[rustc.git] / src / test / ui / dyn-star / issue-102430.rs

// check-pass

#![feature(dyn_star)]
#![allow(incomplete_features)]

trait AddOne {
    fn add1(&mut self) -> usize;
}

impl AddOne for usize {
    fn add1(&mut self) -> usize {
        *self += 1;
        *self
    }
}

impl AddOne for &mut usize {
    fn add1(&mut self) -> usize {
        (*self).add1()
    }
}

fn add_one(mut i: dyn* AddOne + '_) -> usize {
    i.add1()
}

fn main() {
    let mut x = 42usize;
    let y = &mut x as (dyn* AddOne + '_);

    println!("{}", add_one(y));
}
Commit	Line	Data
487cf647 FG	1	// check-pass
	2
	3	#![feature(dyn_star)]
	4	#![allow(incomplete_features)]
	5
	6	trait AddOne {
	7	fn add1(&mut self) -> usize;
	8	}
	9
	10	impl AddOne for usize {
	11	fn add1(&mut self) -> usize {
	12	*self += 1;
	13	*self
	14	}
	15	}
	16
	17	impl AddOne for &mut usize {
	18	fn add1(&mut self) -> usize {
	19	(*self).add1()
	20	}
	21	}
	22
	23	fn add_one(mut i: dyn* AddOne + '_) -> usize {
	24	i.add1()
	25	}
	26
	27	fn main() {
	28	let mut x = 42usize;
	29	let y = &mut x as (dyn* AddOne + '_);
	30
	31	println!("{}", add_one(y));
	32	}