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

/* Test and measure strncasecmp 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
   <https://www.gnu.org/licenses/>.  */

#include <locale.h>
#include <ctype.h>
#define TEST_MAIN
#define TEST_NAME "strncasecmp"
#include "test-string.h"

typedef int (*proto_t) (const char *, const char *, size_t);
static int simple_strncasecmp (const char *, const char *, size_t);
static int stupid_strncasecmp (const char *, const char *, size_t);

IMPL (stupid_strncasecmp, 0)
IMPL (simple_strncasecmp, 0)
IMPL (strncasecmp, 1)

static int
simple_strncasecmp (const char *s1, const char *s2, size_t n)
{
  int ret;

  if (n == 0)
    return 0;

  while ((ret = ((unsigned char) tolower (*s1)
		 - (unsigned char) tolower (*s2))) == 0
	 && *s1++)
    {
      if (--n == 0)
	return 0;
      ++s2;
    }
  return ret;
}

static int
stupid_strncasecmp (const char *s1, const char *s2, size_t max)
{
  size_t ns1 = strlen (s1) + 1;
  size_t ns2 = strlen (s2) + 1;
  size_t n = ns1 < ns2 ? ns1 : ns2;
  if (n > max)
    n = max;
  int ret = 0;

  while (n--)
    {
      if ((ret = ((unsigned char) tolower (*s1)
		  - (unsigned char) tolower (*s2))) != 0)
	break;
      ++s1;
      ++s2;
    }
  return ret;
}

static int
check_result (impl_t *impl, const char *s1, const char *s2, size_t n,
	      int exp_result)
{
  int result = CALL (impl, s1, s2, n);
  if ((exp_result == 0 && result != 0)
      || (exp_result < 0 && result >= 0)
      || (exp_result > 0 && result <= 0))
    {
      error (0, 0, "Wrong result in function %s %d %d", impl->name,
	     result, exp_result);
      ret = 1;
      return -1;
    }

  return 0;
}

static void
do_one_test (impl_t *impl, const char *s1, const char *s2, size_t n,
	     int exp_result)
{
  if (check_result (impl, s1, s2, n, exp_result) < 0)
    return;
}

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

  if (len == 0)
    return;

  align1 &= 7;
  if (align1 + len + 1 >= page_size)
    return;

  align2 &= 7;
  if (align2 + len + 1 >= page_size)
    return;

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

  for (i = 0; i < len; i++)
    {
      s1[i] = toupper (1 + 23 * i % max_char);
      s2[i] = tolower (s1[i]);
    }

  s1[len] = s2[len] = 0;
  s1[len + 1] = 23;
  s2[len + 1] = 24 + exp_result;
  if ((s2[len - 1] == 'z' && exp_result == -1)
      || (s2[len - 1] == 'a' && exp_result == 1))
    s1[len - 1] += exp_result;
  else
    s2[len - 1] -= exp_result;

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

static void
do_random_tests (void)
{
  size_t i, j, n, align1, align2, pos, len1, len2;
  int result;
  long r;
  unsigned char *p1 = buf1 + page_size - 512;
  unsigned char *p2 = buf2 + page_size - 512;

  for (n = 0; n < ITERATIONS; n++)
    {
      align1 = random () & 31;
      if (random () & 1)
	align2 = random () & 31;
      else
	align2 = align1 + (random () & 24);
      pos = random () & 511;
      j = align1 > align2 ? align1 : align2;
      if (pos + j >= 511)
	pos = 510 - j - (random () & 7);
      len1 = random () & 511;
      if (pos >= len1 && (random () & 1))
	len1 = pos + (random () & 7);
      if (len1 + j >= 512)
	len1 = 511 - j - (random () & 7);
      if (pos >= len1)
	len2 = len1;
      else
	len2 = len1 + (len1 != 511 - j ? random () % (511 - j - len1) : 0);
      j = (pos > len2 ? pos : len2) + align1 + 64;
      if (j > 512)
	j = 512;
      for (i = 0; i < j; ++i)
	{
	  p1[i] = tolower (random () & 255);
	  if (i < len1 + align1 && !p1[i])
	    {
	      p1[i] = tolower (random () & 255);
	      if (!p1[i])
		p1[i] = tolower (1 + (random () & 127));
	    }
	}
      for (i = 0; i < j; ++i)
	{
	  p2[i] = toupper (random () & 255);
	  if (i < len2 + align2 && !p2[i])
	    {
	      p2[i] = toupper (random () & 255);
	      if (!p2[i])
		toupper (p2[i] = 1 + (random () & 127));
	    }
	}

