mirror of
https://github.com/rust-lang/rust
synced 2024-09-05 16:57:03 +00:00
9de6b70bb6
When encoutnering a case like
```rust
//@ run-rustfix
use std::collections::HashMap;
fn main() {
let vs = vec![0, 0, 1, 1, 3, 4, 5, 6, 3, 3, 3];
let mut counts = HashMap::new();
for num in vs {
let count = counts.entry(num).or_insert(0);
*count += 1;
}
let _ = counts.iter().max_by_key(|(_, v)| v);
```
produce the following suggestion
```
error: lifetime may not live long enough
--> $DIR/return-value-lifetime-error.rs:13:47
|
LL | let _ = counts.iter().max_by_key(|(_, v)| v);
| ------- ^ returning this value requires that `'1` must outlive `'2`
| | |
| | return type of closure is &'2 &i32
| has type `&'1 (&i32, &i32)`
|
help: dereference the return value
|
LL | let _ = counts.iter().max_by_key(|(_, v)| **v);
| ++
```
Fix #50195.
17 lines
664 B
Plaintext
17 lines
664 B
Plaintext
error: lifetime may not live long enough
|
|
--> $DIR/return-value-lifetime-error.rs:13:47
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LL | let _ = counts.iter().max_by_key(|(_, v)| v);
|
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| ------- ^ returning this value requires that `'1` must outlive `'2`
|
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| | |
|
|
| | return type of closure is &'2 &i32
|
|
| has type `&'1 (&i32, &i32)`
|
|
|
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help: dereference the return value
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LL | let _ = counts.iter().max_by_key(|(_, v)| **v);
|
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| ++
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|
error: aborting due to 1 previous error
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|