OPJ_BOOL opj_tcd_decode_tile(   opj_tcd_t *p_tcd,
                                OPJ_BYTE *p_src,
                                OPJ_UINT32 p_max_length,
                                OPJ_UINT32 p_tile_no,
                                opj_codestream_index_t *p_cstr_index
                                )
{
        OPJ_UINT32 l_data_read;
        p_tcd->tcd_tileno = p_tile_no;
        p_tcd->tcp = &(p_tcd->cp->tcps[p_tile_no]);

#ifdef TODO_MSD /* FIXME */
        /* INDEX >>  */
        if(p_cstr_info) {
                OPJ_UINT32 resno, compno, numprec = 0;
                for (compno = 0; compno < (OPJ_UINT32) p_cstr_info->numcomps; compno++) {
                        opj_tcp_t *tcp = &p_tcd->cp->tcps[0];
                        opj_tccp_t *tccp = &tcp->tccps[compno];
                        opj_tcd_tilecomp_t *tilec_idx = &p_tcd->tcd_image->tiles->comps[compno];
                        for (resno = 0; resno < tilec_idx->numresolutions; resno++) {
                                opj_tcd_resolution_t *res_idx = &tilec_idx->resolutions[resno];
                                p_cstr_info->tile[p_tile_no].pw[resno] = res_idx->pw;
                                p_cstr_info->tile[p_tile_no].ph[resno] = res_idx->ph;
                                numprec += res_idx->pw * res_idx->ph;
                                p_cstr_info->tile[p_tile_no].pdx[resno] = tccp->prcw[resno];
                                p_cstr_info->tile[p_tile_no].pdy[resno] = tccp->prch[resno];
                        }
                }
                p_cstr_info->tile[p_tile_no].packet = (opj_packet_info_t *) opj_malloc(p_cstr_info->numlayers * numprec * sizeof(opj_packet_info_t));
                p_cstr_info->packno = 0;
        }
        /* << INDEX */
#endif

        /*--------------TIER2------------------*/
        /* FIXME _ProfStart(PGROUP_T2); */
        l_data_read = 0;
        if (! opj_tcd_t2_decode(p_tcd, p_src, &l_data_read, p_max_length, p_cstr_index))
        {
                return OPJ_FALSE;
        }
        /* FIXME _ProfStop(PGROUP_T2); */

        /*------------------TIER1-----------------*/

        /* FIXME _ProfStart(PGROUP_T1); */
        if
                (! opj_tcd_t1_decode(p_tcd))
        {
                return OPJ_FALSE;
        }
        /* FIXME _ProfStop(PGROUP_T1); */

        /*----------------DWT---------------------*/

        /* FIXME _ProfStart(PGROUP_DWT); */
        if
                (! opj_tcd_dwt_decode(p_tcd))
        {
                return OPJ_FALSE;
        }
        /* FIXME _ProfStop(PGROUP_DWT); */

        /*----------------MCT-------------------*/
        /* FIXME _ProfStart(PGROUP_MCT); */
        if
                (! opj_tcd_mct_decode(p_tcd))
        {
                return OPJ_FALSE;
        }
        /* FIXME _ProfStop(PGROUP_MCT); */

        /* FIXME _ProfStart(PGROUP_DC_SHIFT); */
        if
                (! opj_tcd_dc_level_shift_decode(p_tcd))
        {
                return OPJ_FALSE;
        }
        /* FIXME _ProfStop(PGROUP_DC_SHIFT); */


        /*---------------TILE-------------------*/
        return OPJ_TRUE;
}

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.