1  /* PR c/92326 - wrong bound in zero-length array diagnostics
       2     { dg-do compile }
       3     { dg-options "-O2 -Wall" } */
       4  
       5  extern int a0[0];
       6  extern int ax[];
       7  
       8  void warn_global_array (void)
       9  {
      10    a0[0] = 0;        // { dg-warning "array bounds of 'int *\\\[0]'" }
      11    ax[-1] = 0;       // { dg-warning "array bounds of 'int *\\\[]'" }
      12  }
      13  
      14  
      15  struct S0 { int n, a0[0]; } s0;
      16  struct Sx { int n, ax[]; } sx = { 0 };
      17  
      18  void warn_member_array (void)
      19  {
      20    s0.a0[0] = 0;     // { dg-warning "array bounds of 'int *\\\[0]'" }
      21    sx.ax[0] = 0;     // { dg-warning "array bounds of 'int *\\\[]'" }
      22  }