SHOW_SIGNALLED
mode = SHOW_SIGNALLED;
mode = SHOW_SIGNALLED | SHOW_NO_FREE;
|| (mode & SHOW_SIGNALLED)) {
if (st1 == -1 || !(mode & SHOW_SIGNALLED) || WIFEXITED(st1))
if (mode & SHOW_SIGNALLED && !(mode & SHOW_ISSIG)) {