mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-01 06:51:58 +00:00
19 lines
726 B
Plaintext
19 lines
726 B
Plaintext
error[E0502]: cannot borrow `*map` as mutable because it is also borrowed as immutable
|
|
--> $DIR/get_default.rs:32:17
|
|
|
|
|
LL | fn err(map: &mut Map) -> &String {
|
|
| - let's call the lifetime of this reference `'1`
|
|
LL | loop {
|
|
LL | match map.get() {
|
|
| --- immutable borrow occurs here
|
|
LL | Some(v) => {
|
|
LL | map.set(String::new()); // Both AST and MIR error here
|
|
| ^^^ mutable borrow occurs here
|
|
LL |
|
|
LL | return v;
|
|
| - returning this value requires that `*map` is borrowed for `'1`
|
|
|
|
error: aborting due to 1 previous error
|
|
|
|
For more information about this error, try `rustc --explain E0502`.
|