tests/ui/union/union-const-eval.rs

// check-pass
// revisions: mirunsafeck thirunsafeck
// [thirunsafeck]compile-flags: -Z thir-unsafeck

union U {
    a: usize,
    b: usize,
}

const C: U = U { a: 10 };

fn main() {
    let a: [u8; unsafe { C.a }];
    let b: [u8; unsafe { C.b }];
}