rust/tests/ui/impl-trait/dyn-trait-elided-two-inputs-ref-param.rs
2024-02-16 20:02:50 +00:00

24 lines
492 B
Rust

// Test that `impl Alpha<dyn Object>` resets the object-lifetime
// default to `'static`.
//
//@ check-pass
trait Alpha<Item: ?Sized> {
fn item(&self) -> Box<Item> {
panic!()
}
}
trait Object {}
impl<T> Alpha<dyn Object> for T {}
fn alpha(x: &str, y: &str) -> impl Alpha<dyn Object> { () }
fn is_static<T>(_: T) where T: 'static { }
fn bar(x: &str) -> &impl Alpha<dyn Object> { &() }
fn main() {
let s = format!("foo");
let r = bar(&s);
is_static(r.item());
}