1 | /* Test and measure strcpy 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 | #ifdef WIDE |
20 | # include <wchar.h> |
21 | # define CHAR wchar_t |
22 | # define UCHAR wchar_t |
23 | # define sfmt "ls" |
24 | # define BIG_CHAR WCHAR_MAX |
25 | # define SMALL_CHAR 1273 |
26 | # define STRCMP wcscmp |
27 | # define MEMCMP wmemcmp |
28 | # define MEMSET wmemset |
29 | #else |
30 | # define CHAR char |
31 | # define UCHAR unsigned char |
32 | # define sfmt "s" |
33 | # define BIG_CHAR CHAR_MAX |
34 | # define SMALL_CHAR 127 |
35 | # define STRCMP strcmp |
36 | # define MEMCMP memcmp |
37 | # define MEMSET memset |
38 | #endif |
39 | |
40 | #ifndef STRCPY_RESULT |
41 | # define STRCPY_RESULT(dst, len) dst |
42 | # define TEST_MAIN |
43 | # ifndef WIDE |
44 | # define TEST_NAME "strcpy" |
45 | # else |
46 | # define TEST_NAME "wcscpy" |
47 | # endif |
48 | # include "test-string.h" |
49 | # ifndef WIDE |
50 | # define SIMPLE_STRCPY simple_strcpy |
51 | # define STRCPY strcpy |
52 | # else |
53 | # define SIMPLE_STRCPY simple_wcscpy |
54 | # define STRCPY wcscpy |
55 | # endif |
56 | |
57 | CHAR *SIMPLE_STRCPY (CHAR *, const CHAR *); |
58 | |
59 | IMPL (SIMPLE_STRCPY, 0) |
60 | IMPL (STRCPY, 1) |
61 | |
62 | CHAR * |
63 | SIMPLE_STRCPY (CHAR *dst, const CHAR *src) |
64 | { |
65 | CHAR *ret = dst; |
66 | while ((*dst++ = *src++) != '\0'); |
67 | return ret; |
68 | } |
69 | #endif |
70 | |
71 | typedef CHAR *(*proto_t) (CHAR *, const CHAR *); |
72 | |
73 | static void |
74 | do_one_test (impl_t *impl, CHAR *dst, const CHAR *src, |
75 | size_t len __attribute__((unused))) |
76 | { |
77 | if (CALL (impl, dst, src) != STRCPY_RESULT (dst, len)) |
78 | { |
79 | error (status: 0, errnum: 0, format: "Wrong result in function %s %p %p" , impl->name, |
80 | CALL (impl, dst, src), STRCPY_RESULT (dst, len)); |
81 | ret = 1; |
82 | return; |
83 | } |
84 | |
85 | if (STRCMP (dst, src) != 0) |
86 | { |
87 | error (status: 0, errnum: 0, |
88 | format: "Wrong result in function %s dst \"%" sfmt "\" src \"%" sfmt "\"" , |
89 | impl->name, dst, src); |
90 | ret = 1; |
91 | return; |
92 | } |
93 | } |
94 | |
95 | static void |
96 | do_test (size_t align1, size_t align2, size_t len, int max_char) |
97 | { |
98 | size_t i; |
99 | CHAR *s1, *s2; |
100 | /* For wcscpy: align1 and align2 here mean alignment not in bytes, |
101 | but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t)) |
102 | len for wcschr here isn't in bytes but it's number of wchar_t symbols. */ |
103 | align1 &= 7; |
104 | if ((align1 + len) * sizeof (CHAR) >= page_size) |
105 | return; |
106 | |
107 | align2 &= 7; |
108 | if ((align2 + len) * sizeof (CHAR) >= page_size) |
109 | return; |
110 | |
111 | s1 = (CHAR *) (buf1) + align1; |
112 | s2 = (CHAR *) (buf2) + align2; |
113 | |
114 | for (i = 0; i < len; i++) |
115 | s1[i] = 32 + 23 * i % (max_char - 32); |
116 | s1[len] = 0; |
117 | |
118 | FOR_EACH_IMPL (impl, 0) |
119 | do_one_test (impl, dst: s2, src: s1, len); |
120 | } |
121 | |
122 | static void |
123 | do_random_tests (void) |
124 | { |
125 | size_t i, j, n, align1, align2, len; |
126 | UCHAR *p1 = (UCHAR *) (buf1 + page_size) - 512; |
127 | UCHAR *p2 = (UCHAR *) (buf2 + page_size) - 512; |
128 | UCHAR *res; |
129 | |
130 | for (n = 0; n < ITERATIONS; n++) |
131 | { |
132 | /* For wcsrchr: align1 and align2 here mean align not in bytes, |
133 | but in wchar_ts, in bytes it will equal to align * (sizeof |
