1  #ifdef __cplusplus
       2  struct A1 {};
       3  struct A2 {};
       4  struct dummy : A1, A2 {} ;
       5  #else
       6  struct dummy {};
       7  #endif
       8  
       9  struct foo
      10  {
      11    int i1;
      12    int i2;
      13    int i3;
      14    int i4;
      15    int i5;
      16  };