Re: [nhc-bugs] fixIO

Ross Paterson writes:

The definition of fixIO used by Nhc (in System.IO), namely fixIO f = let x = unsafePerformIO (f x) in return x produces the wrong results. I suggest: fixIO f = IO (\w -> let { IO f' = f a; r = f' w; Right a = r } in r)

Thanks for the bug report and the fix, now committed. Regards, Malcolm