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//@ run-pass
struct X {
a: isize
}
trait Changer : Sized {
fn change(mut self) -> Self {
self.set_to(55);
self
}
fn change_again(mut self: Box<Self>) -> Box<Self> {
self.set_to(45);
self
}
fn set_to(&mut self, a: isize);
}
impl Changer for X {
fn set_to(&mut self, a: isize) {
self.a = a;
}
}
pub fn main() {
let x = X { a: 32 };
let new_x = x.change();
assert_eq!(new_x.a, 55);
let x: Box<_> = Box::new(new_x);
let new_x = x.change_again();
assert_eq!(new_x.a, 45);
}
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