blob: 80d815379bec2fa7b272fbc17bcda278ddf2e601 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
// run-pass
#![allow(unused_must_use)]
// Test that we are able to reinitialize box with moved referent
static mut ORDER: [usize; 3] = [0, 0, 0];
static mut INDEX: usize = 0;
struct Dropee (usize);
impl Drop for Dropee {
fn drop(&mut self) {
unsafe {
ORDER[INDEX] = self.0;
INDEX = INDEX + 1;
}
}
}
fn add_sentintel() {
unsafe {
ORDER[INDEX] = 2;
INDEX = INDEX + 1;
}
}
fn main() {
let mut x = Box::new(Dropee(1));
*x; // move out from `*x`
add_sentintel();
*x = Dropee(3); // re-initialize `*x`
{x}; // drop value
unsafe {
assert_eq!(ORDER, [1, 2, 3]);
}
}
|
