1 struct A {
AA2 explicit A(int u) { _u._u3 = u; }
3 A(const A &) = default;
4 virtual ~A() = default;
5
6 private:
7 union U {
8 char _u1;
9 short _u2;
10 int _u3;
11 };
12
13 A::U _u;
14 };
15
16 #pragma pack(push, 1)
17 template <int I> struct B : public virtual A {
BB18 B(char a, unsigned short b, int c) : A(a + b + c), _a(a), _b(b), _c(c) {}
19
20 private:
21 char _a;
22 unsigned short : 3;
23 unsigned short _b : 6;
24 unsigned short : 4;
25 int _c;
26 };
27 #pragma pack(pop)
28
29 #pragma pack(push, 16)
30 class C : private virtual B<0>, public virtual B<1>, private B<2>, public B<3> {
31 public:
C(char x,char y,char z)32 C(char x, char y, char z)
33 : A(x - y + z), B<0>(x, y, z), B<1>(x * 2, y * 2, z * 2),
34 B<2>(x * 3, y * 3, z * 3), B<3>(x * 4, y * 4, z * 4), _x(x * 5),
35 _y(y * 5), _z(z * 5) {}
36
37 static int abc;
38
39 private:
40 int _x;
41 short _y;
42 char _z;
43 };
44 int C::abc = 123;
45 #pragma pack(pop)
46
47 class List {
48 public:
49 List() = default;
List(List * p,List * n,C v)50 List(List *p, List *n, C v) : Prev(p), Next(n), Value(v) {}
51
52 private:
53 List *Prev = nullptr;
54 List *Next = nullptr;
55 C Value{1, 2, 3};
56 };
57
main()58 int main() {
59 List ls[16];
60 return 0;
61 }
62