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Date: Sat, 23 Jun 2012 01:42:07 +0400
From: Andrey Repin <anrdaemon AT freemail DOT ru>
Reply-To: Andrey Repin <cygwin AT cygwin DOT com>
Message-ID: <551322972.20120623014207@mtu-net.ru>
To: Jamie Briggs <jamie DOT briggs AT shaw DOT ca>, cygwin AT cygwin DOT com
Subject: Re: cygwin 1.7.15-1 - .NET console output locks up mintty
In-Reply-To: <20120622181032.GA29688@shaw.ca>
References: <20120622022137 DOT GA24472 AT shaw DOT ca> <31937321 DOT 20120622144920 AT mtu-net DOT ru> <20120622181032 DOT GA29688 AT shaw DOT ca>
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Greetings, Jamie Briggs!

>> > I have noticed a problem with the "cygwin: The Unix emulation engine" package,
>> > version 1.7.15-1.  Output from .NET console does not show up, the console
>> > (mintty) becomes unresponsive and must be killed.  
>> 
>> > Reverting back to 1.7.14-2 fixes the problem.
>> 
>> > The problem can be demonstrated using a HelloWorld.cs containing:
>> 
>> >    using System;
>> 
>> >    public class Program
>> >    {
>> >           static void Main(string[] args)
>> >          {
>> >                Console.WriteLine("Hello");
>> >          }
>> >    }
>>    
>> > compiling with:   csc HelloWorld.cs
>> 
>> > and then running:  ./HelloWorld.exe
>> 
>> > This results in no output and an unresponsive mintty under 1.7.15-1.  If
>> > "cmd.exe" is ran on top of bash and then HelloWorld is ran there it does the
>> > same thing.  After reverting to 1.7.14-2 everything is working normally again.  
>> 
>> > I am building the executables with VS2010 and running on 64bit Windows7.  I am
>> > attaching my cygcheck.out file.
>> 

> Earnie Boyd asked:

>> Does the result change if you install the latest snapshot of
>> cygwin1.dll from cygwin.com/snapshots?

> Yes, replacing cygwin1.dll with the latest snapshot, cywgin1-20120619.dll,
> makes the observed problem go away.

> James Johnson asked:

>> Try both of the following:
>> 
>> 1.  Update to latest development snapshot, should resolve the bug you are
>> primarily observing.
>> 2.  Set the CYGWIN environment variable to pipe_byte.  Cygwin now uses
>> message pipes by default, which are not compatible with .NET Framework and
>> Visual C++ runtimes (not currently documented anywhere in Cygwin or MS
>> documentation)

> 1. I'm not sure how to do that.

Run CMD.EXE, say "SET CYGWIN=pipe_byte", run bash -l from the same prompt, and
try to reproduce your issue.

> 2. Running "export CYGWIN=pipe_byte" and then the .NET HelloWorld program still
>    exhibited the problem.

The CYGWIN environment variable is a configuration for cygwin1.dll, it's "a bit"
late to define it, when you already have any cygwin1.dll dependent application
running.


--
WBR,
Andrey Repin (anrdaemon AT freemail DOT ru) 23.06.2012, <01:39>

Sorry for my terrible english...


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