...
waitpid(24613, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0) = 24613
rt_sigaction(SIGINT, {SIG_DFL}, NULL, 8) = 0
rt_sigaction(SIGQUIT, {SIG_DFL}, NULL, 8) = 0
read(3, "", 4)                          = 0
close(3)                                = 0
exit_group(0)                           = ?