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error[E0107]: missing generics for associated type `SuperTrait::SubType`
--> $DIR/issue-76535.rs:34:33
|
LL | let sub: Box<dyn SuperTrait<SubType = SubStruct>> = Box::new(SuperStruct::new(0));
| ^^^^^^^ expected 1 lifetime argument
|
note: associated type defined here, with 1 lifetime parameter: `'a`
--> $DIR/issue-76535.rs:4:10
|
LL | type SubType<'a>: SubTrait where Self: 'a;
| ^^^^^^^ --
help: add missing lifetime argument
|
LL | let sub: Box<dyn SuperTrait<SubType<'a> = SubStruct>> = Box::new(SuperStruct::new(0));
| ++++
error[E0038]: the trait `SuperTrait` is not dyn compatible
--> $DIR/issue-76535.rs:34:14
|
LL | let sub: Box<dyn SuperTrait<SubType = SubStruct>> = Box::new(SuperStruct::new(0));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `SuperTrait` is not dyn compatible
|
note: for a trait to be dyn compatible it needs to allow building a vtable
for more information, visit <https://doc.rust-lang.org/reference/items/traits.html#dyn-compatibility>
--> $DIR/issue-76535.rs:4:10
|
LL | pub trait SuperTrait {
| ---------- this trait is not dyn compatible...
LL | type SubType<'a>: SubTrait where Self: 'a;
| ^^^^^^^ ...because it contains the generic associated type `SubType`
= help: consider moving `SubType` to another trait
= help: only type `SuperStruct` implements `SuperTrait` within this crate; consider using it directly instead.
= note: `SuperTrait` may be implemented in other crates; if you want to support your users passing their own types here, you can't refer to a specific type
error[E0038]: the trait `SuperTrait` is not dyn compatible
--> $DIR/issue-76535.rs:34:57
|
LL | let sub: Box<dyn SuperTrait<SubType = SubStruct>> = Box::new(SuperStruct::new(0));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `SuperTrait` is not dyn compatible
|
note: for a trait to be dyn compatible it needs to allow building a vtable
for more information, visit <https://doc.rust-lang.org/reference/items/traits.html#dyn-compatibility>
--> $DIR/issue-76535.rs:4:10
|
LL | pub trait SuperTrait {
| ---------- this trait is not dyn compatible...
LL | type SubType<'a>: SubTrait where Self: 'a;
| ^^^^^^^ ...because it contains the generic associated type `SubType`
= help: consider moving `SubType` to another trait
= help: only type `SuperStruct` implements `SuperTrait` within this crate; consider using it directly instead.
= note: `SuperTrait` may be implemented in other crates; if you want to support your users passing their own types here, you can't refer to a specific type
= note: required for the cast from `Box<SuperStruct>` to `Box<dyn SuperTrait<SubType<'_> = SubStruct<'_>>>`
error: aborting due to 3 previous errors
Some errors have detailed explanations: E0038, E0107.
For more information about an error, try `rustc --explain E0038`.
|
