#![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//~| NOTE: see issue #15701 //~| NOTE: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date || { //~^ ERROR: First Pass analysis includes: //~| ERROR: Min Capture analysis includes: unsafe { u.value } //~^ NOTE: Capturing u[(0, 0)] -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(); }