T10619.hs:9:15: error:
• Couldn't match type ‘forall a. a -> a’ with ‘b -> b’
Expected type: (b -> b) -> b -> b
Actual type: (forall a. a -> a) -> b -> b
• In the expression:
((\ x -> x) :: (forall a. a -> a) -> forall b. b -> b)
In the expression:
if True then
((\ x -> x) :: (forall a. a -> a) -> forall b. b -> b)
else
\ y -> y
In an equation for ‘foo’:
foo _
= if True then
((\ x -> x) :: (forall a. a -> a) -> forall b. b -> b)
else
\ y -> y
• Relevant bindings include
foo :: t -> (b -> b) -> b -> b (bound at T10619.hs:8:1)
T10619.hs:14:15: error:
• Couldn't match type ‘forall a. a -> a’ with ‘b -> b’
Expected type: (b -> b) -> b -> b
Actual type: (forall a. a -> a) -> b -> b
• In the expression:
((\ x -> x) :: (forall a. a -> a) -> forall b. b -> b)
In the expression:
if True then
\ y -> y
else
((\ x -> x) :: (forall a. a -> a) -> forall b. b -> b)
In an equation for ‘bar’:
bar _
= if True then
\ y -> y
else
((\ x -> x) :: (forall a. a -> a) -> forall b. b -> b)
• Relevant bindings include
bar :: t -> (b -> b) -> b -> b (bound at T10619.hs:12:1)
T10619.hs:16:13: error:
• Couldn't match type ‘forall a. a -> a’ with ‘b -> b’
Expected type: (b -> b) -> b -> b
Actual type: (forall a. a -> a) -> b -> b
• In the expression:
(\ x -> x) :: (forall a. a -> a) -> forall b. b -> b
In an equation for ‘baz’:
baz True = (\ x -> x) :: (forall a. a -> a) -> forall b. b -> b
• Relevant bindings include
baz :: Bool -> (b -> b) -> b -> b (bound at T10619.hs:16:1)
T10619.hs:20:14: error:
• Couldn't match type ‘forall a. a -> a’ with ‘b -> b’
Expected type: (b -> b) -> b -> b
Actual type: (forall a. a -> a) -> b -> b
• In the expression:
(\ x -> x) :: (forall a. a -> a) -> forall b. b -> b
In an equation for ‘quux’:
quux True = (\ x -> x) :: (forall a. a -> a) -> forall b. b -> b
• Relevant bindings include
quux :: Bool -> (b -> b) -> b -> b (bound at T10619.hs:19:1)