On Thu, Apr 19, 2012 at 12:56:33PM +0100, somebody wrote: >Hi all, > >This started in 1.7.10 and I thought this may be fixed in 1.7.12 due >to emails in the mailing list: >http://sourceware.org/ml/cygwin/2012-03/msg00666.html > >But there still seems to be a problem piping from a .net console >application to a visual c++ console application. > >Using the following simple C# program complied using "csc /optimize >/target:exe /out:./consoleout.exe Program.cs" > >>>>> Begin Program.cs >namespace consoleout >{ > using System; > > internal static class Program > { > private static void Main(string[] args) > { > foreach (var arg in args) { > Console.Out.WriteLine(arg); > } > } > } >} ><<<< End Program.cs > >I can use this to output to cygwin exes OK >$ ./consoleout.exe Hello There | cat >Hello >There >$ ./consoleout.exe Hello There | grep ll >1:Hello >$ > >I also created a visual c++ executable like the simple one below >compiled with "cl /EHs readin.cxx /link" > >>>>> Begin readin.cxx >#include <string> >#include <iostream> > >int >main(int argc, char** argv) >{ > static_cast<void>(argc); > static_cast<void>(argv); > std::string buf; > buf.reserve(1024); > while (std::getline(std::cin, buf, '\n')) { > std::cout << buf << '\n'; > } > return EXIT_SUCCESS; >} ><<<< End readin.cxx > >I can use this to output anything read in >$ echo Hello | ./readin.exe >Hello >$ cat 'readin.cxx' | ./readin.exe >#include <string> >#include <iostream> > >int >main(int argc, char** argv) >{ > static_cast<void>(argc); > static_cast<void>(argv); > std::string buf; > buf.reserve(1024); > while (std::getline(std::cin, buf, '\n')) { > std::cout << buf << '\n'; > } > return EXIT_SUCCESS; >} >$ > >But when combining the two, nothing happens. >$ ./consoleout.exe Hello There | ./readin.exe >$ > >It "seems" as though the console out from the .net is not being >correctly piped through to a vc++ program. I know that is a strange >defect given all the other combinations work. > >The reverse works i.e. output from a visual c++ console application is >piped correctly to a .net console application. > >This worked prior to 1.7.10 (1.7.9 and before). > >I am sorry that I cannot point to an area in the Cygwin code or >suggest a fix, but I am hoping this is enough of a description to help >someone find out what the issue is.
Sorry but I'm not going to set up a .NET development environment to figure out a problem. If someone else wants to provide a clue as to what's going on, I'd appreciate it. -- 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
