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

void myOwnHandler(int signo) {
  if (signo == SIGSEGV) {
    printf("Memory Access blows up!\n");
    exit(1);
  }
}

int main() {
  int *ip = NULL;

  if (signal(SIGSEGV, myOwnHandler) == SIG_ERR) 
    printf("Failed to register handler\n");

  *ip = 123;
  return 0;
}