1  /* { dg-options "-w -O2 -fomit-frame-pointer" } */
       2  /* { dg-final { scan-assembler-not "%a.,%\[ad\]..l" } } */
       3  
       4  struct X { 
       5    char *a; 
       6    /* other members */ 
       7    int b; 
       8  }; 
       9   
      10  void f (struct X *x) 
      11  { 
      12    x->a[x->b] = 0; 
      13  }