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module Main where
import Control.Concurrent
import Control.Exception
--import GlaExts
data Result = Died SomeException | Finished
-- Test stack overflow catching. Should print "Died: stack overflow".
stackoverflow :: Int -> Int
stackoverflow 0 = 1
stackoverflow n = n + stackoverflow n
main = do
let x = stackoverflow 1
result <- newEmptyMVar
forkIO $ Control.Exception.catch (evaluate x >> putMVar result Finished) $
\e -> putMVar result (Died e)
res <- takeMVar result
case res of
Died e -> putStr ("Died: " ++ show e ++ "\n")
Finished -> putStr "Ok.\n"
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