blob: 5377d5eeae2bcdd2f4af08a04f6d0382f41501f4 [file] [log] [blame]
//@ run-pass
//@ ignore-windows
//@ needs-threads
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();
}