20 lines
342 B
Rust
20 lines
342 B
Rust
|
#![feature(custom_attribute, box_syntax)]
|
||
|
|
#![allow(dead_code, unused_attributes)]
|
||
|
|
|
||
|
|
#[miri_run]
|
||
|
|
fn rc_cell() -> i32 {
|
||
|
|
use std::rc::Rc;
|
||
|
|
use std::cell::Cell;
|
||
|
|
let r = Rc::new(Cell::new(42));
|
||
|
|
let x = r.get();
|
||
|
|
r.set(x + x);
|
||
|
|
r.get()
|
||
|
|
}
|
||
|
|
|
||
|
|
#[miri_run]
|
||
|
|
fn arc() -> i32 {
|
||
|
|
use std::sync::Arc;
|
||
|
|
let a = Arc::new(42);
|
||
|
|
*a
|
||
|
|
}
|