| error[E0038]: the trait `Trait` is not dyn compatible |
| --> $DIR/dyn-incompatible-trait-should-use-where-sized.rs:9:12 |
| | |
| LL | fn bar(x: &dyn Trait) {} |
| | ^^^^^^^^^ `Trait` is not dyn compatible |
| | |
| note: for a trait to be dyn compatible it needs to allow building a vtable |
| for more information, visit <https://doc.rust-lang.org/reference/items/traits.html#dyn-compatibility> |
| --> $DIR/dyn-incompatible-trait-should-use-where-sized.rs:5:8 |
| | |
| LL | trait Trait { |
| | ----- this trait is not dyn compatible... |
| LL | fn foo() where Self: Other, { } |
| | ^^^ ...because associated function `foo` has no `self` parameter |
| LL | fn bar(self: ()) {} |
| | ^^ ...because method `bar`'s `self` parameter cannot be dispatched on |
| help: consider turning `foo` into a method by giving it a `&self` argument |
| | |
| LL | fn foo(&self) where Self: Other, { } |
| | +++++ |
| help: alternatively, consider constraining `foo` so it does not apply to trait objects |
| | |
| LL | fn foo() where Self: Other, Self: Sized { } |
| | +++++++++++ |
| help: consider changing method `bar`'s `self` parameter to be `&self` |
| | |
| LL - fn bar(self: ()) {} |
| LL + fn bar(self: &Self) {} |
| | |
| |
| error[E0307]: invalid `self` parameter type: `()` |
| --> $DIR/dyn-incompatible-trait-should-use-where-sized.rs:6:18 |
| | |
| LL | fn bar(self: ()) {} |
| | ^^ |
| | |
| = note: type of `self` must be `Self` or a type that dereferences to it |
| = help: consider changing to `self`, `&self`, `&mut self`, `self: Box<Self>`, `self: Rc<Self>`, `self: Arc<Self>`, or `self: Pin<P>` (where P is one of the previous types except `Self`) |
| |
| error: aborting due to 2 previous errors |
| |
| Some errors have detailed explanations: E0038, E0307. |
| For more information about an error, try `rustc --explain E0038`. |