      result = 0;
      memcpy (p2 + align2, p1 + align1, pos);
      if (pos < len1)
	{
	  if (tolower (p2[align2 + pos]) == p1[align1 + pos])
	    {
	      p2[align2 + pos] = toupper (random () & 255);
	      if (tolower (p2[align2 + pos]) == p1[align1 + pos])
		p2[align2 + pos] = toupper (p1[align1 + pos]
					    + 3 + (random () & 127));
	    }

	  if (p1[align1 + pos] < tolower (p2[align2 + pos]))
	    result = -1;
	  else
	    result = 1;
	}
      p1[len1 + align1] = 0;
      p2[len2 + align2] = 0;

      FOR_EACH_IMPL (impl, 1)
	{
	  r = CALL (impl, (char *) (p1 + align1), (char *) (p2 + align2),
		    pos + 1 + (random () & 255));
	  /* Test whether on 64-bit architectures where ABI requires
	     callee to promote has the promotion been done.  */
	  asm ("" : "=g" (r) : "0" (r));
	  if ((r == 0 && result)
	      || (r < 0 && result >= 0)
	      || (r > 0 && result <= 0))
	    {
	      error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd, %zd, %zd) %ld != %d, p1 %p p2 %p",
		     n, impl->name, align1, align2, len1, len2, pos, r, result, p1, p2);
	      ret = 1;
	    }
	}
    }
}

/* Regression test for BZ #12205 */
static void
bz12205 (void)
{
  static char cp [4096+16] __attribute__ ((aligned(4096)));
  static char gotrel[4096] __attribute__ ((aligned(4096)));
  char *s1 = cp + 0xffa;
  char *s2 = gotrel + 0xcbe;
  int exp_result;
  size_t n = 6;

  strcpy (s1, "gottpoff");
  strcpy (s2, "GOTPLT");

  exp_result = simple_strncasecmp (s1, s2, n);
  FOR_EACH_IMPL (impl, 0)
    check_result (impl, s1, s2, n, exp_result);
}

/* Regression test for BZ #14195 */
static void
bz14195 (void)
{
  const char *empty_string  = "";
  FOR_EACH_IMPL (impl, 0)
    check_result (impl, empty_string, "", 5, 0);
}

static void
test_locale (const char *locale)
{
  size_t i;

  if (setlocale (LC_CTYPE, locale) == NULL)
    {
      error (0, 0, "cannot set locale \"%s\"", locale);
      ret = 1;
    }

  bz12205 ();
  bz14195 ();

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

  for (i = 1; i < 16; ++i)
    {
      do_test (i, i, i - 1, i, 127, 0);

      do_test (i, i, i, i, 127, 0);
      do_test (i, i, i, i, 127, 1);
      do_test (i, i, i, i, 127, -1);

      do_test (i, i, i + 1, i, 127, 0);
      do_test (i, i, i + 1, i, 127, 1);
      do_test (i, i, i + 1, i, 127, -1);
    }

  for (i = 1; i < 10; ++i)
    {
      do_test (0, 0, (2 << i) - 1, 2 << i, 127, 0);
      do_test (0, 0, 2 << i, 2 << i, 254, 0);
      do_test (0, 0, (2 << i) + 1, 2 << i, 127, 0);

