1 | /* Test and measure STRCHR functions. |
2 | Copyright (C) 1999-2024 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #define TEST_MAIN |
20 | #ifdef WIDE |
21 | # define TEST_NAME "wcsrchr" |
22 | #else |
23 | # define TEST_NAME "strrchr" |
24 | #endif |
25 | #include "test-string.h" |
26 | |
27 | #ifdef WIDE |
28 | # include <wchar.h> |
29 | # define STRRCHR wcsrchr |
30 | # define CHAR wchar_t |
31 | # define UCHAR wchar_t |
32 | # define BIG_CHAR WCHAR_MAX |
33 | # define SMALL_CHAR 1273 |
34 | #else |
35 | # define STRRCHR strrchr |
36 | # define CHAR char |
37 | # define UCHAR unsigned char |
38 | # define BIG_CHAR CHAR_MAX |
39 | # define SMALL_CHAR 127 |
40 | #endif |
41 | |
42 | typedef CHAR *(*proto_t) (const CHAR *, int); |
43 | |
44 | IMPL (STRRCHR, 1) |
45 | |
46 | /* Also check the generic implementation. */ |
47 | #undef STRRCHR |
48 | #undef weak_alias |
49 | #define weak_alias(a, b) |
50 | #undef libc_hidden_builtin_def |
51 | #define libc_hidden_builtin_def(a) |
52 | #undef libc_hidden_def |
53 | #define libc_hidden_def(a) |
54 | #undef libc_hidden_weak |
55 | #define libc_hidden_weak(a) |
56 | #ifndef WIDE |
57 | # define STRLEN __strlen_default |
58 | # include "string/strlen.c" |
59 | # define MEMRCHR __memrchr_default |
60 | # include "string/memrchr.c" |
61 | # define STRRCHR __strrchr_default |
62 | # include "string/strrchr.c" |
63 | # define STRRCHR_DEFAULT __strrchr_default |
64 | #else |
65 | # define WCSRCHR __wcsrchr_default |
66 | # include "wcsmbs/wcsrchr.c" |
67 | # define STRRCHR_DEFAULT __wcsrchr_default |
68 | #endif |
69 | IMPL (STRRCHR_DEFAULT, 1) |
70 | |
71 | static void |
72 | do_one_test (impl_t *impl, const CHAR *s, int c, CHAR *exp_res) |
73 | { |
74 | CHAR *res = CALL (impl, s, c); |
75 | if (res != exp_res) |
76 | { |
77 | error (status: 0, errnum: 0, format: "Wrong result in function %s %p %p" , impl->name, |
78 | res, exp_res); |
79 | ret = 1; |
80 | return; |
81 | } |
82 | } |
83 | |
84 | static void |
85 | do_test (size_t align, size_t pos, size_t len, int seek_char, int max_char) |
86 | /* For wcsrchr: align here means align not in bytes, |
87 | but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t)) |
88 | len for wcschr here isn't in bytes but it's number of wchar_t symbols. */ |
89 | { |
90 | size_t i; |
91 | CHAR *result; |
92 | CHAR *buf = (CHAR *) buf1; |
93 | |
94 | align &= 7; |
95 | if ( (align + len) * sizeof (CHAR) >= page_size) |
96 | return; |
97 | |
98 | for (i = 0; i < len; ++i) |
99 | { |
100 | buf[align + i] = (random () * random ()) & max_char; |
101 | if (!buf[align + i]) |
102 | buf[align + i] = (random () * random ()) & max_char; |
103 | if (!buf[align + i]) |
104 | buf[align + i] = 1; |
105 | if ((i > pos || pos >= len) && buf[align + i] == seek_char) |
106 | buf[align + i] = seek_char + 10 + (random () & 15); |
107 | } |
108 | buf[align + len] = 0; |
109 | |
110 | if (pos < len) |
111 | { |
112 | buf[align + pos] = seek_char; |
113 | result = (CHAR *) (buf + align + pos); |
114 | } |
115 | else if (seek_char == 0) |
116 | result = (CHAR *) (buf + align + len); |
117 | else |
118 | result = NULL; |
119 | |
120 | FOR_EACH_IMPL (impl, 0) |
121 | do_one_test (impl, s: (CHAR *) (buf + align), c: seek_char, exp_res: result); |
122 | } |
123 | |
124 | static void |
125 | do_random_tests (void) |
126 | { |
127 | size_t i, j, n, align, pos, len; |
128 | int seek_char; |
129 | CHAR *result; |
130 | UCHAR *p = (UCHAR *) (buf1 + page_size) - 512; |
131 | |
132 | for (n = 0; n < ITERATIONS; n++) |
133 | { |
134 | align = random () & (63 / sizeof (CHAR)); |
