1); >> + if (len > 1) >> + { >> + /* Write glyphs except the first. */ >> + int old_x =3D curX (tty), old_y =3D curY (tty); >> + tty_write_glyphs_1 (f, string + 1, len - 1); >> >> - /* Insert the first glyph, shifting the rest right. */ >> - cmgoto (tty, old_y, old_x); >> - tty_insert_glyphs (f, string, 1); >> + /* Insert the first glyph, shifting the rest right. */ >> + cmgoto (tty, old_y, old_x); >> + tty_insert_glyphs (f, string, 1); >> + } >> + else >> + { >> + struct glyph glyphs[2]; >> + glyphs[1] =3D string[0]; >> + if (!f->current_matrix || f->current_matrix->matrix_h < curY (tty)) >> + return; >> + struct glyph_row *row =3D &f->current_matrix->rows[curY (tty)]; >> + int area =3D 0; >> + int x =3D curX (tty) - 1; >> + while (x > row->used[area]) >> + { >> + x -=3D row->used[area]; >> + if (area++ =3D=3D LAST_AREA) >> + return; >> + } >> + glyphs[0] =3D row->glyphs[area][x]; >> + tty_write_glyphs (f, glyphs, 2); >> + } > > Something like that, yes. Or maybe simply use the glyph at string - 1 when cur_x =3D=3D last column. STRING is always part of a row, and we don't have rows that are only partially filled, or are so narrow that string - 1 isn't valid.
bug-gnu-emacs@HIDDEN
:bug#77233
; Package emacs
.
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[2003:e0:b70b:5b00:b91c:76a7:d1cb:d6d5]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3997f9efe61sm12023970f8f.97.2025.03.24.13.12.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Mar 2025 13:12:20 -0700 (PDT) From: =?utf-8?Q?Gerd_M=C3=B6llmann?= <gerd.moellmann@HIDDEN> To: Pip Cet <pipcet@HIDDEN> Subject: Re: bug#77233: 31.0.50; crash if message starts with a space and then without it In-Reply-To: <878qoudyy6.fsf@HIDDEN> References: <CAJKAhPCBJUoxuK-9HSBfyvstsJE3n4YJUSY-EMav_75DUYcFGQ@HIDDEN> <867c4efuyx.fsf@HIDDEN> <87jz8eectq.fsf@HIDDEN> <86zfhae1e5.fsf@HIDDEN> <878qoudyy6.fsf@HIDDEN> Date: Mon, 24 Mar 2025 21:12:19 +0100 Message-ID: <m2h63i5gt8.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 77233 Cc: n142857@HIDDEN, Eli Zaretskii <eliz@HIDDEN>, 77233 <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: -1.0 (-) Pip Cet <pipcet@HIDDEN> writes: > "Eli Zaretskii" <eliz@HIDDEN> writes: > >>> Date: Mon, 24 Mar 2025 14:14:11 +0000 >>> From: Pip Cet <pipcet@HIDDEN> >>> Cc: Daniel Clemente <n142857@HIDDEN>, 77233 <at> debbugs.gnu.org >>> >>> "Eli Zaretskii" <eliz@HIDDEN> writes: >>> >>> >> #2 0x00005555556730a9 in cmcheckmagic (tty=0x555555a983a0) at cm.c:122 >>> >> 122 emacs_abort (); >>> >> (gdb) list >>> >> 117 if (frame_size_change_delayed (XFRAME (tty->top_frame))) >>> >> 118 return; >>> >> 119 if (curX (tty) == FrameCols (tty)) >>> >> 120 { >>> >> 121 if (!MagicWrap (tty) || curY (tty) >= FrameRows (tty) - 1) >>> >> 122 emacs_abort (); >>> >> 123 if (tty->termscript) >>> >> 124 putc ('\r', tty->termscript); >>> >> 125 putc ('\r', tty->output); >>> >> 126 if (tty->termscript) >>> >> (gdb) p curY(tty) >>> >> $1 = 60 >>> >> (gdb) p FrameRows(tty)-1 >>> >> $2 = 60 >>> >> (gdb) p FrameCols(tty) >>> >> $3 = 100 >>> >> (gdb) >>> > >>> > What is the value of curX(tty) ? And if (as I'd expect) it is 100, >>> > then do you have any idea how come it became 100 for a 2-character >>> > message? >>> >>> It is equal to FrameCols (tty), as established in line 119 (this >>> requires a breakpoint in emacs_abort rather than terminate_due_to_signal). >>> >>> > Can anyone else reproduce this? >>> >>> I can, on GNU/Linux with no special options and in an xterm. >> >> And you can explain how come curX(tty) got such a large value? > > We tried to print a character at (cols-1,rows-1), which left the > remembered cursor position at (cols,rows-1). According to the comments > in term.c, "some terminals" would have scrolled the entire terminal when > we wrote that character, which is the situation detected by > cmcheckmagic. > > The code Gerd pushed looks like this: > > static void > tty_write_glyphs (struct frame *f, struct glyph *string, int len) > { > struct tty_display_info *tty = FRAME_TTY (f); > /* Don't dare write in last column of bottom line, if Auto-Wrap, > since that would scroll the whole frame on some terminals. */ > if (AutoWrap (tty) > && curY (tty) + 1 == FRAME_TOTAL_LINES (f) > && curX (tty) + len == FRAME_COLS (f) > && curX (tty) < FRAME_COLS (f) - 1 > && len > 0) > { > /* Write glyphs except the first. */ > int old_x = curX (tty), old_y = curY (tty); > tty_write_glyphs_1 (f, string + 1, len - 1); > > /* Insert the first glyph, shifting the rest right. */ > cmgoto (tty, old_y, old_x); > tty_insert_glyphs (f, string, 1); > } > else > tty_write_glyphs_1 (f, string, len); > } > > in our case (len == 1), we end up in the "else" branch because curX == > cols - 1, attempting to print a single character in the bottom-right > corner of the terminal. > > The "else" branch simply prints the character and leaves the cursor > position "invalid". > > Note that xterm (the application) doesn't appear to scroll the terminal > in this case, so it's a bit of a historical exercise to fix things on > those terminals that would have, but IIUC, the right way is to retrieve > the character at (cols-2,rows-1), goto (cols-2,rows-1), print the > character that's supposed to end up at (cols-1,rows-1), goto > (cols-2,rows-1) again, then print the retrieved character. > > This is complicated because we'd need to retrieve the character at > (cols-2, rows-1) from the frame matrix if tty_write_glyphs is called > with len == 1 and the cursor is at (cols-1,rows-1). > > Anyway, here's a patch that does this, but it seems too complicated to > be worth it to me: > > diff --git a/src/term.c b/src/term.c > index e15b7a0887e..ccee6c650e3 100644 > --- a/src/term.c > +++ b/src/term.c > @@ -971,16 +971,36 @@ tty_write_glyphs (struct frame *f, struct glyph *string, int len) > if (AutoWrap (tty) > && curY (tty) + 1 == FRAME_TOTAL_LINES (f) > && curX (tty) + len == FRAME_COLS (f) > - && curX (tty) < FRAME_COLS (f) - 1 Ah, I see. It got into the else branch for len = 1. I think I misinterpreted what is happening. It didn't even try to insert. Sorry for that. > && len > 0) > { > - /* Write glyphs except the first. */ > - int old_x = curX (tty), old_y = curY (tty); > - tty_write_glyphs_1 (f, string + 1, len - 1); > + if (len > 1) > + { > + /* Write glyphs except the first. */ > + int old_x = curX (tty), old_y = curY (tty); > + tty_write_glyphs_1 (f, string + 1, len - 1); > > - /* Insert the first glyph, shifting the rest right. */ > - cmgoto (tty, old_y, old_x); > - tty_insert_glyphs (f, string, 1); > + /* Insert the first glyph, shifting the rest right. */ > + cmgoto (tty, old_y, old_x); > + tty_insert_glyphs (f, string, 1); > + } > + else > + { > + struct glyph glyphs[2]; > + glyphs[1] = string[0]; > + if (!f->current_matrix || f->current_matrix->matrix_h < curY (tty)) > + return; > + struct glyph_row *row = &f->current_matrix->rows[curY (tty)]; > + int area = 0; > + int x = curX (tty) - 1; > + while (x > row->used[area]) > + { > + x -= row->used[area]; > + if (area++ == LAST_AREA) > + return; > + } > + glyphs[0] = row->glyphs[area][x]; > + tty_write_glyphs (f, glyphs, 2); > + } Something like that, yes. > } > else > tty_write_glyphs_1 (f, string, len);
bug-gnu-emacs@HIDDEN
:bug#77233
; Package emacs
.
