| error[E0277]: the size for values of type `<Self as Deref>::Target` cannot be known at compilation time |
| --> $DIR/issue-42312.rs:4:15 |
| | |
| LL | fn baz(_: Self::Target) where Self: Deref {} |
| | ^^^^^^^^^^^^ doesn't have a size known at compile-time |
| | |
| = help: the trait `Sized` is not implemented for `<Self as Deref>::Target` |
| = help: unsized fn params are gated as an unstable feature |
| help: consider further restricting the associated type |
| | |
| LL | fn baz(_: Self::Target) where Self: Deref, <Self as Deref>::Target: Sized {} |
| | ++++++++++++++++++++++++++++++++ |
| help: function arguments must have a statically known size, borrowed types always have a known size |
| | |
| LL | fn baz(_: &Self::Target) where Self: Deref {} |
| | + |
| |
| error[E0277]: the size for values of type `(dyn ToString + 'static)` cannot be known at compilation time |
| --> $DIR/issue-42312.rs:8:13 |
| | |
| LL | pub fn f(_: dyn ToString) {} |
| | ^^^^^^^^^^^^ doesn't have a size known at compile-time |
| | |
| = help: the trait `Sized` is not implemented for `(dyn ToString + 'static)` |
| = help: unsized fn params are gated as an unstable feature |
| help: you can use `impl Trait` as the argument type |
| | |
| LL | pub fn f(_: impl ToString) {} |
| | ~~~~ |
| help: function arguments must have a statically known size, borrowed types always have a known size |
| | |
| LL | pub fn f(_: &dyn ToString) {} |
| | + |
| |
| error: aborting due to 2 previous errors |
| |
| For more information about this error, try `rustc --explain E0277`. |
