From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from conssluserg-01.nifty.com (conssluserg-01.nifty.com [210.131.2.80]) by sourceware.org (Postfix) with ESMTPS id 99ED23858D1E for ; Thu, 22 Dec 2022 13:55:11 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 99ED23858D1E Authentication-Results: sourceware.org; dmarc=fail (p=none dis=none) header.from=nifty.ne.jp Authentication-Results: sourceware.org; spf=fail smtp.mailfrom=nifty.ne.jp Received: from HP-Z230 (aj135041.dynamic.ppp.asahi-net.or.jp [220.150.135.41]) (authenticated) by conssluserg-01.nifty.com with ESMTP id 2BMDsjLP031129 for ; Thu, 22 Dec 2022 22:54:45 +0900 DKIM-Filter: OpenDKIM Filter v2.10.3 conssluserg-01.nifty.com 2BMDsjLP031129 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nifty.ne.jp; s=dec2015msa; t=1671717285; bh=8a1qxYZPHLAyaGvpEnQ9S3xCZWdcKavdkqBT/l0n4tA=; h=Date:From:To:Subject:In-Reply-To:References:From; b=f3kqoMGMU8E9zkdyPV+yR0t7U4Lk4EKzMy8HmOs+7Ak4dTwAnp/+rDzZaX6Wbh7r+ iP3/Hbsv2//l43PCc8+F0dSTCo1Hupm3CYAJMJwtO2IZ8HNs4EM4bqqs3iq43UZphW YVzQV/pUSMUWdAtfYX4wcWcIakm0Ur3vrIuQv/+kW3hjNb6OWNtE9NkSx/f/IUm7pT K+R8SuxbQkFz1gzN5VQdNC89EYRjmhLWvmDddfNXDjKCPaaRcXwgF4to7yqVpLOM1X Z++f58RG62xP9g7wHCQQR7cOWPVZGvJdj+46wJ/Lq/gJfkZ1rimIHlrgyIp0TjxTny xxNifAXFkLRTA== X-Nifty-SrcIP: [220.150.135.41] Date: Thu, 22 Dec 2022 22:54:45 +0900 From: Takashi Yano To: cygwin@cygwin.com Subject: Re: Resizing window while showing git log locks up Command Line Message-Id: <20221222225445.359b688e8403e85f3ea9ebc6@nifty.ne.jp> In-Reply-To: <20221222181728.89ffee4e52192f270ccbef5a@nifty.ne.jp> References: <20221222181728.89ffee4e52192f270ccbef5a@nifty.ne.jp> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.30; i686-pc-mingw32) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-5.1 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,NICE_REPLY_A,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: On Thu, 22 Dec 2022 18:17:28 +0900 Takashi Yano wrote: > On Wed, 21 Dec 2022 21:30:35 +0000 > Adam Dinwoodie wrote: > > On Wed, 21 Dec 2022 at 16:08, Gregory Mason via Cygwin wrote: > > > > > > Hello Cygwin volunteers, > > > > > > I was asked to forward this bug report from the git-for-windows bug report: https://github.com/git-for-windows/git/issues/4060 > > > Original bug report from garretwilson > > > > > > > Find a Git repository with a long commit history. > > > > Enter `git log` > > > > Git will show the log history and wait for you to page through the history or hit q to exit. > > > > Press Win+Left-Arrow to snap the window to the left side of the screen. > > > > The window is now hung. Nothing can be typed to get it un-hung. Typing q does nothing. Typing Ctrl+C does nothing. Typing does nothing. > The only way out of this is to close the terminal window and start a new Command Prompt or PowerShell session. > > > > > > > > I've reproduced this with Command Line and with PowerShell 7.2.6. > > > > > > I am also experiencing this issue with the following setup: > > > CYGWIN_NT-10.0-19044 version 3.4.3-1.x86_64 (runneradmin@fv-az479-541) (gcc version 11.3.0 (GCC) ) 2022-12-16 12:38 UTC > > > > > > Windows 10 > > > Version 21H2 > > > Installed on ?7/?11/?2022 > > > OS build 19044.2251 > > > Experience Windows Feature Experience Pack 120.2212.4180.0 > > > > > > If you need further information, please let me know. > > > > This looks like it's an issue with less, which will be the pager that > > Git is using. I've just verified I can reproduce it by running > > `C:\cygwin64\bin\less.exe C:\cygwin64\var\log\setup.log` from within a > > PowerShell terminal, then resizing the terminal; it doesn't need to be > > a "snap" to trigger the behaviour. > > > > Somewhat to my surprise, `more` and `vim` don't exhibit this behaviour. > > Thanks for the report. I looked into this problem, and found > the cause. less uses longjmp in signal handler, and if signal > handler is called while cygwin acquiring the mutex, the mutex > will not be released. This causes deadlock. > > I will submit a patch for this issue shortly. Now test release with this patch is ready. Please test cygwin 3.5.0-0.63.gf6e4e98d3071 (Test). https://cygwin.com/faq.html#faq.setup.testrels -- Takashi Yano