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

/* Test and measure strcmp and wcscmp functions.
   Copyright (C) 1999-2018 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Written by Jakub Jelinek <jakub@redhat.com>, 1999.
   Added wcscmp support by Liubov Dmitrieva <liubov.dmitrieva@gmail.com>, 2011.

   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/>.  */

#define TEST_MAIN
#ifdef WIDE
# define TEST_NAME "wcscmp"
#else
# define TEST_NAME "strcmp"
#endif
#include "test-string.h"

#ifdef WIDE
# include <wchar.h>

# define L(str) L##str
# define STRCMP wcscmp
# define STRCPY wcscpy
# define STRLEN wcslen
# define MEMCPY wmemcpy
# define SIMPLE_STRCMP simple_wcscmp
# define STUPID_STRCMP stupid_wcscmp
# define CHAR wchar_t
# define UCHAR wchar_t
# define CHARBYTES 4
# define CHARBYTESLOG 2
# define CHARALIGN __alignof__ (CHAR)
# define MIDCHAR 0x7fffffff
# define LARGECHAR 0xfffffffe
# define CHAR__MAX WCHAR_MAX
# define CHAR__MIN WCHAR_MIN

/* Wcscmp uses signed semantics for comparison, not unsigned */
/* Avoid using substraction since possible overflow */

int
simple_wcscmp (const wchar_t *s1, const wchar_t *s2)
{
  wchar_t c1, c2;
  do
    {
      c1 = *s1++;
      c2 = *s2++;
      if (c2 == L'\0')
      return c1 - c2;
    }
  while (c1 == c2);

  return c1 < c2 ? -1 : 1;
}

int
stupid_wcscmp (const wchar_t *s1, const wchar_t *s2)
{
  size_t ns1 = wcslen (s1) + 1;
  size_t ns2 = wcslen (s2) + 1;
  size_t n = ns1 < ns2 ? ns1 : ns2;
  int ret = 0;

  wchar_t c1, c2;

  while (n--) {
    c1 = *s1++;
    c2 = *s2++;
    if ((ret = c1 < c2 ? -1 : c1 == c2 ? 0 : 1) != 0)
      break;
  }
  return ret;
}

#else
# include <limits.h>

# define L(str) str
# define STRCMP strcmp
# define STRCPY strcpy
# define STRLEN strlen
# define MEMCPY memcpy
# define SIMPLE_STRCMP simple_strcmp
# define STUPID_STRCMP stupid_strcmp
# define CHAR char
# define UCHAR unsigned char
# define CHARBYTES 1
# define CHARBYTESLOG 0
# define CHARALIGN 1
# define MIDCHAR 0x7f
# define LARGECHAR 0xfe
# define CHAR__MAX CHAR_MAX
# define CHAR__MIN CHAR_MIN

/* Strcmp uses unsigned semantics for comparison. */
int
simple_strcmp (const char *s1, const char *s2)
{
  int ret;

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

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

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

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

IMPL (STUPID_STRCMP, 1)
IMPL (SIMPLE_STRCMP, 1)
IMPL (STRCMP, 1)

static int
check_result (impl_t *impl,
	     const CHAR *s1, const CHAR *s2,
	     int exp_result)
{
  int result = CALL (impl, s1, s2);
  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,
	     int exp_result)
{
  if (check_result (impl, s1, s2, exp_result) < 0)
    return;
}

static void
do_test (size_t align1, size_t align2, size_t len, int max_char,
	 int exp_result)
{
  size_t i;

  CHAR *s1, *s2;

  if (len == 0)
    return;

  align1 &= 63;
  if (align1 + (len + 1) * CHARBYTES >= page_size)
    return;

  align2 &= 63;
  if (align2 + (len + 1) * CHARBYTES >= page_size)
    return;

