scc

 1struct S1 {
 2	int a;
 3	int b;
 4};
 5struct S2 {
 6	struct S1 s1;
 7	struct S1 *ps1;
 8	int arr[2];
 9};
10struct S1 gs1 = {.a = 1, 2};
11struct S2 *s = &(struct S2) {
12	{.b = 2, .a = 1},
13	&gs1,
14	{[0] = 1,  1+1}
15};
16
17int
18main()
19{
20	if(s->s1.a != 1)
21		return 1;
22	if(s->s1.b != 2)
23		return 2;
24	if(s->ps1->a != 1)
25		return 3;
26	if(s->ps1->b != 2)
27		return 4;
28	if(s->arr[0] != 1)
29		return 5;
30	if(s->arr[1] != 2)
31		return 6;
32	return 0;
33}