1  #define REL(n) \
       2    static int data##n; \
       3    void *p##n = &data##n;
       4  
       5  REL(1)
       6  REL(2)
       7  REL(3)
       8  REL(4)
       9  REL(5)
      10  REL(6)
      11  REL(7)