mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-28 09:36:05 +01:00
52 lines
2.6 KiB
Plaintext
52 lines
2.6 KiB
Plaintext
error[E0038]: the trait `Trait` cannot be made into an object
|
|
--> $DIR/wf-convert-dyn-incompat-trait-obj-box.rs:16:33
|
|
|
|
|
LL | let t_box: Box<dyn Trait> = Box::new(S);
|
|
| ^^^^^^^^^^^ `Trait` 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/wf-convert-dyn-incompat-trait-obj-box.rs:6:14
|
|
|
|
|
LL | trait Trait: Sized {}
|
|
| ----- ^^^^^ ...because it requires `Self: Sized`
|
|
| |
|
|
| this trait cannot be made into an object...
|
|
= help: only type `S` implements the trait, consider using it directly instead
|
|
= note: required for the cast from `Box<S>` to `Box<dyn Trait>`
|
|
|
|
error[E0038]: the trait `Trait` cannot be made into an object
|
|
--> $DIR/wf-convert-dyn-incompat-trait-obj-box.rs:17:15
|
|
|
|
|
LL | takes_box(Box::new(S));
|
|
| ^^^^^^^^^^^ `Trait` 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/wf-convert-dyn-incompat-trait-obj-box.rs:6:14
|
|
|
|
|
LL | trait Trait: Sized {}
|
|
| ----- ^^^^^ ...because it requires `Self: Sized`
|
|
| |
|
|
| this trait cannot be made into an object...
|
|
= help: only type `S` implements the trait, consider using it directly instead
|
|
= note: required for the cast from `Box<S>` to `Box<(dyn Trait + 'static)>`
|
|
|
|
error[E0038]: the trait `Trait` cannot be made into an object
|
|
--> $DIR/wf-convert-dyn-incompat-trait-obj-box.rs:15:5
|
|
|
|
|
LL | Box::new(S) as Box<dyn Trait>;
|
|
| ^^^^^^^^^^^ `Trait` 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/wf-convert-dyn-incompat-trait-obj-box.rs:6:14
|
|
|
|
|
LL | trait Trait: Sized {}
|
|
| ----- ^^^^^ ...because it requires `Self: Sized`
|
|
| |
|
|
| this trait cannot be made into an object...
|
|
= help: only type `S` implements the trait, consider using it directly instead
|
|
= note: required for the cast from `Box<S>` to `Box<dyn Trait>`
|
|
|
|
error: aborting due to 3 previous errors
|
|
|
|
For more information about this error, try `rustc --explain E0038`.
|