blob: 70ccc87fc3e145596593e34055adaad5f5395252 (
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
|
#![feature(trait_upcasting)]
#![allow(incomplete_features)]
trait Foo<'a>: Bar<'a, 'a> {}
trait Bar<'a, 'b> {
fn get_b(&self) -> Option<&'a u32> {
None
}
}
fn test_correct(x: &dyn Foo<'static>) {
let _ = x as &dyn Bar<'static, 'static>;
}
fn test_wrong1<'a>(x: &dyn Foo<'static>, y: &'a u32) {
let _ = x as &dyn Bar<'static, 'a>; // Error
//~^ ERROR lifetime may not live long enough
}
fn test_wrong2<'a>(x: &dyn Foo<'static>, y: &'a u32) {
let _ = x as &dyn Bar<'a, 'static>; // Error
//~^ ERROR lifetime may not live long enough
}
fn test_wrong3<'a>(x: &dyn Foo<'a>) -> Option<&'static u32> {
let y = x as &dyn Bar<'_, '_>;
y.get_b() // ERROR
//~^ ERROR lifetime may not live long enough
}
fn test_wrong4<'a>(x: &dyn Foo<'a>) -> Option<&'static u32> {
<_ as Bar>::get_b(x) // ERROR
//~^ ERROR lifetime may not live long enough
}
fn test_wrong5<'a>(x: &dyn Foo<'a>) -> Option<&'static u32> {
<_ as Bar<'_, '_>>::get_b(x) // ERROR
//~^ ERROR lifetime may not live long enough
}
fn test_wrong6<'a>(x: &dyn Foo<'a>) -> Option<&'static u32> {
let y = x as &dyn Bar<'_, '_>;
y.get_b(); // ERROR
let z = y;
z.get_b() // ERROR
//~^ ERROR lifetime may not live long enough
}
fn main() {}
|
