1 | /* Test and measure strcasecmp 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 | #include <locale.h> |
20 | #include <ctype.h> |
21 | #define TEST_MAIN |
22 | #define TEST_NAME "strcasecmp" |
23 | #include "test-string.h" |
24 | |
25 | typedef int (*proto_t) (const char *, const char *); |
26 | static int simple_strcasecmp (const char *, const char *); |
27 | static int stupid_strcasecmp (const char *, const char *); |
28 | |
29 | IMPL (stupid_strcasecmp, 0) |
30 | IMPL (simple_strcasecmp, 0) |
31 | IMPL (strcasecmp, 1) |
32 | |
33 | static int |
34 | simple_strcasecmp (const char *s1, const char *s2) |
35 | { |
36 | int ret; |
37 | |
38 | while ((ret = ((unsigned char) tolower (*s1) |
39 | - (unsigned char) tolower (*s2))) == 0 |
40 | && *s1++) |
41 | ++s2; |
42 | return ret; |
43 | } |
44 | |
45 | static int |
46 | stupid_strcasecmp (const char *s1, const char *s2) |
47 | { |
48 | size_t ns1 = strlen (s1) + 1, ns2 = strlen (s2) + 1; |
49 | size_t n = ns1 < ns2 ? ns1 : ns2; |
50 | int ret = 0; |
51 | |
52 | while (n--) |
53 | { |
54 | if ((ret = ((unsigned char) tolower (*s1) |
55 | - (unsigned char) tolower (*s2))) != 0) |
56 | break; |
57 | ++s1; |
58 | ++s2; |
59 | } |
60 | return ret; |
61 | } |
62 | |
63 | static void |
64 | do_one_test (impl_t *impl, const char *s1, const char *s2, int exp_result) |
65 | { |
66 | int result = CALL (impl, s1, s2); |
67 | if ((exp_result == 0 && result != 0) |
68 | || (exp_result < 0 && result >= 0) |
69 | || (exp_result > 0 && result <= 0)) |
70 | { |
71 | error (status: 0, errnum: 0, format: "Wrong result in function %s %d %d" , impl->name, |
72 | result, exp_result); |
73 | ret = 1; |
74 | return; |
75 | } |
76 | } |
77 | |
78 | static void |
79 | do_test (size_t align1, size_t align2, size_t len, int max_char, |
80 | int exp_result) |
81 | { |
82 | size_t i; |
83 | char *s1, *s2; |
84 | |
85 | if (len == 0) |
86 | return; |
87 | |
88 | align1 &= 7; |
89 | if (align1 + len + 1 >= page_size) |
90 | return; |
91 | |
92 | align2 &= 7; |
93 | if (align2 + len + 1 >= page_size) |
94 | return; |
95 | |
96 | s1 = (char *) (buf1 + align1); |
97 | s2 = (char *) (buf2 + align2); |
98 | |
99 | for (i = 0; i < len; i++) |
100 | { |
101 | s1[i] = toupper (1 + 23 * i % max_char); |
102 | s2[i] = tolower (s1[i]); |
103 | } |
104 | |
105 | s1[len] = s2[len] = 0; |
106 | s1[len + 1] = 23; |
107 | s2[len + 1] = 24 + exp_result; |
108 | if ((s2[len - 1] == 'z' && exp_result == -1) |
109 | || (s2[len - 1] == 'a' && exp_result == 1)) |
110 | s1[len - 1] += exp_result; |
111 | else |
112 | s2[len - 1] -= exp_result; |
113 | |
114 | FOR_EACH_IMPL (impl, 0) |
115 | do_one_test (impl, s1, s2, exp_result); |
116 | } |
117 | |
118 | static void |
119 | do_random_tests (void) |
120 | { |
121 | size_t i, j, n, align1, align2, pos, len1, len2; |
122 | int result; |
123 | long r; |
124 | unsigned char *p1 = buf1 + page_size - 512; |
125 | unsigned char *p2 = buf2 + page_size - 512; |
126 | |
127 | for (n = 0; n < ITERATIONS; n++) |
128 | { |
129 | align1 = random () & 31; |
130 | if (random () & 1) |
131 | align2 = random () & 31; |
132 | else |
133 | align2 = align1 + (random () & 24); |
134 | pos = random () & 511; |
135 | j = align1 > align2 ? align1 : align2; |
136 | if (pos + j >= 511) |
137 | pos = 510 - j - (random () & 7); |
138 | len1 = random () & 511; |
139 | if (pos >= len1 && (random () & 1)) |
140 | len1 = pos + (random () & 7); |
141 | if (len1 + j >= 512) |
142 | len1 = 511 - j - (random () & 7); |
143 | if (pos >= len1) |
144 | len2 = len1; |
145 | else |
146 | len2 = len1 + (len1 != 511 - j ? random () % (511 - j - len1) : 0); |
147 | j = (pos > len2 ? pos : len2) + align1 + 64; |
148 | if (j > 512) |
149 | j = 512; |
150 | for (i = 0; i < j; ++i) |
151 | { |
152 | p1[i] = tolower (random () & 255); |
153 | if (i < len1 + align1 && !p1[i]) |
154 | { |
155 | p1[i] = tolower (random () & 255); |
156 | if (!p1[i]) |
