I just tried to compile this program (based on figure one in "The GRIN Project:
A Highly Optimising Back End for Lazy Functional Languages"):
{-# OPTIONS_JHC -N -fffi #-}
import Jhc.Basics
import Jhc.Int
import Jhc.Num
import Jhc.Order
default (Integer, Double)
main = sum (upto 1 10)
upto m n | m > n = []
| otherwise = m : upto (m+1) n
sum [] = 0
sum (x:xs) = x + sum xs
And I got a stupid error about a missing "put" method for IORef. It seems that
the typechecker isn't getting rid of all the MetaVars in this program...
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