hi folks,
i'm using ghc6 (apt-get install ghc6) on debian31. as far is i
understand, the following program shouldn't crash. can somebody tell me
why it does? thanks a lot. johannes.
module Main(main) where
import Control.Concurrent.STM
import System.IO.Unsafe
{-# NOINLINE a #-}
a :: TMVar Int
a = unsafePerformIO $ atomically $ newTMVar 123
main = do
atomically $ takeTMVar a >>= putTMVar a
ghc --make -fno-cse Test.hs -o test
./test
Segmentation fault
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