| error[E0308]: `match` arms have incompatible types |
| --> $DIR/wf-unsafe-trait-obj-match.rs:23:17 |
| | |
| LL | / match opt() { |
| LL | | Some(()) => &S, |
| | | -- this is found to be of type `&S` |
| LL | | None => &R, |
| | | ^^ expected struct `S`, found struct `R` |
| LL | | } |
| | |_____- `match` arms have incompatible types |
| | |
| = note: expected type `&S` |
| found reference `&R` |
| |
| error[E0038]: the trait `Trait` cannot be made into an object |
| --> $DIR/wf-unsafe-trait-obj-match.rs:26:21 |
| | |
| LL | Some(()) => &S, |
| | ^^ `Trait` 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/wf-unsafe-trait-obj-match.rs:6:14 |
| | |
| LL | trait Trait: Sized {} |
| | ----- ^^^^^ ...because it requires `Self: Sized` |
| | | |
| | this trait cannot be made into an object... |
| = note: required because of the requirements on the impl of `CoerceUnsized<&dyn Trait>` for `&S` |
| = note: required by cast to type `&dyn Trait` |
| |
| error[E0038]: the trait `Trait` cannot be made into an object |
| --> $DIR/wf-unsafe-trait-obj-match.rs:25:25 |
| | |
| LL | let t: &dyn Trait = match opt() { |
| | ^^^^^^^^^^^ `Trait` 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/wf-unsafe-trait-obj-match.rs:6:14 |
| | |
| LL | trait Trait: Sized {} |
| | ----- ^^^^^ ...because it requires `Self: Sized` |
| | | |
| | this trait cannot be made into an object... |
| = note: required because of the requirements on the impl of `CoerceUnsized<&dyn Trait>` for `&R` |
| = note: required by cast to type `&dyn Trait` |
| |
| error: aborting due to 3 previous errors |
| |
| Some errors have detailed explanations: E0038, E0308. |
| For more information about an error, try `rustc --explain E0038`. |