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T10619.hs:9:15: error:
• Couldn't match type ‘p’ with ‘forall b. b -> b’
Expected: p -> p
Actual: (forall a. a -> a) -> forall b. b -> b
‘p’ is a rigid type variable bound by
the inferred type of foo :: p1 -> p -> p
at T10619.hs:(8,1)-(10,20)
• 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 :: p1 -> p -> p (bound at T10619.hs:8:1)
T10619.hs:14:15: error:
• Couldn't match type ‘p’ with ‘forall a. a -> a’
Expected: p -> p
Actual: (forall a. a -> a) -> forall b. b -> b
‘p’ is a rigid type variable bound by
the inferred type of bar :: p1 -> p -> p
at T10619.hs:(12,1)-(14,66)
• 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 :: p1 -> p -> p (bound at T10619.hs:12:1)
T10619.hs:16:13: error:
• Couldn't match type ‘p’ with ‘forall b. b -> b’
Expected: p -> p
Actual: (forall a. a -> a) -> forall b. b -> b
‘p’ is a rigid type variable bound by
the inferred type of baz :: Bool -> p -> p
at T10619.hs:(16,1)-(17,19)
• 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 -> p -> p (bound at T10619.hs:16:1)
T10619.hs:20:14: error:
• Couldn't match type ‘p’ with ‘forall a. a -> a’
Expected: p -> p
Actual: (forall a. a -> a) -> forall b. b -> b
‘p’ is a rigid type variable bound by
the inferred type of quux :: Bool -> p -> p
at T10619.hs:(19,1)-(20,64)
• 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 -> p -> p (bound at T10619.hs:19:1)
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