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[2003:e0:b70b:5b00:b91c:76a7:d1cb:d6d5]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-39abe4971b0sm6734897f8f.26.2025.03.24.13.00.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Mar 2025 13:00:23 -0700 (PDT) From: =?utf-8?Q?Gerd_M=C3=B6llmann?= <gerd.moellmann@HIDDEN> To: Pip Cet <pipcet@HIDDEN> Subject: Re: bug#77233: 31.0.50; crash if message starts with a space and then without it In-Reply-To: <8734f2dyh3.fsf@HIDDEN> References: <CAJKAhPCBJUoxuK-9HSBfyvstsJE3n4YJUSY-EMav_75DUYcFGQ@HIDDEN> <867c4efuyx.fsf@HIDDEN> <87jz8eectq.fsf@HIDDEN> <86zfhae1e5.fsf@HIDDEN> <m2pli65jkq.fsf@HIDDEN> <8734f2dyh3.fsf@HIDDEN> Date: Mon, 24 Mar 2025 21:00:22 +0100 Message-ID: <m2ldsu5hd5.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 77233 Cc: n142857@HIDDEN, Eli Zaretskii <eliz@HIDDEN>, 77233 <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: -1.0 (-) Pip Cet <pipcet@HIDDEN> writes: > Gerd M=C3=B6llmann <gerd.moellmann@HIDDEN> writes: > >> Eli Zaretskii <eliz@HIDDEN> writes: >> >>>> > Can anyone else reproduce this? >>>> >>>> I can, on GNU/Linux with no special options and in an xterm. >>> >>> And you can explain how come curX(tty) got such a large value? >>> >>>> Reverting 6fb68f4310d808827b83da053fbc112b316b7757 avoids the crash. >>> >>> Adding Gerd. >> >> I think I can reproduce this, but I can't take a closer look >> for a couple of days or so. >> >> If it's urgent, maybe try to comment out the emacs_abort in cmcheckmagic >> and see if that suffices. > > That avoids the crash here, and things work fine in an xterm, but it > means we printed a character with the cursor at (cols-1,rows-1), which > allegedly would have caused some (old, I assume?) terminals to scroll by > a line, destroying the entire Emacs layout... Well, it's complicated as usual. xterm implements AutoWrap. AutoWrap means that when outputting a character the cursor automatically moves forwawrd. In the last column of a row, the cursor automatically moves to column 0 of the next line. Doing this in the last line of a display scrolls the display. And then there is insert and overwrite mode. AFAIU what you wrote in another mail len =3D=3D 1 which means we wrote nothing in overwrite mode, and then 1 glyph in insert mode. tty_insert_glyphs probably (I don't know), just turns on insert mode, calls tty_write_glyphs, and switches insert mode off again. The cursor doesn't move. The terminal shifts glyphs right that came after the cursor. So the questing is what does inserting a glyph in the last column of the last row do in various terminals. Does this scroll in some case even when there are no glyphs to shift right? > However, xterm and M-x term both handle this situation sensibly, not > scrolling the frame. Is anyone aware of a terminal emulator that > scrolls in this situation? I simply don't know. I can't remember having seen that defined anywhere. But don't forget, this is insert mode, I'm pretty sure it scrolls if not in insert mode.
bug-gnu-emacs@HIDDEN
:bug#77233
; Package emacs
.
Full text available.Received: (at 77233) by debbugs.gnu.org; 24 Mar 2025 19:41:12 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Mar 24 15:41:12 2025 Received: from localhost ([127.0.0.1]:58839 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1twnfb-0007nl-Uv for submit <at> debbugs.gnu.org; Mon, 24 Mar 2025 15:41:12 -0400 Received: from mail-24418.protonmail.ch ([109.224.244.18]:19717) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <pipcet@HIDDEN>) id 1twnfY-0007mK-NX for 77233 <at> debbugs.gnu.org; Mon, 24 Mar 2025 15:41:09 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=protonmail.com; s=protonmail3; t=1742845261; x=1743104461; bh=/4cem/5X8wk5rfvetHtopkHrbPPl6QP6RGiOHIWNMsc=; h=Date:To:From:Cc:Subject:Message-ID:In-Reply-To:References: Feedback-ID:From:To:Cc:Date:Subject:Reply-To:Feedback-ID: Message-ID:BIMI-Selector:List-Unsubscribe:List-Unsubscribe-Post; b=yUBszS7Qi5SUeXaoqPITA/bpjVkWTQuYrp/dSDbZfaqoF3MG1BWqID3sW0x6DwMRA CiXk47sHyXRjUQJoOz6MY9+miqKfI5x7sTgBkq9aMZDz9KZV/Nn/N3cZ1D58WPp97N lgB3XZeTGsB20y7kN+FeBUXCtpyBTu+ieIgVH7I5rK9Gmi6UYgWlgvppWvywo9VUXk 5n/6/K11vyYtY2KkKSwCcWFxCTDnne4kYAyigu8gxBxSSJYBiKWsr0irBq42QLF9gt gfuRpM3h9bMporcrrBo58ymQhYCBgjF3LNa8rYFWcfZjl/EycB23FElA0RnD8cvfGE 2Mc4v8Ds86opw== Date: Mon, 24 Mar 2025 19:40:58 +0000 To: Eli Zaretskii <eliz@HIDDEN> From: Pip Cet <pipcet@HIDDEN> Subject: Re: bug#77233: 31.0.50; crash if message starts with a space and then without it Message-ID: <87tt7icj4m.fsf@HIDDEN> In-Reply-To: <86v7rydyhx.fsf@HIDDEN> References: <CAJKAhPCBJUoxuK-9HSBfyvstsJE3n4YJUSY-EMav_75DUYcFGQ@HIDDEN> <867c4efuyx.fsf@HIDDEN> <87jz8eectq.fsf@HIDDEN> <86zfhae1e5.fsf@HIDDEN> <878qoudyy6.fsf@HIDDEN> <86v7rydyhx.fsf@HIDDEN> Feedback-ID: 112775352:user:proton X-Pm-Message-ID: 5c6fa3d562fdc37c49fdb42d4f751a26b5663865 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: 1.0 (+) X-Debbugs-Envelope-To: 77233 Cc: gerd.moellmann@HIDDEN, n142857@HIDDEN, 77233 <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: -1.0 (-) "Eli Zaretskii" <eliz@HIDDEN> writes: >> Date: Mon, 24 Mar 2025 19:13:55 +0000 >> From: Pip Cet <pipcet@HIDDEN> >> Cc: Gerd M=C3=B6llmann <gerd.moellmann@HIDDEN>, n142857@HIDDEN, 77= 233 <at> debbugs.gnu.org >> >> "Eli Zaretskii" <eliz@HIDDEN> writes: >> >> > And you can explain how come curX(tty) got such a large value? >> >> We tried to print a character at (cols-1,rows-1) > > Why did we do that, when the messages were 2 and 3 characters long? write_row decided to delete (using delete_glyphs) the initial space in the final terminal line, which means the bottom-right corner no longer has the right background color, so it needs to be redrawn (this is in a 158x44 "terminal"): (gdb) b dispnew.c:6109 if nsp !=3D osp 6109=09 if (osp > nsp) (gdb) bt full 1 #0 write_row (f=3D0x555555af45d0, vpos=3D44, updating_menu_p=3Dfalse) at d= ispnew.c:6109 obody =3D 0x7ffff49740d0 nbody =3D 0x7ffff49120d0 op1 =3D 0x7ffff4976360 op2 =3D 0x7ffff4976360 np1 =3D 0x7ffff4914360 nend =3D 0x7ffff4914360 tem =3D 1 osp =3D 1 nsp =3D 0 begmatch =3D 157 endmatch =3D 0 olen =3D 158 nlen =3D 158 current_matrix =3D 0x555555af5b40 desired_matrix =3D 0x555555af5ad0 current_row =3D 0x555555b00ca0 desired_row =3D 0x555555afdf90 must_write_whole_line_p =3D false write_spaces_p =3D true colored_spaces_p =3D true (More stack frames follow...) [...] 6112=09 delete_glyphs (f, osp - nsp); (gdb) p osp - nsp $2 =3D 1 [...] 6147=09=09 cursor_to (f, vpos, nsp + begmatch); (gdb) p nsp + begmatch $3 =3D 157 (gdb) p vpos $4 =3D 44 [...] 6148=09=09 write_glyphs (f, nbody + nsp + begmatch, nlen - tem); (gdb) p nsp + begmatch $5 =3D 157 (gdb) p nlen - tem $6 =3D 1 Then the abort. (I agree with your comments about the patch, of course! Thanks for those. I do think that this is an extremely rare situation and wanted to make sure not to segfault even if the other display code is changed...) Pip
bug-gnu-emacs@HIDDEN
:bug#77233
; Package emacs
.