  /* Put them close to the end of page.  */
  i = align1 + CHARBYTES * (len + 2);
  s1 = (CHAR *) (buf1 + ((page_size - i) / 16 * 16) + align1);
  i = align2 + CHARBYTES * (len + 2);
  s2 = (CHAR *) (buf2 + ((page_size - i) / 16 * 16)  + align2);

  for (i = 0; i < len; i++)
    s1[i] = s2[i] = 1 + (23 << ((CHARBYTES - 1) * 8)) * i % max_char;

  s1[len] = s2[len] = 0;
  s1[len + 1] = 23;
  s2[len + 1] = 24 + exp_result;
  s2[len - 1] -= exp_result;

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

static void
do_random_tests (void)
{
	UCHAR *p1 = (UCHAR *) (buf1 + page_size - 512 * CHARBYTES);
	UCHAR *p2 = (UCHAR *) (buf2 + page_size - 512 * CHARBYTES);

	for (size_t n = 0; n < ITERATIONS; n++)
	  {
	    /* for wcscmp case align1 and align2 mean here alignment
	       in wchar_t symbols, it equal 4*k alignment in bytes, we
	       don't check other alignments like for example
	       p1 = (wchar_t *)(buf1 + 1)
	       because it's wrong using of wchar_t type.  */
	    size_t align1 = random () & 31;
	    size_t align2;
	    if (random () & 1)
	      align2 = random () & 31;
	    else
	      align2 = align1 + (random () & 24);
	    size_t pos = random () & 511;
	    size_t j = align1 > align2 ? align1 : align2;
	    if (pos + j >= 511)
	      pos = 510 - j - (random () & 7);
	    size_t len1 = random () & 511;
	    if (pos >= len1 && (random () & 1))
	      len1 = pos + (random () & 7);
	    if (len1 + j >= 512)
	      len1 = 511 - j - (random () & 7);
	    size_t len2;
	    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 (size_t i = 0; i < j; ++i)
	      {
		p1[i] = random () & 255;
		if (i < len1 + align1 && !p1[i])
		  {
		    p1[i] = random () & 255;
		    if (!p1[i])
		      p1[i] = 1 + (random () & 127);
		  }
	      }
	    for (size_t i = 0; i < j; ++i)
	      {
		p2[i] = random () & 255;
		if (i < len2 + align2 && !p2[i])
		  {
		    p2[i] = random () & 255;
		    if (!p2[i])
		      p2[i] = 1 + (random () & 127);
		  }
	      }

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

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

	    FOR_EACH_IMPL (impl, 1)
	      {
		int r = CALL (impl, (CHAR *) (p1 + align1), (CHAR *) (p2 + align2));
		/* 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 (align in bytes: %zd, align in bytes: %zd, len1:  %zd, len2: %zd, pos: %zd) %d != %d, p1 %p p2 %p",
			   n, impl->name, (size_t) (p1 + align1) & 63, (size_t) (p1 + align2) & 63, len1, len2, pos, r, result, p1, p2);
		    ret = 1;
		  }
	      }
     }
}

static void
check (void)
{
  CHAR *s1 = (CHAR *) (buf1 + 0xb2c);
  CHAR *s2 = (CHAR *) (buf1 + 0xfd8);

  STRCPY(s1, L("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrs"));
  STRCPY(s2, L("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijkLMNOPQRSTUV"));

  /* Check correct working for negatives values */

  s1[0] = 1;
  s2[0] = 1;
  s1[1] = 1;
  s2[1] = 1;
  s1[2] = -1;
  s2[2] = 3;
  s1[3] = 0;
  s2[3] = -1;

  /* Check possible overflow bug, actual more for wcscmp */

  s1[7] = CHAR__MIN;
  s2[7] = CHAR__MAX;

  size_t l1 = STRLEN (s1);
  size_t l2 = STRLEN (s2);

  for (size_t i1 = 0; i1 < l1; i1++)
    for (size_t i2 = 0; i2 < l2; i2++)
      {
		int exp_result = SIMPLE_STRCMP (s1 + i1, s2 + i2);
		FOR_EACH_IMPL (impl, 0)
		check_result (impl, s1 + i1, s2 + i2, exp_result);
      }

