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{-# LANGUAGE Haskell2010 #-}
{-# LANGUAGE RankNTypes, KindSignatures #-}
module ShouldFail where
-- There should be a kind error, when unifying (a b) against (c d)
foo = [ undefined :: forall a b. a b,
undefined :: forall (c:: (* -> *) -> *) (d :: * -> *). c d ]
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