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49 lines
2.0 KiB
Plaintext
49 lines
2.0 KiB
Plaintext
error[E0502]: cannot borrow `*map` as mutable because it is also borrowed as immutable
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--> $DIR/get_default.rs:21:17
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LL | fn ok(map: &mut Map) -> &String {
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| - let's call the lifetime of this reference `'1`
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LL | loop {
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LL | match map.get() {
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| --- immutable borrow occurs here
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LL | Some(v) => {
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LL | return v;
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| - returning this value requires that `*map` is borrowed for `'1`
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...
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LL | map.set(String::new()); // Ideally, this would not error.
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| ^^^^^^^^^^^^^^^^^^^^^^ mutable borrow occurs here
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error[E0502]: cannot borrow `*map` as mutable because it is also borrowed as immutable
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--> $DIR/get_default.rs:32:17
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LL | fn err(map: &mut Map) -> &String {
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| - let's call the lifetime of this reference `'1`
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LL | loop {
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LL | match map.get() {
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| --- immutable borrow occurs here
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LL | Some(v) => {
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LL | map.set(String::new()); // Both AST and MIR error here
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| ^^^^^^^^^^^^^^^^^^^^^^ mutable borrow occurs here
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LL |
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LL | return v;
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| - returning this value requires that `*map` is borrowed for `'1`
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error[E0502]: cannot borrow `*map` as mutable because it is also borrowed as immutable
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--> $DIR/get_default.rs:37:17
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LL | fn err(map: &mut Map) -> &String {
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| - let's call the lifetime of this reference `'1`
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LL | loop {
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LL | match map.get() {
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| --- immutable borrow occurs here
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...
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LL | return v;
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| - returning this value requires that `*map` is borrowed for `'1`
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...
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LL | map.set(String::new()); // Ideally, just AST would error here
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| ^^^^^^^^^^^^^^^^^^^^^^ mutable borrow occurs here
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error: aborting due to 3 previous errors
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For more information about this error, try `rustc --explain E0502`.
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