1 /* Public domain. */ 2 3 #include <signal.h> 4 main()5 main() 6 { 7 struct sigaction sa; 8 sa.sa_handler = 0; 9 sa.sa_flags = 0; 10 sigemptyset(&sa.sa_mask); 11 sigaction(0,&sa,(struct sigaction *) 0); 12 } 13