1  /* PR tree-optimization/82389 */
       2  /* { dg-do compile { target lp64 } } */
       3  /* { dg-options "-w -O3" } */
       4  
       5  struct S { char s[0x40000000]; } s;
       6  
       7  void
       8  foo (struct S *p)
       9  {
      10    char b[0x0ffffffff0000000L];
      11    *(struct S *)&b[0x0fffffffef000000L] = s;
      12    *p = *(struct S *)&b[0x0fffffffefffffffL];
      13  }