Full text available.Received: (at 77233) by debbugs.gnu.org; 24 Mar 2025 19:32:45 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Mar 24 15:32:45 2025 Received: from localhost ([127.0.0.1]:58770 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1twnXP-0006Wu-4m for submit <at> debbugs.gnu.org; Mon, 24 Mar 2025 15:32:44 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:39684) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1twnXL-0006VP-Ph for 77233 <at> debbugs.gnu.org; Mon, 24 Mar 2025 15:32:40 -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 1twnXG-0005yx-8w; Mon, 24 Mar 2025 15:32:34 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:References:Subject:In-Reply-To:To:From: Date; bh=1HlOVDCUP6ZauxZgS3LtTsrFADPHZWrT5e8LclQVD9E=; b=kwgJDHwxI7t4kO3iOLq9 7Q9Ny8VMPD83Emu9C+GaFIURSKuDRUHFnSCwmlHegmgxalpmapZeeHsGAmopbsPMujncGZxez7BfV dQE1ZMTyUtyY0V0WIgMUsFLOpLffCPB+uONEGif0Ho+AVvvDTKMRbl+qhP5LkG5Y0AH9E2AtfI5sc EBfBUX4UfG6suiNVFNMk0MRdjkFQQ3pdOT8+NCuKdd9+eNi6ohN904tmQCejN8HNkJLaYRIsQQiTY b8OF3E3cSyJdLSBd1aPlRFrkOfCwL9N5LcVUqrAor55K5gZ2jB40Cn9IcsGr5Vhp5aGx0uXAQzP2/ sjaasFN3LFdQHA==; Date: Mon, 24 Mar 2025 21:32:29 +0200 Message-Id: <86tt7idy2a.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Pip Cet <pipcet@HIDDEN> In-Reply-To: <878qoudyy6.fsf@HIDDEN> (message from Pip Cet on Mon, 24 Mar 2025 19:13:55 +0000) Subject: Re: bug#77233: 31.0.50; crash if message starts with a space and then without it References: <CAJKAhPCBJUoxuK-9HSBfyvstsJE3n4YJUSY-EMav_75DUYcFGQ@HIDDEN> <867c4efuyx.fsf@HIDDEN> <87jz8eectq.fsf@HIDDEN> <86zfhae1e5.fsf@HIDDEN> <878qoudyy6.fsf@HIDDEN> MIME-version: 1.0 Content-type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 77233 Cc: gerd.moellmann@HIDDEN, n142857@HIDDEN, 77233 <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 (---) > Date: Mon, 24 Mar 2025 19:13:55 +0000 > From: Pip Cet <pipcet@HIDDEN> > Cc: Gerd Möllmann <gerd.moellmann@HIDDEN>, n142857@HIDDEN, 77233 <at> debbugs.gnu.org > > Anyway, here's a patch that does this, but it seems too complicated to > be worth it to me: A few minor/cosmetic comments about the patch: > + if (!f->current_matrix || f->current_matrix->matrix_h < curY (tty)) How can a frame not have a current_matrix? That could only mean one thing: the frame was not completely made, in which case its after_make_frame flag should be reset. Such frames should never be considered by this function, i.e. they should be detected at entry and the function should then return without doing anything. > + struct glyph_row *row = &f->current_matrix->rows[curY (tty)]; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Please use the MATRIX_ROW macro here. > + int area = 0; > + int x = curX (tty) - 1; > + while (x > row->used[area]) > + { > + x -= row->used[area]; > + if (area++ == LAST_AREA) > + return; > + } > + glyphs[0] = row->glyphs[area][x]; > + tty_write_glyphs (f, glyphs, 2); > + } I think this is unnecessarily complicated, since frame glyph matrices never have marginal areas, they only have the single TEXT_AREA.
bug-gnu-emacs@HIDDEN
:bug#77233
; Package emacs
.
