1  /* { dg-require-effective-target int32plus } */
       2  union U
       3  {
       4    const int a;
       5    unsigned b : 24;
       6  };
       7  
       8  static union U u = { 0x12345678 };
       9  
      10  /* Constant folding used to fail to account for endianness when folding a
      11     union.  */
      12  
      13  int
      14  main (void)
      15  {
      16  #ifdef __BYTE_ORDER__
      17  #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
      18    return u.b - 0x345678;
      19  #else
      20    return u.b - 0x123456;
      21  #endif
      22  #endif
      23    return 0;
      24  }