Malcolm:
> Does anyone know what might be causing the following error from a
> program that uses System.system?
> Fail: interrupted Action: system Reason: Interrupted system call
> The shell command given to System.system runs and terminates with a
> non-zero exit code (actually 8). I expected to bind the exit result
> of the shell command and display it, but I did not expect the entire
> program to terminate instead.
> Unfortunately, small examples do not seem to trigger the problem.
It sounds a little like a problem I had where trap 26 (I think this is
a timer signal) was interrupting the subprocess. Nowadays I use this
function:
my_system :: String -> IO ExitCode
my_system xs = do
-- putStrLn xs -- for debugging
-- Bugfix for ghc (may not be needed in recent versions of GHC)
rc <- System.system ("trap '' 26; " ++ xs)
unless (rc == ExitSuccess) $ putStrLn xs
return rc
The extra putStrLns are, of course, optional.
--
Alastair
_______________________________________________
Glasgow-haskell-bugs mailing list
[EMAIL PROTECTED]
http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
