1 /* Test and measure strcpy functions.
2 Copyright (C) 1999-2023 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 STRCPY strcpy
51 # else
52 # define STRCPY wcscpy
53 # endif
54
55 IMPL (STRCPY, 1)
56
57 /* Also check the generic implementation. */
58 #undef STRCPY
59 #undef libc_hidden_builtin_def
60 #define libc_hidden_builtin_def(a)
61 #undef libc_hidden_def
62 #define libc_hidden_def(a)
63 #undef weak_alias
64 #define weak_alias(a,b)
65 #undef attribute_hidden
66 #define attribute_hidden
67 # ifndef WIDE
68 # define STPCPY __stpcpy_default
69 # include "string/stpcpy.c"
70 # define STRCPY __strcpy_default
71 # define __stpcpy __stpcpy_default
72 # include "string/strcpy.c"
73 IMPL (__strcpy_default, 1)
74 # else
75 # define __wcslen wcslen
76 # define __wmemcpy wmemcpy
77 # define WCSCPY __wcscpy_default
78 # include "wcsmbs/wcscpy.c"
79 IMPL (__wcscpy_default, 1)
80 # endif
81 #endif
82
83 typedef CHAR *(*proto_t) (CHAR *, const CHAR *);
84
85 static void
86 do_one_test (impl_t *impl, CHAR *dst, const CHAR *src,
87 size_t len __attribute__((unused)))
88 {
89 if (CALL (impl, dst, src) != STRCPY_RESULT (dst, len))
90 {
91 error (0, 0, "Wrong result in function %s %p %p", impl->name,
92 CALL (impl, dst, src), STRCPY_RESULT (dst, len));
93 ret = 1;
94 return;
95 }
96
97 if (STRCMP (dst, src) != 0)
98 {
99 error (0, 0,
100 "Wrong result in function %s dst \"%" sfmt "\" src \"%" sfmt "\"",
101 impl->name, dst, src);
102 ret = 1;
103 return;
104 }
105 }
106
107 static void
108 do_test (size_t align1, size_t align2, size_t len, int max_char)
109 {
110 size_t i;
111 CHAR *s1, *s2;
112 /* For wcscpy: align1 and align2 here mean alignment not in bytes,
113 but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t))
114 len for wcschr here isn't in bytes but it's number of wchar_t symbols. */
115 align1 &= 7;
116 if ((align1 + len) * sizeof (CHAR) >= page_size)
117 return;
118
119 align2 &= 7;
120 if ((align2 + len) * sizeof (CHAR) >= page_size)
121 return;
122
123 s1 = (CHAR *) (buf1) + align1;
124 s2 = (CHAR *) (buf2) + align2;
125
126 for (i = 0; i < len; i++)
127 s1[i] = 32 + 23 * i % (max_char - 32);
128 s1[len] = 0;
129
130 FOR_EACH_IMPL (impl, 0)
131 do_one_test (impl, s2, s1, len);
132 }
133
134 static void
135 do_random_tests (void)
136 {
137 size_t i, j, n, align1, align2, len;
138 UCHAR *p1 = (UCHAR *) (buf1 + page_size) - 512;
139 UCHAR *p2 = (UCHAR *) (buf2 + page_size) - 512;
140 UCHAR *res;
141
142 for (n = 0; n < ITERATIONS; n++)
143 {
144 /* For wcsrchr: align1 and align2 here mean align not in bytes,
145 but in wchar_ts, in bytes it will equal to align * (sizeof
146 (wchar_t)). For strrchr we need to check all alignments from
147 0 to 63 since some assembly implementations have separate
148 prolog for alignments more 48. */
149
150 align1 = random () & (63 / sizeof (CHAR));
151 if (random () & 1)
152 align2 = random () & (63 / sizeof (CHAR));
153 else
154 align2 = align1 + (random () & 24);
155 len = random () & 511;
156 j = align1;
157 if (align2 > j)
158 j = align2;
159 if (len + j >= 511)
160 len = 510 - j - (random () & 7);
161 j = len + align1 + 64;
162 if (j > 512)
163 j = 512;
164 for (i = 0; i < j; i++)
165 {
166 if (i == len + align1)
167 p1[i] = 0;
168 else
169 {
170 p1[i] = random () & BIG_CHAR;
171 if (i >= align1 && i < len + align1 && !p1[i])
172 p1[i] = (random () & SMALL_CHAR) + 3;
173 }
174 }
175
176 FOR_EACH_IMPL (impl, 1)
177 {
178 MEMSET (p2 - 64, '\1', 512 + 64);
179 res = (UCHAR *) CALL (impl, (CHAR *) (p2 + align2), (CHAR *) (p1 + align1));
180 if (res != STRCPY_RESULT (p2 + align2, len))
181 {
182 error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd) %p != %p",
183 n, impl->name, align1, align2, len, res,
184 STRCPY_RESULT (p2 + align2, len));
185 ret = 1;
186 }
187 for (j = 0; j < align2 + 64; ++j)
188 {
189 if (p2[j - 64] != '\1')
190 {
191 error (0, 0, "Iteration %zd - garbage before, %s (%zd, %zd, %zd)",
192 n, impl->name, align1, align2, len);
193 ret = 1;
194 break;
195 }
196 }
197 for (j = align2 + len + 1; j < 512; ++j)
198 {
199 if (p2[j] != '\1')
200 {
201 error (0, 0, "Iteration %zd - garbage after, %s (%zd, %zd, %zd)",
202 n, impl->name, align1, align2, len);
203 ret = 1;
204 break;
205 }
206 }
207 if (MEMCMP (p1 + align1, p2 + align2, len + 1))
208 {
209 error (0, 0, "Iteration %zd - different strings, %s (%zd, %zd, %zd)",
210 n, impl->name, align1, align2, len);
211 ret = 1;
212 }
213 }
214 }
215 }
216
217 int
218 test_main (void)
219 {
220 size_t i;
221
222 test_init ();
223
224 printf ("%23s", "");
225 FOR_EACH_IMPL (impl, 0)
226 printf ("\t%s", impl->name);
227 putchar ('\n');
228
229 for (i = 0; i < 16; ++i)
230 {
231 do_test (0, 0, i, SMALL_CHAR);
232 do_test (0, 0, i, BIG_CHAR);
233 do_test (0, i, i, SMALL_CHAR);
234 do_test (i, 0, i, BIG_CHAR);
235 }
236
237 for (i = 1; i < 8; ++i)
238 {
239 do_test (0, 0, 8 << i, SMALL_CHAR);
240 do_test (8 - i, 2 * i, 8 << i, SMALL_CHAR);
241 }
242
243 for (i = 1; i < 8; ++i)
244 {
245 do_test (i, 2 * i, 8 << i, SMALL_CHAR);
246 do_test (2 * i, i, 8 << i, BIG_CHAR);
247 do_test (i, i, 8 << i, SMALL_CHAR);
248 do_test (i, i, 8 << i, BIG_CHAR);
249 }
250
251 do_random_tests ();
252 return ret;
253 }
254
255 #include <support/test-driver.c>