Mercurial > hg > CbC > CbC_gcc
comparison gcc/testsuite/gcc.dg/bf-ms-layout-2.c @ 111:04ced10e8804
gcc 7
author | kono |
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date | Fri, 27 Oct 2017 22:46:09 +0900 |
parents | |
children | 84e7813d76e9 |
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68:561a7518be6b | 111:04ced10e8804 |
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1 /* bf-ms-layout.c */ | |
2 | |
3 /* Test for MS bitfield layout */ | |
4 /* Adapted from Donn Terry <donnte@microsoft.com> testcase | |
5 posted to GCC-patches | |
6 http://gcc.gnu.org/ml/gcc-patches/2000-08/msg00577.html */ | |
7 | |
8 /* { dg-do run { target i?86-*-* x86_64-*-* } } */ | |
9 /* { dg-options "-D_TEST_MS_LAYOUT" } */ | |
10 /* This test uses the attribute instead of the command line option. */ | |
11 | |
12 #include <stddef.h> | |
13 #include <string.h> | |
14 | |
15 extern void abort(); | |
16 | |
17 #pragma pack(8) | |
18 | |
19 #ifdef __GNUC__ | |
20 #define ATTR __attribute__ ((ms_struct)) | |
21 #endif | |
22 | |
23 struct one { | |
24 int d; | |
25 unsigned char a; | |
26 unsigned short b:7; | |
27 char c; | |
28 } ATTR; | |
29 | |
30 struct two { | |
31 int d; | |
32 unsigned char a; | |
33 unsigned int b:7; | |
34 char c; | |
35 } ATTR; | |
36 | |
37 struct three { | |
38 short d; | |
39 unsigned short a:3; | |
40 unsigned short b:9; | |
41 unsigned char c:7; | |
42 } ATTR; | |
43 | |
44 | |
45 /* Bitfields of size 0 have some truly odd behaviors. */ | |
46 | |
47 struct four { | |
48 unsigned short a:3; | |
49 unsigned short b:9; | |
50 unsigned int :0; /* forces struct alignment to int */ | |
51 unsigned char c:7; | |
52 } ATTR; | |
53 | |
54 struct five { | |
55 char a; | |
56 int :0; /* ignored; prior field is not a bitfield. */ | |
57 char b; | |
58 char c; | |
59 } ATTR; | |
60 | |
61 struct six { | |
62 char a :8; | |
63 int :0; /* not ignored; prior field IS a bitfield, causes | |
64 struct alignment as well. */ | |
65 char b; | |
66 char c; | |
67 } ATTR; | |
68 | |
69 struct seven { | |
70 char a:8; | |
71 char :0; | |
72 int :0; /* Ignored; prior field is zero size bitfield. */ | |
73 char b; | |
74 char c; | |
75 } ATTR; | |
76 | |
77 struct eight { /* ms size 4 */ | |
78 short b:3; | |
79 char c; | |
80 } ATTR; | |
81 | |
82 #ifdef _MSC_VER | |
83 #define LONGLONG __int64 | |
84 #else | |
85 #define LONGLONG long long | |
86 #endif | |
87 | |
88 union nine { /* ms size 8 */ | |
89 LONGLONG a:3; | |
90 char c; | |
91 } ATTR; | |
92 | |
93 struct ten { /* ms size 16 */ | |
94 LONGLONG a:3; | |
95 LONGLONG b:3; | |
96 char c; | |
97 } ATTR; | |
98 | |
99 | |
100 #define val(s,f) (s.f) | |
101 | |
102 #define check_struct(_X) \ | |
103 { \ | |
104 if (sizeof (struct _X) != exp_sizeof_##_X ) \ | |
105 abort(); \ | |
106 memcpy(&test_##_X, filler, sizeof(test_##_X));\ | |
107 if (val(test_##_X,c) != exp_##_X##_c) \ | |
108 abort(); \ | |
109 } | |
110 | |
111 #define check_union(_X) \ | |
112 { \ | |
113 if (sizeof (union _X) != exp_sizeof_##_X ) \ | |
114 abort(); \ | |
115 memcpy(&test_##_X, filler, sizeof(test_##_X));\ | |
116 if (val(test_##_X,c) != exp_##_X##_c) \ | |
117 abort(); \ | |
118 } | |
119 | |
120 #define check_struct_size(_X) \ | |
121 { \ | |
122 if (sizeof (struct _X) != exp_sizeof_##_X ) \ | |
