blob: 8e44100177154d468c2b4a0b0c8c0b13e9aeae66 (
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
|
error[E0283]: type annotations needed
--> $DIR/auto-trait-selection.rs:15:16
|
LL | if false { is_trait(foo()) } else { Default::default() }
| ^^^^^^^^ ----- type must be known at this point
| |
| cannot infer type of the type parameter `U` declared on the function `is_trait`
|
note: multiple `impl`s satisfying `impl Sized: Trait<_>` found
--> $DIR/auto-trait-selection.rs:12:1
|
LL | impl<T: Send> Trait<u32> for T {}
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
LL | impl<T> Trait<i32> for T {}
| ^^^^^^^^^^^^^^^^^^^^^^^^
note: required by a bound in `is_trait`
--> $DIR/auto-trait-selection.rs:7:16
|
LL | fn is_trait<T: Trait<U>, U: Default>(_: T) -> U {
| ^^^^^^^^ required by this bound in `is_trait`
help: consider specifying the generic arguments
|
LL | if false { is_trait::<_, U>(foo()) } else { Default::default() }
| ++++++++
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0283`.
|
