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{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE UnboxedTuples #-}
{-# LANGUAGE RankNTypes #-}
{-# LANGUAGE MagicHash #-}
{-# LANGUAGE LinearTypes #-}
module Bug where
import GHC.Exts (TYPE, RuntimeRep, Weak#, State#, RealWorld, mkWeak# )
class Foo (a :: TYPE rep) where
bar :: forall rep2 (b :: TYPE rep2). (a #-> a #-> b) -> a #-> a #-> b
baz :: forall rep (a :: TYPE rep). Foo a => a #-> a #-> (# a, a #)
baz = bar (#,#)
obscure :: (forall (rep1 :: RuntimeRep) (rep2 :: RuntimeRep)
(a :: TYPE rep1) (b :: TYPE rep2).
a #-> b #-> (# a, b #)) -> ()
obscure _ = ()
quux :: ()
quux = obscure (#,#)
primop :: forall (rep :: RuntimeRep) (a :: TYPE rep) b c.
a -> b -> (State# RealWorld -> (# State# RealWorld, c #))
-> State# RealWorld -> (# State# RealWorld, Weak# b #)
primop = mkWeak#
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