//# run
main() {
    let x: u64;
label b0:
    x = 0;
label while:
    jump_if_false (true) while_cont;
label while_b0:
    jump_if_false (copy(x) >= 5) while_b2;
label while_b1:
    jump while_cont;
label while_b2:
    x = move(x) + 1;
    jump while;
label while_cont:
    assert(move(x) == 5, 42);
    return;
}