1  struct Foo {
       2    int i;
       3    unsigned precision : 10;
       4    unsigned blah : 3;
       5  } f;
       6  
       7  int __attribute__((noinline,noclone))
       8  foo (struct Foo *p)
       9  {
      10    struct Foo *q = p;
      11    return (*q).precision;
      12  }
      13  
      14  extern void abort (void);
      15  
      16  int main()
      17  {
      18    f.i = -1;
      19    f.precision = 0;
      20    f.blah = -1;
      21    if (foo (&f) != 0)
      22      abort ();
      23    return 0;
      24  }