Hi all, I started observing some very strange effects when launching .NET programs from cygwin, after upgrading to version 1.7.10. The example below is using the MSBuild.exe as an example, but I get analogous results with any console program compiled for .NET. One can see that each pipeline works normally exactly once. The second time the pipe does not bring anything. I do not know if it is possible to reset it; killing all cygwin processes and logging off apparently does not help.
$ MSBuild.exe -version Microsoft (R) Build Engine Version 3.5.30729.1 [Microsoft .NET Framework, Version 2.0.50727.3625] Copyright (C) Microsoft Corporation 2007. All rights reserved. 3.5.30729.1 $ MSBuild.exe -version | head -1 Microsoft (R) Build Engine Version 3.5.30729.1 $ MSBuild.exe -version | head -1 $ MSBuild.exe -version | wc 4 20 177 $ MSBuild.exe -version | wc 0 0 0 One program that surprisingly does not get broken so easily is "perl" $ MSBuild.exe -version | perl -ne print | wc 4 20 177 $ MSBuild.exe -version | perl -ne print | wc 4 20 177 Output from normal DOS, windows and cygwin programs is not affected. Output redirection with ">" works as usual. Command substitution with $( ) or ` ` does not work if the output comes from .NET program: $ echo +++ `MSBuild /help` +++ +++ +++ $ echo +++ `MSBuild.exe /help>tmp.tmp ; dos2unix tmp.tmp; head tmp.tmp` +++ dos2unix: converting file tmp.tmp to Unix format ... +++ Microsoft (R) Build Engine Version 3.5.30729.1 [Microsoft .NET Framework, Version 2.0.50727.3625] Copyright (C) Microsoft Corporation 2007. All rights reserved. Syntax: MSBuild.exe [options] [project file] Description: Builds the specified targets in the project file. If a project file is not specified, MSBuild searches the current working directory for a file that has a file extension that ends in "proj" and uses that file. +++ I get similar results on other computers running Windows XP, Vista and 7 with 1.7.10 installed, but not with 1.7.9. Have you seen anything like this? How can it be fixed? Regards Ilya Beylin -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple