GNU logs - #76256, boring messages

Message sent to bug-coreutils@HIDDEN:

Subject: bug#76256: cat: error without arguments
Resent-From: lilydjwg <lilydjwg@HIDDEN>
Original-Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org>
Resent-CC: bug-coreutils@HIDDEN
Resent-Date: Thu, 13 Feb 2025 08:01:02 +0000
Resent-Message-ID: <handler.76256.B.17394336183307 <at> debbugs.gnu.org>
Resent-Sender: help-debbugs@HIDDEN
To: 76256 <at> debbugs.gnu.org
Date: Thu, 13 Feb 2025 15:13:58 +0800
From: lilydjwg <lilydjwg@HIDDEN>
Message-ID: <Z62btiiauNHTZt-4@HIDDEN>
References: <Z62VE_yO1-a1Etna@HIDDEN>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <Z62VE_yO1-a1Etna@HIDDEN>
Received-SPF: pass client-ip=2607:f8b0:4864:20::62f;
 envelope-from=lilydjwg@HIDDEN; helo=mail-pl1-x62f.google.com
X-Spam_score_int: -20
X-Spam_score: -2.1
X-Spam_bar: --
X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,
 DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001,
 GB_FREEMAIL_DISPTO=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001,
 SPF_PASS=-0.001 autolearn=ham autolearn_force=no
X-Spam_action: no action
X-Spam-Score: 1.0 (+)
X-Mailman-Approved-At: Thu, 13 Feb 2025 03:00:16 -0500
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: -0.0 (/)

On Thu, Feb 13, 2025 at 02:45:39PM +0800, lilydjwg wrote:
> In the past I can run `cat` without any arguments and it prints
> whatever I type at the terminal. However since 9.6, `cat` reports the
> following error:
> 
> cat: -: input file is output file

Ah, I find it's not always reproducible, and a strace reveals that the
stdout flags are different:

Erroring cat (in my existing shell session):

fcntl(1</dev/pts/5<char 136:5>>, F_GETFL) = 0x402 (flags O_RDWR|O_APPEND)

Working cat (in a new shell session):

fcntl(1</dev/pts/11<char 136:11>>, F_GETFL) = 0x2 (flags O_RDWR)

I'm using zsh, and this issue starts to occur after I do a tab
completion (in my case, type "cat" and then tab). Other users report
that some fish completion can also cause this issue.

The terminal in use itself seems to not matter. I'm using GNOME
Terminal, inside and outside tmux.

-- 
Best regards,
lilydjwg

Message sent:

Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0
X-Mailer: MIME-tools 5.505 (Entity 5.505)
Content-Type: text/plain; charset=utf-8
X-Loop: help-debbugs@HIDDEN
From: help-debbugs@HIDDEN (GNU bug Tracking System)
To: lilydjwg <lilydjwg@HIDDEN>
Subject: bug#76256: Acknowledgement (cat: error without arguments)
Message-ID: <handler.76256.B.17394336183307.ack <at> debbugs.gnu.org>
References: <Z62btiiauNHTZt-4@HIDDEN>
X-Gnu-PR-Message: ack 76256
X-Gnu-PR-Package: coreutils
Reply-To: 76256 <at> debbugs.gnu.org
Date: Thu, 13 Feb 2025 08:01:03 +0000

Thank you for filing a new bug report with debbugs.gnu.org.

This is an automatically generated reply to let you know your message
has been received.

Your message is being forwarded to the package maintainers and other
interested parties for their attention; they will reply in due course.

Your message has been sent to the package maintainer(s):
 bug-coreutils@HIDDEN

If you wish to submit further information on this problem, please
send it to 76256 <at> debbugs.gnu.org.

Please do not send mail to help-debbugs@HIDDEN unless you wish
to report a problem with the Bug-tracking system.

