WAIT_ANY
return (INTERPOS_SYS(wait4, WAIT_ANY, istat, 0, NULL));
return (INTERPOS_SYS(wait4, WAIT_ANY, istat, options, rup));
if (args->pid == WAIT_ANY) {
if (pid == WAIT_ANY) {
error = kern_wait(td, WAIT_ANY, &status, 0, NULL);