(redirecting to haskell-cafe. the haskell mailing list is primarily for announcements) (sorry, Thomas, if you get this message twice) Thomas Bevan wrote:
I've written the programme below.
The lircLoop should never terminate. Unfortunately it does. Worse, no error messages are generated. Not even the final line "Closing down" is printed.
How is this possible?
I couldn't find the Hmpf.Fork module you're using, so I couldn't test this. However, one possibility is that program receives a signal that is neither handled or ignored. This is the case for SIGPIPE [1]. You can strace your program to find out whether that's the case. System.Posix.Process provides facilities for installing your own signal handlers. HTH, Bertram [1] http://hackage.haskell.org/trac/ghc/ticket/1619