1struct fd 2{ 3 unsigned char a; 4 unsigned char b; 5} f = { 5 }; 6 7struct fd *g() { return &f; } 8int h() { return -1; } 9 10int main() 11{ 12 struct fd *f = g(); 13 f->b = h(); 14 if (((f->a & 0x7f) & ~0x10) <= 2) 15 abort (); 16 exit (0); 17} 18