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gadt-escape1.hs:19:58:
Couldn't match type ‘t’ with ‘ExpGADT Int’
‘t’ is untouchable
inside the constraints (t1 ~ Int)
bound by a pattern with constructor
ExpInt :: Int -> ExpGADT Int,
in a case alternative
at gadt-escape1.hs:19:43-50
‘t’ is a rigid type variable bound by
the inferred type of weird1 :: t at gadt-escape1.hs:19:1
Possible fix: add a type signature for ‘weird1’
Expected type: t
Actual type: ExpGADT t1
Relevant bindings include
weird1 :: t (bound at gadt-escape1.hs:19:1)
In the expression: a
In a case alternative: Hidden (ExpInt _) a -> a
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