1  /* PR middle-end/97943 */
       2  /* { dg-do compile } */
       3  /* { dg-options "" } */
       4  
       5  union U { int a; char b[] __attribute__((aligned (2 * sizeof (int)))); };	/* { dg-error "flexible array member in union" } */
       6  struct V { int a; union U b; };
       7  struct W { int a; union U b; int c; };
       8  
       9  void
      10  foo (union U *u, struct V *v, struct W *w)
      11  {
      12    __builtin_clear_padding (u);
      13    __builtin_clear_padding (v);
      14    __builtin_clear_padding (w);
      15  }