4 #![allow(unused_variables)]
6 #![feature(async_await)]
10 async fn a(n: u32, mut vec: A) {
14 async fn b(n: u32, ref mut vec: A) {
18 async fn c(ref vec: A) {
22 async fn d((a, mut b): (A, A)) {
26 async fn f((ref mut a, ref b): (A, A)) {}
28 async fn g(((ref a, ref mut b), (ref mut c, ref d)): ((A, A), (A, A))) {}