Full text available.Received: (at 77233) by debbugs.gnu.org; 24 Mar 2025 19:24:23 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Mar 24 15:24:23 2025 Received: from localhost ([127.0.0.1]:58689 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1twnPL-0005Hm-8J for submit <at> debbugs.gnu.org; Mon, 24 Mar 2025 15:24:23 -0400 Received: from mail-10630.protonmail.ch ([79.135.106.30]:15507) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <pipcet@HIDDEN>) id 1twnPH-0005GE-WE for 77233 <at> debbugs.gnu.org; Mon, 24 Mar 2025 15:24:21 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=protonmail.com; s=protonmail3; t=1742844252; x=1743103452; bh=FJJYjvJHiN1mwLkOiuRAHmFiB3x0xq0cxo70abbPnbw=; h=Date:To:From:Cc:Subject:Message-ID:In-Reply-To:References: Feedback-ID:From:To:Cc:Date:Subject:Reply-To:Feedback-ID: Message-ID:BIMI-Selector:List-Unsubscribe:List-Unsubscribe-Post; b=KYOKOLKmwn9tdPRbDBZTmoRacpQvFiqBekqmFg7NTU69XxdqNL2hykAwYzR3ytwVO 3k7H6quJdhp5xaKGgTzhwC3+3fanF9vpUdLbEoOUey5Z6TBuUt1J67dqTu+I3xEJSg N526CaW8rUs3xnfHfhKAz5JuvFBVm/ijJX+qrZCWlpqR2Nb7IAOWwbOgwevMiilqrO xrMu957G5wCJPHt1p0xCQwLhF/aHuRmWyK7fLZwxzvJWl7SpCOaszcod/2YDcMjW5q t5jdX9LiKN7p/mq1EHHwPEXAKjY3NRK11e+cPRtzfkQV1HyunqBQdCP18IuGCHCSeR sgwPdmY8bFWUg== Date: Mon, 24 Mar 2025 19:24:08 +0000 To: =?utf-8?Q?Gerd_M=C3=B6llmann?= <gerd.moellmann@HIDDEN> From: Pip Cet <pipcet@HIDDEN> Subject: Re: bug#77233: 31.0.50; crash if message starts with a space and then without it Message-ID: <8734f2dyh3.fsf@HIDDEN> In-Reply-To: <m2pli65jkq.fsf@HIDDEN> References: <CAJKAhPCBJUoxuK-9HSBfyvstsJE3n4YJUSY-EMav_75DUYcFGQ@HIDDEN> <867c4efuyx.fsf@HIDDEN> <87jz8eectq.fsf@HIDDEN> <86zfhae1e5.fsf@HIDDEN> <m2pli65jkq.fsf@HIDDEN> Feedback-ID: 112775352:user:proton X-Pm-Message-ID: af116d53f7f879130c6f9375bfe9173d19f593e6 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 77233 Cc: n142857@HIDDEN, Eli Zaretskii <eliz@HIDDEN>, 77233 <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: -1.0 (-) Gerd M=C3=B6llmann <gerd.moellmann@HIDDEN> writes: > Eli Zaretskii <eliz@HIDDEN> writes: > >>> > Can anyone else reproduce this? >>> >>> I can, on GNU/Linux with no special options and in an xterm. >> >> And you can explain how come curX(tty) got such a large value? >> >>> Reverting 6fb68f4310d808827b83da053fbc112b316b7757 avoids the crash. >> >> Adding Gerd. > > I think I can reproduce this, but I can't take a closer look > for a couple of days or so. > > If it's urgent, maybe try to comment out the emacs_abort in cmcheckmagic > and see if that suffices. That avoids the crash here, and things work fine in an xterm, but it means we printed a character with the cursor at (cols-1,rows-1), which allegedly would have caused some (old, I assume?) terminals to scroll by a line, destroying the entire Emacs layout... However, xterm and M-x term both handle this situation sensibly, not scrolling the frame. Is anyone aware of a terminal emulator that scrolls in this situation? Pip
bug-gnu-emacs@HIDDEN
:bug#77233
; Package emacs
.
Full text available.Received: (at 77233) by debbugs.gnu.org; 24 Mar 2025 19:23:25 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Mar 24 15:23:25 2025 Received: from localhost ([127.0.0.1]:58684 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1twnON-0005AS-6E for submit <at> debbugs.gnu.org; Mon, 24 Mar 2025 15:23:25 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:48628) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1twnOH-000590-9t for 77233 <at> debbugs.gnu.org; Mon, 24 Mar 2025 15:23:20 -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 1twnOB-0004c3-Cn; Mon, 24 Mar 2025 15:23:11 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:References:Subject:In-Reply-To:To:From: Date; bh=lQKaYrL4BfrcIUBQldeYldBX482MEbcb6J7hIKKRzmU=; b=E8NQpk/2xZICLscZ8BoF ANSQLuwagGHjJ9QvV4jvHIDhr1aHJSuf6t/fu0sToVs+qK2/pJOOwF0jpCFrHPClq1Y43cNaqL8mp mdtDE1oRFBfj/heuEvFXmR4DivdgjRXvRmgueK9YSAENBGGU8iD9+LZkfO76Z6x8bUsxLp9bLp13P y4dvp25Mlix/OxgwcrZsAGM3nqTmI2yZamc5cxulcgQIc6erTJAMEpgWkP8RuXQ9ms5/Bj//sL1AE Ia/dy4cvZyHyURMgXyQW2/Ken2XI6wonM/HnSz25MDXRUeLNmSrizy1ZyS7+L111pbD4HHce5xPZK hO38qWWxigtBJg==; Date: Mon, 24 Mar 2025 21:23:06 +0200 Message-Id: <86v7rydyhx.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Pip Cet <pipcet@HIDDEN> In-Reply-To: <878qoudyy6.fsf@HIDDEN> (message from Pip Cet on Mon, 24 Mar 2025 19:13:55 +0000) Subject: Re: bug#77233: 31.0.50; crash if message starts with a space and then without it References: <CAJKAhPCBJUoxuK-9HSBfyvstsJE3n4YJUSY-EMav_75DUYcFGQ@HIDDEN> <867c4efuyx.fsf@HIDDEN> <87jz8eectq.fsf@HIDDEN> <86zfhae1e5.fsf@HIDDEN> <878qoudyy6.fsf@HIDDEN> MIME-version: 1.0 Content-type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 77233 Cc: gerd.moellmann@HIDDEN, n142857@HIDDEN, 77233 <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 (---) > Date: Mon, 24 Mar 2025 19:13:55 +0000 > From: Pip Cet <pipcet@HIDDEN> > Cc: Gerd Möllmann <gerd.moellmann@HIDDEN>, n142857@HIDDEN, 77233 <at> debbugs.gnu.org > > "Eli Zaretskii" <eliz@HIDDEN> writes: > > > And you can explain how come curX(tty) got such a large value? > > We tried to print a character at (cols-1,rows-1) Why did we do that, when the messages were 2 and 3 characters long?
bug-gnu-emacs@HIDDEN
:bug#77233
; Package emacs
.
Full text available.Received: (at 77233) by debbugs.gnu.org; 24 Mar 2025 19:14:12 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Mar 24 15:14:11 2025 Received: from localhost ([127.0.0.1]:58608 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1twnFQ-0003qc-Vw for submit <at> debbugs.gnu.org; Mon, 24 Mar 2025 15:14:11 -0400 Received: from mail-4322.protonmail.ch ([185.70.43.22]:28545) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <pipcet@HIDDEN>) id 1twnFN-0003oV-OH for 77233 <at> debbugs.gnu.org; Mon, 24 Mar 2025 15:14:07 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=protonmail.com; s=protonmail3; t=1742843639; x=1743102839; bh=41bgqlNXDwEJohPH1eq9U4CV3QU2RgYLg+OD/cM9yJM=; h=Date:To:From:Cc:Subject:Message-ID:In-Reply-To:References: Feedback-ID:From:To:Cc:Date:Subject:Reply-To:Feedback-ID: Message-ID:BIMI-Selector:List-Unsubscribe:List-Unsubscribe-Post; b=LzTfFQt6L53fEB7fyMPe5UNQ0+dSZBjGwd4z4nhoT+45p9jWUjQcihuvNX+f0XwYK txxhNpOfxS93z2LTYUM9ue9dY5AOPXb48cloEwTrG8wmzakgo9VKtgRTD4/8Z2tUW3 TYS9F7827eBZ3wrcKREnII2/5U4A2+eoPZyToLrU78jylobX7jeVIbKKa1/VHPOOiF g1gJolTotfxCHRPOgrCMaySafTJwLF8U4e7tSX+Qgc2Tv6CziDxnzZummEHoe404kQ I8/xtDeM2jzmEKCzukImA9GNMlmR46qyDScM7za6KeRxholCgPdM9oD1vsCYHqEYUl 8h6mTIfq3ioOA== Date: Mon, 24 Mar 2025 19:13:55 +0000 To: Eli Zaretskii <eliz@HIDDEN> From: Pip Cet <pipcet@HIDDEN> Subject: Re: bug#77233: 31.0.50; crash if message starts with a space and then without it Message-ID: <878qoudyy6.fsf@HIDDEN> In-Reply-To: <86zfhae1e5.fsf@HIDDEN> References: <CAJKAhPCBJUoxuK-9HSBfyvstsJE3n4YJUSY-EMav_75DUYcFGQ@HIDDEN> <867c4efuyx.fsf@HIDDEN> <87jz8eectq.fsf@HIDDEN> <86zfhae1e5.fsf@HIDDEN> Feedback-ID: 112775352:user:proton X-Pm-Message-ID: 6d6f3a49282899993dffd06921ddd968c35b08be MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 77233 Cc: =?utf-8?Q?Gerd_M=C3=B6llmann?