/* Consume an unsigned 64 bit number from fd */
static inline int consume_byte(flb_pipefd_t fd)
{
    int ret;
    uint64_t val;

    /* We need to consume the byte */
    ret = flb_pipe_r(fd, &val, sizeof(val));

    /* ref: https://github.com/fluent/fluent-bit/pull/2463 */
// #if defined(__APPLE__) || __FreeBSD__ >= 12
    if (ret < 0) {
// #else
//     if (ret <= 0) {
// #endif
        flb_errno();
        return -1;
    }

    return 0;
}