1 struct M;
2
3 struct S {
4 int x;
5 M * m;
6 int y;
7 };
8
9 struct M {
10 int a;
11 S * s;
12 };
13
14 struct T {
15 S s;
16 int a;
17 };
18
19 struct U {
20 struct {
21 S s;
22 };
23 int r;
24 };
25
reg1(S*, T*, T*)26 void reg1(S*, T*, T*) { }
reg2(U*)27 void reg2(U*) { }
28