first_message
for (mp = first_message(current_thread.t_head); mp; mp = next_message(mp))
for (mp = first_message(current_thread.t_head); mp; mp = next_message(mp)) {
for (mp = first_message(mp); mp; mp = mp->m_flink) {
for (mp = first_message(tp->t_head); mp; mp = next_message(mp))
for (mp = first_message(tp->t_head); mp; mp = next_message(mp))
for (mp = first_message(current_thread.t_head);