1 /* Test and measure strdup functions.
2 Copyright (C) 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 #include <support/check.h>
20
21 #ifdef WIDE
22 # include <wchar.h>
23 # define CHAR wchar_t
24 # define sfmt "ls"
25 # define BIG_CHAR WCHAR_MAX
26 # define SMALL_CHAR 1273
27 # define STRCMP wcscmp
28 # define MEMCMP wmemcmp
29 # define MEMSET wmemset
30 # define TCS TEST_COMPARE_STRING_WIDE
31 #else
32 # define CHAR char
33 # define sfmt "s"
34 # define BIG_CHAR CHAR_MAX
35 # define SMALL_CHAR 127
36 # define STRCMP strcmp
37 # define MEMCMP memcmp
38 # define MEMSET memset
39 # define TCS TEST_COMPARE_STRING
40 #endif
41
42 #ifndef STRDUP_RESULT
43 # define STRDUP_RESULT(dst, len) dst
44 # define TEST_MAIN
45 # ifndef WIDE
46 # define TEST_NAME "strdup"
47 # else
48 # define TEST_NAME "wcsdup"
49 # endif
50 # include "test-string.h"
51 # ifndef WIDE
52 # define STRDUP strdup
53 # else
54 # define STRDUP wcsdup
55 # endif
56 #endif
57
58 typedef CHAR *(*proto_t) (const CHAR *);
59
60 static void
61 do_zero_len_test (void)
62 {
63 CHAR src[1] = { '\0' };
64 CHAR *dst = STRDUP (src);
65
66 TCS (dst, src);
67 free (dst);
68 }
69
70 static void
71 do_one_test (const CHAR *src,
72 size_t len __attribute__((unused)))
73 {
74 CHAR *dst = STRDUP (src);
75
76 if (STRCMP (dst, src) != 0)
77 {
78 error (0, 0,
79 "Wrong result in function %s dst \"%" sfmt "\" src \"%" sfmt "\"",
80 TEST_NAME, dst, src);
81 ret = 1;
82 free (dst);
83 return;
84 }
85 free (dst);
86 }
87
88 static void
89 do_test (size_t align1, size_t align2, size_t len, int max_char)
90 {
91 size_t i;
92 CHAR *s1;
93 /* For wcsdup: align1 and align2 here mean alignment not in bytes,
94 but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t))
95 len for wcschr here isn't in bytes but it's number of wchar_t symbols. */
96 align1 &= 7;
97 if ((align1 + len) * sizeof (CHAR) >= page_size)
98 return;
99
100 align2 &= 7;
101 if ((align2 + len) * sizeof (CHAR) >= page_size)
102 return;
103
104 s1 = (CHAR *) (buf1) + align1;
105
106 for (i = 0; i < len; i++)
107 s1[i] = 32 + 23 * i % (max_char - 32);
108 s1[len] = 0;
109
110 do_one_test (s1, len);
111 }
112
113 static void
114 do_random_tests (void)
115 {
116 size_t i, j, n, align1, align2, len;
117 CHAR *p1 = (CHAR *)(buf1 + page_size) - 512;
118 CHAR *res;
119
120 for (n = 0; n < ITERATIONS; n++)
121 {
122 /* align1 and align2 are expressed as wchar_t and not in bytes for wide
123 char test, and thus it will be equal to align times wchar_t size.
124
125 For non wide version we need to check all alignments from 0 to 63
126 since some assembly implementations have separate prolog for alignments
127 more 48. */
128
129 align1 = random () & (63 / sizeof (CHAR));
130 if (random () & 1)
131 align2 = random () & (63 / sizeof (CHAR));
132 else
133 align2 = align1 + (random () & 24);
134 len = random () & 511;
135 j = align1;
136 if (align2 > j)
137 j = align2;
138 if (len + j >= 511)
139 len = 510 - j - (random () & 7);
140 j = len + align1 + 64;
141 if (j > 512)
142 j = 512;
143 for (i = 0; i < j; i++)
144 {
145 if (i == len + align1)
146 p1[i] = 0;
147 else
148 {
149 p1[i] = random () & BIG_CHAR;
150 if (i >= align1 && i < len + align1 && !p1[i])
151 p1[i] = (random () & SMALL_CHAR) + 3;
152 }
153 }
154
155 res = STRDUP(p1 + align1);
156 TCS (res, (p1 + align1));
157 free (res);
158 }
159 }
160
161
162 int
163 test_main (void)
164 {
165 size_t i;
166
167 test_init ();
168
169 printf ("%23s", "");
170 printf ("\t%s", TEST_NAME);
171 putchar ('\n');
172
173 for (i = 0; i < 16; ++i)
174 {
175 do_test (0, 0, i, SMALL_CHAR);
176 do_test (0, 0, i, BIG_CHAR);
177 do_test (0, i, i, SMALL_CHAR);
178 do_test (i, 0, i, BIG_CHAR);
179 }
180
181 for (i = 1; i < 8; ++i)
182 {
183 do_test (0, 0, 8 << i, SMALL_CHAR);
184 do_test (8 - i, 2 * i, 8 << i, SMALL_CHAR);
185 }
186
187 for (i = 1; i < 8; ++i)
188 {
189 do_test (i, 2 * i, 8 << i, SMALL_CHAR);
190 do_test (2 * i, i, 8 << i, BIG_CHAR);
191 do_test (i, i, 8 << i, SMALL_CHAR);
192 do_test (i, i, 8 << i, BIG_CHAR);
193 }
194
195 do_zero_len_test ();
196 do_random_tests ();
197
198 return ret;
199 }
200
201 #include <support/test-driver.c>