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#![feature(trait_alias)]
trait Foo = PartialEq<i32> + Send;
trait Bar = Foo + Sync;
trait I32Iterator = Iterator<Item = i32>;
pub fn main() {
let a: &dyn Bar = &123;
assert!(*a == 123);
let b = Box::new(456) as Box<dyn Foo>;
assert!(*b == 456);
let c: &mut dyn I32Iterator = &mut vec![123].into_iter();
assert_eq!(c.next(), Some(123));
}
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