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[project @ 1996-01-08 20:28:12 by partain]
[ghc-hetmet.git]
/
ghc
/
compiler
/
tests
/
deriving
/
drv002.hs
1
data Z a b
2
= C1 (T a)
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| C2 (Z [a] [b])
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deriving Text
5
6
data T a
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= E1
8
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instance Eq a => Text (T a) where
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showsPrec = error "show"
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readsPrec = error "read"