5 void (*signal(int sig, void (*func)(int)))(int)
7 struct sigaction sa_old, sa = { .sa_handler = func, .sa_flags = SA_RESTART };
8 if (__sigaction(sig, &sa, &sa_old) < 0)
10 return sa_old.sa_handler;
13 weak_alias(signal, bsd_signal);
14 weak_alias(signal, __sysv_signal);