I would appreciate some help understanding (and solving) a problem with a small C program. It is being linked with MS "cl.exe", while in the Cygwin environment. When I run it in Cygwin, it immediately fails with "Invalid Argument" BEFORE it gets to "main". I'm reasonably certain it's before "main" because I have a printf call at the top of "main". When I run this executable in DOS, outside of "bash", it runs fine. I tried running it with a file I/O monitor running, and it doesn't show anything interesting, just the executable file being opened, a search for a PIF file, and then closing the executable file. What sort of things could I do to diagnose this? I'm an experienced C/C++ and Java programmer, but all of my C/C++ work has been on Unix. -- Want to unsubscribe from this list? Check out: http://cygwin.com/ml/#unsubscribe-simple