[thirdparty/glibc.git] / string / test-strncpy.c

/* Test strncpy functions.
   Copyright (C) 1999-2019 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Written by Jakub Jelinek <jakub@redhat.com>, 1999.

   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
   <http://www.gnu.org/licenses/>.  */

#ifdef WIDE
# include <wchar.h>
# define CHAR wchar_t
# define UCHAR wchar_t
# define BIG_CHAR WCHAR_MAX
# define SMALL_CHAR 1273
# define MEMCMP wmemcmp
# define MEMSET wmemset
# define STRNLEN wcsnlen
#else
# define CHAR char
# define UCHAR unsigned char
# define BIG_CHAR CHAR_MAX
# define SMALL_CHAR 127
# define MEMCMP memcmp
# define MEMSET memset
# define STRNLEN strnlen
#endif /* !WIDE */


#ifndef STRNCPY_RESULT
# define STRNCPY_RESULT(dst, len, n) dst
# define TEST_MAIN
# ifndef WIDE
#  define TEST_NAME "strncpy"
# else
#  define TEST_NAME "wcsncpy"
# endif /* WIDE */
# include "test-string.h"
# ifndef WIDE
#  define SIMPLE_STRNCPY simple_strncpy
#  define STUPID_STRNCPY stupid_strncpy
#  define STRNCPY strncpy
# else
#  define SIMPLE_STRNCPY simple_wcsncpy
#  define STUPID_STRNCPY stupid_wcsncpy
#  define STRNCPY wcsncpy
# endif /* WIDE */

CHAR *SIMPLE_STRNCPY (CHAR *, const CHAR *, size_t);
CHAR *STUPID_STRNCPY (CHAR *, const CHAR *, size_t);

IMPL (STUPID_STRNCPY, 0)
IMPL (SIMPLE_STRNCPY, 0)
IMPL (STRNCPY, 1)

CHAR *
SIMPLE_STRNCPY (CHAR *dst, const CHAR *src, size_t n)
{
  CHAR *ret = dst;
  while (n--)
    if ((*dst++ = *src++) == '\0')
      {
	while (n--)
	  *dst++ = '\0';
	return ret;
      }
  return ret;
}

CHAR *
STUPID_STRNCPY (CHAR *dst, const CHAR *src, size_t n)
{
  size_t nc = STRNLEN (src, n);
  size_t i;

  for (i = 0; i < nc; ++i)
    dst[i] = src[i];
  for (; i < n; ++i)
    dst[i] = '\0';
  return dst;
}
#endif /* !STRNCPY_RESULT */

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

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

  if (memcmp (dst, src, (len > n ? n : len) * sizeof (CHAR)) != 0)
    {
      error (0, 0, "Wrong result in function %s", impl->name);
      ret = 1;
      return;
    }

  if (n > len)
    {
      size_t i;

      for (i = len; i < n; ++i)
	if (dst [i] != '\0')
	  {
	    error (0, 0, "Wrong result in function %s", impl->name);
	    ret = 1;
	    return;
	  }
    }
}

static void
do_test (size_t align1, size_t align2, size_t len, size_t n, int max_char)
{
  size_t i;
  CHAR *s1, *s2;

/* For wcsncpy: align1 and align2 here mean alignment not in bytes,
   but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t)).  */
  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 (i = len + 1; (i + align1) * sizeof (CHAR) < page_size && i < len + 64;
       ++i)
    s1[i] = 32 + 32 * i % (max_char - 32);

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

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

  for (n = 0; n < ITERATIONS; n++)
    {
      /* For wcsncpy: align1 and align2 here mean align not in bytes,
	 but in wchar_ts, in bytes it will equal to align * (sizeof
	 (wchar_t)).  */

