1/* Test and measure strdup functions.
2 Copyright (C) 2023-2024 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#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
58typedef CHAR *(*proto_t) (const CHAR *);
59
60static void
61do_zero_len_test (void)
62{
63 CHAR src[1] = { '\0' };
64 CHAR *dst = STRDUP (s: src);
65
66 TCS (dst, src);
67 free (ptr: dst);
68}
69
70static void
71do_one_test (const CHAR *src,
72 size_t len __attribute__((unused)))
73{
74 CHAR *dst = STRDUP (s: src);
75
76 if (STRCMP (dst, src) != 0)
77 {
78 error (status: 0, errnum: 0,
79 format: "Wrong result in function %s dst \"%" sfmt "\" src \"%" sfmt "\"",
80 TEST_NAME, dst, src);
81 ret = 1;
82 free (ptr: dst);
83 return;
84 }
85 free (ptr: dst);
86}
87
88static void
89do_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 (src: s1, len);
111}
112
113static void
114do_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(s: p1 + align1);
156 TCS (res, (p1 + align1));
157 free (ptr: res);
158 }
159}
160
161
162int
163test_main (void)
164{
165 size_t i;
166
167 test_init ();
168
169 printf (format: "%23s", "");
170 printf (format: "\t%s", TEST_NAME);
171 putchar (c: '\n');
172
173 for (i = 0; i < 16; ++i)
174 {
175 do_test (align1: 0, align2: 0, len: i, SMALL_CHAR);
176 do_test (align1: 0, align2: 0, len: i, BIG_CHAR);
177 do_test (align1: 0, align2: i, len: i, SMALL_CHAR);
178 do_test (align1: i, align2: 0, len: i, BIG_CHAR);
179 }
180
181 for (i = 1; i < 8; ++i)
182 {
183 do_test (align1: 0, align2: 0, len: 8 << i, SMALL_CHAR);
184 do_test (align1: 8 - i, align2: 2 * i, len: 8 << i, SMALL_CHAR);
185 }
186
187 for (i = 1; i < 8; ++i)
188 {
189 do_test (align1: i, align2: 2 * i, len: 8 << i, SMALL_CHAR);
190 do_test (align1: 2 * i, align2: i, len: 8 << i, BIG_CHAR);
191 do_test (align1: i, align2: i, len: 8 << i, SMALL_CHAR);
192 do_test (align1: i, align2: i, len: 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>
202

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