mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-27 17:24:06 +00:00
21 lines
415 B
Rust
21 lines
415 B
Rust
|
fn save_ref<'a>(refr: &'a i32, to: &mut [&'a i32]) {
|
||
|
|
for val in &mut *to {
|
||
|
|
*val = refr;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
fn main() {
|
||
|
|
let ref init = 0i32;
|
||
|
|
let ref mut refr = 1i32;
|
||
|
|
|
||
|
|
let mut out = [init];
|
||
|
|
|
||
|
|
save_ref(&*refr, &mut out);
|
||
|
|
|
||
|
|
// This shouldn't be allowed as `refr` is borrowed
|
||
|
|
*refr = 3; //~ ERROR cannot assign to `*refr` because it is borrowed
|
||
|
|
|
||
|
|
// Prints 3?!
|
||
|
|
println!("{:?}", out[0]);
|
||
|
|
}
|