TA_FLAG_READONLY
if (((tc_a->ta->flags | tc_b->ta->flags) & TA_FLAG_READONLY) != 0) {
if ((tc->ta->flags & TA_FLAG_READONLY) != 0) {
if (ta->flags & TA_FLAG_READONLY)
if ((ta->flags & TA_FLAG_READONLY) == 0)
if ((ta->flags & TA_FLAG_READONLY) != 0) {
.flags = TA_FLAG_READONLY,