1 #include <signal.h>

     2 

     3 void main()

     4 {

     5   struct sigaction sa;

     6   sa.sa_handler = 0;

     7   sa.sa_flags = 0;

     8   sigemptyset(&sa.sa_mask);

     9   sigaction(0,&sa,(struct sigaction *) 0);

    10 }