rust/tests/ui/regions/regions-copy-closure.rs
2024-02-16 20:02:50 +00:00

22 lines
384 B
Rust

//@ run-pass
#![allow(non_camel_case_types)]
struct closure_box<'a> {
cl: Box<dyn FnMut() + 'a>,
}
fn box_it<'a>(x: Box<dyn FnMut() + 'a>) -> closure_box<'a> {
closure_box {cl: x}
}
pub fn main() {
let mut i = 3;
assert_eq!(i, 3);
{
let cl = || i += 1;
let mut cl_box = box_it(Box::new(cl));
(cl_box.cl)();
}
assert_eq!(i, 4);
}