= <gerd.moellmann@HIDDEN>, n142857@HIDDEN, 77233 <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: -1.0 (-) "Eli Zaretskii" <eliz@HIDDEN> writes: >> Date: Mon, 24 Mar 2025 14:14:11 +0000 >> From: Pip Cet <pipcet@HIDDEN> >> Cc: Daniel Clemente <n142857@HIDDEN>, 77233 <at> debbugs.gnu.org >> >> "Eli Zaretskii" <eliz@HIDDEN> writes: >> >> >> #2 0x00005555556730a9 in cmcheckmagic (tty=3D0x555555a983a0) at cm.c= :122 >> >> 122 emacs_abort (); >> >> (gdb) list >> >> 117 if (frame_size_change_delayed (XFRAME (tty->top_frame))) >> >> 118 return; >> >> 119 if (curX (tty) =3D=3D FrameCols (tty)) >> >> 120 { >> >> 121 if (!MagicWrap (tty) || curY (tty) >=3D FrameRows (tty) = - 1) >> >> 122 emacs_abort (); >> >> 123 if (tty->termscript) >> >> 124 putc ('\r', tty->termscript); >> >> 125 putc ('\r', tty->output); >> >> 126 if (tty->termscript) >> >> (gdb) p curY(tty) >> >> $1 =3D 60 >> >> (gdb) p FrameRows(tty)-1 >> >> $2 =3D 60 >> >> (gdb) p FrameCols(tty) >> >> $3 =3D 100 >> >> (gdb) >> > >> > What is the value of curX(tty) ? And if (as I'd expect) it is 100, >> > then do you have any idea how come it became 100 for a 2-character >> > message? >> >> It is equal to FrameCols (tty), as established in line 119 (this >> requires a breakpoint in emacs_abort rather than terminate_due_to_signal= ). >> >> > Can anyone else reproduce this? >> >> I can, on GNU/Linux with no special options and in an xterm. > > And you can explain how come curX(tty) got such a large value? We tried to print a character at (cols-1,rows-1), which left the remembered cursor position at (cols,rows-1). According to the comments in term.c, "some terminals" would have scrolled the entire terminal when we wrote that character, which is the situation detected by cmcheckmagic. The code Gerd pushed looks like this: static void tty_write_glyphs (struct frame *f, struct glyph *string, int len) { struct tty_display_info *tty =3D FRAME_TTY (f); /* Don't dare write in last column of bottom line, if Auto-Wrap, since that would scroll the whole frame on some terminals. */ if (AutoWrap (tty) && curY (tty) + 1 =3D=3D FRAME_TOTAL_LINES (f) && curX (tty) + len =3D=3D FRAME_COLS (f) && curX (tty) < FRAME_COLS (f) - 1 && len > 0) { /* Write glyphs except the first. */ int old_x =3D curX (tty), old_y =3D curY (tty); tty_write_glyphs_1 (f, string + 1, len - 1); /* Insert the first glyph, shifting the rest right. */ cmgoto (tty, old_y, old_x); tty_insert_glyphs (f, string, 1); } else tty_write_glyphs_1 (f, string, len); } in our case (len =3D=3D 1), we end up in the "else" branch because curX =3D= =3D cols - 1, attempting to print a single character in the bottom-right corner of the terminal. The "else" branch simply prints the character and leaves the cursor position "invalid". Note that xterm (the application) doesn't appear to scroll the terminal in this case, so it's a bit of a historical exercise to fix things on those terminals that would have, but IIUC, the right way is to retrieve the character at (cols-2,rows-1), goto (cols-2,rows-1), print the character that's supposed to end up at (cols-1,rows-1), goto (cols-2,rows-1) again, then print the retrieved character. This is complicated because we'd need to retrieve the character at (cols-2, rows-1) from the frame matrix if tty_write_glyphs is called with len =3D=3D 1 and the cursor is at (cols-1,rows-1). Anyway, here's a patch that does this, but it seems too complicated to be worth it to me: diff --git a/src/term.c b/src/term.c index e15b7a0887e..ccee6c650e3 100644 --- a/src/term.c +++ b/src/term.c @@ -971,16 +971,36 @@ tty_write_glyphs (struct frame *f, struct glyph *stri= ng, int len) if (AutoWrap (tty) && curY (tty) + 1 =3D=3D FRAME_TOTAL_LINES (f) && curX (tty) + len =3D=3D FRAME_COLS (f) - && curX (tty) < FRAME_COLS (f) - 1 && len > 0) { - /* Write glyphs except the first. */ - int old_x =3D curX (tty), old_y =3D curY (tty); - tty_write_glyphs_1 (f, string + 1, len - 1); + if (len > 1) +=09{ +=09 /* Write glyphs except the first. */ +=09 int old_x =3D curX (tty), old_y =3D curY (tty); +=09 tty_write_glyphs_1 (f, string + 1, len - 1); =20 - /* Insert the first glyph, shifting the rest right. */ - cmgoto (tty, old_y, old_x); - tty_insert_glyphs (f, string, 1); +=09 /* Insert the first glyph, shifting the rest right. */ +=09 cmgoto (tty, old_y, old_x); +=09 tty_insert_glyphs (f, string, 1); +=09} + else +=09{ +=09 struct glyph glyphs[2]; +=09 glyphs[1] =3D string[0]; +=09 if (!f->current_matrix || f->current_matrix->matrix_h < curY (tty)) +=09 return; +=09 struct glyph_row *row =3D &f->current_matrix->rows[curY (tty)]; +=09 int area =3D 0; +=09 int x =3D curX (tty) - 1; +=09 while (x > row->used[area]) +=09 { +=09 x -=3D row->used[area]; +=09 if (area++ =3D=3D LAST_AREA) +=09=09return; +=09 } +=09 glyphs[0] =3D row->glyphs[area][x]; +=09 tty_write_glyphs (f, glyphs, 2); +=09} } else tty_write_glyphs_1 (f, string, len);
bug-gnu-emacs@HIDDEN
:bug#77233
; Package emacs
.
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[2003:e0:b70b:5b00:b91c:76a7:d1cb:d6d5]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-39ab907da9asm9137121f8f.90.2025.03.24.12.12.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Mar 2025 12:12:38 -0700 (PDT) From: =?utf-8?Q?Gerd_M=C3=B6llmann?= <gerd.moellmann@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#77233: 31.0.50; crash if message starts with a space and then without it In-Reply-To: <86zfhae1e5.fsf@HIDDEN> References: <CAJKAhPCBJUoxuK-9HSBfyvstsJE3n4YJUSY-EMav_75DUYcFGQ@HIDDEN> <867c4efuyx.fsf@HIDDEN> <87jz8eectq.fsf@HIDDEN> <86zfhae1e5.fsf@HIDDEN> Date: Mon, 24 Mar 2025 20:12:37 +0100 Message-ID: <m2pli65jkq.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 77233 Cc: n142857@HIDDEN, Pip Cet <pipcet@HIDDEN>, 77233 <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: -1.0 (-) Eli Zaretskii <eliz@HIDDEN> writes: >> > Can anyone else reproduce this? >> >> I can, on GNU/Linux with no special options and in an xterm. > > And you can explain how come curX(tty) got such a large value? > >> Reverting 6fb68f4310d808827b83da053fbc112b316b7757 avoids the crash. > > Adding Gerd. I think I can reproduce this, but I can't take a closer look for a couple of days or so. If it's urgent, maybe try to comment out the emacs_abort in cmcheckmagic and see if that suffices.
bug-gnu-emacs@HIDDEN
:bug#77233
; Package emacs
.
