1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
|
// run-pass
trait TraitWithSend: Send {}
trait IndirectTraitWithSend: TraitWithSend {}
// Check struct instantiation (Box<TraitWithSend> will only have Send if TraitWithSend has Send)
#[allow(dead_code)]
struct Blah { x: Box<dyn TraitWithSend> }
impl TraitWithSend for Blah {}
// Struct instantiation 2-levels deep
#[allow(dead_code)]
struct IndirectBlah { x: Box<dyn IndirectTraitWithSend> }
impl TraitWithSend for IndirectBlah {}
impl IndirectTraitWithSend for IndirectBlah {}
fn test_trait<T: Send + ?Sized>() { println!("got here!") }
fn main() {
test_trait::<dyn TraitWithSend>();
test_trait::<dyn IndirectTraitWithSend>();
}
|
