//# run
main() {
    let x: u64;
    let ref: &u64;
label b0:
    x = 5;
    jump_if_false (true) b2;
label b1:
    ref = &x;
label b2:
    // cannot use reference as it was not assigned in all control flow paths
    assert(*move(ref) == 5, 42);
    return;
}