35 lines
798 B
Rust
35 lines
798 B
Rust
|
// Ensure that we cannot move out of a reference to a fixed-size array
|
||
|
|
|
||
|
|
struct D { _x: u8 }
|
||
|
|
|
||
|
|
impl Drop for D { fn drop(&mut self) { } }
|
||
|
|
|
||
|
|
fn move_elem(a: &[D; 4]) -> D {
|
||
|
|
let [_, e, _, _] = *a; //~ ERROR cannot move
|
||
|
|
e
|
||
|
|
}
|
||
|
|
|
||
|
|
fn move_subarr(a: &[D; 4]) -> [D; 2] {
|
||
|
|
let [_, s @ .. , _] = *a; //~ ERROR cannot move
|
||
|
|
s
|
||
|
|
}
|
||
|
|
|
||
|
|
fn move_elem_mut(a: &mut [D; 4]) -> D {
|
||
|
|
let [_, e, _, _] = *a; //~ ERROR cannot move
|
||
|
|
e
|
||
|
|
}
|
||
|
|
|
||
|
|
fn move_subarr_mut(a: &mut [D; 4]) -> [D; 2] {
|
||
|
|
let [_, s @ .. , _] = *a; //~ ERROR cannot move
|
||
|
|
s
|
||
|
|
}
|
||
|
|
|
||
|
|
fn main() {
|
||
|
|
fn d() -> D { D { _x: 0 } }
|
||
|
|
|
||
|
|
move_elem(&[d(), d(), d(), d()]);
|
||
|
|
move_subarr(&[d(), d(), d(), d()]);
|
||
|
|
move_elem_mut(&mut [d(), d(), d(), d()]);
|
||
|
|
move_subarr_mut(&mut [d(), d(), d(), d()]);
|
||
|
|
}
|