[Haskell-cafe] createProcess running non-existent programs

I just came across the fact that running createProcess (proc "asdfasdf" []) with non-existing command "asdfasdf" returns perfectly fine handles. I would expect an exception. You can even hGetContents on stdout: You just get "". I find this highly counter-intuitive. Is this intended? Thanks Niklas PS: I checked how some other programming languages do this: Python: import subprocess; subprocess.call("asdfasdf", shell=False) OSError: [Errno 2] No such file or directory Ruby: exec("asdfasdf") Errno::ENOENT: No such file or directory - asdfasdf