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{-# LANGUAGE ImplicitParams, RankNTypes #-}
-- GHC 5.02 got this one wrong.
module Main where
-- Implicit parameters bug
-- mbs@cse.ogi.edu 24-Oct-2001 22:21:27
f :: (?x :: Int) => ((?x :: Int) => Int) -> Int -> Int
f g y = if y == 0
then g
else let ?x = ?x + 1
in f g (y - 1)
h :: (?x :: Int) => Int
h = ?x
main = print (let ?x = 0 in f h 10)
-- The result should be 10!
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