2 #![allow(unused_variables)]
3 // pretty-expanded FIXME #23616
5 use std::collections::HashMap;
7 fn copy<T: Copy>(&x: &T) -> T {
12 let arr = [(1, 1), (2, 2), (3, 3)];
14 let v1: Vec<&_> = arr.iter().collect();
15 let v2: Vec<_> = arr.iter().map(copy).collect();
17 let m1: HashMap<_, _> = arr.iter().map(copy).collect();
18 let m2: HashMap<isize, _> = arr.iter().map(copy).collect();
19 let m3: HashMap<_, usize> = arr.iter().map(copy).collect();