1 | /* Test and measure STRCHR functions. |
2 | Copyright (C) 1999-2022 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 SIMPLE_STRRCHR simple_wcsrchr |
30 | # define STRRCHR wcsrchr |
31 | # define CHAR wchar_t |
32 | # define UCHAR wchar_t |
33 | # define BIG_CHAR WCHAR_MAX |
34 | # define SMALL_CHAR 1273 |
35 | #else |
36 | # define SIMPLE_STRRCHR simple_strrchr |
37 | # define STRRCHR strrchr |
38 | # define CHAR char |
39 | # define UCHAR unsigned char |
40 | # define BIG_CHAR CHAR_MAX |
41 | # define SMALL_CHAR 127 |
42 | #endif |
43 | |
44 | typedef CHAR *(*proto_t) (const CHAR *, int); |
45 | CHAR *SIMPLE_STRRCHR (const CHAR *, int); |
46 | |
47 | IMPL (SIMPLE_STRRCHR, 0) |
48 | IMPL (STRRCHR, 1) |
49 | |
50 | CHAR * |
51 | SIMPLE_STRRCHR (const CHAR *s, int c) |
52 | { |
53 | const CHAR *ret = NULL; |
54 | |
55 | for (; *s != '\0'; ++s) |
56 | if (*s == (CHAR) c) |
57 | ret = s; |
58 | |
59 | return (CHAR *) (c == '\0' ? s : ret); |
60 | } |
61 | |
62 | static void |
63 | do_one_test (impl_t *impl, const CHAR *s, int c, CHAR *exp_res) |
64 | { |
65 | CHAR *res = CALL (impl, s, c); |
66 | if (res != exp_res) |
67 | { |
68 | error (status: 0, errnum: 0, format: "Wrong result in function %s %p %p" , impl->name, |
69 | res, exp_res); |
70 | ret = 1; |
71 | return; |
72 | } |
73 | } |
74 | |
75 | static void |
76 | do_test (size_t align, size_t pos, size_t len, int seek_char, int max_char) |
77 | /* For wcsrchr: align here means align not in bytes, |
78 | but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t)) |
79 | len for wcschr here isn't in bytes but it's number of wchar_t symbols. */ |
80 | { |
81 | size_t i; |
82 | CHAR *result; |
83 | CHAR *buf = (CHAR *) buf1; |
84 | |
85 | align &= 7; |
86 | if ( (align + len) * sizeof (CHAR) >= page_size) |
87 | return; |
88 | |
89 | for (i = 0; i < len; ++i) |
90 | { |
91 | buf[align + i] = (random () * random ()) & max_char; |
92 | if (!buf[align + i]) |
93 | buf[align + i] = (random () * random ()) & max_char; |
94 | if (!buf[align + i]) |
95 | buf[align + i] = 1; |
96 | if ((i > pos || pos >= len) && buf[align + i] == seek_char) |
97 | buf[align + i] = seek_char + 10 + (random () & 15); |
98 | } |
99 | buf[align + len] = 0; |
100 | |
101 | if (pos < len) |
102 | { |
103 | buf[align + pos] = seek_char; |
104 | result = (CHAR *) (buf + align + pos); |
105 | } |
106 | else if (seek_char == 0) |
107 | result = (CHAR *) (buf + align + len); |
108 | else |
109 | result = NULL; |
110 | |
111 | FOR_EACH_IMPL (impl, 0) |
112 | do_one_test (impl, s: (CHAR *) (buf + align), c: seek_char, exp_res: result); |
113 | } |
114 | |
115 | static void |
116 | do_random_tests (void) |
117 | { |
118 | size_t i, j, n, align, pos, len; |
119 | int seek_char; |
120 | CHAR *result; |
121 | UCHAR *p = (UCHAR *) (buf1 + page_size) - 512; |
122 | |
123 | for (n = 0; n < ITERATIONS; n++) |
124 | { |
125 | align = random () & (63 / sizeof (CHAR)); |
126 | /* For wcsrchr: align here means align not in bytes, but in wchar_ts, |
127 | in bytes it will equal to align * (sizeof (wchar_t)). |
128 | For strrchr we need to check all alignments from 0 to 63 since |
129 | some assembly implementations have separate prolog for alignments |
130 | more 48. */ |
131 | pos = random () & 511; |