  /* Test cases where there are multiple zero bytes after the first.  */

  for (size_t i = 0; i < 16 + 1; i++)
    {
      s1[i] = 0x00;
      s2[i] = 0x00;
    }

  for (size_t i = 0; i < 16; i++)
    {
      int exp_result;

      for (int val = 0x01; val < 0x100; val++)
	{
	  for (size_t j = 0; j < i; j++)
	    {
	      s1[j] = val;
	      s2[j] = val;
	    }

	  s2[i] = val;

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


int
test_main (void)
{
  size_t i;

  test_init ();
  check();

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

  for (i = 1; i < 32; ++i)
    {
      do_test (CHARBYTES * i, CHARBYTES * i, i, MIDCHAR, 0);
      do_test (CHARBYTES * i, CHARBYTES * i, i, MIDCHAR, 1);
      do_test (CHARBYTES * i, CHARBYTES * i, i, MIDCHAR, -1);
    }

  for (i = 1; i < 10 + CHARBYTESLOG; ++i)
    {
      do_test (0, 0, 2 << i, MIDCHAR, 0);
      do_test (0, 0, 2 << i, LARGECHAR, 0);
      do_test (0, 0, 2 << i, MIDCHAR, 1);
      do_test (0, 0, 2 << i, LARGECHAR, 1);
      do_test (0, 0, 2 << i, MIDCHAR, -1);
      do_test (0, 0, 2 << i, LARGECHAR, -1);
      do_test (0, CHARBYTES * i, 2 << i, MIDCHAR, 1);
      do_test (CHARBYTES * i, CHARBYTES * (i + 1), 2 << i, LARGECHAR, 1);
    }

