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{-# LANGUAGE MultiParamTypeClasses, FunctionalDependencies #-}
{-# LANGUAGE FlexibleInstances, FlexibleContexts #-}
-- #1781
-- This one should really succeed, because 'plus' can only
-- be called with a = Int->Int, but the old fundep story
-- certainly made it fail, and so that's what we expect for now
-- We may become more liberal later
module ShouldCompile where
class E a b | a -> b, b -> a
instance E a a
plus :: (E a (Int -> Int)) => Int -> a
plus x y = x + y
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