blob: 12251509abd2d180a9701dbf8fd9e765a30f6f4c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
|
//@ check-pass
trait Foo<Args> {
type Output;
}
trait Bar<'a, T>: for<'s> Foo<&'s T, Output=bool> {
fn cb(&self) -> Box<dyn Bar<'a, T, Output=bool>>;
}
impl<'s> Foo<&'s ()> for () {
type Output = bool;
}
impl<'a> Bar<'a, ()> for () {
fn cb(&self) -> Box<dyn Bar<'a, (), Output=bool>> {
Box::new(*self)
}
}
fn main() {
let _t = ().cb();
}
|