Full text available.Received: (at 77233) by debbugs.gnu.org; 24 Mar 2025 18:20:47 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Mar 24 14:20:47 2025 Received: from localhost ([127.0.0.1]:58149 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1twmPn-0004nk-69 for submit <at> debbugs.gnu.org; Mon, 24 Mar 2025 14:20:47 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59806) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1twmPk-0004m9-Fh for 77233 <at> debbugs.gnu.org; Mon, 24 Mar 2025 14:20:45 -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 1twmPe-0005KK-S3; Mon, 24 Mar 2025 14:20:38 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:References:Subject:In-Reply-To:To:From: Date; bh=Cq0dCBR4kWTBOluoR+eKStlilHKTTYIunrYo4OltuWo=; b=p41Q1VctbpK6aXkMB6sq er+91TxBALguuT9awkwfpQFDXgwJi5YW3SxMWhYQWafLk4m6xO140c9LXXeKUjkBVIUOWvlAtPU8F OU4BdBG3lOZ/GbJUPI5luVLQ8J24LIWENntAr8s+AVyXDrNZ4QTnWWG4VaLZUSqnF1sWv8HXZCjFC 39oN2ZOHLV7//kd9gOed9zlXImJsGgo3thJlxa9Yx1D9pCWelDNSm2UZCDixVAThrXOGufBYVYTom WOiW+Xd+qyAz+0FXSIK1yGN2hkDNtKvYQMq80to9rk685XlcuVbxyIdFoNXoFy1FPQ73f7SnA4B5k gu7UvqT7JcJ4OA==; Date: Mon, 24 Mar 2025 20:20:34 +0200 Message-Id: <86zfhae1e5.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Pip Cet <pipcet@HIDDEN>, =?utf-8?Q?Gerd_M=C3=B6llmann?= <gerd.moellmann@HIDDEN> In-Reply-To: <87jz8eectq.fsf@HIDDEN> (message from Pip Cet on Mon, 24 Mar 2025 14:14:11 +0000) Subject: Re: bug#77233: 31.0.50; crash if message starts with a space and then without it References: <CAJKAhPCBJUoxuK-9HSBfyvstsJE3n4YJUSY-EMav_75DUYcFGQ@HIDDEN> <867c4efuyx.fsf@HIDDEN> <87jz8eectq.fsf@HIDDEN> MIME-version: 1.0 Content-type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 77233 Cc: n142857@HIDDEN, 77233 <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 (---) > Date: Mon, 24 Mar 2025 14:14:11 +0000 > From: Pip Cet <pipcet@HIDDEN> > Cc: Daniel Clemente <n142857@HIDDEN>, 77233 <at> debbugs.gnu.org > > "Eli Zaretskii" <eliz@HIDDEN> writes: > > >> #2 0x00005555556730a9 in cmcheckmagic (tty=0x555555a983a0) at cm.c:122 > >> 122 emacs_abort (); > >> (gdb) list > >> 117 if (frame_size_change_delayed (XFRAME (tty->top_frame))) > >> 118 return; > >> 119 if (curX (tty) == FrameCols (tty)) > >> 120 { > >> 121 if (!MagicWrap (tty) || curY (tty) >= FrameRows (tty) - 1) > >> 122 emacs_abort (); > >> 123 if (tty->termscript) > >> 124 putc ('\r', tty->termscript); > >> 125 putc ('\r', tty->output); > >> 126 if (tty->termscript) > >> (gdb) p curY(tty) > >> $1 = 60 > >> (gdb) p FrameRows(tty)-1 > >> $2 = 60 > >> (gdb) p FrameCols(tty) > >> $3 = 100 > >> (gdb) > > > > What is the value of curX(tty) ? And if (as I'd expect) it is 100, > > then do you have any idea how come it became 100 for a 2-character > > message? > > It is equal to FrameCols (tty), as established in line 119 (this > requires a breakpoint in emacs_abort rather than terminate_due_to_signal). > > > Can anyone else reproduce this? > > I can, on GNU/Linux with no special options and in an xterm. And you can explain how come curX(tty) got such a large value? > Reverting 6fb68f4310d808827b83da053fbc112b316b7757 avoids the crash. Adding Gerd.
bug-gnu-emacs@HIDDEN
:bug#77233
; Package emacs
.
Full text available.Received: (at 77233) by debbugs.gnu.org; 24 Mar 2025 14:14:26 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Mar 24 10:14:25 2025 Received: from localhost ([127.0.0.1]:57265 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1twiZN-0004WX-Gq for submit <at> debbugs.gnu.org; Mon, 24 Mar 2025 10:14:25 -0400 Received: from mail-10631.protonmail.ch ([79.135.106.31]:54669) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <pipcet@HIDDEN>) id 1twiZJ-0004WC-R7 for 77233 <at> debbugs.gnu.org; Mon, 24 Mar 2025 10:14:23 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=protonmail.com; s=protonmail3; t=1742825654; x=1743084854; bh=HSzFyPpQOQ956qK0WT2AIbAsZ90DGmPFTOhALC5weUI=; h=Date:To:From:Cc:Subject:Message-ID:In-Reply-To:References: Feedback-ID:From:To:Cc:Date:Subject:Reply-To:Feedback-ID: Message-ID:BIMI-Selector:List-Unsubscribe:List-Unsubscribe-Post; b=cyIl59N70rUvwtWlPN4FzR9LleedBI/fSfOhgi1o/q5cmWVlu2NGhiBogB7PKRi4U cxdC57aK//zQjE/DweDy1xvdmeXhQ3hy6VHidyvCustipn6gGEzUZC2naUp1pL6x2q Vy/xqjBRbFj+KLkPoUP/s7ivR250j0ROrTlwow7XiUuGvCFFD1UXa0rbVWhdI7wF0Z bvyfFHXDuYHwa2QUTJBD2Q0jOhN2IPiR3Sn7oUK9FEau5O8wezHFV5h2d+FSO9sfbX oK72E88GSKsy9pgiMPJbXIce1pMPcmftm47zfnt37rWcTDhPXOp/Pi+Eo/N8mwe7T4 ywFETwk+epWYw== Date: Mon, 24 Mar 2025 14:14:11 +0000 To: Eli Zaretskii <eliz@HIDDEN> From: Pip Cet <pipcet@HIDDEN> Subject: Re: bug#77233: 31.0.50; crash if message starts with a space and then without it Message-ID: <87jz8eectq.fsf@HIDDEN> In-Reply-To: <867c4efuyx.fsf@HIDDEN> References: <CAJKAhPCBJUoxuK-9HSBfyvstsJE3n4YJUSY-EMav_75DUYcFGQ@HIDDEN> <867c4efuyx.fsf@HIDDEN> Feedback-ID: 112775352:user:proton X-Pm-Message-ID: 37d03141ca450a58c6e45bb0a2aafad354d530dc MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 77233 Cc: Daniel Clemente <n142857@HIDDEN>, 77233 <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: -1.0 (-) "Eli Zaretskii" <eliz@HIDDEN> writes: >> #2 0x00005555556730a9 in cmcheckmagic (tty=3D0x555555a983a0) at cm.c:12= 2 >> 122 emacs_abort (); >> (gdb) list >> 117 if (frame_size_change_delayed (XFRAME (tty->top_frame))) >> 118 return; >> 119 if (curX (tty) =3D=3D FrameCols (tty)) >> 120 { >> 121 if (!MagicWrap (tty) || curY (tty) >=3D FrameRows (tty) - 1= ) >> 122 emacs_abort (); >> 123 if (tty->termscript) >> 124 putc ('\r', tty->termscript); >> 125 putc ('\r', tty->output); >> 126 if (tty->termscript) >> (gdb) p curY(tty) >> $1 =3D 60 >> (gdb) p FrameRows(tty)-1 >> $2 =3D 60 >> (gdb) p FrameCols(tty) >> $3 =3D 100 >> (gdb) > > What is the value of curX(tty) ? And if (as I'd expect) it is 100, > then do you have any idea how come it became 100 for a 2-character > message? It is equal to FrameCols (tty), as established in line 119 (this requires a breakpoint in emacs_abort rather than terminate_due_to_signal). > Can anyone else reproduce this? I can, on GNU/Linux with no special options and in an xterm. Reverting 6fb68f4310d808827b83da053fbc112b316b7757 avoids the crash. Pip
bug-gnu-emacs@HIDDEN
:bug#77233
; Package emacs
.
