rust/src/test/ui/async-await/issues/issue-58885.rs

// build-pass (FIXME(62277): could be check-pass?)
// edition:2018

struct Xyz {
    a: u64,
}

trait Foo {}

impl Xyz {
    async fn do_sth<'a>(
        &'a self, foo: &'a dyn Foo
    ) -> bool
    {
        true
    }
}

fn main() {}
Migrate compile-pass annotations to build-pass 2019-07-03 06:30:28 +09:00			`// build-pass (FIXME(62277): could be check-pass?)`
Refactor async fn return type lowering async fn now lowers directly to an existential type declaration rather than reusing the `impl Trait` return type lowering. As part of this, it lowers all argument-position elided lifetimes using the in-band-lifetimes machinery, creating fresh parameter names for each of them, using each lifetime parameter as a generic argument to the generated existential type. This doesn't currently successfully allow multiple argument-position elided lifetimes since `existential type` doesn't yet support multiple lifetimes where neither outlive the other. This requires a separate fix. 2019-03-13 17:42:23 -07:00			`// edition:2018`

			`struct Xyz {`
			`a: u64,`
			`}`

			`trait Foo {}`

			`impl Xyz {`
			`async fn do_sth<'a>(`
			`&'a self, foo: &'a dyn Foo`
			`) -> bool`
			`{`
			`true`
			`}`
			`}`

			`fn main() {}`