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