none/tests/blockfault.c

#include <stdio.h>
#include <stdlib.h>
#include <signal.h>

static void handler(int sig, siginfo_t *info, void *v)
{
	printf("info: sig=%d code=%d addr=%p\n",
	       info->si_signo, info->si_code, info->si_addr);
	exit(0);
}

/* Blocking a fault, ie SIGSEGV, won't work, and is the same as having
   the default handler */
int main()
{
#if defined(_AIX)
  printf("this test hangs when run (even natively) on AIX\n");
  return 0;
#endif
	struct sigaction sa;
	sigset_t mask;

	sa.sa_sigaction = handler;
	sigemptyset(&sa.sa_mask);
	sa.sa_flags = SA_SIGINFO;
	
	sigaction(SIGSEGV, &sa, NULL);

	sigfillset(&mask);
	sigprocmask(SIG_BLOCK, &mask, NULL);

	*(volatile int *)12345 = 213;

	return 0;
}