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https://github.com/idris-lang/Idris2.git
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36 lines
791 B
Idris
36 lines
791 B
Idris
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%default total
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--------------------------------------------------------
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-- Shrunk
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data D : List (List a) -> Type where
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C1 : D [ts]
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C2 : D [ts]
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f : D [[Maybe a]] -> Nat
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f C1 = 0
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f C2 = 0
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--------------------------------------------------------
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-- Original bug report
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data NP : (ts : List Type) -> Type where
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Nil : NP []
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(::) : (v : t) -> (vs : NP ts) -> NP (t :: ts)
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data NS : (kss : List $ List Type) -> Type where
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Z : (vs : NP ts) -> NS (ts :: tss)
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S : NS tss -> NS (ts :: tss)
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Uninhabited (NS []) where
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uninhabited (Z _) impossible
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uninhabited (S _) impossible
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data Funny : (a : Type) -> (f : Type -> Type) -> Type where
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A : List a -> f a -> Funny a f
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B : Funny a f
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decode : NS [[List a, f a], []] -> Funny a f
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decode (Z [a,b]) = A a b
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decode (S (Z [])) = B
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