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

  do_random_tests ();
  return ret;
}

#include <support/test-driver.c>
Commit	Line	Data
95584d3b	1	/* Test and measure strcmp and wcscmp functions.
688903eb	2	Copyright (C) 1999-2018 Free Software Foundation, Inc.
58ef9ef7 RM	3	This file is part of the GNU C Library.
58ef9ef7 RM	4	Written by Jakub Jelinek <jakub@redhat.com>, 1999.
cff82933	5	Added wcscmp support by Liubov Dmitrieva <liubov.dmitrieva@gmail.com>, 2011.
58ef9ef7 RM	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
59ba27a6 PE	18	License along with the GNU C Library; if not, see
59ba27a6 PE	19	<http://www.gnu.org/licenses/>. */
58ef9ef7 RM	20
58ef9ef7 RM	21	#define TEST_MAIN
69f07e5f L	22	#ifdef WIDE
	23	# define TEST_NAME "wcscmp"
	24	#else
	25	# define TEST_NAME "strcmp"
	26	#endif
58ef9ef7 RM	27	#include "test-string.h"
58ef9ef7 RM	28
cff82933	29	#ifdef WIDE
cff82933	30	# include <wchar.h>
cff82933	31
cff82933 LD	32	# define L(str) L##str
	33	# define STRCMP wcscmp
	34	# define STRCPY wcscpy
	35	# define STRLEN wcslen
cb7e923b	36	# define MEMCPY wmemcpy
cff82933 LD	37	# define SIMPLE_STRCMP simple_wcscmp
cff82933 LD	38	# define STUPID_STRCMP stupid_wcscmp
cb7e923b	39	# define CHAR wchar_t
95584d3b	40	# define UCHAR wchar_t
cb7e923b UD	41	# define CHARBYTES 4
	42	# define CHARBYTESLOG 2
	43	# define CHARALIGN __alignof__ (CHAR)
	44	# define MIDCHAR 0x7fffffff
	45	# define LARGECHAR 0xfffffffe
95584d3b LD	46	# define CHAR__MAX WCHAR_MAX
	47	# define CHAR__MIN WCHAR_MIN
	48
	49	/* Wcscmp uses signed semantics for comparison, not unsigned */
	50	/* Avoid using substraction since possible overflow */
	51
	52	int
	53	simple_wcscmp (const wchar_t s1, const wchar_t s2)
	54	{
	55	wchar_t c1, c2;
	56	do
	57	{
	58	c1 = *s1++;
	59	c2 = *s2++;
	60	if (c2 == L'\0')
	61	return c1 - c2;
	62	}
	63	while (c1 == c2);
	64
	65	return c1 < c2 ? -1 : 1;
	66	}
	67
	68	int
	69	stupid_wcscmp (const wchar_t s1, const wchar_t s2)
	70	{
	71	size_t ns1 = wcslen (s1) + 1;
	72	size_t ns2 = wcslen (s2) + 1;
	73	size_t n = ns1 < ns2 ? ns1 : ns2;
	74	int ret = 0;
dc150e52	75
95584d3b LD	76	wchar_t c1, c2;
	77
	78	while (n--) {
	79	c1 = *s1++;
	80	c2 = *s2++;
	81	if ((ret = c1 < c2 ? -1 : c1 == c2 ? 0 : 1) != 0)
	82	break;
	83	}
	84	return ret;
	85	}
	86
cff82933	87	#else
302cadd3 TS	88	# include <limits.h>
302cadd3 TS	89
cff82933 LD	90	# define L(str) str
	91	# define STRCMP strcmp
	92	# define STRCPY strcpy
	93	# define STRLEN strlen
cb7e923b	94	# define MEMCPY memcpy
cff82933 LD	95	# define SIMPLE_STRCMP simple_strcmp
cff82933 LD	96	# define STUPID_STRCMP stupid_strcmp
cb7e923b UD	97	# define CHAR char
	98	# define UCHAR unsigned char
	99	# define CHARBYTES 1
	100	# define CHARBYTESLOG 0
	101	# define CHARALIGN 1
	102	# define MIDCHAR 0x7f
	103	# define LARGECHAR 0xfe
95584d3b LD	104	# define CHAR__MAX CHAR_MAX
95584d3b LD	105	# define CHAR__MIN CHAR_MIN
58ef9ef7	106
95584d3b	107	/* Strcmp uses unsigned semantics for comparison. */
