use std::rc::Rc;
use std::cell::Cell;

#[derive(Debug)]
struct NonCopyBool(bool);

fn main() {
    let flag = Rc::new(Cell::new(NonCopyBool(false)));

    let clone = flag.clone();
    let otherclone = flag.clone();

    let c1 = move || {
        *(*clone).get_mut() = NonCopyBool(true);
    };

    let c2 = move || println!("{:?}", otherclone.replace(NonCopyBool(false)));

    c1();
    c2();
}

/*

fn main() {
    let mut flag = NonCopyBool(false);

    let mut ptr = &mut flag as *mut NonCopyBool;

    let mut c1 = || { unsafe { *ptr = NonCopyBool(true)} };

    let mut c2 = || {println!("{:?}", flag);};

    c1();
    c2();

}
*/