Bug? Re: GHC version 5.02.2 is available - SuSE RPMs
Sat, 12 Jan 2002 08:27:27 -0800
"Jorge Adriano" <firstname.lastname@example.org> writes:
> > module Main where
> > main :: IO()
> > main = do
> > putStr "n:"
> > n <- readLn :: IO(Int)
> > print n
> Used to work fine with ghc 5.00.2, that is, it would print "n:", then wait
> for the input, and finaly print n.
> With Ghc 5.02.2 it only prints "n:" after reading the n.
> Unless I'm missing something here it seems like a bug to me.
> Haven't tried installing from the tarball yet.
It's actually expected behaviour with the current IO implementation -
you have to explicitly flush stdout before reading from stdin (if stdout
is buffered, that is).
FWIW, I don't think this is the Right behaviour either.