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Negative impls (with feature gate) #73

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nikomatsakis opened this issue Jun 25, 2022 · 1 comment

Open

Tracked by

Negative impls (with feature gate) #73

nikomatsakis opened this issue Jun 25, 2022 · 1 comment

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nikomatsakis commented Jun 25, 2022

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nikomatsakis mentioned this issue

coherence spike #49

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yoshuawuyts commented Jun 29, 2023 •

edited

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I believe this may already have been implemented? E.g. the following test is part of the passing test suite:

a-mir-formality/tests/coherence_overlap.rs

Lines 149 to 153 in ca14d99

    
                       crate core { 
        
                           trait Foo<> where [] {} 
        
                           impl<ty T> Foo<> for T where [T: Foo<>] {} 
        
                           impl<> !Foo<> for u32 where [] {} 
        
                       }

edit: landed in #123

yoshuawuyts mentioned this issue

Negative bounds (with feature gate) #129

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