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tcfail076.hs:19:82: error: [GHC-25897]
• Couldn't match type ‘res1’ with ‘res’
Expected: m res1
Actual: m res
‘res1’ is a rigid type variable bound by
a type expected by the context:
forall res1. (b -> m res1) -> m res1
at tcfail076.hs:19:71-88
‘res’ is a rigid type variable bound by
a type expected by the context:
forall res. (a -> m res) -> m res
at tcfail076.hs:19:35-96
• In the expression: cont a
In the first argument of ‘KContT’, namely ‘(\ cont' -> cont a)’
In the expression: KContT (\ cont' -> cont a)
• Relevant bindings include
cont' :: b -> m res1 (bound at tcfail076.hs:19:73)
cont :: a -> m res (bound at tcfail076.hs:19:37)
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