mirror of
https://github.com/rust-lang/rust.git
synced 2024-12-01 03:03:40 +00:00
26 lines
1.0 KiB
Plaintext
26 lines
1.0 KiB
Plaintext
error[E0038]: the trait `Foo` cannot be made into an object
|
|
--> $DIR/object-safety-no-static.rs:12:22
|
|
|
|
|
LL | fn diverges() -> Box<dyn Foo> {
|
|
| ^^^^^^^ `Foo` cannot be made into an object
|
|
|
|
|
note: for a trait to be "object safe" 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/object-safety-no-static.rs:9:8
|
|
|
|
|
LL | trait Foo {
|
|
| --- this trait cannot be made into an object...
|
|
LL | fn foo() {}
|
|
| ^^^ ...because associated function `foo` has no `self` parameter
|
|
help: consider turning `foo` into a method by giving it a `&self` argument
|
|
|
|
|
LL | fn foo(&self) {}
|
|
| +++++
|
|
help: alternatively, consider constraining `foo` so it does not apply to trait objects
|
|
|
|
|
LL | fn foo() where Self: Sized {}
|
|
| +++++++++++++++++
|
|
|
|
error: aborting due to previous error
|
|
|
|
For more information about this error, try `rustc --explain E0038`.
|