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maoe/Undecidable.hs

Created December 27, 2014 17:17
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Undecidable.hs
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE UndecidableInstances #-} -- GHC 7.6 needs this but GHC 7.8 does not
module Undecidable where
class a ~ a => C a
instance a ~ a => C a
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