2486     if (pmod->vcv == NULL) {  in gretl_model_new_vcv()
2488 	pmod->vcv = malloc(nxpx * sizeof *pmod->vcv);  in gretl_model_new_vcv()
2489 	if (pmod->vcv == NULL) {  in gretl_model_new_vcv()
2494     if (pmod->vcv != NULL) {  in gretl_model_new_vcv()
2496 	    pmod->vcv[i] = 0.0;  in gretl_model_new_vcv()
2546     tmp = realloc(pmod->vcv, n * sizeof *tmp);  in gretl_model_write_vcv()
2550 	pmod->vcv = tmp;  in gretl_model_write_vcv()
2571 		pmod->vcv[idx++] = x;  in gretl_model_write_vcv()
2904 	    V[ijton(i, j, k)] = pmod->vcv[ijton(i, j, nc)];  in copy_vcv_subset()
2930     VMatrix *vcv;  in gretl_model_get_vcv()  local
2932     vcv = vmatrix_new();  in gretl_model_get_vcv()
2934     if (vcv == NULL) {  in gretl_model_get_vcv()
2950     vcv->names = strings_array_new(k);  in gretl_model_get_vcv()
2951     if (vcv->names == NULL) {  in gretl_model_get_vcv()
2952 	free(vcv);  in gretl_model_get_vcv()
2958 	vcv->names[i] = gretl_strdup(varname);  in gretl_model_get_vcv()
2959 	if (vcv->names[i] == NULL) {  in gretl_model_get_vcv()
2960 	    free_vmatrix(vcv);  in gretl_model_get_vcv()
2965     if (pmod->vcv == NULL && makevcv(pmod, pmod->sigma)) {  in gretl_model_get_vcv()
2966 	free_vmatrix(vcv);  in gretl_model_get_vcv()
2972 	vcv->vec = copy_vcv_subset(pmod);  in gretl_model_get_vcv()
2975 	vcv->vec = copyvec(pmod->vcv, k * (k + 1)  / 2);  in gretl_model_get_vcv()
2978     if (vcv->vec == NULL) {  in gretl_model_get_vcv()
2979 	free_vmatrix(vcv);  in gretl_model_get_vcv()
2983     vcv->ci = pmod->ci;  in gretl_model_get_vcv()
2984     vcv->dim = k;  in gretl_model_get_vcv()
2985     vcv->t1 = pmod->t1;  in gretl_model_get_vcv()
2986     vcv->t2 = pmod->t2;  in gretl_model_get_vcv()
2988     return vcv;  in gretl_model_get_vcv()
3007     if (pmod->vcv == NULL) {  in gretl_model_get_vcv_element()
3012 	return pmod->vcv[k];  in gretl_model_get_vcv_element()
3300     pmod->vcv = NULL;  in gretl_model_init_pointers()
3544 	    (void *) pmod->vcv, (void *) pmod->name,  in debug_print_model_info()
3605 	if (pmod->vcv != NULL) free(pmod->vcv);  in clear_model()
5161     if (src->vcv != NULL && (targ->vcv = copyvec(src->vcv, m)) == NULL) {  in copy_model()
5308     if (pmod->vcv != NULL) {  in gretl_model_serialize()
5309 	gretl_xml_put_double_array("vcv", pmod->vcv, m, prn);  in gretl_model_serialize()
5866 	    pmod->vcv = gretl_xml_get_double_array(cur, doc, &n, err);  in gretl_model_from_XML()
6053 	return pmod->ncoeff > 1 && (pmod->vcv != NULL || pmod->xpx != NULL);  in command_ok_for_model()
7463     if (pmod->vcv == NULL && makevcv(pmod, pmod->sigma)) {  in get_vcv_element()
7482 		ret = pmod->vcv[k];  in get_vcv_element()