135 | /* For wcsrchr: align here means align not in bytes, but in wchar_ts, |
136 | in bytes it will equal to align * (sizeof (wchar_t)). |
137 | For strrchr we need to check all alignments from 0 to 63 since |
138 | some assembly implementations have separate prolog for alignments |
139 | more 48. */ |
140 | pos = random () & 511; |
141 | if (pos + align >= 511) |
142 | pos = 510 - align - (random () & 7); |
143 | len = random () & 511; |
144 | /* len for wcschr here isn't in bytes but it's number of wchar_t |
145 | symbols. */ |
146 | if (pos >= len) |
147 | len = pos + (random () & 7); |
148 | if (len + align >= 512) |
149 | len = 511 - align - (random () & 7); |
150 | seek_char = random () & 255; |
151 | if (seek_char && pos == len) |
152 | { |
153 | if (pos) |
154 | --pos; |
155 | else |
156 | ++len; |
157 | } |
158 | j = len + align + 64; |
159 | if (j > 512) |
160 | j = 512; |
161 | |
162 | for (i = 0; i < j; i++) |
163 | { |
164 | if (i == pos + align) |
165 | p[i] = seek_char; |
166 | else if (i == len + align) |
167 | p[i] = 0; |
168 | else |
169 | { |
170 | p[i] = random () & 255; |
171 | if (((i > pos + align && i < len + align) || pos > len) |
172 | && p[i] == seek_char) |
173 | p[i] = seek_char + 13; |
174 | if (i < len + align && !p[i]) |
175 | { |
176 | p[i] = seek_char - 13; |
177 | if (!p[i]) |
178 | p[i] = 140; |
179 | } |
180 | } |
181 | } |
182 | |
183 | if (pos <= len) |
184 | result = (CHAR *) (p + pos + align); |
185 | else if (seek_char == 0) |
186 | result = (CHAR *) (p + len + align); |
187 | else |
188 | result = NULL; |
189 | |
190 | FOR_EACH_IMPL (impl, 1) |
191 | if (CALL (impl, (CHAR *) (p + align), seek_char) != result) |
192 | { |
193 | error (status: 0, errnum: 0, format: "Iteration %zd - wrong result in function %s (%zd, %d, %zd, %zd) %p != %p, p %p" , |
194 | n, impl->name, align, seek_char, len, pos, |
195 | CALL (impl, (CHAR *) (p + align), seek_char), result, p); |
196 | ret = 1; |
197 | } |
198 | } |
199 | } |
200 | |
201 | int |
202 | test_main (void) |
203 | { |
204 | size_t i; |
205 | |
206 | test_init (); |
207 | |
208 | printf (format: "%20s" , "" ); |
209 | FOR_EACH_IMPL (impl, 0) |
210 | printf (format: "\t%s" , impl->name); |
211 | putchar (c: '\n'); |
212 | |
213 | for (i = 1; i < 8; ++i) |
214 | { |
215 | do_test (align: 0, pos: 16 << i, len: 2048, seek_char: 23, SMALL_CHAR); |
216 | do_test (align: i, pos: 16 << i, len: 2048, seek_char: 23, SMALL_CHAR); |
217 | } |
218 | |
219 | for (i = 1; i < 8; ++i) |
220 | { |
221 | do_test (align: i, pos: 64, len: 256, seek_char: 23, SMALL_CHAR); |
222 | do_test (align: i, pos: 64, len: 256, seek_char: 23, BIG_CHAR); |
223 | } |
224 | |
225 | for (i = 0; i < 32; ++i) |
226 | { |
227 | do_test (align: 0, pos: i, len: i + 1, seek_char: 23, SMALL_CHAR); |
228 | do_test (align: 0, pos: i, len: i + 1, seek_char: 23, BIG_CHAR); |
229 | } |
230 | |
231 | for (i = 1; i < 8; ++i) |
232 | { |
233 | do_test (align: 0, pos: 16 << i, len: 2048, seek_char: 0, SMALL_CHAR); |
234 | do_test (align: i, pos: 16 << i, len: 2048, seek_char: 0, SMALL_CHAR); |
235 | } |
236 | |
237 | for (i = 1; i < 8; ++i) |
238 | { |
239 | do_test (align: i, pos: 64, len: 256, seek_char: 0, SMALL_CHAR); |
240 | do_test (align: i, pos: 64, len: 256, seek_char: 0, BIG_CHAR); |
241 | } |
242 | |
243 | for (i = 0; i < 32; ++i) |
244 | { |
245 | do_test (align: 0, pos: i, len: i + 1, seek_char: 0, SMALL_CHAR); |
246 | do_test (align: 0, pos: i, len: i + 1, seek_char: 0, BIG_CHAR); |
247 | } |
248 | |
249 | do_random_tests (); |
250 | return ret; |
251 | } |
252 | |
253 | #include <support/test-driver.c> |
254 | |