WALLSIG
options |= WALLSIG;
options |= WALLSIG;
if (((options & WALLSIG) == 0) &&
#define __WALL WALLSIG
#define WALLOPTS (WNOHANG|WALTSIG|WALLSIG|WNOWAIT|WNOZOMBIE|WSELECTOPTS)
(wpid = TWAIT_GENERIC(child2, &status, WALLSIG), child2);
(wpid = TWAIT_GENERIC(child2, &status, WALLSIG), child2);
(wpid = TWAIT_GENERIC(child2, &status, WALLSIG), child2);
WALLSIG,
int rpid = waitpid(pid, &status, WALLSIG);