| //@ edition:2021 |
| |
| #![feature(rustc_attrs)] |
| |
| #[derive(Debug)] |
| struct Child { |
| c: String, |
| d: String, |
| } |
| |
| #[derive(Debug)] |
| struct Parent { |
| b: Child, |
| } |
| |
| fn main() { |
| let mut a = Parent { b: Child {c: String::new(), d: String::new()} }; |
| |
| let c = #[rustc_capture_analysis] |
| //~^ ERROR: attributes on expressions are experimental |
| //~| NOTE: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> |
| //~| NOTE: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date |
| || { |
| //~^ First Pass analysis includes: |
| //~| Min Capture analysis includes: |
| let _x = a.b; |
| //~^ NOTE: Capturing a[(0, 0)] -> ByValue |
| //~| NOTE: Min Capture a[(0, 0)] -> ByValue |
| println!("{:?}", a.b.c); |
| //~^ NOTE: Capturing a[(0, 0),(0, 0)] -> ImmBorrow |
| }; |
| } |