ref: 68b926036362b36c7733f596742c657a07231f9d
dir: /tests/NoForall.hs/
module NoForall where
-- Without an explicit forall the 'a' is not bound in the body.
f :: a -> ((a,a),(a,a))
f x =
  let g :: a -> (a,a)
      g a = (a,a)
  in  g (x,x)
main :: IO ()
main = print (f True)