134 | (wchar_t)). For strrchr we need to check all alignments from |
135 | 0 to 63 since some assembly implementations have separate |
136 | prolog for alignments more 48. */ |
137 | |
138 | align1 = random () & (63 / sizeof (CHAR)); |
139 | if (random () & 1) |
140 | align2 = random () & (63 / sizeof (CHAR)); |
141 | else |
142 | align2 = align1 + (random () & 24); |
143 | len = random () & 511; |
144 | j = align1; |
145 | if (align2 > j) |
146 | j = align2; |
147 | if (len + j >= 511) |
148 | len = 510 - j - (random () & 7); |
149 | j = len + align1 + 64; |
150 | if (j > 512) |
151 | j = 512; |
152 | for (i = 0; i < j; i++) |
153 | { |
154 | if (i == len + align1) |
155 | p1[i] = 0; |
156 | else |
157 | { |
158 | p1[i] = random () & BIG_CHAR; |
159 | if (i >= align1 && i < len + align1 && !p1[i]) |
160 | p1[i] = (random () & SMALL_CHAR) + 3; |
161 | } |
162 | } |
163 | |
164 | FOR_EACH_IMPL (impl, 1) |
165 | { |
166 | MEMSET (p2 - 64, '\1', 512 + 64); |
167 | res = (UCHAR *) CALL (impl, (CHAR *) (p2 + align2), (CHAR *) (p1 + align1)); |
168 | if (res != STRCPY_RESULT (p2 + align2, len)) |
169 | { |
170 | error (status: 0, errnum: 0, format: "Iteration %zd - wrong result in function %s (%zd, %zd, %zd) %p != %p" , |
171 | n, impl->name, align1, align2, len, res, |
172 | STRCPY_RESULT (p2 + align2, len)); |
173 | ret = 1; |
174 | } |
175 | for (j = 0; j < align2 + 64; ++j) |
176 | { |
177 | if (p2[j - 64] != '\1') |
178 | { |
179 | error (status: 0, errnum: 0, format: "Iteration %zd - garbage before, %s (%zd, %zd, %zd)" , |
180 | n, impl->name, align1, align2, len); |
181 | ret = 1; |
182 | break; |
183 | } |
184 | } |
185 | for (j = align2 + len + 1; j < 512; ++j) |
186 | { |
187 | if (p2[j] != '\1') |
188 | { |
189 | error (status: 0, errnum: 0, format: "Iteration %zd - garbage after, %s (%zd, %zd, %zd)" , |
190 | n, impl->name, align1, align2, len); |
191 | ret = 1; |
192 | break; |
193 | } |
194 | } |
195 | if (MEMCMP (p1 + align1, p2 + align2, len + 1)) |
196 | { |
197 | error (status: 0, errnum: 0, format: "Iteration %zd - different strings, %s (%zd, %zd, %zd)" , |
198 | n, impl->name, align1, align2, len); |
199 | ret = 1; |
200 | } |
201 | } |
202 | } |
203 | } |
204 | |
205 | int |
206 | test_main (void) |
207 | { |
208 | size_t i; |
209 | |
210 | test_init (); |
211 | |
212 | printf (format: "%23s" , "" ); |
213 | FOR_EACH_IMPL (impl, 0) |
214 | printf (format: "\t%s" , impl->name); |
215 | putchar (c: '\n'); |
216 | |
217 | for (i = 0; i < 16; ++i) |
218 | { |
219 | do_test (align1: 0, align2: 0, len: i, SMALL_CHAR); |
220 | do_test (align1: 0, align2: 0, len: i, BIG_CHAR); |
221 | do_test (align1: 0, align2: i, len: i, SMALL_CHAR); |
222 | do_test (align1: i, align2: 0, len: i, BIG_CHAR); |
223 | } |
224 | |
225 | for (i = 1; i < 8; ++i) |
226 | { |
227 | do_test (align1: 0, align2: 0, len: 8 << i, SMALL_CHAR); |
228 | do_test (align1: 8 - i, align2: 2 * i, len: 8 << i, SMALL_CHAR); |
229 | } |
230 | |
231 | for (i = 1; i < 8; ++i) |
232 | { |
233 | do_test (align1: i, align2: 2 * i, len: 8 << i, SMALL_CHAR); |
234 | do_test (align1: 2 * i, align2: i, len: 8 << i, BIG_CHAR); |
235 | do_test (align1: i, align2: i, len: 8 << i, SMALL_CHAR); |
236 | do_test (align1: i, align2: i, len: 8 << i, BIG_CHAR); |
237 | } |
238 | |
239 | do_random_tests (); |
240 | return ret; |
241 | } |
242 | |
243 | #include <support/test-driver.c> |
244 | |