[rustc.git] / src / test / run-pass / issues / issue-11267.rs

// run-pass
// Tests that unary structs can be mutably borrowed.

struct Empty;

trait T<U> {
    fn next(&mut self) -> Option<U>;
}
impl T<isize> for Empty {
    fn next(&mut self) -> Option<isize> { None }
}

fn do_something_with(a : &mut dyn T<isize>) {
    println!("{:?}", a.next())
}

pub fn main() {
    do_something_with(&mut Empty);
}
Commit	Line	Data
b7449926	1	// run-pass
1a4d82fc JJ	2	// Tests that unary structs can be mutably borrowed.
	3
	4	struct Empty;
223e47cc	5
1a4d82fc JJ	6	trait T<U> {
	7	fn next(&mut self) -> Option<U>;
	8	}
c34b1796 AL	9	impl T<isize> for Empty {
c34b1796 AL	10	fn next(&mut self) -> Option<isize> { None }
223e47cc LB	11	}
223e47cc LB	12
dc9dc135	13	fn do_something_with(a : &mut dyn T<isize>) {
1a4d82fc	14	println!("{:?}", a.next())
223e47cc LB	15	}
	16
	17	pub fn main() {
1a4d82fc	18	do_something_with(&mut Empty);
223e47cc	19	}