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{-# LANGUAGE Haskell2010 #-}
{-# LANGUAGE MagicHash #-}
{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE StandaloneKindSignatures #-}
{-# LANGUAGE UnboxedTuples #-}
module RepPolyPatBind where
import Data.Kind
import GHC.Exts
foo :: forall rep (a :: TYPE rep). () -> a
foo _ =
let
x, y :: a
(# x, y #) = undefined
in x
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