rust/tests/ui/borrowck/issue-54499-field-mutation-of-moved-out.rs
2023-01-11 09:32:08 +00:00

43 lines
1.3 KiB
Rust

#![warn(unused)]
#[derive(Debug)]
struct S(i32);
type Tuple = (S, i32);
struct Tpair(S, i32);
struct Spair { x: S, y: i32 }
fn main() {
{
let t: Tuple = (S(0), 0);
drop(t);
t.0 = S(1);
//~^ ERROR assign to part of moved value: `t` [E0382]
//~| ERROR cannot assign to `t.0`, as `t` is not declared as mutable [E0594]
t.1 = 2;
//~^ ERROR cannot assign to `t.1`, as `t` is not declared as mutable [E0594]
println!("{:?} {:?}", t.0, t.1);
}
{
let u: Tpair = Tpair(S(0), 0);
drop(u);
u.0 = S(1);
//~^ ERROR assign to part of moved value: `u` [E0382]
//~| ERROR cannot assign to `u.0`, as `u` is not declared as mutable [E0594]
u.1 = 2;
//~^ ERROR cannot assign to `u.1`, as `u` is not declared as mutable [E0594]
println!("{:?} {:?}", u.0, u.1);
}
{
let v: Spair = Spair { x: S(0), y: 0 };
drop(v);
v.x = S(1);
//~^ ERROR assign to part of moved value: `v` [E0382]
//~| ERROR cannot assign to `v.x`, as `v` is not declared as mutable [E0594]
v.y = 2;
//~^ ERROR cannot assign to `v.y`, as `v` is not declared as mutable [E0594]
println!("{:?} {:?}", v.x, v.y);
}
}