mirror of
https://github.com/rust-lang/rust
synced 2024-11-05 20:45:15 +00:00
29 lines
382 B
Rust
29 lines
382 B
Rust
//@ run-pass
|
|
#![allow(non_camel_case_types)]
|
|
|
|
use std::cell::Cell;
|
|
|
|
struct r<'a> {
|
|
b: &'a Cell<isize>,
|
|
}
|
|
|
|
impl<'a> Drop for r<'a> {
|
|
fn drop(&mut self) {
|
|
self.b.set(self.b.get() + 1);
|
|
}
|
|
}
|
|
|
|
fn r(b: &Cell<isize>) -> r {
|
|
r {
|
|
b: b
|
|
}
|
|
}
|
|
|
|
pub fn main() {
|
|
let b = &Cell::new(0);
|
|
{
|
|
let _p = Some(r(b));
|
|
}
|
|
|
|
assert_eq!(b.get(), 1);
|
|
}
|