58ef9ef7	108	int
95584d3b	109	simple_strcmp (const char s1, const char s2)
58ef9ef7 RM	110	{
	111	int ret;
	112
95584d3b	113	while ((ret = (unsigned char ) s1 - (unsigned char) s2++) == 0 && *s1++);
58ef9ef7 RM	114	return ret;
	115	}
	116
e8c1660f	117	int
95584d3b	118	stupid_strcmp (const char s1, const char s2)
e8c1660f	119	{
95584d3b LD	120	size_t ns1 = strlen (s1) + 1;
95584d3b LD	121	size_t ns2 = strlen (s2) + 1;
e8c1660f RM	122	size_t n = ns1 < ns2 ? ns1 : ns2;
	123	int ret = 0;
	124
	125	while (n--)
95584d3b	126	if ((ret = (unsigned char ) s1++ - (unsigned char ) s2++) != 0)
e8c1660f RM	127	break;
	128	return ret;
	129	}
95584d3b LD	130	#endif
	131
	132	typedef int (proto_t) (const CHAR , const CHAR *);
e8c1660f	133
cff82933 LD	134	IMPL (STUPID_STRCMP, 1)
	135	IMPL (SIMPLE_STRCMP, 1)
	136	IMPL (STRCMP, 1)
	137
	138	static int
	139	check_result (impl_t *impl,
cb7e923b	140	const CHAR s1, const CHAR s2,
cff82933	141	int exp_result)
58ef9ef7 RM	142	{
	143	int result = CALL (impl, s1, s2);
	144	if ((exp_result == 0 && result != 0)
	145	\|\| (exp_result < 0 && result >= 0)
	146	\|\| (exp_result > 0 && result <= 0))
	147	{
	148	error (0, 0, "Wrong result in function %s %d %d", impl->name,
	149	result, exp_result);
	150	ret = 1;
cff82933	151	return -1;
58ef9ef7 RM	152	}
58ef9ef7 RM	153
cff82933 LD	154	return 0;
	155	}
	156
	157	static void
	158	do_one_test (impl_t *impl,
cb7e923b	159	const CHAR s1, const CHAR s2,
cff82933 LD	160	int exp_result)
	161	{
	162	if (check_result (impl, s1, s2, exp_result) < 0)
	163	return;
58ef9ef7 RM	164	}
	165
	166	static void
	167	do_test (size_t align1, size_t align2, size_t len, int max_char,
	168	int exp_result)
	169	{
	170	size_t i;
cff82933	171
cb7e923b	172	CHAR s1, s2;
58ef9ef7 RM	173
	174	if (len == 0)
	175	return;
	176
cff82933	177	align1 &= 63;
cb7e923b	178	if (align1 + (len + 1) * CHARBYTES >= page_size)
cff82933 LD	179	return;
	180
	181	align2 &= 63;
cb7e923b	182	if (align2 + (len + 1) * CHARBYTES >= page_size)
cff82933 LD	183	return;
	184
	185	/* Put them close to the end of page. */
cb7e923b UD	186	i = align1 + CHARBYTES * (len + 2);
	187	s1 = (CHAR ) (buf1 + ((page_size - i) / 16 16) + align1);
	188	i = align2 + CHARBYTES * (len + 2);
	189	s2 = (CHAR ) (buf2 + ((page_size - i) / 16 16) + align2);
cff82933	190
58ef9ef7	191	for (i = 0; i < len; i++)
cb7e923b	192	s1[i] = s2[i] = 1 + (23 << ((CHARBYTES - 1) * 8)) * i % max_char;
58ef9ef7 RM	193
	194	s1[len] = s2[len] = 0;
	195	s1[len + 1] = 23;
	196	s2[len + 1] = 24 + exp_result;
	197	s2[len - 1] -= exp_result;
	198
58ef9ef7 RM	199	FOR_EACH_IMPL (impl, 0)
58ef9ef7 RM	200	do_one_test (impl, s1, s2, exp_result);
58ef9ef7 RM	201	}
	202
	203	static void
	204	do_random_tests (void)
	205	{
1d3e4b61 UD	206	UCHAR p1 = (UCHAR ) (buf1 + page_size - 512 * CHARBYTES);
1d3e4b61 UD	207	UCHAR p2 = (UCHAR ) (buf2 + page_size - 512 * CHARBYTES);
cb7e923b UD	208
	209	for (size_t n = 0; n < ITERATIONS; n++)
	210	{
