1// RUN: %clang_cc1 -fdump-record-layouts-simple %s > %t.layouts
2// RUN: %clang_cc1 -fdump-record-layouts-simple %s > %t.before
3// RUN: %clang_cc1 -DPACKED= -DALIGNED16= -fdump-record-layouts-simple -foverride-record-layout=%t.layouts %s > %t.after
4// RUN: diff -u %t.before %t.after
5// RUN: FileCheck %s < %t.after
6
7// If not explicitly disabled, set PACKED to the packed attribute.
8#ifndef PACKED
9#  define PACKED __attribute__((packed))
10#endif
11
12struct Empty1 { };
13struct Empty2 { };
14
15// CHECK: Type: struct X0
16struct X0 : public Empty1 {
17  int x[6] PACKED;
18};
19
20// CHECK: Type: struct X1
21struct X1 : public X0, public Empty2 {
22  char x[13];
23  struct X0 y;
24} PACKED;
25
26// CHECK: Type: struct X2
27struct PACKED X2 :  public X1, public X0, public Empty1 {
28  short x;
29  int y;
30};
31
32// CHECK: Type: struct X3
33struct PACKED X3 : virtual public X1, public X0 {
34  short x;
35  int y;
36};
37
38// CHECK: Type: struct X4
39struct PACKED X4 {
40  unsigned int a : 1;
41  unsigned int b : 1;
42  unsigned int c : 1;
43  unsigned int d : 1;
44  unsigned int e : 1;
45  unsigned int f : 1;
46  unsigned int g : 1;
47  unsigned int h : 1;
48  unsigned int i : 1;
49  unsigned int j : 1;
50  unsigned int k : 1;
51  unsigned int l : 1;
52  unsigned int m : 1;
53  unsigned int n : 1;
54  X4();
55};
56
57// CHECK: Type: struct X5
58struct PACKED X5 {
59  union {
60    long a;
61    long b;
62  };
63  short l;
64  short r;
65};
66
67void use_structs() {
68  X0 x0s[sizeof(X0)];
69  X1 x1s[sizeof(X1)];
70  X2 x2s[sizeof(X2)];
71  X3 x3s[sizeof(X3)];
72  X4 x4s[sizeof(X4)];
73  X5 x5s[sizeof(X5)];
74  x4s[1].a = 1;
75  x5s[1].a = 17;
76}
77
78