blob: 237bbc567151505a0507b721da2a1563d12e6979 (
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
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
error[E0038]: the trait `Foo` is not dyn compatible
--> $DIR/dispatch-dyn-incompatible-that-does-not-deref.rs:12:13
|
LL | fn method(self: &W) {}
| -- help: consider changing method `method`'s `self` parameter to be `&self`: `&Self`
...
LL | fn test(x: &dyn Foo) {
| ^^^^^^^ `Foo` 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/dispatch-dyn-incompatible-that-does-not-deref.rs:8:21
|
LL | trait Foo: Deref<Target = W> {
| --- this trait is not dyn compatible...
LL | fn method(self: &W) {}
| ^^ ...because method `method`'s `self` parameter cannot be dispatched on
error[E0307]: invalid `self` parameter type: `&W`
--> $DIR/dispatch-dyn-incompatible-that-does-not-deref.rs:8:21
|
LL | fn method(self: &W) {}
| ^^
|
= note: type of `self` must be `Self` or a type that dereferences to it
= help: consider changing to `self`, `&self`, `&mut self`, `self: Box<Self>`, `self: Rc<Self>`, `self: Arc<Self>`, or `self: Pin<P>` (where P is one of the previous types except `Self`)
error[E0038]: the trait `Foo` is not dyn compatible
--> $DIR/dispatch-dyn-incompatible-that-does-not-deref.rs:14:5
|
LL | fn method(self: &W) {}
| -- help: consider changing method `method`'s `self` parameter to be `&self`: `&Self`
...
LL | x.method();
| ^^^^^^^^^^ `Foo` 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/dispatch-dyn-incompatible-that-does-not-deref.rs:8:21
|
LL | trait Foo: Deref<Target = W> {
| --- this trait is not dyn compatible...
LL | fn method(self: &W) {}
| ^^ ...because method `method`'s `self` parameter cannot be dispatched on
error: aborting due to 3 previous errors
Some errors have detailed explanations: E0038, E0307.
For more information about an error, try `rustc --explain E0038`.
|
