1  struct X {
       2      struct Y {
       3  	struct YY {
       4  	    struct Z {
       5  		int i;
       6  	    } c;
       7  	} bb;
       8      } b;
       9  } a;
      10  int __attribute__((noinline, noclone))
      11  foo (struct Z *p)
      12  {
      13    int i = p->i;
      14    a.b = (struct Y){};
      15    return p->i + i;
      16  }
      17  extern void abort (void);
      18  int main()
      19  {
      20    a.b.bb.c.i = 1;
      21    if (foo (&a.b.bb.c) != 1)
      22      abort ();
      23    return 0;
      24  }