| error[E0746]: return type cannot have an unboxed trait object |
| --> $DIR/E0746.rs:8:13 |
| | |
| LL | fn foo() -> dyn Trait { Struct } |
| | ^^^^^^^^^ doesn't have a size known at compile-time |
| | |
| help: consider returning an `impl Trait` instead of a `dyn Trait` |
| | |
| LL | fn foo() -> impl Trait { Struct } |
| | ~~~~ |
| help: alternatively, box the return type, and wrap all of the returned values in `Box::new` |
| | |
| LL | fn foo() -> Box<dyn Trait> { Box::new(Struct) } |
| | ++++ + +++++++++ + |
| |
| error[E0746]: return type cannot have an unboxed trait object |
| --> $DIR/E0746.rs:11:13 |
| | |
| LL | fn bar() -> dyn Trait { |
| | ^^^^^^^^^ doesn't have a size known at compile-time |
| | |
| = help: if there were a single returned type, you could use `impl Trait` instead |
| help: box the return type, and wrap all of the returned values in `Box::new` |
| | |
| LL ~ fn bar() -> Box<dyn Trait> { |
| LL | if true { |
| LL ~ return Box::new(0); |
| LL | } |
| LL ~ Box::new(42) |
| | |
| |
| error: aborting due to 2 previous errors |
| |
| For more information about this error, try `rustc --explain E0746`. |
