P_PID             223 maint/gnulib/lib/wait-process.c       if (waitid (P_PID, child, &info, WEXITED | (slave_process ? WNOWAIT : 0))
P_PID             256 maint/gnulib/lib/wait-process.c           if (waitid (P_PID, child, &info, WEXITED) < 0)