#![feature(generators)] | |
use std::cell::Cell; | |
fn main() { | |
fn assert_sync<T: Sync>(_: T) {} | |
fn assert_send<T: Send>(_: T) {} | |
assert_sync(|| { | |
//~^ ERROR: E0277 | |
let a = Cell::new(2); | |
yield; | |
}); | |
let a = Cell::new(2); | |
assert_send(|| { | |
//~^ ERROR: E0277 | |
drop(&a); | |
yield; | |
}); | |
} |