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[ghc-hetmet.git]
/
ghc
/
tests
/
typecheck
/
should_fail
/
tcfail023.hs
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module ShouldFail where
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-- !!! Duplicate instances
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data B = C
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class A a where
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op :: a -> a
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instance A B where
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op C = True
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instance A B where
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op C = True
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