1 /* Test STRCHR functions.
2 Copyright (C) 1999-2021 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 #ifndef WIDE
21 # ifdef USE_FOR_STRCHRNUL
22 # define TEST_NAME "strchrnul"
23 # else
24 # define TEST_NAME "strchr"
25 # endif /* !USE_FOR_STRCHRNUL */
26 #else
27 # ifdef USE_FOR_STRCHRNUL
28 # define TEST_NAME "wcschrnul"
29 # else
30 # define TEST_NAME "wcschr"
31 # endif /* !USE_FOR_STRCHRNUL */
32 #endif /* WIDE */
33 #include "test-string.h"
34
35 #ifndef WIDE
36 # ifdef USE_FOR_STRCHRNUL
37 # define STRCHR strchrnul
38 # define stupid_STRCHR stupid_STRCHRNUL
39 # define simple_STRCHR simple_STRCHRNUL
40 # else
41 # define STRCHR strchr
42 # endif /* !USE_FOR_STRCHRNUL */
43 # define STRLEN strlen
44 # define CHAR char
45 # define BIG_CHAR CHAR_MAX
46 # define MIDDLE_CHAR 127
47 # define SMALL_CHAR 23
48 # define UCHAR unsigned char
49 # define L(s) s
50 #else
51 # include <wchar.h>
52 # ifdef USE_FOR_STRCHRNUL
53 # define STRCHR wcschrnul
54 # define stupid_STRCHR stupid_WCSCHRNUL
55 # define simple_STRCHR simple_WCSCHRNUL
56 # else
57 # define STRCHR wcschr
58 # endif /* !USE_FOR_STRCHRNUL */
59 # define STRLEN wcslen
60 # define CHAR wchar_t
61 # define BIG_CHAR WCHAR_MAX
62 # define MIDDLE_CHAR 1121
63 # define SMALL_CHAR 851
64 # define UCHAR wchar_t
65 # define L(s) L ## s
66 #endif /* WIDE */
67
68 #ifdef USE_FOR_STRCHRNUL
69 # define NULLRET(endptr) endptr
70 #else
71 # define NULLRET(endptr) NULL
72 #endif /* !USE_FOR_STRCHRNUL */
73
74
75 typedef CHAR *(*proto_t) (const CHAR *, int);
76
77 CHAR *
simple_STRCHR(const CHAR * s,int c)78 simple_STRCHR (const CHAR *s, int c)
79 {
80 for (; *s != (CHAR) c; ++s)
81 if (*s == '\0')
82 return NULLRET ((CHAR *) s);
83 return (CHAR *) s;
84 }
85
86 CHAR *
stupid_STRCHR(const CHAR * s,int c)87 stupid_STRCHR (const CHAR *s, int c)
88 {
89 size_t n = STRLEN (s) + 1;
90
91 while (n--)
92 if (*s++ == (CHAR) c)
93 return (CHAR *) s - 1;
94 return NULLRET ((CHAR *) s - 1);
95 }
96
97 IMPL (stupid_STRCHR, 0)
98 IMPL (simple_STRCHR, 0)
99 IMPL (STRCHR, 1)
100
101 static int
check_result(impl_t * impl,const CHAR * s,int c,const CHAR * exp_res)102 check_result (impl_t *impl, const CHAR *s, int c, const CHAR *exp_res)
103 {
104 CHAR *res = CALL (impl, s, c);
105 if (res != exp_res)
106 {
107 error (0, 0, "Wrong result in function %s %#x %p %p", impl->name,
108 c, res, exp_res);
109 ret = 1;
110 return -1;
111 }
112 return 0;
113 }
114
115 static void
do_one_test(impl_t * impl,const CHAR * s,int c,const CHAR * exp_res)116 do_one_test (impl_t *impl, const CHAR *s, int c, const CHAR *exp_res)
117 {
118 if (check_result (impl, s, c, exp_res) < 0)
119 return;
120 }
121
122 static void
do_test(size_t align,size_t pos,size_t len,int seek_char,int max_char)123 do_test (size_t align, size_t pos, size_t len, int seek_char, int max_char)
124 /* For wcschr: align here means align not in bytes,
125 but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t))
126 len for wcschr here isn't in bytes but it's number of wchar_t symbols. */
127 {
128 size_t i;
129 CHAR *result;
130 CHAR *buf = (CHAR *) buf1;
131 align &= 127;
132 if ((align + len) * sizeof (CHAR) >= page_size)
133 return;
134
135 for (i = 0; i < len; ++i)
136 {
137 buf[align + i] = 32 + 23 * i % max_char;
138 if (buf[align + i] == seek_char)
139 buf[align + i] = seek_char + 1;
140 else if (buf[align + i] == 0)
141 buf[align + i] = 1;
142 }
143 buf[align + len] = 0;
144
145 if (pos < len)
146 {
147 buf[align + pos] = seek_char;
148 result = buf + align + pos;
149 }
150 else if (seek_char == 0)
151 result = buf + align + len;
152 else
153 result = NULLRET (buf + align + len);
154
155 FOR_EACH_IMPL (impl, 0)
156 do_one_test (impl, buf + align, seek_char, result);
157 }
158
159 static void
do_random_tests(void)160 do_random_tests (void)
161 {
162 size_t i, j, n, align, pos, len;
