rust/tests/ui/traits/negative-impls/feature-gate-negative_impls.rs

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trait MyTrait {}
impl !MyTrait for u32 {} //~ ERROR negative trait bounds are not yet fully implemented
fn main() {}
introduce `negative_impls` feature gate and document They used to be covered by `optin_builtin_traits` but negative impls are now applicable to all traits, not just auto traits. This also adds docs in the unstable book for the current state of auto traits. 2020-01-09 10:56:38 +00:00			`trait MyTrait {}`
			`impl !MyTrait for u32 {} //~ ERROR negative trait bounds are not yet fully implemented`
			`fn main() {}`