2a3969a3f7
This gives at least some explanation for why a borrow is expected to last for a certain free region. Also: * Reports E0373: "closure may outlive the current function" with NLL. * Special cases the case of returning a reference to (or value referencing) a local variable or temporary (E0515). * Special case assigning a reference to a local variable in a closure to a captured variable.
44 lines
1.8 KiB
Plaintext
44 lines
1.8 KiB
Plaintext
error[E0713]: borrow may still be in use when destructor runs
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--> $DIR/issue-52059-report-when-borrow-and-drop-conflict.rs:14:5
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LL | fn finish_1(s: S) -> &mut String {
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| - has type `S<'1>`
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LL | s.url
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| ^^^^^ returning this value requires that `*s.url` is borrowed for `'1`
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LL | }
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| - here, drop of `s` needs exclusive access to `*s.url`, because the type `S<'_>` implements the `Drop` trait
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error[E0713]: borrow may still be in use when destructor runs
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--> $DIR/issue-52059-report-when-borrow-and-drop-conflict.rs:19:13
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LL | fn finish_2(s: S) -> &mut String {
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| - has type `S<'1>`
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LL | let p = &mut *s.url; p
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| ^^^^^^^^^^^ - returning this value requires that `*s.url` is borrowed for `'1`
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LL | }
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| - here, drop of `s` needs exclusive access to `*s.url`, because the type `S<'_>` implements the `Drop` trait
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error[E0713]: borrow may still be in use when destructor runs
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--> $DIR/issue-52059-report-when-borrow-and-drop-conflict.rs:24:21
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LL | fn finish_3(s: S) -> &mut String {
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| - has type `S<'1>`
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LL | let p: &mut _ = s.url; p
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| ^^^^^ - returning this value requires that `*s.url` is borrowed for `'1`
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LL | }
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| - here, drop of `s` needs exclusive access to `*s.url`, because the type `S<'_>` implements the `Drop` trait
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error[E0509]: cannot move out of type `S<'_>`, which implements the `Drop` trait
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--> $DIR/issue-52059-report-when-borrow-and-drop-conflict.rs:29:13
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LL | let p = s.url; p
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| ^^^^^
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| |
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| cannot move out of here
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| help: consider borrowing here: `&s.url`
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error: aborting due to 4 previous errors
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Some errors occurred: E0509, E0713.
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For more information about an error, try `rustc --explain E0509`.
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