waitid
__weak_alias(waitid,_waitid)
waitid(idtype_t idtype, id_t id, siginfo_t *info, int flags)
int waitid(idtype_t, id_t, siginfo_t *, int);
waitid(P_PID,(a),NULL,(c)|WEXITED|WTRAPPED)
# define TWAIT_WAIT6TYPE(a,b,c,d,e,f) waitid((a),(b),(f),(d))
waitid(P_ALL, 0, NULL, o | TWAIT_OPTION) == -1);
ATF_TP_ADD_TC(tp, waitid);
ATF_TC(waitid);
ATF_TC_HEAD(waitid, tc)
ATF_TC_BODY(waitid, tc)
waitid(P_ALL, 0, NULL,
RL(waitid(P_ALL, 0, NULL, 0));