MQ_UNLINKED
mq->mq_attrib.mq_flags |= MQ_UNLINKED;
destroy = (mq->mq_attrib.mq_flags & MQ_UNLINKED) != 0;
CTASSERT((O_MASK & (MQ_UNLINKED | MQ_RECEIVE)) == 0);
if (error || (mqattr->mq_flags & MQ_UNLINKED)) {
if (error || (mqattr->mq_flags & MQ_UNLINKED)) {