1int main(int argc, char** argv)
2{
3 struct A {
4 struct {
5 int x = 1;
6 };
7 int y = 2;
8 } a;
9
10 struct B {
11 // Anonymous struct inherits another struct.
12 struct : public A {
13 int z = 3;
14 };
15 int w = 4;
16 A a;
17 } b;
18
19 // Anonymous classes and unions.
20 struct C {
21 union {
22 int x = 5;
23 };
24 class {
25 public:
26 int y = 6;
27 };
28 } c;
29
30 // Multiple levels of anonymous structs.
31 struct D {
32 struct {
33 struct {
34 int x = 7;
35 struct {
36 int y = 8;
37 };
38 };
39 int z = 9;
40 struct {
41 int w = 10;
42 };
43 };
44 } d;
45
46 struct E {
47 struct IsNotAnon {
48 int x = 11;
49 };
50 } e;
51
52 struct F {
53 struct {
54 int x = 12;
55 } named_field;
56 } f;
57
58 // Inherited unnamed struct without an enclosing parent class.
59 struct : public A {
60 struct {
61 int z = 13;
62 };
63 } unnamed_derived;
64
65 struct DerivedB : public B {
66 struct {
67 // `w` in anonymous struct overrides `w` from `B`.
68 int w = 14;
69 int k = 15;
70 };
71 } derb;
72
73 return 0; // Set a breakpoint here
74}
75

source code of lldb/test/API/commands/frame/var-dil/basics/MemberOfAnonymousMember/main.cpp