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{-# LANGUAGE MultiParamTypeClasses #-}
-- Tests top-level ambiguity resolution
-- This made a post-6.4 GHC fall over in TcSimplify
module ShouldFail where
class Foo a
instance Foo (a -> b)
foo :: Foo a => a -> ()
foo = undefined
class Bar a r
-- The same happens if we use fundeps:
-- class Bar a r | r -> a
bar :: Bar a r => r -> ()
bar = undefined
test = foo bar
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