| error: defaults for type parameters are only allowed in `struct`, `enum`, `type`, or `trait` definitions |
| --> $DIR/parameter-defaults.rs:10:12 |
| | |
| LL | const NONE<T = ()>: Option<T> = None::<T>; |
| | ^^^^^^ |
| |
| error[E0282]: type annotations needed for `Option<_>` |
| --> $DIR/parameter-defaults.rs:13:9 |
| | |
| LL | let _ = NONE; |
| | ^ ---- type must be known at this point |
| | |
| help: consider giving this pattern a type, where the type for type parameter `T` is specified |
| | |
| LL | let _: Option<T> = NONE; |
| | +++++++++++ |
| |
| error: aborting due to 2 previous errors |
| |
| For more information about this error, try `rustc --explain E0282`. |
