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To: cygwin-developers@cygwin.com References: <20210915092100.796985ae33039f3184483450@nifty.ne.jp> <20210915094454.42ef1d085d9bf92a1af8d39a@nifty.ne.jp> <20210915095911.415d174ea38fb2d2ea8e5432@nifty.ne.jp> <20210915194858.845bcd54c0c63246b40703a8@nifty.ne.jp> <20210915205433.014102a9c1204687135e1417@nifty.ne.jp> <20210915220450.a96397d8b8159d9adfbdab07@nifty.ne.jp> From: Ken Brown Message-ID: <3ca95472-9fb2-3e62-3e28-1bd2f85bc018@cornell.edu> Date: Wed, 15 Sep 2021 12:22:58 -0400 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.14.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-ClientProxiedBy: CH0PR08CA0018.namprd08.prod.outlook.com (2603:10b6:610:33::23) To BN7PR04MB4388.namprd04.prod.outlook.com (2603:10b6:406:f8::19) MIME-Version: 1.0 Received: from [IPv6:2603:7081:7e3f:3419:1d84:cb99:9c15:8cd0] (2603:7081:7e3f:3419:1d84:cb99:9c15:8cd0) by CH0PR08CA0018.namprd08.prod.outlook.com (2603:10b6:610:33::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4523.14 via Frontend Transport; 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/* We cannot know actual write pipe space. */ DWORD nbytes_in_pipe; if (!PeekNamedPipe (query_hdl, NULL, 0, NULL, &nbytes_in_pipe, NULL)) - return 1; + return -1; fpli.WriteQuotaAvailable = fpli.InboundQuota - nbytes_in_pipe; } if (fpli.WriteQuotaAvailable > 0) Having noticed that, I checked the callers of pipe_data_available with writing == true, and they don't check for a return of -1. So I think I need to fix that too. Ken