rust/tests/ui/nll/polonius/location-insensitive-scopes-issue-117146.polonius.stderr, branch perf-tmp

reword note

2025-09-28T20:55:35+00:00

Point at lifetime requirement origin in more cases

2025-09-28T20:55:34+00:00

Point at fn bound that introduced lifetime obligation

2025-09-28T20:55:34+00:00

``` error[E0597]: `c` does not live long enough --> $DIR/without-precise-captures-we-are-powerless.rs:19:20 | LL | fn simple<'a>(x: &'a i32) { | -- lifetime `'a` defined here ... LL | let c = async move || { println!("{}", *x); }; | - binding `c` declared here LL | outlives::<'a>(c()); | ---------------^--- | | | | | borrowed value does not live long enough | argument requires that `c` is borrowed for `'a` LL | outlives::<'a>(call_once(c)); LL | } | - `c` dropped here while still borrowed | note: requirement that `c` is borrowed for `'a` introduced here --> $DIR/without-precise-captures-we-are-powerless.rs:7:33 | LL | fn outlives<'a>(_: impl Sized + 'a) {} | ^^ ``` When encountering a `ConstraintCategory::Predicate` in a funtion call, point at the `Span` for that `Predicate` to explain where the lifetime obligation originates from.

it's not a borrow checker limitation :<

2025-08-14T15:43:39+00:00

rework `add_placeholder_from_predicate_note`

2025-08-13T12:03:26+00:00

Modify `find_expr` from `Span` to better account for closures

2024-04-24T22:21:13+00:00

Start pointing to where bindings were declared when they are captured in closures: ``` error[E0597]: `x` does not live long enough --> $DIR/suggest-return-closure.rs:23:9 | LL | let x = String::new(); | - binding `x` declared here ... LL | |c| { | --- value captured here LL | x.push(c); | ^ borrowed value does not live long enough ... LL | } | -- borrow later used here | | | `x` dropped here while still borrowed ``` Suggest cloning in more cases involving closures: ``` error[E0507]: cannot move out of `foo` in pattern guard --> $DIR/issue-27282-move-ref-mut-into-guard.rs:11:19 | LL | if { (|| { let mut bar = foo; bar.take() })(); false } => {}, | ^^ --- move occurs because `foo` has type `&mut Option<&i32>`, which does not implement the `Copy` trait | | | `foo` is moved here | = note: variables bound in patterns cannot be moved from until after the end of the pattern guard help: consider cloning the value if the performance cost is acceptable | LL | if { (|| { let mut bar = foo.clone(); bar.take() })(); false } => {}, | ++++++++ ```

add test for issue 117146

2023-11-04T01:04:12+00:00