1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
// RUN: %clang_cc1 %std_cxx98-14 -w -fdump-record-layouts-simple %s > %t.layouts
// RUN: %clang_cc1 %std_cxx98-14 -w -fdump-record-layouts-simple %s > %t.before
// RUN: %clang_cc1 %std_cxx98-14 -w -DPACKED= -DALIGNED16= -fdump-record-layouts-simple -foverride-record-layout=%t.layouts %s > %t.after
// RUN: diff -u %t.before %t.after
// RUN: FileCheck --check-prefixes=CHECK,PRE17 %s < %t.after
// RUN: %clang_cc1 -std=c++17 -w -fdump-record-layouts-simple %s > %t.layouts
// RUN: %clang_cc1 -std=c++17 -w -fdump-record-layouts-simple %s > %t.before
// RUN: %clang_cc1 -std=c++17 -w -DPACKED= -DALIGNED16= -fdump-record-layouts-simple -foverride-record-layout=%t.layouts %s > %t.after
// RUN: diff -u %t.before %t.after
// RUN: FileCheck --check-prefixes=CHECK,CXX17 %s < %t.after
// CXX17: Type: struct X6
// If not explicitly disabled, set PACKED to the packed attribute.
#ifndef PACKED
# define PACKED __attribute__((packed))
#endif
struct Empty1 { };
struct Empty2 { };
// CHECK: Type: struct X0
struct X0 : public Empty1 {
int x[6] PACKED;
};
// CHECK: Type: struct X1
struct X1 : public X0, public Empty2 {
char x[13];
struct X0 y;
} PACKED;
// CHECK: Type: struct X2
struct PACKED X2 : public X1, public X0, public Empty1 {
short x;
int y;
};
// CHECK: Type: struct X3
struct PACKED X3 : virtual public X1, public X0 {
short x;
int y;
};
// CHECK: Type: struct X4
struct PACKED X4 {
unsigned int a : 1;
unsigned int b : 1;
unsigned int c : 1;
unsigned int d : 1;
unsigned int e : 1;
unsigned int f : 1;
unsigned int g : 1;
unsigned int h : 1;
unsigned int i : 1;
unsigned int j : 1;
unsigned int k : 1;
unsigned int l : 1;
unsigned int m : 1;
unsigned int n : 1;
X4();
};
// CHECK: Type: struct X5
struct PACKED X5 {
union {
long a;
long b;
};
short l;
short r;
};
// PRE17: Type: struct X6
struct __attribute__((aligned(16))) X6 {
int x;
int y;
virtual ~X6();
};
// PRE17: Type: struct X7
struct X7 {
int z;
};
// PRE17: Type: struct X8
struct X8 : X6, virtual X7 {
char c;
};
void use_structs() {
X0 x0s[sizeof(X0)];
X1 x1s[sizeof(X1)];
X2 x2s[sizeof(X2)];
X3 x3s[sizeof(X3)];
X4 x4s[sizeof(X4)];
X5 x5s[sizeof(X5)];
X6 x6s[sizeof(X6)];
X7 x7s[sizeof(X7)];
X8 x8s[sizeof(X8)];
x4s[1].a = 1;
x5s[1].a = 17;
}
|
