about summary refs log tree commit diff
path: root/string/test-strcpy.c
blob: 125d4c1bcc818708f6b1017bb2ff13143bca351b (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
/* Test and measure strcpy functions.
   Copyright (C) 1999-2024 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#ifdef WIDE
# include <wchar.h>
# define CHAR wchar_t
# define UCHAR wchar_t
# define sfmt "ls"
# define BIG_CHAR WCHAR_MAX
# define SMALL_CHAR 1273
# define STRCMP wcscmp
# define MEMCMP wmemcmp
# define MEMSET wmemset
#else
# define CHAR char
# define UCHAR unsigned char
# define sfmt "s"
# define BIG_CHAR CHAR_MAX
# define SMALL_CHAR 127
# define STRCMP strcmp
# define MEMCMP memcmp
# define MEMSET memset
#endif

#ifndef STRCPY_RESULT
# define STRCPY_RESULT(dst, len) dst
# define TEST_MAIN
# ifndef WIDE
#  define TEST_NAME "strcpy"
# else
#  define TEST_NAME "wcscpy"
# endif
# include "test-string.h"
# ifndef WIDE
#  define STRCPY strcpy
# else
#  define STRCPY wcscpy
# endif

IMPL (STRCPY, 1)

/* Also check the generic implementation.  */
#undef STRCPY
#undef libc_hidden_builtin_def
#define libc_hidden_builtin_def(a)
#undef libc_hidden_def
#define libc_hidden_def(a)
#undef weak_alias
#define weak_alias(a,b)
#undef attribute_hidden
#define attribute_hidden
# ifndef WIDE
#  define STPCPY __stpcpy_default
#  include "string/stpcpy.c"
#  define STRCPY __strcpy_default
#  define __stpcpy __stpcpy_default
#  include "string/strcpy.c"
IMPL (__strcpy_default, 1)
# else
#  define __wcslen wcslen
#  define __wmemcpy wmemcpy
#  define WCSCPY __wcscpy_default
#  include "wcsmbs/wcscpy.c"
IMPL (__wcscpy_default, 1)
# endif
#endif

typedef CHAR *(*proto_t) (CHAR *, const CHAR *);

static void
do_one_test (impl_t *impl, CHAR *dst, const CHAR *src,
	     size_t len __attribute__((unused)))
{
  if (CALL (impl, dst, src) != STRCPY_RESULT (dst, len))
    {
      error (0, 0, "Wrong result in function %s %p %p", impl->name,
	     CALL (impl, dst, src), STRCPY_RESULT (dst, len));
      ret = 1;
      return;
    }

  if (STRCMP (dst, src) != 0)
    {
      error (0, 0,
	     "Wrong result in function %s dst \"%" sfmt "\" src \"%" sfmt "\"",
	     impl->name, dst, src);
      ret = 1;
      return;
    }
}

static void
do_test (size_t align1, size_t align2, size_t len, int max_char)
{
  size_t i;
  CHAR *s1, *s2;
/* For wcscpy: align1 and align2 here mean alignment not in bytes,
   but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t))
   len for wcschr here isn't in bytes but it's number of wchar_t symbols.  */
  align1 &= 7;
  if ((align1 + len) * sizeof (CHAR) >= page_size)
    return;

  align2 &= 7;
  if ((align2 + len) * sizeof (CHAR) >= page_size)
    return;

  s1 = (CHAR *) (buf1) + align1;
  s2 = (CHAR *) (buf2) + align2;

  for (i = 0; i < len; i++)
    s1[i] = 32 + 23 * i % (max_char - 32);
  s1[len] = 0;

  FOR_EACH_IMPL (impl, 0)
    do_one_test (impl, s2, s1, len);
}

static void
do_random_tests (void)
{
  size_t i, j, n, align1, align2, len;
  UCHAR *p1 = (UCHAR *) (buf1 + page_size) - 512;
  UCHAR *p2 = (UCHAR *) (buf2 + page_size) - 512;
  UCHAR *res;

  for (n = 0; n < ITERATIONS; n++)
    {
      /* For wcsrchr: align1 and align2 here mean align not in bytes,
	 but in wchar_ts, in bytes it will equal to align * (sizeof
	 (wchar_t)).  For strrchr we need to check all alignments from
	 0 to 63 since some assembly implementations have separate
	 prolog for alignments more 48. */

      align1 = random () & (63 / sizeof (CHAR));
      if (random () & 1)
	align2 = random () & (63 / sizeof (CHAR));
      else
	align2 = align1 + (random () & 24);
      len = random () & 511;
      j = align1;
      if (align2 > j)
	j = align2;
      if (len + j >= 511)
	len = 510 - j - (random () & 7);
      j = len + align1 + 64;
      if (j > 512)
	j = 512;
      for (i = 0; i < j; i++)
	{
	  if (i == len + align1)
	    p1[i] = 0;
	  else
	    {
	      p1[i] = random () & BIG_CHAR;
	      if (i >= align1 && i < len + align1 && !p1[i])
		p1[i] = (random () & SMALL_CHAR) + 3;
	    }
	}

      FOR_EACH_IMPL (impl, 1)
	{
	  MEMSET (p2 - 64, '\1', 512 + 64);
	  res = (UCHAR *) CALL (impl, (CHAR *) (p2 + align2), (CHAR *) (p1 + align1));
	  if (res != STRCPY_RESULT (p2 + align2, len))
	    {
	      error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd) %p != %p",
		     n, impl->name, align1, align2, len, res,
		     STRCPY_RESULT (p2 + align2, len));
	      ret = 1;
	    }
	  for (j = 0; j < align2 + 64; ++j)
	    {
	      if (p2[j - 64] != '\1')
		{
		  error (0, 0, "Iteration %zd - garbage before, %s (%zd, %zd, %zd)",
			 n, impl->name, align1, align2, len);
		  ret = 1;
		  break;
		}
	    }
	  for (j = align2 + len + 1; j < 512; ++j)
	    {
	      if (p2[j] != '\1')
		{
		  error (0, 0, "Iteration %zd - garbage after, %s (%zd, %zd, %zd)",
			 n, impl->name, align1, align2, len);
		  ret = 1;
		  break;
		}
	    }
	  if (MEMCMP (p1 + align1, p2 + align2, len + 1))
	    {
	      error (0, 0, "Iteration %zd - different strings, %s (%zd, %zd, %zd)",
		     n, impl->name, align1, align2, len);
	      ret = 1;
	    }
	}
    }
}

int
test_main (void)
{
  size_t i;

  test_init ();

  printf ("%23s", "");
  FOR_EACH_IMPL (impl, 0)
    printf ("\t%s", impl->name);
  putchar ('\n');

  for (i = 0; i < 16; ++i)
    {
      do_test (0, 0, i, SMALL_CHAR);
      do_test (0, 0, i, BIG_CHAR);
      do_test (0, i, i, SMALL_CHAR);
      do_test (i, 0, i, BIG_CHAR);
    }

  for (i = 1; i < 8; ++i)
    {
      do_test (0, 0, 8 << i, SMALL_CHAR);
      do_test (8 - i, 2 * i, 8 << i, SMALL_CHAR);
    }

  for (i = 1; i < 8; ++i)
    {
      do_test (i, 2 * i, 8 << i, SMALL_CHAR);
      do_test (2 * i, i, 8 << i, BIG_CHAR);
      do_test (i, i, 8 << i, SMALL_CHAR);
      do_test (i, i, 8 << i, BIG_CHAR);
    }

  do_random_tests ();
  return ret;
}

#include <support/test-driver.c>