Full text available.Received: (at 77233) by debbugs.gnu.org; 24 Mar 2025 14:12:27 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Mar 24 10:12:27 2025 Received: from localhost ([127.0.0.1]:57260 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1twiXT-0004Sq-Dz for submit <at> debbugs.gnu.org; Mon, 24 Mar 2025 10:12:27 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:49494) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1twiXP-0004SV-3y for 77233 <at> debbugs.gnu.org; Mon, 24 Mar 2025 10:12:25 -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 1twiXJ-00061D-BK; Mon, 24 Mar 2025 10:12:17 -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=dxrAwlxNrX2dnoKb72kFYcbfA7wQCauJnclLu/Yh7dA=; b=YexPSYJZR4/w xJ69gxXIZUSkNRvOmDLqE654aRqYcTMtMmT9D6NZIyckUykE2eS5fGQUk5MM7c2rvgTvsWYHxMfUm qDZF+P/eiB9b4yLNwIe3wGS2v+bCmIPU1Fm5NLc0GYaDldboXX31Gtacz+Mg45PFy+urbJcYBLEuc iyocT6/oN7FS27o1CS4eAoop/q4qs5/Nha8cI2/UiHeN1gXTKABWxMwsetM0TQ6tKt4/gA6tvqyJs E6Ybl9zfqZeejp9vtI/3fOLCOIZH4V5EdXCh1MqfSotlhcemnDLonqcentT6hyKT1hcke0jBKBv8Q 1Jb02uzudCzrxI/PwqQn6w==; Date: Mon, 24 Mar 2025 16:12:07 +0200 Message-Id: <861pumfrgo.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: n142857@HIDDEN In-Reply-To: <867c4efuyx.fsf@HIDDEN> (message from Eli Zaretskii on Mon, 24 Mar 2025 14:56:22 +0200) Subject: Re: bug#77233: 31.0.50; crash if message starts with a space and then without it References: <CAJKAhPCBJUoxuK-9HSBfyvstsJE3n4YJUSY-EMav_75DUYcFGQ@HIDDEN> <867c4efuyx.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 77233 Cc: 77233 <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 (---) > Cc: 77233 <at> debbugs.gnu.org > Date: Mon, 24 Mar 2025 14:56:22 +0200 > From: Eli Zaretskii <eliz@HIDDEN> > > What is the value of curX(tty) ? And if (as I'd expect) it is 100, > then do you have any idea how come it became 100 for a 2-character > message? > > Can anyone else reproduce this? Does the crash depend on the terminal emulator you use?
bug-gnu-emacs@HIDDEN
:bug#77233
; Package emacs
.
Full text available.Received: (at 77233) by debbugs.gnu.org; 24 Mar 2025 12:56:40 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Mar 24 08:56:40 2025 Received: from localhost ([127.0.0.1]:54692 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1twhM8-0008WH-AM for submit <at> debbugs.gnu.org; Mon, 24 Mar 2025 08:56:40 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:37208) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1twhM2-0008Vu-Jy for 77233 <at> debbugs.gnu.org; Mon, 24 Mar 2025 08:56:35 -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 1twhLw-0003cs-TN; Mon, 24 Mar 2025 08:56:28 -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=7FMBAjsIaASDa3lxKOVDr1uZDyQK0xKQYk51sH77oVY=; b=ezG1AIRw6/hp aJBBO6HRd6Uusp0e0sRuHNgi0Zl71EpaX+wmV+yYcctYpD6yN1EcXX5Akjt0HVFZJjY0Dwt9TTzk1 c7tamnC5at41MhnRYB5IEV5Dih3PJvk5Y8KLx+aXGLKDYUeojOZ9mcfKH+Zpr5V1aNOw1PlwoiIWz UA81Rlx3tahPXAfA0peYGia6TVuBrLB8l0VzqztiN7RW8aaONxB1lrOuLwKbQKZmnovsS17DICnF1 Jxk2ZeGrogdraygx+tE6buEvvi3u9aepBiwbwnVO9NRuiY6bAEmm8d6s9/XLZL7i7/GNyUwRT5jpN 6n8/726WX+ky6gGn/7cl8Q==; Date: Mon, 24 Mar 2025 14:56:22 +0200 Message-Id: <867c4efuyx.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Daniel Clemente <n142857@HIDDEN> In-Reply-To: <CAJKAhPCBJUoxuK-9HSBfyvstsJE3n4YJUSY-EMav_75DUYcFGQ@HIDDEN> (message from Daniel Clemente on Mon, 24 Mar 2025 09:42:52 +0000) Subject: Re: bug#77233: 31.0.50; crash if message starts with a space and then without it References: <CAJKAhPCBJUoxuK-9HSBfyvstsJE3n4YJUSY-EMav_75DUYcFGQ@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 77233 Cc: 77233 <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: Mon, 24 Mar 2025 09:42:52 +0000 > > Believe it or not, this crashes each time. Open emacs -Q (with or > without daemon) in a TTY, and evaluate the first part and then the progn: > > (modify-frame-parameters (selected-frame) '( > ;; background-color needs to be defined, to crash. The precise > color doesn't matter > (background-color . "#111") > ;; Doesn't affect the crash: > ;; (foreground-color . "#c0c0c0") > )) > (progn > (message " AB") > (message "AB") > ) Thanks. I cannot reproduce the crash. My build is a bit different (for example, not --without-x), but otherwise I have no clue. > #2 0x00005555556730a9 in cmcheckmagic (tty=0x555555a983a0) at cm.c:122 > 122 emacs_abort (); > (gdb) list > 117 if (frame_size_change_delayed (XFRAME (tty->top_frame))) > 118 return; > 119 if (curX (tty) == FrameCols (tty)) > 120 { > 121 if (!MagicWrap (tty) || curY (tty) >= FrameRows (tty) - 1) > 122 emacs_abort (); > 123 if (tty->termscript) > 124 putc ('\r', tty->termscript); > 125 putc ('\r', tty->output); > 126 if (tty->termscript) > (gdb) p curY(tty) > $1 = 60 > (gdb) p FrameRows(tty)-1 > $2 = 60 > (gdb) p FrameCols(tty) > $3 = 100 > (gdb) What is the value of curX(tty) ? And if (as I'd expect) it is 100, then do you have any idea how come it became 100 for a 2-character message? Can anyone else reproduce this?
bug-gnu-emacs@HIDDEN
:bug#77233
; Package emacs
.
