opj_pi_iterator_t *opj_pi_create_decode(opj_image_t *p_image,
                                        opj_cp_t *p_cp,
                                        OPJ_UINT32 p_tile_no)
{
    OPJ_UINT32 numcomps = p_image->numcomps;

    /* loop */
    OPJ_UINT32 pino;
    OPJ_UINT32 compno, resno;

    /* to store w, h, dx and dy fro all components and resolutions */
    OPJ_UINT32 * l_tmp_data;
    OPJ_UINT32 ** l_tmp_ptr;

    /* encoding prameters to set */
    OPJ_UINT32 l_max_res;
    OPJ_UINT32 l_max_prec;
    OPJ_INT32 l_tx0, l_tx1, l_ty0, l_ty1;
    OPJ_UINT32 l_dx_min, l_dy_min;
    OPJ_UINT32 l_bound;
    OPJ_UINT32 l_step_p, l_step_c, l_step_r, l_step_l ;
    OPJ_UINT32 l_data_stride;

    /* pointers */
    opj_pi_iterator_t *l_pi = 00;
    opj_tcp_t *l_tcp = 00;
    const opj_tccp_t *l_tccp = 00;
    opj_pi_comp_t *l_current_comp = 00;
    opj_image_comp_t * l_img_comp = 00;
    opj_pi_iterator_t * l_current_pi = 00;
    OPJ_UINT32 * l_encoding_value_ptr = 00;

    /* preconditions in debug */
    assert(p_cp != 00);
    assert(p_image != 00);
    assert(p_tile_no < p_cp->tw * p_cp->th);

    /* initializations */
    l_tcp = &p_cp->tcps[p_tile_no];
    l_bound = l_tcp->numpocs + 1;

    l_data_stride = 4 * OPJ_J2K_MAXRLVLS;
    l_tmp_data = (OPJ_UINT32*)opj_malloc(
                     l_data_stride * numcomps * sizeof(OPJ_UINT32));
    if
    (! l_tmp_data) {
        return 00;
    }
    l_tmp_ptr = (OPJ_UINT32**)opj_malloc(
                    numcomps * sizeof(OPJ_UINT32 *));
    if
    (! l_tmp_ptr) {
        opj_free(l_tmp_data);
        return 00;
    }

    /* memory allocation for pi */
    l_pi = opj_pi_create(p_image, p_cp, p_tile_no);
    if (!l_pi) {
        opj_free(l_tmp_data);
        opj_free(l_tmp_ptr);
        return 00;
    }

    l_encoding_value_ptr = l_tmp_data;
    /* update pointer array */
    for
    (compno = 0; compno < numcomps; ++compno) {
        l_tmp_ptr[compno] = l_encoding_value_ptr;
        l_encoding_value_ptr += l_data_stride;
    }
    /* get encoding parameters */
    opj_get_all_encoding_parameters(p_image, p_cp, p_tile_no, &l_tx0, &l_tx1,
                                    &l_ty0, &l_ty1, &l_dx_min, &l_dy_min, &l_max_prec, &l_max_res, l_tmp_ptr);

    /* step calculations */
    l_step_p = 1;
    l_step_c = l_max_prec * l_step_p;
    l_step_r = numcomps * l_step_c;
    l_step_l = l_max_res * l_step_r;

    /* set values for first packet iterator */
    l_current_pi = l_pi;

    /* memory allocation for include */
    /* prevent an integer overflow issue */
    /* 0 < l_tcp->numlayers < 65536 c.f. opj_j2k_read_cod in j2k.c */
    l_current_pi->include = 00;
    if (l_step_l <= (UINT_MAX / (l_tcp->numlayers + 1U))) {
        l_current_pi->include_size = (l_tcp->numlayers + 1U) * l_step_l;
        l_current_pi->include = (OPJ_INT16*) opj_calloc(
                                    l_current_pi->include_size, sizeof(OPJ_INT16));
    }

    if (!l_current_pi->include) {
        opj_free(l_tmp_data);
        opj_free(l_tmp_ptr);
        opj_pi_destroy(l_pi, l_bound);
        return 00;
    }