157 | p1[i] = tolower (1 + (random () & 127)); |
158 | } |
159 | } |
160 | for (i = 0; i < j; ++i) |
161 | { |
162 | p2[i] = toupper (random () & 255); |
163 | if (i < len2 + align2 && !p2[i]) |
164 | { |
165 | p2[i] = toupper (random () & 255); |
166 | if (!p2[i]) |
167 | toupper (p2[i] = 1 + (random () & 127)); |
168 | } |
169 | } |
170 | |
171 | result = 0; |
172 | memcpy (p2 + align2, p1 + align1, pos); |
173 | if (pos < len1) |
174 | { |
175 | if (tolower (p2[align2 + pos]) == p1[align1 + pos]) |
176 | { |
177 | p2[align2 + pos] = toupper (random () & 255); |
178 | if (tolower (p2[align2 + pos]) == p1[align1 + pos]) |
179 | p2[align2 + pos] = toupper (p1[align1 + pos] |
180 | + 3 + (random () & 127)); |
181 | } |
182 | |
183 | if (p1[align1 + pos] < tolower (p2[align2 + pos])) |
184 | result = -1; |
185 | else |
186 | result = 1; |
187 | } |
188 | p1[len1 + align1] = 0; |
189 | p2[len2 + align2] = 0; |
190 | |
191 | FOR_EACH_IMPL (impl, 1) |
192 | { |
193 | r = CALL (impl, (char *) (p1 + align1), (char *) (p2 + align2)); |
194 | /* Test whether on 64-bit architectures where ABI requires |
195 | callee to promote has the promotion been done. */ |
196 | asm ("" : "=g" (r) : "0" (r)); |
197 | if ((r == 0 && result) |
198 | || (r < 0 && result >= 0) |
199 | || (r > 0 && result <= 0)) |
200 | { |
201 | error (status: 0, errnum: 0, format: "Iteration %zd - wrong result in function %s (%zd, %zd, %zd, %zd, %zd) %ld != %d, p1 %p p2 %p" , |
202 | n, impl->name, align1, align2, len1, len2, pos, r, result, p1, p2); |
203 | ret = 1; |
204 | } |
205 | } |
206 | } |
207 | } |
208 | |
209 | static void |
210 | test_locale (const char *locale) |
211 | { |
212 | size_t i; |
213 | |
214 | if (setlocale (LC_CTYPE, locale) == NULL) |
215 | { |
216 | error (status: 0, errnum: 0, format: "cannot set locale \"%s\"" , locale); |
217 | ret = 1; |
218 | } |
219 | |
220 | printf (format: "%-23s" , locale); |
221 | FOR_EACH_IMPL (impl, 0) |
222 | printf (format: "\t%s" , impl->name); |
223 | putchar (c: '\n'); |
224 | |
225 | for (i = 1; i < 16; ++i) |
226 | { |
227 | do_test (align1: i, align2: i, len: i, max_char: 127, exp_result: 0); |
228 | do_test (align1: i, align2: i, len: i, max_char: 127, exp_result: 1); |
229 | do_test (align1: i, align2: i, len: i, max_char: 127, exp_result: -1); |
230 | } |
231 | |
232 | for (i = 1; i < 10; ++i) |
233 | { |
234 | do_test (align1: 0, align2: 0, len: 2 << i, max_char: 127, exp_result: 0); |
235 | do_test (align1: 0, align2: 0, len: 2 << i, max_char: 254, exp_result: 0); |
236 | do_test (align1: 0, align2: 0, len: 2 << i, max_char: 127, exp_result: 1); |
237 | do_test (align1: 0, align2: 0, len: 2 << i, max_char: 254, exp_result: 1); |
238 | do_test (align1: 0, align2: 0, len: 2 << i, max_char: 127, exp_result: -1); |
239 | do_test (align1: 0, align2: 0, len: 2 << i, max_char: 254, exp_result: -1); |
240 | } |
241 | |
242 | for (i = 1; i < 8; ++i) |
243 | { |
244 | do_test (align1: i, align2: 2 * i, len: 8 << i, max_char: 127, exp_result: 0); |
245 | do_test (align1: 2 * i, align2: i, len: 8 << i, max_char: 254, exp_result: 0); |
246 | do_test (align1: i, align2: 2 * i, len: 8 << i, max_char: 127, exp_result: 1); |
247 | do_test (align1: 2 * i, align2: i, len: 8 << i, max_char: 254, exp_result: 1); |
248 | do_test (align1: i, align2: 2 * i, len: 8 << i, max_char: 127, exp_result: -1); |
249 | do_test (align1: 2 * i, align2: i, len: 8 << i, max_char: 254, exp_result: -1); |
250 | } |
251 | |
252 | do_random_tests (); |
253 | } |
254 | |
255 | int |
256 | test_main (void) |
257 | { |
258 | test_init (); |
259 | |
260 | test_locale (locale: "C" ); |
261 | test_locale (locale: "en_US.ISO-8859-1" ); |
262 | test_locale (locale: "en_US.UTF-8" ); |
263 | test_locale (locale: "tr_TR.ISO-8859-9" ); |
264 | test_locale (locale: "tr_TR.UTF-8" ); |
265 | |
266 | return ret; |
267 | } |
268 | |
269 | #include <support/test-driver.c> |
270 | |