mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-01 23:12:02 +00:00
31 lines
569 B
Rust
31 lines
569 B
Rust
//@ run-pass
|
|
//@ ignore-windows
|
|
//@ ignore-emscripten no threads support
|
|
|
|
use std::cell::Cell;
|
|
use std::fmt;
|
|
use std::thread;
|
|
|
|
struct Foo(Cell<isize>);
|
|
|
|
impl fmt::Debug for Foo {
|
|
fn fmt(&self, _fmt: &mut fmt::Formatter) -> fmt::Result {
|
|
let Foo(ref f) = *self;
|
|
assert_eq!(f.get(), 0);
|
|
f.set(1);
|
|
Ok(())
|
|
}
|
|
}
|
|
|
|
pub fn main() {
|
|
thread::spawn(move || {
|
|
let mut f = Foo(Cell::new(0));
|
|
println!("{:?}", f);
|
|
let Foo(ref mut f) = f;
|
|
assert_eq!(f.get(), 1);
|
|
})
|
|
.join()
|
|
.ok()
|
|
.unwrap();
|
|
}
|