REAPER_PIDINFO_CHILD
pip->pi_flags |= REAPER_PIDINFO_CHILD;
ATF_CHECK_EQ(REAPER_PIDINFO_VALID | REAPER_PIDINFO_CHILD,
info[0].pi_flags & (REAPER_PIDINFO_VALID | REAPER_PIDINFO_CHILD));
ATF_CHECK_EQ(REAPER_PIDINFO_CHILD,
info[childidx].pi_flags & REAPER_PIDINFO_CHILD);
ATF_CHECK_EQ(0, info[childidx ^ 1].pi_flags & REAPER_PIDINFO_CHILD);
ATF_CHECK_EQ(REAPER_PIDINFO_CHILD,
info[0].pi_flags & REAPER_PIDINFO_CHILD);
ATF_CHECK_EQ(REAPER_PIDINFO_CHILD,
info[0].pi_flags & REAPER_PIDINFO_CHILD);