132 | if (pos + align >= 511) |
133 | pos = 510 - align - (random () & 7); |
134 | len = random () & 511; |
135 | /* len for wcschr here isn't in bytes but it's number of wchar_t |
136 | symbols. */ |
137 | if (pos >= len) |
138 | len = pos + (random () & 7); |
139 | if (len + align >= 512) |
140 | len = 511 - align - (random () & 7); |
141 | seek_char = random () & 255; |
142 | if (seek_char && pos == len) |
143 | { |
144 | if (pos) |
145 | --pos; |
146 | else |
147 | ++len; |
148 | } |
149 | j = len + align + 64; |
150 | if (j > 512) |
151 | j = 512; |
152 | |
153 | for (i = 0; i < j; i++) |
154 | { |
155 | if (i == pos + align) |
156 | p[i] = seek_char; |
157 | else if (i == len + align) |
158 | p[i] = 0; |
159 | else |
160 | { |
161 | p[i] = random () & 255; |
162 | if (((i > pos + align && i < len + align) || pos > len) |
163 | && p[i] == seek_char) |
164 | p[i] = seek_char + 13; |
165 | if (i < len + align && !p[i]) |
166 | { |
167 | p[i] = seek_char - 13; |
168 | if (!p[i]) |
169 | p[i] = 140; |
170 | } |
171 | } |
172 | } |
173 | |
174 | if (pos <= len) |
175 | result = (CHAR *) (p + pos + align); |
176 | else if (seek_char == 0) |
177 | result = (CHAR *) (p + len + align); |
178 | else |
179 | result = NULL; |
180 | |
181 | FOR_EACH_IMPL (impl, 1) |
182 | if (CALL (impl, (CHAR *) (p + align), seek_char) != result) |
183 | { |
184 | error (status: 0, errnum: 0, format: "Iteration %zd - wrong result in function %s (%zd, %d, %zd, %zd) %p != %p, p %p" , |
185 | n, impl->name, align, seek_char, len, pos, |
186 | CALL (impl, (CHAR *) (p + align), seek_char), result, p); |
187 | ret = 1; |
188 | } |
189 | } |
190 | } |
191 | |
192 | int |
193 | test_main (void) |
194 | { |
195 | size_t i; |
196 | |
197 | test_init (); |
198 | |
199 | printf (format: "%20s" , "" ); |
200 | FOR_EACH_IMPL (impl, 0) |
201 | printf (format: "\t%s" , impl->name); |
202 | putchar (c: '\n'); |
203 | |
204 | for (i = 1; i < 8; ++i) |
205 | { |
206 | do_test (align: 0, pos: 16 << i, len: 2048, seek_char: 23, SMALL_CHAR); |
207 | do_test (align: i, pos: 16 << i, len: 2048, seek_char: 23, SMALL_CHAR); |
208 | } |
209 | |
210 | for (i = 1; i < 8; ++i) |
211 | { |
212 | do_test (align: i, pos: 64, len: 256, seek_char: 23, SMALL_CHAR); |
213 | do_test (align: i, pos: 64, len: 256, seek_char: 23, BIG_CHAR); |
214 | } |
215 | |
216 | for (i = 0; i < 32; ++i) |
217 | { |
218 | do_test (align: 0, pos: i, len: i + 1, seek_char: 23, SMALL_CHAR); |
219 | do_test (align: 0, pos: i, len: i + 1, seek_char: 23, BIG_CHAR); |
220 | } |
221 | |
222 | for (i = 1; i < 8; ++i) |
223 | { |
224 | do_test (align: 0, pos: 16 << i, len: 2048, seek_char: 0, SMALL_CHAR); |
225 | do_test (align: i, pos: 16 << i, len: 2048, seek_char: 0, SMALL_CHAR); |
226 | } |
227 | |
228 | for (i = 1; i < 8; ++i) |
229 | { |
230 | do_test (align: i, pos: 64, len: 256, seek_char: 0, SMALL_CHAR); |
231 | do_test (align: i, pos: 64, len: 256, seek_char: 0, BIG_CHAR); |
232 | } |
233 | |
234 | for (i = 0; i < 32; ++i) |
235 | { |
236 | do_test (align: 0, pos: i, len: i + 1, seek_char: 0, SMALL_CHAR); |
237 | do_test (align: 0, pos: i, len: i + 1, seek_char: 0, BIG_CHAR); |
238 | } |
239 | |
240 | do_random_tests (); |
241 | return ret; |
242 | } |
243 | |
244 | #include <support/test-driver.c> |
245 | |