    /* special treatment for the first packet iterator */
    l_current_comp = l_current_pi->comps;
    l_img_comp = p_image->comps;
    l_tccp = l_tcp->tccps;

    l_current_pi->tx0 = l_tx0;
    l_current_pi->ty0 = l_ty0;
    l_current_pi->tx1 = l_tx1;
    l_current_pi->ty1 = l_ty1;

    /*l_current_pi->dx = l_img_comp->dx;*/
    /*l_current_pi->dy = l_img_comp->dy;*/

    l_current_pi->step_p = l_step_p;
    l_current_pi->step_c = l_step_c;
    l_current_pi->step_r = l_step_r;
    l_current_pi->step_l = l_step_l;

    /* allocation for components and number of components has already been calculated by opj_pi_create */
    for
    (compno = 0; compno < numcomps; ++compno) {
        opj_pi_resolution_t *l_res = l_current_comp->resolutions;
        l_encoding_value_ptr = l_tmp_ptr[compno];

        l_current_comp->dx = l_img_comp->dx;
        l_current_comp->dy = l_img_comp->dy;
        /* resolutions have already been initialized */
        for
        (resno = 0; resno < l_current_comp->numresolutions; resno++) {
            l_res->pdx = *(l_encoding_value_ptr++);
            l_res->pdy = *(l_encoding_value_ptr++);
            l_res->pw =  *(l_encoding_value_ptr++);
            l_res->ph =  *(l_encoding_value_ptr++);
            ++l_res;
        }
        ++l_current_comp;
        ++l_img_comp;
        ++l_tccp;
    }
    ++l_current_pi;

    for (pino = 1 ; pino < l_bound ; ++pino) {
        l_current_comp = l_current_pi->comps;
        l_img_comp = p_image->comps;
        l_tccp = l_tcp->tccps;

        l_current_pi->tx0 = l_tx0;
        l_current_pi->ty0 = l_ty0;
        l_current_pi->tx1 = l_tx1;
        l_current_pi->ty1 = l_ty1;
        /*l_current_pi->dx = l_dx_min;*/
        /*l_current_pi->dy = l_dy_min;*/
        l_current_pi->step_p = l_step_p;
        l_current_pi->step_c = l_step_c;
        l_current_pi->step_r = l_step_r;
        l_current_pi->step_l = l_step_l;

        /* allocation for components and number of components has already been calculated by opj_pi_create */
        for
        (compno = 0; compno < numcomps; ++compno) {
            opj_pi_resolution_t *l_res = l_current_comp->resolutions;
            l_encoding_value_ptr = l_tmp_ptr[compno];

            l_current_comp->dx = l_img_comp->dx;
            l_current_comp->dy = l_img_comp->dy;
            /* resolutions have already been initialized */
            for
            (resno = 0; resno < l_current_comp->numresolutions; resno++) {
                l_res->pdx = *(l_encoding_value_ptr++);
                l_res->pdy = *(l_encoding_value_ptr++);
                l_res->pw =  *(l_encoding_value_ptr++);
                l_res->ph =  *(l_encoding_value_ptr++);
                ++l_res;
            }
            ++l_current_comp;
            ++l_img_comp;
            ++l_tccp;
        }
        /* special treatment*/
        l_current_pi->include = (l_current_pi - 1)->include;
        l_current_pi->include_size = (l_current_pi - 1)->include_size;
        ++l_current_pi;
    }
    opj_free(l_tmp_data);
    l_tmp_data = 00;
    opj_free(l_tmp_ptr);
    l_tmp_ptr = 00;
    if
    (l_tcp->POC) {
        opj_pi_update_decode_poc(l_pi, l_tcp, l_max_prec, l_max_res);
    } else {
        opj_pi_update_decode_not_poc(l_pi, l_tcp, l_max_prec, l_max_res);
    }
    return l_pi;
}

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.