blob: 3ab9af21bc457405ac16c91f69421e519d05f1f4 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
error[E0038]: the trait `Foo` cannot be made into an object
--> $DIR/issue-38604.rs:14:13
|
LL | let _f: Box<dyn Foo> =
| ^^^^^^^^^^^^ `Foo` cannot be made into an object
|
note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
--> $DIR/issue-38604.rs:2:22
|
LL | trait Foo where u32: Q<Self> {
| --- ^^^^^^^ ...because it uses `Self` as a type parameter
| |
| this trait cannot be made into an object...
= help: only type `()` implements the trait, consider using it directly instead
error[E0038]: the trait `Foo` cannot be made into an object
--> $DIR/issue-38604.rs:15:9
|
LL | Box::new(());
| ^^^^^^^^^^^^ `Foo` cannot be made into an object
|
note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
--> $DIR/issue-38604.rs:2:22
|
LL | trait Foo where u32: Q<Self> {
| --- ^^^^^^^ ...because it uses `Self` as a type parameter
| |
| this trait cannot be made into an object...
= help: only type `()` implements the trait, consider using it directly instead
= note: required for the cast from `Box<()>` to `Box<dyn Foo>`
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0038`.
|
