//# run
main() {
    let b: bool;
label b0:
    b = false;
label loop:
    jump_if_false (copy(b)) loop_b3;
label loop_b0:
    jump_if_false (copy(b)) loop_b2;
label loop_b1:
    jump loop;
label loop_b2:
    jump loop;
label loop_b3:
    jump loop_cont;
label loop_cont:
    return;
}