rust/tests/ui/closures/2229_closure_analysis/multilevel-path-2.rs

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// edition:2021
#![feature(rustc_attrs)]
#![allow(unused)]
struct Point {
x: i32,
y: i32,
}
struct Wrapper {
p: Point,
}
fn main() {
let mut w = Wrapper { p: Point { x: 10, y: 10 } };
let c = #[rustc_capture_analysis]
//~^ ERROR: attributes on expressions are experimental
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//~| NOTE: see issue #15701 <https://github.com/rust-lang/rust/issues/15701>
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//~| NOTE: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
|| {
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//~^ ERROR: First Pass analysis includes:
//~| ERROR: Min Capture analysis includes:
println!("{}", w.p.x);
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//~^ NOTE: Capturing w[(0, 0),(0, 0)] -> ImmBorrow
//~| NOTE: Min Capture w[(0, 0),(0, 0)] -> ImmBorrow
};
// `c` only captures `w.p.x`, therefore it's safe to mutate `w.p.y`.
let py = &mut w.p.y;
c();
*py = 20
}