| error[E0277]: the size for values of type `X` cannot be known at compilation time |
| --> $DIR/unsized-trait-impl-trait-arg.rs:8:17 |
| | |
| LL | impl<X: ?Sized> T2<X> for S4<X> { |
| | - ^^^^^ doesn't have a size known at compile-time |
| | | |
| | this type parameter needs to be `Sized` |
| | |
| note: required by a bound in `T2` |
| --> $DIR/unsized-trait-impl-trait-arg.rs:4:10 |
| | |
| LL | trait T2<Z> { |
| | ^ required by this bound in `T2` |
| help: consider removing the `?Sized` bound to make the type parameter `Sized` |
| | |
| LL - impl<X: ?Sized> T2<X> for S4<X> { |
| LL + impl<X> T2<X> for S4<X> { |
| | |
| help: consider relaxing the implicit `Sized` restriction |
| | |
| LL | trait T2<Z: ?Sized> { |
| | ++++++++ |
| |
| error[E0046]: not all trait items implemented, missing: `foo` |
| --> $DIR/unsized-trait-impl-trait-arg.rs:8:1 |
| | |
| LL | fn foo(&self, z: Z); |
| | -------------------- `foo` from trait |
| ... |
| LL | impl<X: ?Sized> T2<X> for S4<X> { |
| | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ missing `foo` in implementation |
| |
| error: aborting due to 2 previous errors |
| |
| Some errors have detailed explanations: E0046, E0277. |
| For more information about an error, try `rustc --explain E0046`. |