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//@ check-pass
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#![feature(negative_impls)]
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#![feature(rustc_attrs)]
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#![feature(trait_alias)]
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#![feature(with_negative_coherence)]
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trait A {}
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trait B {}
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trait AB = A + B;
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impl !A for u32 {}
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#[rustc_strict_coherence]
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trait C {}
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impl<T: AB> C for T {}
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impl C for u32 {}
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fn main() {}
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