--=20
76256: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D76256
GNU Bug Tracking System
Contact help-debbugs@HIDDEN with problems

Message received at control <at> debbugs.gnu.org:

Received: (at control) by debbugs.gnu.org; 14 Feb 2025 21:05:14 +0000
From debbugs-submit-bounces <at> debbugs.gnu.org Fri Feb 14 16:05:14 2025
Received: from localhost ([127.0.0.1]:52053 helo=debbugs.gnu.org)
	by debbugs.gnu.org with esmtp (Exim 4.84_2)
	(envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>)
	id 1tj2s5-0000A1-Pf
	for submit <at> debbugs.gnu.org; Fri, 14 Feb 2025 16:05:14 -0500
Received: from mail.cs.ucla.edu ([131.179.128.66]:60170)
 by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
 (Exim 4.84_2) (envelope-from <eggert@HIDDEN>)
 id 1tj2s2-0008Vr-N2
 for control <at> debbugs.gnu.org; Fri, 14 Feb 2025 16:05:11 -0500
Received: from localhost (localhost [127.0.0.1])
 by mail.cs.ucla.edu (Postfix) with ESMTP id 7920E3C00E409
 for <control <at> debbugs.gnu.org>; Fri, 14 Feb 2025 13:05:03 -0800 (PST)
Received: from mail.cs.ucla.edu ([127.0.0.1])
 by localhost (mail.cs.ucla.edu [127.0.0.1]) (amavis, port 10032) with ESMTP
 id 6CGSJjoI8Ed8 for <control <at> debbugs.gnu.org>;
 Fri, 14 Feb 2025 13:05:03 -0800 (PST)
Received: from localhost (localhost [127.0.0.1])
 by mail.cs.ucla.edu (Postfix) with ESMTP id 416B33C00E40A
 for <control <at> debbugs.gnu.org>; Fri, 14 Feb 2025 13:05:03 -0800 (PST)
DKIM-Filter: OpenDKIM Filter v2.10.3 mail.cs.ucla.edu 416B33C00E40A
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cs.ucla.edu;
 s=9D0B346E-2AEB-11ED-9476-E14B719DCE6C; t=1739567103;
 bh=jCkTF5XI+UXvIuljP0rKIjuM5Ev6oq0OG7+j5E5symk=;
 h=Message-ID:Date:MIME-Version:To:From;
 b=Qdnvqy5AY3NSTqbD9w5zsQXJn/sVLvmRnm5Luc7IYBGkD1crlCcChDGzULvdHlDIX
 ZguzowM6aiOOwYj67d+YdYRmzKtWVdD6RdwZ3PtJ2VA0D9rjNMrWuaJjRN52T7FNsw
 UqXK/BR2YHRCCjlFDCBSC19saZLCCKiWAtnSe1O39nqXDKpofzepH+9CUYeG7nCJ03
 4vH+VJh7+ftrUFx+OUU8iIkzxwBWTXHBfcWC1ppzZ5Z/7Hvx+OotSFL1WCnKkWgR7V
 EGl6QVqYP328BSSO2ZtHNoFqqIokANQiSMKcN/8O3Ribr2TVZ/kRadRbfYzNwEPpan
 qR8hDxzEN3r2g==
X-Virus-Scanned: amavis at mail.cs.ucla.edu
Received: from mail.cs.ucla.edu ([127.0.0.1])
 by localhost (mail.cs.ucla.edu [127.0.0.1]) (amavis, port 10026) with ESMTP
 id vEz4FfEmJh0O for <control <at> debbugs.gnu.org>;
 Fri, 14 Feb 2025 13:05:03 -0800 (PST)
Received: from [192.168.254.12] (unknown [47.147.225.25])
 by mail.cs.ucla.edu (Postfix) with ESMTPSA id 286963C00E409
 for <control <at> debbugs.gnu.org>; Fri, 14 Feb 2025 13:05:03 -0800 (PST)
Message-ID: <2350e1b8-0015-4415-8538-37ac79d19ff9@HIDDEN>
Date: Fri, 14 Feb 2025 13:05:02 -0800
MIME-Version: 1.0
User-Agent: Mozilla Thunderbird
Content-Language: en-US
To: control <at> debbugs.gnu.org
From: Paul Eggert <eggert@HIDDEN>
Subject: merge cat bugs
Organization: UCLA Computer Science Department
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
X-Spam-Score: 0.0 (/)
X-Debbugs-Envelope-To: control
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 (-)

merge 76255 76256 76257

Last modified: Fri, 14 Feb 2025 21:15:02 UTC

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997 nCipher Corporation Ltd, 1994-97 Ian Jackson.