1  /* PR tree-optimization/103255 */
       2  
       3  struct H
       4  {
       5    unsigned a;
       6    unsigned b;
       7    unsigned c;
       8  };
       9  
      10  #if __SIZEOF_POINTER__ >= 4
      11  #define ADDR 0x400000
      12  #else
      13  #define ADDR 0x4000
      14  #endif
      15  #define OFF 0x20
      16  
      17  int
      18  main ()
      19  {
      20    struct H *h = 0;
      21    unsigned long o;
      22    volatile int t = 1;
      23  
      24    for (o = OFF; o <= OFF; o += 0x1000)
      25      {
      26        struct H *u;
      27        u = (struct H *) (ADDR + o);
      28        if (t)
      29  	{
      30  	  h = u;
      31  	  break;
      32  	}
      33      }
      34  
      35    if (h == 0)
      36      return 0;
      37    unsigned *tt = &h->b;
      38    if ((__SIZE_TYPE__) tt != (ADDR + OFF + __builtin_offsetof (struct H, b)))
      39      __builtin_abort ();
      40    return 0;
      41  }