peek last ret

retpeek.c

int private(void) {
    return 42;
}

void public(void) {
    volatile int sec_ret;
    sec_ret = private();
    // Do not return sec_ret!!1one.
}

int main(void) {
    // peek last ret
    return ((int (*)(void))public)();
}

Someone said voids don't have a return value, bs!