24 lines
441 B
Rust
24 lines
441 B
Rust
// Check that we if we get ahold of an object unsafe trait
|
|
// object with auto traits and lifetimes, we can downcast it
|
|
//
|
|
//@ check-pass
|
|
|
|
#![feature(object_safe_for_dispatch)]
|
|
|
|
trait Trait: Sized {}
|
|
|
|
fn downcast_auto(t: &(dyn Trait + Send)) -> &dyn Trait {
|
|
t
|
|
}
|
|
|
|
fn downcast_lifetime<'a, 'b, 't>(t: &'a (dyn Trait + 't))
|
|
-> &'b (dyn Trait + 't)
|
|
where
|
|
'a: 'b,
|
|
't: 'a + 'b,
|
|
{
|
|
t
|
|
}
|
|
|
|
fn main() {}
|