Hi all,

I was trying out the enumerator package. I wanted to copy the contents of one file to another:

module Main where

import Data.Enumerator

main = run (enumFile "foo" $$ iterFile "bar")

If I compile this code with GHC, it works as expected. But if I run it with runhaskell I get the following error:

Left bar: hPutBuf: illegal operation (handle is closed)

If I replace the above code with this:

module Main where

import Data.Enumerator

import System.IO

main = withBinaryFile "bar" WriteMode $ \h ->

run (enumFile "foo" $$ iterHandle h)

It works both compiled and interpreted.

Is this a bug in enumerator (probably in the iterFile function) or a deficiency of the interpreter?