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1/* Test and measure STRLEN functions.
2 Copyright (C) 1999-2019 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Written by Jakub Jelinek <jakub@redhat.com>, 1999.
5 Added wcslen support by Liubov Dmitrieva <liubov.dmitrieva@gmail.com>, 2011
6
7 The GNU C Library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Lesser General Public
9 License as published by the Free Software Foundation; either
10 version 2.1 of the License, or (at your option) any later version.
11
12 The GNU C Library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
16
17 You should have received a copy of the GNU Lesser General Public
18 License along with the GNU C Library; if not, see
19 <http://www.gnu.org/licenses/>. */
20
21#define TEST_MAIN
22#ifndef WIDE
23# define TEST_NAME "strlen"
24#else
25# define TEST_NAME "wcslen"
26#endif
27#include "test-string.h"
28
29#ifndef WIDE
30# define STRLEN strlen
31# define CHAR char
32# define MAX_CHAR CHAR_MAX
33#else
34# include <wchar.h>
35# define STRLEN wcslen
36# define CHAR wchar_t
37# define MAX_CHAR WCHAR_MAX
38#endif
39
40typedef size_t (*proto_t) (const CHAR *);
41
42size_t
43simple_STRLEN (const CHAR *s)
44{
45 const CHAR *p;
46
47 for (p = s; *p; ++p);
48 return p - s;
49}
50
51#ifndef WIDE
52size_t
53builtin_strlen (const CHAR *p)
54{
55 return __builtin_strlen (p);
56}
57IMPL (builtin_strlen, 0)
58#endif
59
60IMPL (simple_STRLEN, 0)
61IMPL (STRLEN, 1)
62
63
64static void
65do_one_test (impl_t *impl, const CHAR *s, size_t exp_len)
66{
67 size_t len = CALL (impl, s);
68 if (len != exp_len)
69 {
70 error (0, 0, "Wrong result in function %s %zd %zd", impl->name,
71 len, exp_len);
72 ret = 1;
73 return;
74 }
75}
76
77static void
78do_test (size_t align, size_t len)
79{
80 size_t i;
81
82 align &= 63;
83 if (align + sizeof (CHAR) * len >= page_size)
84 return;
85
86 CHAR *buf = (CHAR *) (buf1);
87
88 for (i = 0; i < len; ++i)
89 buf[align + i] = 1 + 11111 * i % MAX_CHAR;
90 buf[align + len] = 0;
91
92 FOR_EACH_IMPL (impl, 0)
93 do_one_test (impl, (CHAR *) (buf + align), len);
94}
95
96static void
97do_random_tests (void)
98{
99 size_t i, j, n, align, len;
100 CHAR *p = (CHAR *) (buf1 + page_size - 512 * sizeof (CHAR));
101
102 for (n = 0; n < ITERATIONS; n++)
103 {
104 align = random () & 15;
105 len = random () & 511;
106 if (len + align > 510)
107 len = 511 - align - (random () & 7);
108 j = len + align + 64;
109 if (j > 512)
110 j = 512;
111
112 for (i = 0; i < j; i++)
113 {
114 if (i == len + align)
115 p[i] = 0;
116 else
117 {
118 p[i] = random () & 255;
119 if (i >= align && i < len + align && !p[i])
120 p[i] = (random () & 127) + 1;
121 }
122 }
123
124 FOR_EACH_IMPL (impl, 1)
125 if (CALL (impl, (CHAR *) (p + align)) != len)
126 {
127 error (0, 0, "Iteration %zd - wrong result in function %s (%zd) %zd != %zd, p %p",
128 n, impl->name, align, CALL (impl, (CHAR *) (p + align)),
129 len, p);
130 ret = 1;
131 }
132 }
133}
134
135int
136test_main (void)
137{
138 size_t i;
139
140 test_init ();
141
142 printf ("%20s", "");
143 FOR_EACH_IMPL (impl, 0)
144 printf ("\t%s", impl->name);
145 putchar ('\n');
146
147 /* Checking with only 4 * N alignments for wcslen, other alignments are wrong for wchar_t type arrays*/
148
149 for (i = 1; i < 8; ++i)
150 {
151 do_test (sizeof (CHAR) * i, i);
152 do_test (0, i);
153 }
154
155 for (i = 2; i <= 12; ++i)
156 {
157 do_test (0, 1 << i);
158 do_test (sizeof (CHAR) * 7, 1 << i);
159 do_test (sizeof (CHAR) * i, 1 << i);
160 do_test (sizeof (CHAR) * i, (size_t)((1 << i) / 1.5));
161 }
162
163 do_random_tests ();
164 return ret;
165}
166
167#include <support/test-driver.c>
168

Warning: That file was not part of the compilation database. It may have many parsing errors.