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The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Believe it or not, this crashes each time. Open emacs -Q (with or without daemon) in a TTY, and evaluate the first part and then the progn: (modify-frame-parameters (selected-frame) '( ;; background-color needs to be defined, to crash. The precise color doesn't matter (background-color . "#111") ;; Doesn't affect the crash: ;; (foreground [...] Content analysis details: (1.2 points, 10.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (n142857[at]gmail.com) 0.2 FREEMAIL_ENVFROM_END_DIGIT Envelope-from freemail username ends in digit (n142857[at]gmail.com) -0.0 SPF_HELO_PASS SPF: HELO matches SPF record 1.0 SPF_SOFTFAIL SPF: sender does not match SPF record (softfail) -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2001:470:142:0:0:0:0:17 listed in] [list.dnswl.org] X-Debbugs-Envelope-To: submit 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: 0.2 (/) Believe it or not, this crashes each time. Open emacs -Q (with or without daemon) in a TTY, and evaluate the first part and then the progn: (modify-frame-parameters (selected-frame) '( ;; background-color needs to be defined, to crash. The precise color doesn't matter (background-color . "#111") ;; Doesn't affect the crash: ;; (foreground-color . "#c0c0c0") )) (progn (message " AB") (message "AB") ) Conditions for this crash: - the same message must have appeared with an initial space and without an initial space. Use " ABC" and "AB" and it won't crash, because ABC !=3D AB. But use " ABC" and "ABC" and it crashes - it must be in this order: first with space, then without - both messages must be contained in a progn or in a let/while/defun=E2=80= =A6 If you evaluate each message separately, it works - the background-color needs to be set - there must only be 1 space in the beginning. With 2 spaces or 1 tab or 1 dot it works. Space in the end also works This is with latest Emacs compiled right now. It seems due to recent changes since I didn't see it in my previous version (~2 weeks old), but I'm not sure and I didn't have time to do bisecting. Line numbers in my backtrace might be off by 1 since I added some lines with comments (but it also crashes without my edits). Discovered by running zone-pgm-stress, which triggers the condition. Crash: Breakpoint 1, terminate_due_to_signal (sig=3D6, backtrace_limit=3D40) at em= acs.c:425 425 signal (sig, SIG_DFL); (gdb) bt #0 terminate_due_to_signal (sig=3D6, backtrace_limit=3D40) at emacs.c:425 #1 0x00005555556cb0b7 in emacs_abort () at sysdep.c:2378 #2 0x00005555556730a9 in cmcheckmagic (tty=3D0x555555a983a0) at cm.c:122 #3 0x0000555555677abd in tty_write_glyphs_1 (f=3D0x555555aa46e0, string=3D0x7ffff6ea3670, len=3D1) at term.c:816 #4 0x0000555555678430 in tty_write_glyphs (f=3D0x555555aa46e0, string=3D0x7ffff6ea3638, len=3D1) at term.c:992 #5 0x000055555568358b in write_glyphs (f=3D0x555555aa46e0, string=3D0x7ffff6ea3638, len=3D1) at terminal.c:182 #6 0x0000555555593388 in write_row (f=3D0x555555aa46e0, vpos=3D60, updating_menu_p=3Dfalse) at dispnew.c:6159 #7 0x00005555555912d1 in write_matrix (f=3D0x555555aa46e0, inhibit_id_p=3Dtrue, updating_menu_p=3Dfalse) at dispnew.c:5746 #8 0x000055555558d69b in combine_updates_for_frame (f=3D0x555555aa46e0, inhibit_scrolling=3Dtrue) at dispnew.c:4053 #9 0x00005555555cebfc in echo_area_display (update_frame_p=3Dtrue) at xdisp.c:13562 #10 0x00005555555ca99e in message3_nolog (m=3DXIL(0x555555da1a04)) at xdisp.c:12460 #11 0x00005555555ca64c in message3 (m=3DXIL(0x555555da1a04)) at xdisp.c:123= 90 #12 0x000055555576f5c1 in Fmessage (nargs=3D1, args=3D0x7fffffffbb00) at editfns.c:3127 [=E2=80=A6] (gdb) frame 2 #2 0x00005555556730a9 in cmcheckmagic (tty=3D0x555555a983a0) at cm.c:122 122 emacs_abort (); (gdb) list 117 if (frame_size_change_delayed (XFRAME (tty->top_frame))) 118 return; 119 if (curX (tty) =3D=3D FrameCols (tty)) 120 { 121 if (!MagicWrap (tty) || curY (tty) >=3D FrameRows (tty) - 1) 122 emacs_abort (); 123 if (tty->termscript) 124 putc ('\r', tty->termscript); 125 putc ('\r', tty->output); 126 if (tty->termscript) (gdb) p curY(tty) $1 =3D 60 (gdb) p FrameRows(tty)-1 $2 =3D 60 (gdb) p FrameCols(tty) $3 =3D 100 (gdb) In GNU Emacs 31.0.50 (build 28, x86_64-pc-linux-gnu) of 2025-03-24 built on sonn Repository revision: 0cfe700e336da3cc5a2a766840d375921dcd5ee9 Repository branch: master System Description: Devuan GNU/Linux 5 (daedalus) Configured using: 'configure --prefix=3D/opt/dc/emacs-dev/ --with-tiff=3Dno --without-tiff --without-libsystemd --without-dbus --with-mailutils --without-modules --with-native-compilation=3Dno --with-x-toolkit=3Dno --without-imagemagick --without-xft --without-harfbuzz --without-freetype --without-libotf --without-xwidgets --without-xpm --without-jpeg --without-gif --without-png --without-webp --without-rsvg --without-cairo --without-x --without-sound --enable-checking=3Dyes,glyphs --enable-profiling CC=3Dgcc 'CFLAGS=3D-g3 -O0 '' Configured features: GMP GNUTLS LCMS2 LIBSELINUX LIBXML2 NOTIFY INOTIFY PDUMPER SECCOMP SQLITE3 THREADS XIM ZLIB Important settings: value of $LANG: en_US.UTF-8 value of $XMODIFIERS: @im=3DSCIM locale-coding-system: utf-8-unix Major mode: Lisp Interaction Minor modes in effect: server-mode: t tooltip-mode: t global-eldoc-mode: t eldoc-mode: t show-paren-mode: t electric-indent-mode: t menu-bar-mode: t file-name-shadow-mode: t global-font-lock-mode: t font-lock-mode: t blink-cursor-mode: t minibuffer-regexp-mode: t line-number-mode: t indent-tabs-mode: t transient-mark-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t Load-path shadows: /w/emacs-dev/lisp/pulse hides /w/emacs-dev/lisp/cedet/pulse Features: (shadow sort hashcash pcase cl-macs regexp-opt mail-extr emacsbug message mailcap yank-media puny dired dnd dired-loaddefs rfc822 mml mml-sec password-cache epa derived epg rfc6068 epg-config gnus-util text-property-search time-date subr-x mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader cl-loaddefs cl-lib sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils term/rxvt term/xterm xterm byte-opt gv bytecomp byte-compile server rmc iso-transl tooltip cconv eldoc paren electric uniquify ediff-hook vc-hooks lisp-float-type elisp-mode tabulated-list replace newcomment text-mode lisp-mode prog-mode register page tab-bar menu-bar rfn-eshadow isearch easymenu timer select mouse jit-lock font-lock syntax font-core term/tty-colors frame minibuffer nadvice seq simple cl-generic indonesian philippine cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech european ethiopic indian cyrillic chinese composite emoji-zwj charscript charprop case-table epa-hook jka-cmpr-hook help abbrev obarray oclosure cl-preloaded button loaddefs theme-loaddefs faces cus-face macroexp files window text-properties overlay sha1 md5 base64 format env code-pages mule custom widget keymap hashtable-print-readable backquote threads inotify lcms2 multi-tty make-network-process tty-child-frames emacs) Memory information: ((conses 16 52990 10439) (symbols 48 6510 1) (strings 32 16235 1652) (string-bytes 1 429445) (vectors 16 8416) (vector-slots 8 76621 5913) (floats 8 33 11518) (intervals 56 248 14) (buffers 984 12))
Daniel Clemente <n142857@HIDDEN>
:bug-gnu-emacs@HIDDEN
.
Full text available.bug-gnu-emacs@HIDDEN
:bug#77233
; Package emacs
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Full text available.
GNU bug tracking system
Copyright (C) 1999 Darren O. Benham,
1997 nCipher Corporation Ltd,
1994-97 Ian Jackson.