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{-# LANGUAGE RankNTypes, ScopedTypeVariables #-}
-- This fails, because the type in the pattern doesn't exactly match
-- the context type. We don't do subsumption in patterns any more.
-- GHC 7.0: now we do again
module Foo where
foo :: (forall c. c -> c) -> [Char]
foo (f :: forall a. [a] -> [a]) = f undefined
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