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
|
//@ check-pass
#![feature(inherent_associated_types)]
#![allow(incomplete_features)]
// Check that inherent associated types are dispatched on the concrete Self type.
struct Select<T>(T);
impl Select<u8> {
type Projection = ();
}
impl Select<String> {
type Projection = bool;
}
struct Choose<T>(T);
struct NonCopy;
impl<T: Copy> Choose<T> {
type Result = Vec<T>;
}
impl Choose<NonCopy> {
type Result = ();
}
fn main() {
let _: Select<String>::Projection = false;
let _: Select<u8>::Projection = ();
let _: Choose<NonCopy>::Result = ();
let _: Choose<&str>::Result = vec!["…"]; // regression test for issue #108957
}
// Test if we use the correct `ParamEnv` when proving obligations.
pub fn parameterized<T: Copy>(x: T) {
let _: Choose<T>::Result = vec![x];
}
|
