| #![feature(rustc_attrs)] |
| |
| // edition:2021 |
| |
| // Test that any precise capture on a union is truncated because it's unsafe to do so. |
| |
| union Union { |
| value: u64, |
| } |
| |
| fn main() { |
| let u = Union { value: 42 }; |
| |
| 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| //~| NOTE: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date |
| || { |
| //~^ ERROR: First Pass analysis includes: |
| //~| ERROR: Min Capture analysis includes: |
| unsafe { u.value } |
| //~^ NOTE: Capturing u[(0, 0)] -> ImmBorrow |
| //~| NOTE: Min Capture u[] -> ImmBorrow |
| }; |
| |
| c(); |
| } |