1 | // RUN: %clang_cc1 -w -fdump-record-layouts-simple %s > %t.layouts |
2 | // RUN: %clang_cc1 -w -DPACKED= -DALIGNED16= -fdump-record-layouts-simple -foverride-record-layout=%t.layouts %s > %t.after |
3 | // RUN: diff %t.layouts %t.after |
4 | // RUN: FileCheck %s < %t.after |
5 | |
6 | // If not explicitly disabled, set PACKED to the packed attribute. |
7 | #ifndef PACKED |
8 | # define PACKED __attribute__((packed)) |
9 | #endif |
10 | |
11 | // If not explicitly disabled, set ALIGNED16 to 16-byte alignment. |
12 | #ifndef ALIGNED16 |
13 | # define ALIGNED16 __attribute__((aligned(16))) |
14 | #endif |
15 | |
16 | // CHECK: Type: struct X0 |
17 | struct X0 { |
18 | int x[6] PACKED; |
19 | }; |
20 | |
21 | void use_X0() { struct X0 x0; x0.x[5] = sizeof(struct X0); }; |
22 | |
23 | // CHECK: Type: struct X1 |
24 | struct X1 { |
25 | char x[13]; |
26 | struct X0 y; |
27 | } PACKED; |
28 | |
29 | void use_X1() { struct X1 x1; x1.x[5] = sizeof(struct X1); }; |
30 | |
31 | // CHECK: Type: struct X2 |
32 | struct PACKED X2 { |
33 | short x; |
34 | int y; |
35 | }; |
36 | |
37 | void use_X2() { struct X2 x2; x2.y = sizeof(struct X2); }; |
38 | |
39 | // CHECK: Type: struct X3 |
40 | struct X3 { |
41 | short x PACKED; |
42 | int y; |
43 | }; |
44 | |
45 | void use_X3() { struct X3 x3; x3.y = sizeof(struct X3); }; |
46 | |
47 | #pragma pack(push,2) |
48 | // CHECK: Type: struct X4 |
49 | struct X4 { |
50 | int x; |
51 | int y; |
52 | }; |
53 | #pragma pack(pop) |
54 | |
55 | void use_X4() { struct X4 x4; x4.y = sizeof(struct X4); }; |
56 | |
57 | // CHECK: Type: struct X5 |
58 | struct PACKED X5 { double a[19]; signed char b; }; |
59 | |
60 | void use_X5() { struct X5 x5; x5.b = sizeof(struct X5); }; |
61 | |
62 | // CHECK: Type: struct X6 |
63 | struct PACKED X6 { long double a; char b; }; |
64 | |
65 | void use_X6() { struct X6 x6; x6.b = sizeof(struct X6); }; |
66 | |
67 | // CHECK: Type: struct X7 |
68 | struct X7 { |
69 | unsigned x; |
70 | unsigned char y; |
71 | } PACKED; |
72 | |
73 | void use_X7() { struct X7 x7; x7.y = x7.x = sizeof(struct X7); } |
74 | |
75 | // CHECK: Type: union X8 |
76 | union X8 { |
77 | struct X7 x; |
78 | unsigned y; |
79 | } PACKED; |
80 | |
81 | // CHECK: Type: struct X9 |
82 | struct X9 { |
83 | unsigned int x[2] PACKED; |
84 | unsigned int y; |
85 | unsigned int z PACKED; |
86 | }; |
87 | |
88 | // CHECK: Type: struct X10 |
89 | struct X10 { |
90 | unsigned int x[2] PACKED; |
91 | unsigned int y PACKED; |
92 | unsigned int z PACKED; |
93 | }; |
94 | |
95 | // CHECK: Type: struct X11 |
96 | struct PACKED X11 { |
97 | unsigned int x[2]; |
98 | unsigned int y; |
99 | unsigned int z; |
100 | }; |
101 | |
102 | // CHECK: Type: struct X12 |
103 | struct PACKED X12 { |
104 | int x : 24; |
105 | }; |
106 | |
107 | // CHECK: Type: struct X13 |
108 | struct PACKED X13 { |
109 | signed x : 10; |
110 | signed y : 10; |
111 | }; |
112 | |
113 | // CHECK: Type: union X14 |
114 | union PACKED X14 { |
115 | unsigned long long x : 3; |
116 | }; |
117 | |
118 | // CHECK: Type: struct X15 |
119 | struct X15 { |
120 | unsigned x : 16; |
121 | unsigned y : 28 PACKED; |
122 | }; |
123 | |
124 | // CHECK: Type: struct X16 |
125 | struct ALIGNED16 X16 { |
126 | int a, b, c; |
127 | int x : 5; |
128 | int y : 29; |
129 | }; |
130 | |
131 | void use_structs() { |
132 | union X8 x8; |
133 | typedef int X8array[sizeof(union X8)]; |
134 | x8.y = sizeof(union X8); |
135 | x8.x.x = x8.y; |
136 | |
137 | struct X9 x9; |
138 | typedef int X9array[sizeof(struct X9)]; |
139 | x9.y = sizeof(struct X9); |
140 | |
141 | struct X10 x10; |
142 | typedef int X10array[sizeof(struct X10)]; |
143 | x10.y = sizeof(struct X10); |
144 | |
145 | struct X11 x11; |
146 | typedef int X11array[sizeof(struct X11)]; |
147 | x11.y = sizeof(struct X11); |
148 | |
149 | struct X12 x12; |
150 | x12.x = sizeof(struct X12); |
151 | |
152 | struct X13 x13; |
153 | x13.x = sizeof(struct X13); |
154 | |
155 | union X14 x14; |
156 | x14.x = sizeof(union X14); |
157 | |
158 | struct X15 x15; |
159 | x15.x = sizeof(struct X15); |
160 | |
161 | struct X16 x16; |
162 | x16.x = sizeof(struct X16); |
163 | } |
164 | |