b342f00179
Error now correctly checks whether the borrow that does not live long enough is being returned before annotating the error with the arguments and return type from the signature - as this would not be relevant if the borrow was not being returned.
22 lines
981 B
Plaintext
22 lines
981 B
Plaintext
error[E0597]: `v` does not live long enough
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--> $DIR/borrowed-universal-error-2.rs:16:5
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LL | fn foo<'a>(x: &'a (u32,)) -> &'a u32 {
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| -- -- also has lifetime `'a`
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| |
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| has lifetime `'a`
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LL | let v = 22;
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LL | &v
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| ^^ `v` would have to be valid for `'a`...
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LL | //~^ ERROR `v` does not live long enough [E0597]
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LL | }
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| - ...but `v` will be dropped here, when the function `foo` returns
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= help: use data from the highlighted arguments which match the `'a` lifetime of the return type
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= note: functions cannot return a borrow to data owned within the function's scope, functions can only return borrows to data passed as arguments
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= note: to learn more, visit <https://doc.rust-lang.org/book/second-edition/ch04-02-references-and-borrowing.html#dangling-references>
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error: aborting due to previous error
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For more information about this error, try `rustc --explain E0597`.
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