91e4d56a UD	211	/* for wcscmp case align1 and align2 mean here alignment
	212	in wchar_t symbols, it equal 4*k alignment in bytes, we
	213	don't check other alignments like for example
	214	p1 = (wchar_t *)(buf1 + 1)
	215	because it's wrong using of wchar_t type. */
cb7e923b UD	216	size_t align1 = random () & 31;
	217	size_t align2;
	218	if (random () & 1)
	219	align2 = random () & 31;
	220	else
	221	align2 = align1 + (random () & 24);
	222	size_t pos = random () & 511;
	223	size_t j = align1 > align2 ? align1 : align2;
	224	if (pos + j >= 511)
	225	pos = 510 - j - (random () & 7);
	226	size_t len1 = random () & 511;
	227	if (pos >= len1 && (random () & 1))
	228	len1 = pos + (random () & 7);
	229	if (len1 + j >= 512)
	230	len1 = 511 - j - (random () & 7);
	231	size_t len2;
	232	if (pos >= len1)
	233	len2 = len1;
	234	else
	235	len2 = len1 + (len1 != 511 - j ? random () % (511 - j - len1) : 0);
	236	j = (pos > len2 ? pos : len2) + align1 + 64;
	237	if (j > 512)
	238	j = 512;
	239	for (size_t i = 0; i < j; ++i)
	240	{
	241	p1[i] = random () & 255;
	242	if (i < len1 + align1 && !p1[i])
	243	{
	244	p1[i] = random () & 255;
	245	if (!p1[i])
	246	p1[i] = 1 + (random () & 127);
	247	}
	248	}
	249	for (size_t i = 0; i < j; ++i)
	250	{
	251	p2[i] = random () & 255;
	252	if (i < len2 + align2 && !p2[i])
	253	{
	254	p2[i] = random () & 255;
	255	if (!p2[i])
	256	p2[i] = 1 + (random () & 127);
	257	}
	258	}
	259
	260	int result = 0;
1d3e4b61	261	MEMCPY (p2 + align2, p1 + align1, pos);
cb7e923b UD	262	if (pos < len1)
	263	{
	264	if (p2[align2 + pos] == p1[align1 + pos])
	265	{
	266	p2[align2 + pos] = random () & 255;
	267	if (p2[align2 + pos] == p1[align1 + pos])
	268	p2[align2 + pos] = p1[align1 + pos] + 3 + (random () & 127);
	269	}
	270
	271	if (p1[align1 + pos] < p2[align2 + pos])
	272	result = -1;
	273	else
	274	result = 1;
	275	}
	276	p1[len1 + align1] = 0;
	277	p2[len2 + align2] = 0;
	278
	279	FOR_EACH_IMPL (impl, 1)
	280	{
	281	int r = CALL (impl, (CHAR ) (p1 + align1), (CHAR ) (p2 + align2));
	282	/* Test whether on 64-bit architectures where ABI requires
	283	callee to promote has the promotion been done. */
	284	asm ("" : "=g" (r) : "0" (r));
	285	if ((r == 0 && result)
	286	\|\| (r < 0 && result >= 0)
	287	\|\| (r > 0 && result <= 0))
	288	{
1d3e4b61	289	error (0, 0, "Iteration %zd - wrong result in function %s (align in bytes: %zd, align in bytes: %zd, len1: %zd, len2: %zd, pos: %zd) %d != %d, p1 %p p2 %p",
cb7e923b UD	290	n, impl->name, (size_t) (p1 + align1) & 63, (size_t) (p1 + align2) & 63, len1, len2, pos, r, result, p1, p2);
	291	ret = 1;
	292	}
	293	}
1d3e4b61	294	}
58ef9ef7 RM	295	}
58ef9ef7 RM	296
cff82933 LD	297	static void
	298	check (void)
	299	{
cb7e923b UD	300	CHAR s1 = (CHAR ) (buf1 + 0xb2c);
cb7e923b UD	301	CHAR s2 = (CHAR ) (buf1 + 0xfd8);
cff82933	302
cb7e923b UD	303	STRCPY(s1, L("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrs"));
cb7e923b UD	304	STRCPY(s2, L("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijkLMNOPQRSTUV"));
