X-Recipient: archive-cygwin AT delorie DOT com DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 3A5443959E5F DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cygwin.com; s=default; t=1614784306; bh=JGoUlsXXt5idlXkVYZd6yir5GT1ZsuCye+83jyoDIDI=; h=Date:Subject:To:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:From; b=yhLfw2R/XD+yz4UTz57FKuS0NDe4W3GepVGRbazGhDpTPN3/PWu6KvPqzIn+E1Bzz RMaPD34LAg4rLrUsqTBa13QoS+fBWn3enNdHrp+ceCxWzVITR2a0FnYi7hAXjLeR4U NUWCJqFZwIzd6JiDaWfRxFRjXod6eRpskayiYCwI= X-Original-To: cygwin AT cygwin DOT com Delivered-To: cygwin AT cygwin DOT com DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 07A41385041C X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=VAMO6Dd5UojFVCxc7jMUUJvQMKGqNoXy5FtaCmC/exs=; b=NZlq748G/6dW6ZuGxZh9xRJ/AJd02lL5MVj90eVyVBj6A8Do2B9mpPly25vpW9s8F6 7ctTlxOSTBzTIB1Qnj6MAoYF67g+2/or5pBOMKYc0tGES78e0Tg+rSUpKSmNg+ozlwuD HE/VEQSYEaUpXMWK+EfzW2b9Le2tkXuqBed7upmBHwW+E0/T102fnAOne4zwz04CjbDM ihx23RKjFpC0efUg6ja+6ucadtj0hFZZm4fHK8ey8m0nsrY1JfDt2BaN6PX+aJm5vzNQ OOd62ln0PtNeGne3f1JStwQWetJ7/QFjV1GxCuJOAthHVwHjIHUfrmQlTEYm4X+66nnv c3qA== X-Gm-Message-State: AOAM530z1wbLc1yh+5XtK7Ld1cYDYMqr2rVjizFMila7KvdvcVieCVBd xypLgEHRZMn/TcxJ8/crDdMyQ2UxuyHc09nZKqNVrwtuz5w= X-Google-Smtp-Source: ABdhPJxIZmaHJUHFJWF7i8UFb9eaF3r8dco4We3HnROj7wWWsZkwkWFTdJJ85xz6Wxgm5rnUyyTkdqcvMtM0WWyAs+A= X-Received: by 2002:a05:6a00:22ca:b029:1ed:f915:ca98 with SMTP id f10-20020a056a0022cab02901edf915ca98mr3434664pfj.68.1614784301576; Wed, 03 Mar 2021 07:11:41 -0800 (PST) MIME-Version: 1.0 Date: Wed, 3 Mar 2021 16:11:30 +0100 Message-ID: Subject: Issue: Reading from stdin in Cywin64 Terminal (first noticed with Git Bash) with a .Net framework application hangs after some time To: "cygwin AT cygwin DOT com" X-Spam-Status: No, score=-0.5 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, HTML_MESSAGE, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-Content-Filtered-By: Mailman/MimeDel 2.1.29 X-BeenThere: cygwin AT cygwin DOT com X-Mailman-Version: 2.1.29 List-Id: General Cygwin discussions and problem reports List-Archive: List-Post: List-Help: List-Subscribe: , From: Nitro Vent via Cygwin Reply-To: Nitro Vent Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Cygwin" I have two .Net console applications targeting .Net Framework 4.7.2, "produce.exe" and "consume.exe" with their respective sources using System;using System.Threading; namespace Produce { class Program { static void Main(string[] args) { Thread.Sleep(100); Console.WriteLine("Hello World."); } } } and using System; namespace Consume { class Program { static void Main(string[] args) { var input = Console.In.ReadToEnd(); Console.WriteLine(input); } } } Running $ ./produce.exe | ./consume.exe in Cygwin Terminal I expect the output to be Hello World. But there is no output and the second process, consume.exe, hangs at ReadToEnd(). This was verified by looking at the running processes with ps aux when running the consume.exe in the background as well as by attaching the Visual Studio debugger. Piping produce.exe into cat works correctly. Piping some more content into consume.exe also fails (e.g. find * /usr | consume) Executing the same command in Windows Command works correctly. Notice that piping into consume.exe works if there is no delay in the producer. I had first opened this issue on Github in the git-for-windows project, as I experienced the issue with Git Bash in Windows first: https://github.com/git-for-windows/git/issues/3075 I then installed the current version of Cygwin and could replicate the same issue there. PS: I have not attached the output of cygcheck because it would reveal information of my work environment I will not share. Greetings, Jasper -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple