1// clang-format off
2// REQUIRES: lld, x86
3
4// Make sure class layout is correct.
5// RUN: %clang_cl --target=x86_64-windows-msvc -Od -Z7 -c /Fo%t.obj -- %s
6// RUN: lld-link -debug:full -nodefaultlib -entry:main %t.obj -out:%t.exe -pdb:%t.pdb
7// RUN: %lldb -f %t.exe -s \
8// RUN: %p/Inputs/class_layout.lldbinit 2>&1 | FileCheck %s
9
10// CHECK: (lldb) expr a
11// CHECK-NEXT: (A) $0 = (d1 = 'a', d2 = 1, d3 = 2, d4 = 'b')
12// CHECK-NEXT: (lldb) expr b.c
13// CHECK-NEXT: (char) $1 = 'a'
14// CHECK-NEXT: (lldb) expr b.u.c
15// CHECK-NEXT: (char[2]) $2 = "b"
16// CHECK-NEXT: (lldb) expr b.u.i
17// CHECK-NEXT: (int) $3 = 98
18// CHECK-NEXT: (lldb) expr c
19// CHECK-NEXT: (C) $4 = {
20// CHECK-NEXT: c = 'a'
21// CHECK-NEXT: x = 65
22// CHECK-NEXT: = {
23// CHECK-NEXT: = {
24// CHECK-NEXT: c1 = 'b'
25// CHECK-NEXT: = {
26// CHECK-NEXT: = {
27// CHECK-NEXT: s3 = {
28// CHECK-NEXT: x = ([0] = 66, [1] = 67, [2] = 68)
29// CHECK-NEXT: }
30// CHECK-NEXT: c3 = 'c'
31// CHECK-NEXT: }
32// CHECK-NEXT: = {
33// CHECK-NEXT: c4 = 'B'
34// CHECK-NEXT: s4 = {
35// CHECK-NEXT: x = ([0] = 67, [1] = 68, [2] = 99)
36// CHECK-NEXT: }
37// CHECK-NEXT: s1 = {
38// CHECK-NEXT: x = ([0] = 69, [1] = 70, [2] = 71)
39// CHECK-NEXT: }
40// CHECK-NEXT: }
41// CHECK-NEXT: }
42// CHECK-NEXT: }
43// CHECK-NEXT: = {
44// CHECK-NEXT: s2 = {
45// CHECK-NEXT: x = ([0] = 98, [1] = 66, [2] = 67)
46// CHECK-NEXT: }
47// CHECK-NEXT: c2 = 'D'
48// CHECK-NEXT: }
49// CHECK-NEXT: }
50// CHECK-NEXT: }
51// CHECK-NEXT: (lldb) type lookup C
52// CHECK-NEXT: struct C {
53// CHECK-NEXT: char c;
54// CHECK-NEXT: int x;
55// CHECK-NEXT: union {
56// CHECK-NEXT: struct {
57// CHECK-NEXT: char c1;
58// CHECK-NEXT: union {
59// CHECK-NEXT: struct {
60// CHECK-NEXT: S3 s3;
61// CHECK-NEXT: char c3;
62// CHECK-NEXT: };
63// CHECK-NEXT: struct {
64// CHECK-NEXT: char c4;
65// CHECK-NEXT: S3 s4;
66// CHECK-NEXT: S3 s1;
67// CHECK-NEXT: };
68// CHECK-NEXT: };
69// CHECK-NEXT: };
70// CHECK-NEXT: struct {
71// CHECK-NEXT: S3 s2;
72// CHECK-NEXT: char c2;
73// CHECK-NEXT: };
74// CHECK-NEXT: };
75// CHECK-NEXT: }
76
77
78
79// Test packed stuct layout.
80struct __attribute__((packed, aligned(1))) A {
81 char d1;
82 int d2;
83 int d3;
84 char d4;
85};
86
87struct __attribute__((packed, aligned(1))) B {
88 char c;
89 union {
90 char c[2];
91 int i;
92 } u;
93};
94
95// Test struct layout with anonymous union/struct.
96struct S3 {
97 short x[3];
98};
99
100struct C {
101 char c;
102 int x;
103 union {
104 struct {
105 char c1;
106 union {
107 struct {
108 S3 s3;
109 char c3;
110 };
111 struct {
112 char c4;
113 S3 s4;
114 };
115 };
116 S3 s1;
117 };
118 struct {
119 S3 s2;
120 char c2;
121 };
122 };
123};
124
125A a = {.d1: 'a', .d2: 1, .d3: 2, .d4: 'b'};
126B b = {.c: 'a', .u: {.c: "b"}};
127C c = {.c = 'a', .x = 65, .c1 = 'b', .s3 = {66, 67, 68}, .c3 = 'c', .s1={69, 70, 71}};
128
129int main() {
130 return 0;
131}
132

source code of lldb/test/Shell/SymbolFile/NativePDB/class_layout.cpp