163 int seek_char;
164 CHAR *result;
165 UCHAR *p = (UCHAR *) (buf1 + page_size - 512 * sizeof (CHAR));
166
167 for (n = 0; n < ITERATIONS; n++)
168 {
169 /* For wcschr: align here means align not in bytes, but in wchar_ts,
170 in bytes it will equal to align * (sizeof (wchar_t)). */
171 align = random () & 15;
172 pos = random () & 511;
173 seek_char = random () & 255;
174 if (pos + align >= 511)
175 pos = 510 - align - (random () & 7);
176 /* len for wcschr here isn't in bytes but it's number of wchar_t
177 symbols. */
178 len = random () & 511;
179 if ((pos == len && seek_char)
180 || (pos > len && (random () & 1)))
181 len = pos + 1 + (random () & 7);
182 if (len + align >= 512)
183 len = 511 - align - (random () & 7);
184 if (pos == len && seek_char)
185 len = pos + 1;
186 j = (pos > len ? pos : len) + align + 64;
187 if (j > 512)
188 j = 512;
189
190 for (i = 0; i < j; i++)
191 {
192 if (i == pos + align)
193 p[i] = seek_char;
194 else if (i == len + align)
195 p[i] = 0;
196 else
197 {
198 p[i] = random () & 255;
199 if (i < pos + align && p[i] == seek_char)
200 p[i] = seek_char + 13;
201 if (i < len + align && !p[i])
202 {
203 p[i] = seek_char - 13;
204 if (!p[i])
205 p[i] = 140;
206 }
207 }
208 }
209
210 if (pos <= len)
211 result = (CHAR *) (p + pos + align);
212 else if (seek_char == 0)
213 result = (CHAR *) (p + len + align);
214 else
215 result = NULLRET ((CHAR *) (p + len + align));
216
217 FOR_EACH_IMPL (impl, 1)
218 if (CALL (impl, (CHAR *) (p + align), seek_char) != result)
219 {
220 error (0, 0, "Iteration %zd - wrong result in function \
221 %s (align in bytes: %zd, seek_char: %d, len: %zd, pos: %zd) %p != %p, p %p",
222 n, impl->name, align * sizeof (CHAR), seek_char, len, pos,
223 CALL (impl, (CHAR *) (p + align), seek_char), result, p);
224 ret = 1;
225 }
226 }
227 }
228
229 static void
check1(void)230 check1 (void)
231 {
232 CHAR s[] __attribute__((aligned(16))) = L ("\xff");
233 CHAR c = L ('\xfe');
234 CHAR *exp_result = stupid_STRCHR (s, c);
235
236 FOR_EACH_IMPL (impl, 0)
237 check_result (impl, s, c, exp_result);
238 }
239
240 int
test_main(void)241 test_main (void)
242 {
243 size_t i;
244
245 test_init ();
246
247 check1 ();
248
249 printf ("%20s", "");
250 FOR_EACH_IMPL (impl, 0)
251 printf ("\t%s", impl->name);
252 putchar ('\n');
253
254 for (i = 1; i < 8; ++i)
255 {
256 do_test (0, 16 << i, 2048, SMALL_CHAR, MIDDLE_CHAR);
257 do_test (i, 16 << i, 2048, SMALL_CHAR, MIDDLE_CHAR);
258 }
259
260 for (i = 1; i < 8; ++i)
261 {
262 do_test (0, 16 << i, 4096, SMALL_CHAR, MIDDLE_CHAR);
263 do_test (i, 16 << i, 4096, SMALL_CHAR, MIDDLE_CHAR);
264 }
265
266 for (i = 1; i < 8; ++i)
267 {
268 do_test (i, 64, 256, SMALL_CHAR, MIDDLE_CHAR);
269 do_test (i, 64, 256, SMALL_CHAR, BIG_CHAR);
270 }
271
272 for (i = 0; i < 8; ++i)
273 {
274 do_test (16 * i, 256, 512, SMALL_CHAR, MIDDLE_CHAR);
275 do_test (16 * i, 256, 512, SMALL_CHAR, BIG_CHAR);
276 }
277
278 for (i = 0; i < 32; ++i)
279 {
280 do_test (0, i, i + 1, SMALL_CHAR, MIDDLE_CHAR);
281 do_test (0, i, i + 1, SMALL_CHAR, BIG_CHAR);
282 }
283
284 for (i = 1; i < 8; ++i)
285 {
286 do_test (0, 16 << i, 2048, 0, MIDDLE_CHAR);
287 do_test (i, 16 << i, 2048, 0, MIDDLE_CHAR);
288 }
289
290 for (i = 1; i < 8; ++i)
291 {
292 do_test (0, 16 << i, 4096, 0, MIDDLE_CHAR);
293 do_test (i, 16 << i, 4096, 0, MIDDLE_CHAR);
294 }
295
296 for (i = 1; i < 8; ++i)
297 {
298 do_test (i, 64, 256, 0, MIDDLE_CHAR);
299 do_test (i, 64, 256, 0, BIG_CHAR);
300 }
301
302 for (i = 0; i < 8; ++i)
303 {
304 do_test (16 * i, 256, 512, 0, MIDDLE_CHAR);
305 do_test (16 * i, 256, 512, 0, BIG_CHAR);
306 }
307
308 for (i = 0; i < 32; ++i)
309 {
310 do_test (0, i, i + 1, 0, MIDDLE_CHAR);
311 do_test (0, i, i + 1, 0, BIG_CHAR);
312 }
313
314 do_random_tests ();
315 return ret;
316 }
317
318 #include <support/test-driver.c>
319