hi
i run into a bug in the implementation if the ST monad:
f = fixST $ const $ return 'z' >>= return
Main> runST f
'\
Program error: Prelude.!!: negative index
it looks like there is a bug with the pointers and the wrong type of thing
gets written somewhere.
here is another example:
f = fixST $ const $ return 'z' >>= return . ord
Main> runST f
('z',)
bye
iavor
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