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src/test/ui/coherence/coherence-negative-outlives-lifetimes.rs
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#![feature(negative_impls)] | ||
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// FIXME: this should compile | ||
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trait MyPredicate<'a> {} | ||
impl<'a, T> !MyPredicate<'a> for &T where T: 'a {} | ||
trait MyTrait<'a> {} | ||
impl<'a, T: MyPredicate<'a>> MyTrait<'a> for T {} | ||
impl<'a, T> MyTrait<'a> for &'a T {} | ||
//~^ ERROR: conflicting implementations of trait `MyTrait<'_>` for type `&_` | ||
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fn main() {} |
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src/test/ui/coherence/coherence-negative-outlives-lifetimes.stderr
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error[E0119]: conflicting implementations of trait `MyTrait<'_>` for type `&_` | ||
--> $DIR/coherence-negative-outlives-lifetimes.rs:9:1 | ||
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LL | impl<'a, T: MyPredicate<'a>> MyTrait<'a> for T {} | ||
| ---------------------------------------------- first implementation here | ||
LL | impl<'a, T> MyTrait<'a> for &'a T {} | ||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `&_` | ||
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error: aborting due to previous error | ||
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For more information about this error, try `rustc --explain E0119`. |