      mode = random ();
      if (mode & 1)
	{
	  size = random () & 255;
	  align1 = 512 - size - (random () & 15);
	  if (mode & 2)
	    align2 = align1 - (random () & 24);
	  else
	    align2 = align1 - (random () & 31);
	  if (mode & 4)
	    {
	      j = align1;
	      align1 = align2;
	      align2 = j;
	    }
	  if (mode & 8)
	    len = size - (random () & 31);
	  else
	    len = 512;
	  if (len >= 512)
	    len = random () & 511;
	}
      else
	{
	  align1 = random () & 31;
	  if (mode & 2)
	    align2 = random () & 31;
	  else
	    align2 = align1 + (random () & 24);
	  len = random () & 511;
	  j = align1;
	  if (align2 > j)
	    j = align2;
	  if (mode & 4)
	    {
	      size = random () & 511;
	      if (size + j > 512)
		size = 512 - j - (random () & 31);
	    }
	  else
	    size = 512 - j;
	  if ((mode & 8) && len + j >= 512)
	    len = 512 - 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), size);
	  if (res != STRNCPY_RESULT (p2 + align2, len, size))
	    {
	      error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd) %p != %p",
		     n, impl->name, align1, align2, len, res,
		     STRNCPY_RESULT (p2 + align2, len, size));
	      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;
		}
	    }
	  j = align2 + len + 1;
	  if (size + align2 > j)
	    j = size + align2;
	  for (; 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;
		}
	    }
	  for (j = align2 + len + 1; j < align2 + size; ++j)
	    if (p2[j])
	      {
		error (0, 0, "Iteration %zd - garbage after size, %s (%zd, %zd, %zd)",
		       n, impl->name, align1, align2, len);
		ret = 1;
		break;
	      }
	  j = len + 1;
	  if (size < j)
	    j = size;
	  if (MEMCMP (p1 + align1, p2 + align2, j))
	    {
	      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 ("%28s", "");
  FOR_EACH_IMPL (impl, 0)
    printf ("\t%s", impl->name);
  putchar ('\n');

  for (i = 1; i < 8; ++i)
    {
      do_test (i, i, 16, 16, SMALL_CHAR);
      do_test (i, i, 16, 16, BIG_CHAR);
      do_test (i, 2 * i, 16, 16, SMALL_CHAR);
      do_test (2 * i, i, 16, 16, BIG_CHAR);
      do_test (8 - i, 2 * i, 1 << i, 2 << i, SMALL_CHAR);
      do_test (2 * i, 8 - i, 2 << i, 1 << i, SMALL_CHAR);
      do_test (8 - i, 2 * i, 1 << i, 2 << i, BIG_CHAR);
      do_test (2 * i, 8 - i, 2 << i, 1 << i, BIG_CHAR);
    }

  for (i = 1; i < 8; ++i)
    {
      do_test (0, 0, 4 << i, 8 << i, SMALL_CHAR);
      do_test (0, 0, 16 << i, 8 << i, SMALL_CHAR);
      do_test (8 - i, 2 * i, 4 << i, 8 << i, SMALL_CHAR);
      do_test (8 - i, 2 * i, 16 << i, 8 << i, SMALL_CHAR);
    }

