1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -floop-nest-optimize -Wno-aggressive-loop-optimizations" } */
       3  
       4  int a;
       5  int b[6];
       6  int c ()
       7  {
       8    int d;
       9    for (; d; d++)
      10      b[d] = 0;
      11    for (; d < 8; d++)
      12      a += b[d];
      13  }