lib wait,wait2,wait3,wait4,waitpid
tst ok_wif sys/types.h sys/wait.h note{ posix wait macros ok }end compile{
int ifexited = WIFEXITED(0);
int exitstatus = WEXITSTATUS(0);
int ifsignaled = WIFSIGNALED(0);
int termsig = WTERMSIG(0);
int ifstopped = WIFSTOPPED(0);
int stopsig = WSTOPSIG(0);
}end