  do_random_tests ();
  return ret;
}

#include <support/test-driver.c>
Commit	Line	Data
d183b96e	1	/* Test strncpy functions.
04277e02	2	Copyright (C) 1999-2019 Free Software Foundation, Inc.
58ef9ef7 RM	3	This file is part of the GNU C Library.
	4	Written by Jakub Jelinek <jakub@redhat.com>, 1999.
	5
	6	The GNU C Library is free software; you can redistribute it and/or
	7	modify it under the terms of the GNU Lesser General Public
	8	License as published by the Free Software Foundation; either
	9	version 2.1 of the License, or (at your option) any later version.
	10
	11	The GNU C Library is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	Lesser General Public License for more details.
	15
	16	You should have received a copy of the GNU Lesser General Public
59ba27a6 PE	17	License along with the GNU C Library; if not, see
59ba27a6 PE	18	<http://www.gnu.org/licenses/>. */
58ef9ef7	19
d183b96e SL	20	#ifdef WIDE
	21	# include <wchar.h>
	22	# define CHAR wchar_t
	23	# define UCHAR wchar_t
	24	# define BIG_CHAR WCHAR_MAX
	25	# define SMALL_CHAR 1273
	26	# define MEMCMP wmemcmp
	27	# define MEMSET wmemset
	28	# define STRNLEN wcsnlen
	29	#else
	30	# define CHAR char
	31	# define UCHAR unsigned char
	32	# define BIG_CHAR CHAR_MAX
	33	# define SMALL_CHAR 127
	34	# define MEMCMP memcmp
	35	# define MEMSET memset
	36	# define STRNLEN strnlen
	37	#endif /* !WIDE */
	38
	39
58ef9ef7 RM	40	#ifndef STRNCPY_RESULT
	41	# define STRNCPY_RESULT(dst, len, n) dst
	42	# define TEST_MAIN
d183b96e SL	43	# ifndef WIDE
	44	# define TEST_NAME "strncpy"
	45	# else
	46	# define TEST_NAME "wcsncpy"
	47	# endif /* WIDE */
58ef9ef7	48	# include "test-string.h"
d183b96e SL	49	# ifndef WIDE
	50	# define SIMPLE_STRNCPY simple_strncpy
	51	# define STUPID_STRNCPY stupid_strncpy
	52	# define STRNCPY strncpy
	53	# else
	54	# define SIMPLE_STRNCPY simple_wcsncpy
	55	# define STUPID_STRNCPY stupid_wcsncpy
	56	# define STRNCPY wcsncpy
	57	# endif /* WIDE */
58ef9ef7	58
d183b96e SL	59	CHAR SIMPLE_STRNCPY (CHAR , const CHAR *, size_t);
d183b96e SL	60	CHAR STUPID_STRNCPY (CHAR , const CHAR *, size_t);
58ef9ef7	61
d183b96e SL	62	IMPL (STUPID_STRNCPY, 0)
	63	IMPL (SIMPLE_STRNCPY, 0)
	64	IMPL (STRNCPY, 1)
58ef9ef7	65
d183b96e SL	66	CHAR *
d183b96e SL	67	SIMPLE_STRNCPY (CHAR dst, const CHAR src, size_t n)
58ef9ef7	68	{
d183b96e	69	CHAR *ret = dst;
58ef9ef7 RM	70	while (n--)
	71	if ((dst++ = src++) == '\0')
	72	{
	73	while (n--)
	74	*dst++ = '\0';
	75	return ret;
	76	}
	77	return ret;
	78	}
e8c1660f	79
d183b96e SL	80	CHAR *
d183b96e SL	81	STUPID_STRNCPY (CHAR dst, const CHAR src, size_t n)
e8c1660f	82	{
d183b96e	83	size_t nc = STRNLEN (src, n);
9372c958	84	size_t i;
e8c1660f RM	85
	86	for (i = 0; i < nc; ++i)
	87	dst[i] = src[i];
	88	for (; i < n; ++i)
	89	dst[i] = '\0';
	90	return dst;
	91	}
d183b96e	92	#endif /* !STRNCPY_RESULT */
58ef9ef7	93
d183b96e	94	typedef CHAR (proto_t) (CHAR , const CHAR , size_t);
58ef9ef7 RM	95
58ef9ef7 RM	96	static void
d183b96e	97	do_one_test (impl_t impl, CHAR dst, const CHAR *src, size_t len, size_t n)
