| // run-pass | |
| #![feature(box_syntax)] | |
| pub fn main() { | |
| let mut a: Vec<Box<_>> = vec![box 10]; | |
| let b = a.clone(); | |
| assert_eq!(*a[0], 10); | |
| assert_eq!(*b[0], 10); | |
| // This should only modify the value in a, not b | |
| *a[0] = 20; | |
| assert_eq!(*a[0], 20); | |
| assert_eq!(*b[0], 10); | |
| } |