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tcfail068.hs:14:9:
Could not deduce (s1 ~ s)
from the context (Constructed a)
bound by the type signature for
itgen :: Constructed a => (Int, Int) -> a -> IndTree s a
at tcfail068.hs:11:10-55
`s1' is a rigid type variable bound by
a type expected by the context: GHC.ST.ST s1 (IndTree s a)
at tcfail068.hs:13:9
`s' is a rigid type variable bound by
the type signature for
itgen :: Constructed a => (Int, Int) -> a -> IndTree s a
at tcfail068.hs:11:53
Expected type: GHC.ST.ST s1 (IndTree s a)
Actual type: GHC.ST.ST s1 (STArray s1 (Int, Int) a)
In the return type of a call of `newSTArray'
In the first argument of `runST', namely
`(newSTArray ((1, 1), n) x)'
In the expression: runST (newSTArray ((1, 1), n) x)
tcfail068.hs:19:21:
Could not deduce (s ~ s1)
from the context (Constructed a)
bound by the type signature for
itiap :: Constructed a =>
(Int, Int) -> (a -> a) -> IndTree s a -> IndTree s a
at tcfail068.hs:16:10-75
`s' is a rigid type variable bound by
the type signature for
itiap :: Constructed a =>
(Int, Int) -> (a -> a) -> IndTree s a -> IndTree s a
at tcfail068.hs:16:58
`s1' is a rigid type variable bound by
a type expected by the context: GHC.ST.ST s1 (IndTree s a)
at tcfail068.hs:18:9
Expected type: STArray s1 (Int, Int) a
Actual type: IndTree s a
In the first argument of `readSTArray', namely `arr'
In the first argument of `(>>=)', namely `readSTArray arr i'
In the first argument of `runST', namely
`(readSTArray arr i
>>= \ val -> writeSTArray arr i (f val) >> return arr)'
tcfail068.hs:24:35:
Could not deduce (s ~ s1)
from the context (Constructed a)
bound by the type signature for
itrap :: Constructed a =>
((Int, Int), (Int, Int)) -> (a -> a) -> IndTree s a -> IndTree s a
at tcfail068.hs:23:10-87
`s' is a rigid type variable bound by
the type signature for
itrap :: Constructed a =>
((Int, Int), (Int, Int)) -> (a -> a) -> IndTree s a -> IndTree s a
at tcfail068.hs:23:70
`s1' is a rigid type variable bound by
a type expected by the context: GHC.ST.ST s1 (IndTree s a)
at tcfail068.hs:24:29
Expected type: GHC.ST.ST s1 (IndTree s a)
Actual type: GHC.ST.ST s (IndTree s a)
In the return type of a call of itrap'
In the first argument of `runST', namely `(itrap' i k)'
In the expression: runST (itrap' i k)
tcfail068.hs:36:46:
Could not deduce (s ~ s1)
from the context (Constructed b)
bound by the type signature for
itrapstate :: Constructed b =>
((Int, Int), (Int, Int))
-> (a -> b -> (a, b))
-> ((Int, Int) -> c -> a)
-> (a -> c)
-> c
-> IndTree s b
-> (c, IndTree s b)
at tcfail068.hs:(34,15)-(35,62)
`s' is a rigid type variable bound by
the type signature for
itrapstate :: Constructed b =>
((Int, Int), (Int, Int))
-> (a -> b -> (a, b))
-> ((Int, Int) -> c -> a)
-> (a -> c)
-> c
-> IndTree s b
-> (c, IndTree s b)
at tcfail068.hs:35:40
`s1' is a rigid type variable bound by
a type expected by the context: GHC.ST.ST s1 (c, IndTree s b)
at tcfail068.hs:36:40
Expected type: GHC.ST.ST s1 (c, IndTree s b)
Actual type: GHC.ST.ST s (c, IndTree s b)
In the return type of a call of itrapstate'
In the first argument of `runST', namely `(itrapstate' i k s)'
In the expression: runST (itrapstate' i k s)
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