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{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE RankNTypes #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TypeApplications #-}
module T13738 where
import Data.Coerce
import Data.Proxy
foo x = coerce @(forall (a :: k). Proxy a -> Int)
@(forall (a :: k). Proxy a -> Int)
x
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