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{-# LANGUAGE Haskell2010 #-}
{-# LANGUAGE MagicHash, UnboxedTuples #-}
-- Test case for #5681
module Main where
import GHC.Exts
work :: Int -> Int
work n = work (n-1)
main :: IO ()
main = case spark# (work 2) realWorld# of
(# _, _ #) -> case par# (work 1) of
_ -> return ()
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