123 abort(); \ | |
124 } | |
125 | |
126 #define check_struct_off(_X) \ | |
127 { \ | |
128 memcpy(&test_##_X, filler, sizeof(test_##_X));\ | |
129 if (val(test_##_X,c) != exp_##_X##_c) \ | |
130 abort(); \ | |
131 } | |
132 | |
133 #define check_union_size(_X) \ | |
134 { \ | |
135 if (sizeof (union _X) != exp_sizeof_##_X ) \ | |
136 abort(); \ | |
137 } | |
138 | |
139 #define check_union_off(_X) \ | |
140 { \ | |
141 memcpy(&test_##_X, filler, sizeof(test_##_X));\ | |
142 if (val(test_##_X,c) != exp_##_X##_c) \ | |
143 abort(); \ | |
144 } | |
145 | |
146 int main(){ | |
147 | |
148 unsigned char filler[16]; | |
149 struct one test_one; | |
150 struct two test_two; | |
151 struct three test_three; | |
152 struct four test_four; | |
153 struct five test_five; | |
154 struct six test_six; | |
155 struct seven test_seven; | |
156 struct eight test_eight; | |
157 union nine test_nine; | |
158 struct ten test_ten; | |
159 | |
160 #if defined (_TEST_MS_LAYOUT) || defined (_MSC_VER) | |
161 size_t exp_sizeof_one = 8; | |
162 size_t exp_sizeof_two = 12; | |
163 size_t exp_sizeof_three =6; | |
164 size_t exp_sizeof_four = 8; | |
165 size_t exp_sizeof_five = 3; | |
166 size_t exp_sizeof_six = 8; | |
167 size_t exp_sizeof_seven = 3; | |
168 size_t exp_sizeof_eight = 2; | |
169 size_t exp_sizeof_nine = 8; | |
170 size_t exp_sizeof_ten = 8; | |
171 | |
172 unsigned char exp_one_c = 7; | |
173 unsigned char exp_two_c = 9; | |
174 unsigned char exp_three_c = 4; | |
175 unsigned char exp_four_c = 4; | |
176 char exp_five_c = 2; | |
177 char exp_six_c = 5; | |
178 char exp_seven_c = 2; | |
179 char exp_eight_c = 1; | |
180 char exp_nine_c = 0; | |
181 char exp_ten_c = 1; | |
182 | |
183 #else /* testing -mno-ms-bitfields */ | |
184 | |
185 size_t exp_sizeof_one = 8; | |
186 size_t exp_sizeof_two = 8; | |
187 size_t exp_sizeof_three = 6; | |
188 size_t exp_sizeof_four = 6; | |
189 size_t exp_sizeof_five = 6; | |
190 size_t exp_sizeof_six = 6; | |
191 size_t exp_sizeof_seven = 6; | |
192 size_t exp_sizeof_eight = 2; | |
193 size_t exp_sizeof_nine = 8; | |
194 size_t exp_sizeof_ten = 8; | |
195 | |
196 unsigned short exp_one_c = 6; | |
197 unsigned int exp_two_c = 6; | |
198 unsigned char exp_three_c = 64; | |
199 unsigned char exp_four_c = 4; | |
200 char exp_five_c = 5; | |
201 char exp_six_c = 5; | |
202 char exp_seven_c = 5; | |
203 char exp_eight_c = 1; | |
204 char exp_nine_c = 0; | |
205 char exp_ten_c = 1; | |
206 | |
207 #endif | |
208 | |
209 unsigned char i; | |
210 for ( i = 0; i < 16; i++ ) | |
211 filler[i] = i; | |
212 | |
213 check_struct_off (one); | |
214 check_struct_off (two); | |
215 check_struct_off (three); | |
216 check_struct_off (four); | |
217 check_struct_off (five); | |
218 check_struct_off (six); | |
219 check_struct_off (seven); | |
220 check_struct_off (eight); | |
221 check_union_off (nine); | |
222 check_struct_off (ten); | |
223 | |
224 check_struct_size (one); | |
225 check_struct_size (two); | |
226 check_struct_size (three); | |
227 check_struct_size (four); | |
228 check_struct_size (five); | |
229 check_struct_size (six); | |
230 check_struct_size (seven); | |
231 check_struct_size (eight); | |
232 check_union_size (nine); | |
233 check_struct_size (ten); | |
234 | |
235 return 0; | |
236 }; |