static int update_init_section(struct playlist *pls, struct segment *seg)
{
    static const int max_init_section_size = 1024*1024;
    HLSContext *c = pls->parent->priv_data;
    int64_t sec_size;
    int64_t urlsize;
    int ret;

    if (seg->init_section == pls->cur_init_section)
        return 0;

    pls->cur_init_section = NULL;

    if (!seg->init_section)
        return 0;

    ret = open_input(c, pls, seg->init_section);
    if (ret < 0) {
        av_log(pls->parent, AV_LOG_WARNING,
               "Failed to open an initialization section in playlist %d\n",
               pls->index);
        return ret;
    }

    if (seg->init_section->size >= 0)
        sec_size = seg->init_section->size;
    else if ((urlsize = avio_size(pls->input)) >= 0)
        sec_size = urlsize;
    else
        sec_size = max_init_section_size;

    av_log(pls->parent, AV_LOG_DEBUG,
           "Downloading an initialization section of size %"PRId64"\n",
           sec_size);

    sec_size = FFMIN(sec_size, max_init_section_size);

    av_fast_malloc(&pls->init_sec_buf, &pls->init_sec_buf_size, sec_size);

    ret = read_from_url(pls, seg->init_section, pls->init_sec_buf,
                        pls->init_sec_buf_size, READ_COMPLETE);
    ff_format_io_close(pls->parent, &pls->input);

    if (ret < 0)
        return ret;

    pls->cur_init_section = seg->init_section;
    pls->init_sec_data_len = ret;
    pls->init_sec_buf_read_offset = 0;

    /* spec says audio elementary streams do not have media initialization
     * sections, so there should be no ID3 timestamps */
    pls->is_id3_timestamped = 0;

    return 0;
}

The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.