1/* Test strcat functions.
2 Copyright (C) 1999-2024 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# define TEST_NAME "strcat"
22#else
23# define TEST_NAME "wcscat"
24#endif /* WIDE */
25#include "test-string.h"
26
27#ifndef WIDE
28# define STRCAT strcat
29# define CHAR char
30# define UCHAR unsigned char
31# define sfmt "s"
32# define SIMPLE_STRCAT simple_strcat
33# define STRLEN strlen
34# define STRCMP strcmp
35# define MEMSET memset
36# define MEMCPY memcpy
37# define MEMCMP memcmp
38# define BIG_CHAR CHAR_MAX
39# define SMALL_CHAR 127
40#else
41# include <wchar.h>
42# define STRCAT wcscat
43# define CHAR wchar_t
44# define UCHAR wchar_t
45# define sfmt "ls"
46# define SIMPLE_STRCAT simple_wcscat
47# define STRLEN wcslen
48# define STRCMP wcscmp
49# define MEMSET wmemset
50# define MEMCPY wmemcpy
51# define MEMCMP wmemcmp
52# define BIG_CHAR WCHAR_MAX
53# define SMALL_CHAR 1273
54#endif /* WIDE */
55
56typedef CHAR *(*proto_t) (CHAR *, const CHAR *);
57
58IMPL (STRCAT, 1)
59
60/* Naive implementation to verify results. */
61CHAR *
62SIMPLE_STRCAT (CHAR *dst, const CHAR *src)
63{
64 CHAR *ret = dst;
65 while (*dst++ != '\0');
66 --dst;
67 while ((*dst++ = *src++) != '\0');
68 return ret;
69}
70
71static void
72do_one_test (impl_t *impl, CHAR *dst, const CHAR *src)
73{
74 size_t k = STRLEN (dst);
75 if (CALL (impl, dst, src) != dst)
76 {
77 error (status: 0, errnum: 0, format: "Wrong result in function %s %p %p", impl->name,
78 CALL (impl, dst, src), dst);
79 ret = 1;
80 return;
81 }
82
83 if (STRCMP (dst + k, src) != 0)
84 {
85 error (status: 0, errnum: 0, format: "Wrong result in function %s dst \"%" sfmt "\" src \"%" sfmt "\"",
86 impl->name, dst, src);
87 ret = 1;
88 return;
89 }
90}
91
92static void
93do_test (size_t align1, size_t align2, size_t len1, size_t len2, int max_char)
94{
95 size_t i;
96 CHAR *s1, *s2;
97
98 align1 &= 7;
99 if ((align1 + len1) * sizeof (CHAR) >= page_size)
100 return;
101
102 align2 &= 7;
103 if ((align2 + len1 + len2) * sizeof (CHAR) >= page_size)
104 return;
105
106 s1 = (CHAR *) (buf1) + align1;
107 s2 = (CHAR *) (buf2) + align2;
108
109 for (i = 0; i < len1; ++i)
110 s1[i] = 32 + 23 * i % (max_char - 32);
111 s1[len1] = '\0';
112
113 for (i = 0; i < len2; i++)
114 s2[i] = 32 + 23 * i % (max_char - 32);
115
116 FOR_EACH_IMPL (impl, 0)
117 {
118 s2[len2] = '\0';
119 do_one_test (impl, dst: s2, src: s1);
120 }
121}
122
123static void
124do_random_tests (void)
125{
126 size_t i, j, n, align1, align2, len1, len2;
127 UCHAR *p1 = (UCHAR *) (buf1 + page_size) - 512;
128 UCHAR *p2 = (UCHAR *) (buf2 + page_size) - 512;
129 UCHAR *p3 = (UCHAR *) buf1;
130 UCHAR *res;
131
132 for (n = 0; n < ITERATIONS; n++)
133 {
134 align1 = random () & 31;
135 if (random () & 1)
136 align2 = random () & 31;
137 else
138 align2 = align1 + (random () & 24);
139 len1 = random () & 511;
140 if (len1 + align2 > 512)
141 len2 = random () & 7;
142 else
143 len2 = (512 - len1 - align2) * (random () & (1024 * 1024 - 1))
144 / (1024 * 1024);
145 j = align1;
146 if (align2 + len2 > j)
147 j = align2 + len2;
148 if (len1 + j >= 511)
149 len1 = 510 - j - (random () & 7);
150 if (len1 >= 512)
151 len1 = 0;
152 if (align1 + len1 < 512 - 8)
153 {
154 j = 510 - align1 - len1 - (random () & 31);
155 if (j > 0 && j < 512)
156 align1 += j;
157 }
