rust/tests/ui/borrowck/borrowck-lend-flow-match.rs
2023-01-11 09:32:08 +00:00

19 lines
446 B
Rust

fn separate_arms() {
// Here both arms perform assignments, but only one is illegal.
let mut x = None;
match x {
None => {
// It is ok to reassign x here, because there is in
// fact no outstanding loan of x!
x = Some(0);
}
Some(ref r) => {
x = Some(1); //~ ERROR cannot assign to `x` because it is borrowed
drop(r);
}
}
}
fn main() {}