58ef9ef7 RM	98	{
	99	if (CALL (impl, dst, src, n) != STRNCPY_RESULT (dst, len, n))
	100	{
	101	error (0, 0, "Wrong result in function %s %p %p", impl->name,
	102	CALL (impl, dst, src, n), dst);
	103	ret = 1;
	104	return;
	105	}
	106
d183b96e	107	if (memcmp (dst, src, (len > n ? n : len) * sizeof (CHAR)) != 0)
58ef9ef7 RM	108	{
	109	error (0, 0, "Wrong result in function %s", impl->name);
	110	ret = 1;
	111	return;
	112	}
	113
	114	if (n > len)
	115	{
	116	size_t i;
	117
	118	for (i = len; i < n; ++i)
	119	if (dst [i] != '\0')
	120	{
	121	error (0, 0, "Wrong result in function %s", impl->name);
	122	ret = 1;
	123	return;
	124	}
	125	}
58ef9ef7 RM	126	}
	127
	128	static void
	129	do_test (size_t align1, size_t align2, size_t len, size_t n, int max_char)
	130	{
	131	size_t i;
d183b96e	132	CHAR s1, s2;
58ef9ef7	133
d183b96e SL	134	/* For wcsncpy: align1 and align2 here mean alignment not in bytes,
d183b96e SL	135	but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t)). */
58ef9ef7	136	align1 &= 7;
d183b96e	137	if ((align1 + len) * sizeof (CHAR) >= page_size)
58ef9ef7 RM	138	return;
	139
	140	align2 &= 7;
d183b96e	141	if ((align2 + len) * sizeof (CHAR) >= page_size)
58ef9ef7 RM	142	return;
58ef9ef7 RM	143
d183b96e SL	144	s1 = (CHAR *) (buf1) + align1;
d183b96e SL	145	s2 = (CHAR *) (buf2) + align2;
58ef9ef7 RM	146
	147	for (i = 0; i < len; ++i)
	148	s1[i] = 32 + 23 * i % (max_char - 32);
	149	s1[len] = 0;
d183b96e SL	150	for (i = len + 1; (i + align1) * sizeof (CHAR) < page_size && i < len + 64;
d183b96e SL	151	++i)
58ef9ef7 RM	152	s1[i] = 32 + 32 * i % (max_char - 32);
58ef9ef7 RM	153
58ef9ef7 RM	154	FOR_EACH_IMPL (impl, 0)
58ef9ef7 RM	155	do_one_test (impl, s2, s1, len, n);
58ef9ef7 RM	156	}
	157
	158	static void
	159	do_random_tests (void)
	160	{
739ca690	161	size_t i, j, n, align1, align2, len, size, mode;
d183b96e SL	162	UCHAR p1 = (UCHAR ) (buf1 + page_size) - 512;
	163	UCHAR p2 = (UCHAR ) (buf2 + page_size) - 512;
	164	UCHAR *res;
58ef9ef7 RM	165
	166	for (n = 0; n < ITERATIONS; n++)
	167	{
d183b96e SL	168	/* For wcsncpy: align1 and align2 here mean align not in bytes,
	169	but in wchar_ts, in bytes it will equal to align * (sizeof
	170	(wchar_t)). */
	171
739ca690 UD	172	mode = random ();
739ca690 UD	173	if (mode & 1)
58ef9ef7	174	{
739ca690 UD	175	size = random () & 255;
	176	align1 = 512 - size - (random () & 15);
	177	if (mode & 2)
	178	align2 = align1 - (random () & 24);
	179	else
	180	align2 = align1 - (random () & 31);
	181	if (mode & 4)
	182	{
	183	j = align1;
	184	align1 = align2;
	185	align2 = j;
	186	}
	187	if (mode & 8)
	188	len = size - (random () & 31);
	189	else
	190	len = 512;
	191	if (len >= 512)
	192	len = random () & 511;
58ef9ef7 RM	193	}
58ef9ef7 RM	194	else
739ca690 UD	195	{
	196	align1 = random () & 31;
	197	if (mode & 2)
	198	align2 = random () & 31;
	199	else
	200	align2 = align1 + (random () & 24);
	201	len = random () & 511;
	202	j = align1;
	203	if (align2 > j)
	204	j = align2;
	205	if (mode & 4)
	206	{
	207	size = random () & 511;
	208	if (size + j > 512)
