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14 changes: 14 additions & 0 deletions
14
tests/ui/feature-gates/feature-gate-async-fn-in-dyn-trait.rs
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//@ edition: 2021 | ||
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trait Foo { | ||
async fn bar(&self); | ||
} | ||
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async fn takes_dyn_trait(x: &dyn Foo) { | ||
//~^ ERROR the trait `Foo` cannot be made into an object | ||
x.bar().await; | ||
//~^ ERROR the trait `Foo` cannot be made into an object | ||
//~| ERROR the trait `Foo` cannot be made into an object | ||
} | ||
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fn main() {} |
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tests/ui/feature-gates/feature-gate-async-fn-in-dyn-trait.stderr
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error[E0038]: the trait `Foo` cannot be made into an object | ||
--> $DIR/feature-gate-async-fn-in-dyn-trait.rs:7:30 | ||
| | ||
LL | async fn takes_dyn_trait(x: &dyn Foo) { | ||
| ^^^^^^^ `Foo` cannot be made into an object | ||
| | ||
note: for a trait to be "dyn-compatible" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety> | ||
--> $DIR/feature-gate-async-fn-in-dyn-trait.rs:4:14 | ||
| | ||
LL | trait Foo { | ||
| --- this trait cannot be made into an object... | ||
LL | async fn bar(&self); | ||
| ^^^ ...because method `bar` is `async` | ||
= help: consider moving `bar` to another trait | ||
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error[E0038]: the trait `Foo` cannot be made into an object | ||
--> $DIR/feature-gate-async-fn-in-dyn-trait.rs:9:7 | ||
| | ||
LL | x.bar().await; | ||
| ^^^ `Foo` cannot be made into an object | ||
| | ||
note: for a trait to be "dyn-compatible" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety> | ||
--> $DIR/feature-gate-async-fn-in-dyn-trait.rs:4:14 | ||
| | ||
LL | trait Foo { | ||
| --- this trait cannot be made into an object... | ||
LL | async fn bar(&self); | ||
| ^^^ ...because method `bar` is `async` | ||
= help: consider moving `bar` to another trait | ||
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error[E0038]: the trait `Foo` cannot be made into an object | ||
--> $DIR/feature-gate-async-fn-in-dyn-trait.rs:9:5 | ||
| | ||
LL | x.bar().await; | ||
| ^^^^^^^ `Foo` cannot be made into an object | ||
| | ||
note: for a trait to be "dyn-compatible" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety> | ||
--> $DIR/feature-gate-async-fn-in-dyn-trait.rs:4:14 | ||
| | ||
LL | trait Foo { | ||
| --- this trait cannot be made into an object... | ||
LL | async fn bar(&self); | ||
| ^^^ ...because method `bar` is `async` | ||
= help: consider moving `bar` to another trait | ||
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error: aborting due to 3 previous errors | ||
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For more information about this error, try `rustc --explain E0038`. |