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#![feature(type_alias_impl_trait)]
//@ check-pass
pub trait Trait {}
pub type TAIT = impl Trait;
pub struct Concrete;
impl Trait for Concrete {}
#[define_opaque(TAIT)]
pub fn tait() -> TAIT {
Concrete
}
trait OuterTrait {
type Item;
}
struct Dummy<T> {
t: T,
}
impl<T> OuterTrait for Dummy<T> {
type Item = T;
}
fn tait_and_impl_trait() -> impl OuterTrait<Item = (TAIT, impl Trait)> {
Dummy { t: (tait(), Concrete) }
}
fn tait_and_dyn_trait() -> impl OuterTrait<Item = (TAIT, Box<dyn Trait>)> {
let b: Box<dyn Trait> = Box::new(Concrete);
Dummy { t: (tait(), b) }
}
fn main() {}
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