1  /* { dg-do compile } */
       2  /* Test that -Warray-bounds is enabled by -Wall */
       3  /* { dg-options "-O2 -Wall" } */
       4  
       5  int a[10];
       6  
       7  int* f(void) {
       8  
       9      a[-1] = 0;             /* { dg-warning "array subscript" } */
      10  
      11      return a;
      12  }
      13