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-- !!! an example Simon made up
--
module ShouldSucceed where
f x = (x+1, x<3, g True, g 'c')
where
g y = if x>2 then [] else [y]
{-
Here the type-check of g will yield an LIE with an Ord dict
for x. g still has type forall a. a -> [a]. The dictionary is
free, bound by the x.
It should be ok to add the signature:
-}
f2 x = (x+1, x<3, g2 True, g2 'c')
where
-- NB: this sig:
g2 :: a -> [a]
g2 y = if x>2 then [] else [y]
{-
or to write:
-}
f3 x = (x+1, x<3, g3 True, g3 'c')
where
-- NB: this line:
g3 :: a -> [a]
g3 = (\ y -> if x>2 then [] else [y])::(a -> [a])
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