| //@ edition:2021 |
| |
| #![feature(rustc_attrs)] |
| |
| fn main() { |
| let mut t = (10, 10); |
| |
| 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| //~| NOTE: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date |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: |
| println!("{}", t.0); |
| //~^ NOTE: Capturing t[(0, 0)] -> ImmBorrow |
| //~| NOTE: Min Capture t[(0, 0)] -> ImmBorrow |
| }; |
| |
| // `c` only captures t.0, therefore mutating t.1 is allowed. |
| let t1 = &mut t.1; |
| |
| c(); |
| *t1 = 20; |
| } |