      do_test (0, 0, (2 << i) + 1, 2 << i, 254, 0);

      do_test (0, 0, 2 << i, 2 << i, 127, 1);
      do_test (0, 0, (2 << i) + 10, 2 << i, 127, 1);

      do_test (0, 0, 2 << i, 2 << i, 254, 1);
      do_test (0, 0, (2 << i) + 10, 2 << i, 254, 1);

      do_test (0, 0, 2 << i, 2 << i, 127, -1);
      do_test (0, 0, (2 << i) + 10, 2 << i, 127, -1);

      do_test (0, 0, 2 << i, 2 << i, 254, -1);
      do_test (0, 0, (2 << i) + 10, 2 << i, 254, -1);
    }

  for (i = 1; i < 8; ++i)
    {
      do_test (i, 2 * i, (8 << i) - 1, 8 << i, 127, 0);
      do_test (i, 2 * i, 8 << i, 8 << i, 127, 0);
      do_test (i, 2 * i, (8 << i) + 100, 8 << i, 127, 0);

      do_test (2 * i, i, (8 << i) - 1, 8 << i, 254, 0);
      do_test (2 * i, i, 8 << i, 8 << i, 254, 0);
      do_test (2 * i, i, (8 << i) + 100, 8 << i, 254, 0);

      do_test (i, 2 * i, 8 << i, 8 << i, 127, 1);
      do_test (i, 2 * i, (8 << i) + 100, 8 << i, 127, 1);

      do_test (2 * i, i, 8 << i, 8 << i, 254, 1);
      do_test (2 * i, i, (8 << i) + 100, 8 << i, 254, 1);

      do_test (i, 2 * i, 8 << i, 8 << i, 127, -1);
      do_test (i, 2 * i, (8 << i) + 100, 8 << i, 127, -1);

      do_test (2 * i, i, 8 << i, 8 << i, 254, -1);
      do_test (2 * i, i, (8 << i) + 100, 8 << i, 254, -1);
    }

  do_random_tests ();
}

int
test_main (void)
{
  test_init ();

  test_locale ("C");
  test_locale ("en_US.ISO-8859-1");
  test_locale ("en_US.UTF-8");
  test_locale ("tr_TR.ISO-8859-9");
  test_locale ("tr_TR.UTF-8");

