rust/src/test/run-pass/task-spawn-move-and-copy.rs
2012-10-04 16:48:57 -07:00

27 lines
673 B
Rust

fn main() {
let p = comm::Port::<uint>();
let ch = comm::Chan(&p);
let x = ~1;
let x_in_parent = ptr::addr_of(&(*x)) as uint;
let y = ~2;
let y_in_parent = ptr::addr_of(&(*y)) as uint;
task::spawn(fn~(copy ch, copy y, move x) {
let x_in_child = ptr::addr_of(&(*x)) as uint;
comm::send(ch, x_in_child);
let y_in_child = ptr::addr_of(&(*y)) as uint;
comm::send(ch, y_in_child);
});
// Ensure last-use analysis doesn't move y to child.
let _q = y;
let x_in_child = comm::recv(p);
assert x_in_parent == x_in_child;
let y_in_child = comm::recv(p);
assert y_in_parent != y_in_child;
}