1  /* { dg-do run } */
       2  /* { dg-options "-O0" } */
       3  
       4  extern void abort (void);
       5  extern void exit (int);
       6  
       7  struct { union {int x; int y;}; int q; } b;
       8  union { struct {int x;}; int q; } e;
       9  
      10  int
      11  main()
      12  {
      13    b.y = 10;
      14    b.x = 15;
      15    if (b.y != 15)
      16      abort();
      17  
      18    e.x = 10;
      19    e.q = 15;
      20    if (e.x != 15)
      21      abort();
      22  
      23    exit(0);
      24  }