47 lines
843 B
Rust
47 lines
843 B
Rust
|
//@ check-pass
|
||
|
|
//@ known-bug: #49682
|
||
|
|
//@ edition:2021
|
||
|
|
|
||
|
|
// Should fail. Keeping references to thread local statics can result in a
|
||
|
|
// use-after-free.
|
||
|
|
|
||
|
|
#![feature(thread_local)]
|
||
|
|
|
||
|
|
use std::sync::atomic::{AtomicUsize, Ordering};
|
||
|
|
use std::thread;
|
||
|
|
|
||
|
|
#[allow(dead_code)]
|
||
|
|
#[thread_local]
|
||
|
|
static FOO: AtomicUsize = AtomicUsize::new(0);
|
||
|
|
|
||
|
|
#[allow(dead_code)]
|
||
|
|
async fn bar() {}
|
||
|
|
|
||
|
|
#[allow(dead_code)]
|
||
|
|
async fn foo() {
|
||
|
|
let r = &FOO;
|
||
|
|
bar().await;
|
||
|
|
r.load(Ordering::SeqCst);
|
||
|
|
}
|
||
|
|
|
||
|
|
fn main() {
|
||
|
|
// &FOO = 0x7fd1e9cbf6d0
|
||
|
|
_ = thread::spawn(|| {
|
||
|
|
let g = foo();
|
||
|
|
println!("&FOO = {:p}", &FOO);
|
||
|
|
g
|
||
|
|
})
|
||
|
|
.join()
|
||
|
|
.unwrap();
|
||
|
|
|
||
|
|
// &FOO = 0x7fd1e9cc0f50
|
||
|
|
println!("&FOO = {:p}", &FOO);
|
||
|
|
|
||
|
|
// &FOO = 0x7fd1e9cbf6d0
|
||
|
|
thread::spawn(move || {
|
||
|
|
println!("&FOO = {:p}", &FOO);
|
||
|
|
})
|
||
|
|
.join()
|
||
|
|
.unwrap();
|
||
|
|
}
|