  return ret;
}

#include <support/test-driver.c>
Commit	Line	Data
e9f82e0d	1	/* Test and measure strncasecmp functions.
04277e02	2	Copyright (C) 1999-2019 Free Software Foundation, Inc.
e9f82e0d UD	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	17	License along with the GNU C Library; if not, see
5a82c748	18	<https://www.gnu.org/licenses/>. */
e9f82e0d	19
45b8accc	20	#include <locale.h>
e9f82e0d UD	21	#include <ctype.h>
e9f82e0d UD	22	#define TEST_MAIN
69f07e5f	23	#define TEST_NAME "strncasecmp"
e9f82e0d UD	24	#include "test-string.h"
	25
	26	typedef int (proto_t) (const char , const char *, size_t);
	27	static int simple_strncasecmp (const char , const char , size_t);
	28	static int stupid_strncasecmp (const char , const char , size_t);
	29
	30	IMPL (stupid_strncasecmp, 0)
	31	IMPL (simple_strncasecmp, 0)
	32	IMPL (strncasecmp, 1)
	33
	34	static int
	35	simple_strncasecmp (const char s1, const char s2, size_t n)
	36	{
	37	int ret;
	38
	39	if (n == 0)
	40	return 0;
	41
	42	while ((ret = ((unsigned char) tolower (*s1)
	43	- (unsigned char) tolower (*s2))) == 0
	44	&& *s1++)
	45	{
	46	if (--n == 0)
	47	return 0;
	48	++s2;
	49	}
	50	return ret;
	51	}
	52
	53	static int
	54	stupid_strncasecmp (const char s1, const char s2, size_t max)
	55	{
	56	size_t ns1 = strlen (s1) + 1;
	57	size_t ns2 = strlen (s2) + 1;
	58	size_t n = ns1 < ns2 ? ns1 : ns2;
	59	if (n > max)
	60	n = max;
	61	int ret = 0;
	62
	63	while (n--)
	64	{
	65	if ((ret = ((unsigned char) tolower (*s1)
	66	- (unsigned char) tolower (*s2))) != 0)
	67	break;
	68	++s1;
	69	++s2;
	70	}
	71	return ret;
	72	}
	73
8ca52c6e L	74	static int
	75	check_result (impl_t impl, const char s1, const char *s2, size_t n,
	76	int exp_result)
e9f82e0d UD	77	{
	78	int result = CALL (impl, s1, s2, n);
	79	if ((exp_result == 0 && result != 0)
	80	\|\| (exp_result < 0 && result >= 0)
	81	\|\| (exp_result > 0 && result <= 0))
	82	{
	83	error (0, 0, "Wrong result in function %s %d %d", impl->name,
	84	result, exp_result);
	85	ret = 1;
8ca52c6e	86	return -1;
e9f82e0d UD	87	}
e9f82e0d UD	88
8ca52c6e L	89	return 0;
	90	}
	91
	92	static void
	93	do_one_test (impl_t impl, const char s1, const char *s2, size_t n,
	94	int exp_result)
	95	{
	96	if (check_result (impl, s1, s2, n, exp_result) < 0)
	97	return;
e9f82e0d UD	98	}
	99
	100	static void
	101	do_test (size_t align1, size_t align2, size_t n, size_t len, int max_char,
	102	int exp_result)
	103	{
	104	size_t i;
	105	char s1, s2;
	106
	107	if (len == 0)
	108	return;
	109
	110	align1 &= 7;
	111	if (align1 + len + 1 >= page_size)
	112	return;
	113
	114	align2 &= 7;
	115	if (align2 + len + 1 >= page_size)
	116	return;
	117
	118	s1 = (char *) (buf1 + align1);
	119	s2 = (char *) (buf2 + align2);
	120
	121	for (i = 0; i < len; i++)
	122	{
	123	s1[i] = toupper (1 + 23 * i % max_char);
	124	s2[i] = tolower (s1[i]);
	125	}
	126
	127	s1[len] = s2[len] = 0;
	128	s1[len + 1] = 23;
	129	s2[len + 1] = 24 + exp_result;
	130	if ((s2[len - 1] == 'z' && exp_result == -1)
	131	\|\| (s2[len - 1] == 'a' && exp_result == 1))
	132	s1[len - 1] += exp_result;
