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{-# LANGUAGE CPP #-}
module Main where
import Control.Exception
import Control.Concurrent
#if __GLASGOW_HASKELL__ < 705
import Prelude hiding (catch)
#endif
import System.Mem
-- illustrates the BlockOnDeadMVar exception
main = do
id <- myThreadId
forkIO (catch (do m <- newEmptyMVar; takeMVar m)
(\e -> throwTo id (e::SomeException)))
catch (do yield; performGC; threadDelay 1000000)
(\e -> print (e::SomeException))
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