scc

 1struct foo {
 2	int i, j, k;
 3	char *p;
 4	float v;
 5};
 6
 7int
 8f1(struct foo f, struct foo *p, int n, ...)
 9{
10	if (f.i != p->i)
11		return 0;
12	return p->j + n;
13}
14
15int
16main(void)
17{
18	struct foo f;
19
20	f.i = f.j = 1;
21	f1(f, &f, 2);
22	f1(f, &f, 2, 1, f, &f);
23
24	return 0;
25}