d183b96e	209	size = 512 - j - (random () & 31);
739ca690 UD	210	}
	211	else
	212	size = 512 - j;
	213	if ((mode & 8) && len + j >= 512)
	214	len = 512 - j - (random () & 7);
	215	}
58ef9ef7 RM	216	j = len + align1 + 64;
	217	if (j > 512)
	218	j = 512;
	219	for (i = 0; i < j; i++)
	220	{
	221	if (i == len + align1)
	222	p1[i] = 0;
	223	else
	224	{
d183b96e	225	p1[i] = random () & BIG_CHAR;
58ef9ef7	226	if (i >= align1 && i < len + align1 && !p1[i])
d183b96e	227	p1[i] = (random () & SMALL_CHAR) + 3;
58ef9ef7 RM	228	}
	229	}
	230
	231	FOR_EACH_IMPL (impl, 1)
	232	{
d183b96e SL	233	MEMSET (p2 - 64, '\1', 512 + 64);
	234	res = (UCHAR ) CALL (impl, (CHAR ) (p2 + align2),
	235	(CHAR *) (p1 + align1), size);
58ef9ef7 RM	236	if (res != STRNCPY_RESULT (p2 + align2, len, size))
	237	{
	238	error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd) %p != %p",
	239	n, impl->name, align1, align2, len, res,
	240	STRNCPY_RESULT (p2 + align2, len, size));
	241	ret = 1;
	242	}
	243	for (j = 0; j < align2 + 64; ++j)
	244	{
	245	if (p2[j - 64] != '\1')
	246	{
	247	error (0, 0, "Iteration %zd - garbage before, %s (%zd, %zd, %zd)",
	248	n, impl->name, align1, align2, len);
	249	ret = 1;
	250	break;
	251	}
	252	}
	253	j = align2 + len + 1;
	254	if (size + align2 > j)
	255	j = size + align2;
	256	for (; j < 512; ++j)
	257	{
	258	if (p2[j] != '\1')
	259	{
	260	error (0, 0, "Iteration %zd - garbage after, %s (%zd, %zd, %zd)",
	261	n, impl->name, align1, align2, len);
	262	ret = 1;
	263	break;
	264	}
	265	}
	266	for (j = align2 + len + 1; j < align2 + size; ++j)
	267	if (p2[j])
	268	{
	269	error (0, 0, "Iteration %zd - garbage after size, %s (%zd, %zd, %zd)",
	270	n, impl->name, align1, align2, len);
	271	ret = 1;
	272	break;
	273	}
	274	j = len + 1;
	275	if (size < j)
	276	j = size;
d183b96e	277	if (MEMCMP (p1 + align1, p2 + align2, j))
58ef9ef7 RM	278	{
	279	error (0, 0, "Iteration %zd - different strings, %s (%zd, %zd, %zd)",
	280	n, impl->name, align1, align2, len);
	281	ret = 1;
	282	}
	283	}
	284	}
	285	}
	286
	287	int
	288	test_main (void)
	289	{
	290	size_t i;
	291
	292	test_init ();
	293
	294	printf ("%28s", "");
	295	FOR_EACH_IMPL (impl, 0)
	296	printf ("\t%s", impl->name);
	297	putchar ('\n');
	298
	299	for (i = 1; i < 8; ++i)
	300	{
d183b96e SL	301	do_test (i, i, 16, 16, SMALL_CHAR);
	302	do_test (i, i, 16, 16, BIG_CHAR);
	303	do_test (i, 2 * i, 16, 16, SMALL_CHAR);
	304	do_test (2 * i, i, 16, 16, BIG_CHAR);
	305	do_test (8 - i, 2 * i, 1 << i, 2 << i, SMALL_CHAR);
	306	do_test (2 * i, 8 - i, 2 << i, 1 << i, SMALL_CHAR);
	307	do_test (8 - i, 2 * i, 1 << i, 2 << i, BIG_CHAR);
	308	do_test (2 * i, 8 - i, 2 << i, 1 << i, BIG_CHAR);
58ef9ef7 RM	309	}
	310
	311	for (i = 1; i < 8; ++i)
	312	{
d183b96e SL	313	do_test (0, 0, 4 << i, 8 << i, SMALL_CHAR);
	314	do_test (0, 0, 16 << i, 8 << i, SMALL_CHAR);
	315	do_test (8 - i, 2 * i, 4 << i, 8 << i, SMALL_CHAR);
	316	do_test (8 - i, 2 * i, 16 << i, 8 << i, SMALL_CHAR);
58ef9ef7 RM	317	}
	318
	319	do_random_tests ();
	320	return ret;
	321	}
	322
fb82116f	323	#include <support/test-driver.c>