mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-27 09:14:20 +00:00
81 lines
3.7 KiB
Plaintext
81 lines
3.7 KiB
Plaintext
error[E0038]: the trait `Bar` cannot be made into an object
|
|
--> $DIR/object-safety-generics.rs:18:31
|
|
|
|
|
LL | fn make_bar<T:Bar>(t: &T) -> &dyn Bar {
|
|
| ^^^^^^^ `Bar` 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/object-safety-generics.rs:10:8
|
|
|
|
|
LL | trait Bar {
|
|
| --- this trait cannot be made into an object...
|
|
LL | fn bar<T>(&self, t: T);
|
|
| ^^^ ...because method `bar` has generic type parameters
|
|
= help: consider moving `bar` to another trait
|
|
|
|
error[E0038]: the trait `Bar` cannot be made into an object
|
|
--> $DIR/object-safety-generics.rs:25:40
|
|
|
|
|
LL | fn make_bar_explicit<T:Bar>(t: &T) -> &dyn Bar {
|
|
| ^^^^^^^ `Bar` 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/object-safety-generics.rs:10:8
|
|
|
|
|
LL | trait Bar {
|
|
| --- this trait cannot be made into an object...
|
|
LL | fn bar<T>(&self, t: T);
|
|
| ^^^ ...because method `bar` has generic type parameters
|
|
= help: consider moving `bar` to another trait
|
|
|
|
error[E0038]: the trait `Bar` cannot be made into an object
|
|
--> $DIR/object-safety-generics.rs:20:5
|
|
|
|
|
LL | t
|
|
| ^ `Bar` 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/object-safety-generics.rs:10:8
|
|
|
|
|
LL | trait Bar {
|
|
| --- this trait cannot be made into an object...
|
|
LL | fn bar<T>(&self, t: T);
|
|
| ^^^ ...because method `bar` has generic type parameters
|
|
= help: consider moving `bar` to another trait
|
|
= note: required for the cast from `&T` to `&dyn Bar`
|
|
|
|
error[E0038]: the trait `Bar` cannot be made into an object
|
|
--> $DIR/object-safety-generics.rs:27:10
|
|
|
|
|
LL | t as &dyn Bar
|
|
| ^^^^^^^^ `Bar` 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/object-safety-generics.rs:10:8
|
|
|
|
|
LL | trait Bar {
|
|
| --- this trait cannot be made into an object...
|
|
LL | fn bar<T>(&self, t: T);
|
|
| ^^^ ...because method `bar` has generic type parameters
|
|
= help: consider moving `bar` to another trait
|
|
|
|
error[E0038]: the trait `Bar` cannot be made into an object
|
|
--> $DIR/object-safety-generics.rs:27:5
|
|
|
|
|
LL | t as &dyn Bar
|
|
| ^ `Bar` 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/object-safety-generics.rs:10:8
|
|
|
|
|
LL | trait Bar {
|
|
| --- this trait cannot be made into an object...
|
|
LL | fn bar<T>(&self, t: T);
|
|
| ^^^ ...because method `bar` has generic type parameters
|
|
= help: consider moving `bar` to another trait
|
|
= note: required for the cast from `&T` to `&dyn Bar`
|
|
|
|
error: aborting due to 5 previous errors
|
|
|
|
For more information about this error, try `rustc --explain E0038`.
|