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error[E0502]: cannot borrow `*map` as mutable because it is also borrowed as immutable
--> $DIR/get_default.rs:21:17
|
LL | fn ok(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 | return v;
| - returning this value requires that `*map` is borrowed for `'1`
...
LL | map.set(String::new()); // Ideally, this would not error.
| ^^^^^^^^^^^^^^^^^^^^^^ mutable borrow occurs here
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[E0502]: cannot borrow `*map` as mutable because it is also borrowed as immutable
--> $DIR/get_default.rs:37:17
|
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 | return v;
| - returning this value requires that `*map` is borrowed for `'1`
...
LL | map.set(String::new()); // Ideally, just AST would error here
| ^^^^^^^^^^^^^^^^^^^^^^ mutable borrow occurs here
error: aborting due to 3 previous errors
For more information about this error, try `rustc --explain E0502`.
|
