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Fri, 5 Nov 2021 20:08:33 +0000 Message-ID: <2cfa5de7-3b95-9062-4572-f36d304bc916@cornell.edu> Date: Fri, 5 Nov 2021 16:08:31 -0400 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.3.0 Subject: Re: 3.3.0: Possible regression in cygwin DLL (Win10); fixed in snapshot Content-Language: en-US To: cygwin@cygwin.com References: <20211105123950.b118a7f2ba38379764df4c12@nifty.ne.jp> <20211105170542.96ce6dd4ca32880ddfddd660@nifty.ne.jp> <20211106044116.698b465a5d8ed6ce2cc75c99@nifty.ne.jp> From: Ken Brown In-Reply-To: <20211106044116.698b465a5d8ed6ce2cc75c99@nifty.ne.jp> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: BL1P221CA0005.NAMP221.PROD.OUTLOOK.COM (2603:10b6:208:2c5::19) To BN7PR04MB4388.namprd04.prod.outlook.com (2603:10b6:406:f8::19) MIME-Version: 1.0 Received: from [10.13.22.5] (65.112.130.200) by BL1P221CA0005.NAMP221.PROD.OUTLOOK.COM (2603:10b6:208:2c5::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4669.10 via Frontend Transport; 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I could reproduce the problem. > > It seems that the cause is the overhaul for the pipe implementation. > I also found the workaround for this issue. Please try: > export CYGWIN=pipe_byte > > Corinna, Ken, > What about setting pipe mode to byte by default? I have a vague recollection that this caused some other problem, but I'll have to review the email discussions from a few months ago. I'm traveling at the moment and won't get to this for a few days. In the meantime, could you explain (probably on cygwin-developers) why message mode causes the reported issue? Also, does the problem occur only when there are non-Cygwin apps involved? Thanks. Ken