1 #![warn(clone_on_ref_ptr)]
4 use std::collections::HashSet;
5 use std::collections::VecDeque;
6 use std::rc::{self, Rc};
7 use std::sync::{self, Arc};
11 impl SomeTrait for SomeImpl {}
18 vec![1].clone(); // ok, not a Copy type
19 Some(vec![1]).clone(); // ok, not a Copy type
23 fn clone_on_ref_ptr() {
24 let rc = Rc::new(true);
25 let arc = Arc::new(true);
27 let rcweak = Rc::downgrade(&rc);
28 let arc_weak = Arc::downgrade(&arc);
37 rc::Weak::clone(&rcweak);
40 sync::Weak::clone(&arc_weak);
42 let x = Arc::new(SomeImpl);
43 let _: Arc<SomeTrait> = x.clone();
46 fn clone_on_copy_generic<T: Copy>(t: T) {
52 fn clone_on_double_ref() {
55 let z: &Vec<_> = y.clone();
57 println!("{:p} {:p}",*y, z);
60 fn iter_clone_collect() {
62 let v2 : Vec<isize> = v.iter().cloned().collect();
63 let v3 : HashSet<isize> = v.iter().cloned().collect();
64 let v4 : VecDeque<isize> = v.iter().cloned().collect();