Listing 2. Example Program Containing Instruction Skip
void func(int a, int b)
{
int * p; /* pointer to point return address */
p = &b ; /* p points to the address of b */
p -= 2 ; /* sub 8 bytes to from p (or &b) so */
/* it points to the return address */
printf("The return address is %x \n",*p);
(*p)+= 10; /* add 10 bytes to the return address
* to skip the num = 1 */
printf("The new return address is %x \n",*p);
}
main()
{
int num;
num = 0;
func(1,2);
num = 1;
printf(" Num is now %d \n",num);
}