WNOWAIT
options |= WNOWAIT;
if ((options & WNOWAIT) == 0) {
if ((options & WNOWAIT) == 0) {
if (options & WNOWAIT) {
#define WALLOPTS (WNOHANG|WALTSIG|WALLSIG|WNOWAIT|WNOZOMBIE|WSELECTOPTS)
WNOWAIT, /* First in order to exclude it easily */
WNOWAIT,