158 j = len1 + align1 + 64;
159 if (j > 512)
160 j = 512;
161 for (i = 0; i < j; i++)
162 {
163 if (i == len1 + align1)
164 p1[i] = 0;
165 else
166 {
167 p1[i] = random () & BIG_CHAR;
168 if (i >= align1 && i < len1 + align1 && !p1[i])
169 p1[i] = (random () & SMALL_CHAR) + 3;
170 }
171 }
172 for (i = 0; i < len2; i++)
173 {
174 p3[i] = random () & BIG_CHAR;
175 if (!p3[i])
176 p3[i] = (random () & SMALL_CHAR) + 3;
177 }
178 p3[len2] = 0;
179
180 FOR_EACH_IMPL (impl, 1)
181 {
182 MEMSET (p2 - 64, '\1', align2 + 64);
183 MEMSET (p2 + align2 + len2 + 1, '\1', 512 - align2 - len2 - 1);
184 MEMCPY (p2 + align2, p3, len2 + 1);
185 res = (UCHAR *) CALL (impl, (CHAR *) (p2 + align2),
186 (CHAR *) (p1 + align1));
187 if (res != p2 + align2)
188 {
189 error (status: 0, errnum: 0, format: "Iteration %zd - wrong result in function %s (%zd, %zd, %zd %zd) %p != %p",
190 n, impl->name, align1, align2, len1, len2, res,
191 p2 + align2);
192 ret = 1;
193 }
194 for (j = 0; j < align2 + 64; ++j)
195 {
196 if (p2[j - 64] != '\1')
197 {
198 error (status: 0, errnum: 0, format: "Iteration %zd - garbage before, %s (%zd, %zd, %zd, %zd)",
199 n, impl->name, align1, align2, len1, len2);
200 ret = 1;
201 break;
202 }
203 }
204 if (MEMCMP (p2 + align2, p3, len2))
205 {
206 error (status: 0, errnum: 0, format: "Iteration %zd - garbage in string before, %s (%zd, %zd, %zd, %zd)",
207 n, impl->name, align1, align2, len1, len2);
208 ret = 1;
209 }
210 for (j = align2 + len1 + len2 + 1; j < 512; ++j)
211 {
212 if (p2[j] != '\1')
213 {
214 error (status: 0, errnum: 0, format: "Iteration %zd - garbage after, %s (%zd, %zd, %zd, %zd)",
215 n, impl->name, align1, align2, len1, len2);
216 ret = 1;
217 break;
218 }
219 }
220 if (MEMCMP (p1 + align1, p2 + align2 + len2, len1 + 1))
221 {
222 error (status: 0, errnum: 0, format: "Iteration %zd - different strings, %s (%zd, %zd, %zd, %zd)",
223 n, impl->name, align1, align2, len1, len2);
224 ret = 1;
225 }
226 }
227 }
228}
229
230int
231test_main (void)
232{
233 size_t i;
234
235 test_init ();
236
237 printf (format: "%28s", "");
238 FOR_EACH_IMPL (impl, 0)
239 printf (format: "\t%s", impl->name);
240 putchar (c: '\n');
241
242 for (i = 0; i < 16; ++i)
243 {
244 do_test (align1: 0, align2: 0, len1: i, len2: i, SMALL_CHAR);
245 do_test (align1: 0, align2: 0, len1: i, len2: i, BIG_CHAR);
246 do_test (align1: 0, align2: i, len1: i, len2: i, SMALL_CHAR);
247 do_test (align1: i, align2: 0, len1: i, len2: i, BIG_CHAR);
248 }
249
250 for (i = 1; i < 8; ++i)
251 {
252 do_test (align1: 0, align2: 0, len1: 8 << i, len2: 8 << i, SMALL_CHAR);
253 do_test (align1: 8 - i, align2: 2 * i, len1: 8 << i, len2: 8 << i, SMALL_CHAR);
254 do_test (align1: 0, align2: 0, len1: 8 << i, len2: 2 << i, SMALL_CHAR);
255 do_test (align1: 8 - i, align2: 2 * i, len1: 8 << i, len2: 2 << i, SMALL_CHAR);
256 }
257
258 for (i = 1; i < 8; ++i)
259 {
260 do_test (align1: i, align2: 2 * i, len1: 8 << i, len2: 1, SMALL_CHAR);
261 do_test (align1: 2 * i, align2: i, len1: 8 << i, len2: 1, BIG_CHAR);
262 do_test (align1: i, align2: i, len1: 8 << i, len2: 10, SMALL_CHAR);
263 do_test (align1: i, align2: i, len1: 8 << i, len2: 10, BIG_CHAR);
264 }
265
266 do_random_tests ();
267 return ret;
268}
269
270#include <support/test-driver.c>
271

source code of glibc/string/test-strcat.c