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{-# LANGUAGE CPP #-}
module Main where
import Control.Exception
import Control.Concurrent
#if __GLASGOW_HASKELL__ < 705
import Prelude hiding (catch)
#endif
-- the ThreadKilled exception doesn't cause any output by default
main = do
m <- newEmptyMVar
id <- forkIO (takeMVar m)
yield
killThread id
putMVar m ()
print (sum [1..50000])
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