	133	else
	134	s2[len - 1] -= exp_result;
	135
e9f82e0d UD	136	FOR_EACH_IMPL (impl, 0)
e9f82e0d UD	137	do_one_test (impl, s1, s2, n, exp_result);
e9f82e0d UD	138	}
	139
	140	static void
	141	do_random_tests (void)
	142	{
	143	size_t i, j, n, align1, align2, pos, len1, len2;
	144	int result;
	145	long r;
	146	unsigned char *p1 = buf1 + page_size - 512;
	147	unsigned char *p2 = buf2 + page_size - 512;
	148
	149	for (n = 0; n < ITERATIONS; n++)
	150	{
	151	align1 = random () & 31;
	152	if (random () & 1)
	153	align2 = random () & 31;
	154	else
	155	align2 = align1 + (random () & 24);
	156	pos = random () & 511;
	157	j = align1 > align2 ? align1 : align2;
	158	if (pos + j >= 511)
	159	pos = 510 - j - (random () & 7);
	160	len1 = random () & 511;
	161	if (pos >= len1 && (random () & 1))
	162	len1 = pos + (random () & 7);
	163	if (len1 + j >= 512)
	164	len1 = 511 - j - (random () & 7);
	165	if (pos >= len1)
	166	len2 = len1;
	167	else
	168	len2 = len1 + (len1 != 511 - j ? random () % (511 - j - len1) : 0);
	169	j = (pos > len2 ? pos : len2) + align1 + 64;
	170	if (j > 512)
	171	j = 512;
	172	for (i = 0; i < j; ++i)
	173	{
	174	p1[i] = tolower (random () & 255);
	175	if (i < len1 + align1 && !p1[i])
	176	{
	177	p1[i] = tolower (random () & 255);
	178	if (!p1[i])
	179	p1[i] = tolower (1 + (random () & 127));
	180	}
	181	}
	182	for (i = 0; i < j; ++i)
	183	{
	184	p2[i] = toupper (random () & 255);
	185	if (i < len2 + align2 && !p2[i])
	186	{
	187	p2[i] = toupper (random () & 255);
	188	if (!p2[i])
	189	toupper (p2[i] = 1 + (random () & 127));
	190	}
	191	}
	192
	193	result = 0;
	194	memcpy (p2 + align2, p1 + align1, pos);
	195	if (pos < len1)
	196	{
	197	if (tolower (p2[align2 + pos]) == p1[align1 + pos])
	198	{
	199	p2[align2 + pos] = toupper (random () & 255);
	200	if (tolower (p2[align2 + pos]) == p1[align1 + pos])
	201	p2[align2 + pos] = toupper (p1[align1 + pos]
202	+ 3 + (random () & 127));
203	}
204
205	if (p1[align1 + pos] < tolower (p2[align2 + pos]))
206	result = -1;
207	else
208	result = 1;
209	}
210	p1[len1 + align1] = 0;
211	p2[len2 + align2] = 0;
212
213	FOR_EACH_IMPL (impl, 1)
214	{
215	r = CALL (impl, (char ) (p1 + align1), (char ) (p2 + align2),
216	pos + 1 + (random () & 255));
217	/* Test whether on 64-bit architectures where ABI requires
218	callee to promote has the promotion been done. */
219	asm ("" : "=g" (r) : "0" (r));
220	if ((r == 0 && result)
221	\|\| (r < 0 && result >= 0)
222	\|\| (r > 0 && result <= 0))
223	{
224	error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd, %zd, %zd) %ld != %d, p1 %p p2 %p",
225	n, impl->name, align1, align2, len1, len2, pos, r, result, p1, p2);
226	ret = 1;
227	}
228	}
229	}
230	}
231
b3f479a8	232	/* Regression test for BZ #12205 */
8ca52c6e	233	static void
b3f479a8	234	bz12205 (void)
8ca52c6e L	235	{
	236	static char cp [4096+16] __attribute__ ((aligned(4096)));
	237	static char gotrel[4096] __attribute__ ((aligned(4096)));
	238	char *s1 = cp + 0xffa;
	239	char *s2 = gotrel + 0xcbe;
	240	int exp_result;
	241	size_t n = 6;
	242
	243	strcpy (s1, "gottpoff");