cff82933	305
95584d3b LD	306	/* Check correct working for negatives values */
	307
	308	s1[0] = 1;
	309	s2[0] = 1;
	310	s1[1] = 1;
	311	s2[1] = 1;
	312	s1[2] = -1;
	313	s2[2] = 3;
	314	s1[3] = 0;
	315	s2[3] = -1;
	316
	317	/* Check possible overflow bug, actual more for wcscmp */
	318
	319	s1[7] = CHAR__MIN;
	320	s2[7] = CHAR__MAX;
	321
cb7e923b UD	322	size_t l1 = STRLEN (s1);
cb7e923b UD	323	size_t l2 = STRLEN (s2);
95584d3b	324
cb7e923b UD	325	for (size_t i1 = 0; i1 < l1; i1++)
cb7e923b UD	326	for (size_t i2 = 0; i2 < l2; i2++)
cff82933	327	{
dc150e52 UD	328	int exp_result = SIMPLE_STRCMP (s1 + i1, s2 + i2);
	329	FOR_EACH_IMPL (impl, 0)
	330	check_result (impl, s1 + i1, s2 + i2, exp_result);
cff82933	331	}
5331255b DM	332
	333	/* Test cases where there are multiple zero bytes after the first. */
	334
	335	for (size_t i = 0; i < 16 + 1; i++)
	336	{
	337	s1[i] = 0x00;
	338	s2[i] = 0x00;
	339	}
	340
	341	for (size_t i = 0; i < 16; i++)
	342	{
	343	int exp_result;
	344
	345	for (int val = 0x01; val < 0x100; val++)
	346	{
	347	for (size_t j = 0; j < i; j++)
	348	{
	349	s1[j] = val;
	350	s2[j] = val;
	351	}
	352
	353	s2[i] = val;
	354
	355	exp_result = SIMPLE_STRCMP (s1, s2);
	356	FOR_EACH_IMPL (impl, 0)
	357	check_result (impl, s1, s2, exp_result);
	358	}
	359	}
cff82933 LD	360	}
	361
	362
58ef9ef7 RM	363	int
	364	test_main (void)
	365	{
	366	size_t i;
	367
	368	test_init ();
cff82933	369	check();
58ef9ef7 RM	370
	371	printf ("%23s", "");
	372	FOR_EACH_IMPL (impl, 0)
	373	printf ("\t%s", impl->name);
	374	putchar ('\n');
	375
cff82933 LD	376	for (i = 1; i < 32; ++i)
cff82933 LD	377	{
cb7e923b UD	378	do_test (CHARBYTES * i, CHARBYTES * i, i, MIDCHAR, 0);
	379	do_test (CHARBYTES * i, CHARBYTES * i, i, MIDCHAR, 1);
	380	do_test (CHARBYTES * i, CHARBYTES * i, i, MIDCHAR, -1);
cff82933 LD	381	}
cff82933 LD	382
cb7e923b	383	for (i = 1; i < 10 + CHARBYTESLOG; ++i)
cff82933	384	{
cb7e923b UD	385	do_test (0, 0, 2 << i, MIDCHAR, 0);
	386	do_test (0, 0, 2 << i, LARGECHAR, 0);
	387	do_test (0, 0, 2 << i, MIDCHAR, 1);
	388	do_test (0, 0, 2 << i, LARGECHAR, 1);
	389	do_test (0, 0, 2 << i, MIDCHAR, -1);
	390	do_test (0, 0, 2 << i, LARGECHAR, -1);
	391	do_test (0, CHARBYTES * i, 2 << i, MIDCHAR, 1);
	392	do_test (CHARBYTES * i, CHARBYTES * (i + 1), 2 << i, LARGECHAR, 1);
cff82933 LD	393	}
cff82933 LD	394
cb7e923b	395	for (i = 1; i < 8; ++i)
cff82933	396	{
cb7e923b UD	397	do_test (CHARBYTES * i, 2 * CHARBYTES * i, 8 << i, MIDCHAR, 0);
	398	do_test (2 * CHARBYTES * i, CHARBYTES * i, 8 << i, LARGECHAR, 0);
	399	do_test (CHARBYTES * i, 2 * CHARBYTES * i, 8 << i, MIDCHAR, 1);
	400	do_test (2 * CHARBYTES * i, CHARBYTES * i, 8 << i, LARGECHAR, 1);
	401	do_test (CHARBYTES * i, 2 * CHARBYTES * i, 8 << i, MIDCHAR, -1);
	402	do_test (2 * CHARBYTES * i, CHARBYTES * i, 8 << i, LARGECHAR, -1);
cff82933	403	}
cff82933	404
58ef9ef7 RM	405	do_random_tests ();
	406	return ret;
	407	}
	408
fb82116f	409	#include <support/test-driver.c>