	244	strcpy (s2, "GOTPLT");
	245
	246	exp_result = simple_strncasecmp (s1, s2, n);
	247	FOR_EACH_IMPL (impl, 0)
	248	check_result (impl, s1, s2, n, exp_result);
	249	}
	250
b3f479a8 LD	251	/* Regression test for BZ #14195 */
	252	static void
	253	bz14195 (void)
	254	{
	255	const char *empty_string = "";
	256	FOR_EACH_IMPL (impl, 0)
	257	check_result (impl, empty_string, "", 5, 0);
	258	}
	259
45b8accc AS	260	static void
45b8accc AS	261	test_locale (const char *locale)
e9f82e0d UD	262	{
	263	size_t i;
	264
45b8accc AS	265	if (setlocale (LC_CTYPE, locale) == NULL)
	266	{
	267	error (0, 0, "cannot set locale \"%s\"", locale);
	268	ret = 1;
	269	}
e9f82e0d	270
b3f479a8 LD	271	bz12205 ();
b3f479a8 LD	272	bz14195 ();
8ca52c6e	273
45b8accc	274	printf ("%23s", locale);
e9f82e0d UD	275	FOR_EACH_IMPL (impl, 0)
	276	printf ("\t%s", impl->name);
	277	putchar ('\n');
	278
	279	for (i = 1; i < 16; ++i)
	280	{
	281	do_test (i, i, i - 1, i, 127, 0);
	282
	283	do_test (i, i, i, i, 127, 0);
	284	do_test (i, i, i, i, 127, 1);
	285	do_test (i, i, i, i, 127, -1);
	286
	287	do_test (i, i, i + 1, i, 127, 0);
	288	do_test (i, i, i + 1, i, 127, 1);
	289	do_test (i, i, i + 1, i, 127, -1);
	290	}
	291
	292	for (i = 1; i < 10; ++i)
	293	{
	294	do_test (0, 0, (2 << i) - 1, 2 << i, 127, 0);
	295	do_test (0, 0, 2 << i, 2 << i, 254, 0);
	296	do_test (0, 0, (2 << i) + 1, 2 << i, 127, 0);
	297
	298	do_test (0, 0, (2 << i) + 1, 2 << i, 254, 0);
	299
	300	do_test (0, 0, 2 << i, 2 << i, 127, 1);
	301	do_test (0, 0, (2 << i) + 10, 2 << i, 127, 1);
	302
	303	do_test (0, 0, 2 << i, 2 << i, 254, 1);
	304	do_test (0, 0, (2 << i) + 10, 2 << i, 254, 1);
	305
	306	do_test (0, 0, 2 << i, 2 << i, 127, -1);
	307	do_test (0, 0, (2 << i) + 10, 2 << i, 127, -1);
	308
	309	do_test (0, 0, 2 << i, 2 << i, 254, -1);
	310	do_test (0, 0, (2 << i) + 10, 2 << i, 254, -1);
	311	}
	312
	313	for (i = 1; i < 8; ++i)
	314	{
	315	do_test (i, 2 * i, (8 << i) - 1, 8 << i, 127, 0);
	316	do_test (i, 2 * i, 8 << i, 8 << i, 127, 0);
	317	do_test (i, 2 * i, (8 << i) + 100, 8 << i, 127, 0);
	318
	319	do_test (2 * i, i, (8 << i) - 1, 8 << i, 254, 0);
	320	do_test (2 * i, i, 8 << i, 8 << i, 254, 0);
	321	do_test (2 * i, i, (8 << i) + 100, 8 << i, 254, 0);
	322
	323	do_test (i, 2 * i, 8 << i, 8 << i, 127, 1);
	324	do_test (i, 2 * i, (8 << i) + 100, 8 << i, 127, 1);
	325
	326	do_test (2 * i, i, 8 << i, 8 << i, 254, 1);
	327	do_test (2 * i, i, (8 << i) + 100, 8 << i, 254, 1);
	328
	329	do_test (i, 2 * i, 8 << i, 8 << i, 127, -1);
	330	do_test (i, 2 * i, (8 << i) + 100, 8 << i, 127, -1);
	331
	332	do_test (2 * i, i, 8 << i, 8 << i, 254, -1);
	333	do_test (2 * i, i, (8 << i) + 100, 8 << i, 254, -1);
	334	}
	335
	336	do_random_tests ();
45b8accc AS	337	}
	338
	339	int
	340	test_main (void)
	341	{
	342	test_init ();
	343
	344	test_locale ("C");
	345	test_locale ("en_US.ISO-8859-1");
	346	test_locale ("en_US.UTF-8");
	347	test_locale ("tr_TR.ISO-8859-9");
	348	test_locale ("tr_TR.UTF-8");
	349
e9f82e0d UD	350	return ret;
	351	}
	352
fb82116f	353	#include <support/test-driver.c>