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/* Test and measure STRCHR functions.
Copyright (C) 1999-2014 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Written by Jakub Jelinek <jakub@redhat.com>, 1999.
Added wcschr 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
#ifndef WIDE
# ifdef USE_FOR_STRCHRNUL
# define TEST_NAME "strchrnul"
# else
# define TEST_NAME "strchr"
# endif
#else
# define TEST_NAME "wcschr"
#endif
#include "test-string.h"
#ifndef WIDE
# ifdef USE_FOR_STRCHRNUL
# define STRCHR strchrnul
# define stupid_STRCHR stupid_STRCHRNUL
# define simple_STRCHR simple_STRCHRNUL
# else
# define STRCHR strchr
# endif
# define STRLEN strlen
# define CHAR char
# define BIG_CHAR CHAR_MAX
# define MIDDLE_CHAR 127
# define SMALL_CHAR 23
# define UCHAR unsigned char
# define L(s) s
#else
# include <wchar.h>
# define STRCHR wcschr
# define STRLEN wcslen
# define CHAR wchar_t
# define BIG_CHAR WCHAR_MAX
# define MIDDLE_CHAR 1121
# define SMALL_CHAR 851
# define UCHAR wchar_t
# define L(s) L ## s
#endif
#ifdef USE_FOR_STRCHRNUL
# define NULLRET(endptr) endptr
#else
# define NULLRET(endptr) NULL
#endif
typedef CHAR *(*proto_t) (const CHAR *, int);
CHAR *
simple_STRCHR (const CHAR *s, int c)
{
for (; *s != (CHAR) c; ++s)
if (*s == '\0')
return NULLRET ((CHAR *) s);
return (CHAR *) s;
}
CHAR *
stupid_STRCHR (const CHAR *s, int c)
{
size_t n = STRLEN (s) + 1;
while (n--)
if (*s++ == (CHAR) c)
return (CHAR *) s - 1;
return NULLRET ((CHAR *) s - 1);
}
IMPL (stupid_STRCHR, 0)
IMPL (simple_STRCHR, 0)
IMPL (STRCHR, 1)
static int
check_result (impl_t *impl, const CHAR *s, int c, const CHAR *exp_res)
{
CHAR *res = CALL (impl, s, c);
if (res != exp_res)
{
error (0, 0, "Wrong result in function %s %#x %p %p", impl->name,
c, res, exp_res);
ret = 1;
return -1;
}
return 0;
}
static void
do_one_test (impl_t *impl, const CHAR *s, int c, const CHAR *exp_res)
{
if (check_result (impl, s, c, exp_res) < 0)
return;
}
static void
do_test (size_t align, size_t pos, size_t len, int seek_char, int max_char)
/* For wcschr: align here means align 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. */
{
size_t i;
CHAR *result;
CHAR *buf = (CHAR *) buf1;
align &= 15;
if ((align + len) * sizeof (CHAR) >= page_size)
return;
for (i = 0; i < len; ++i)
{
buf[align + i] = 32 + 23 * i % max_char;
if (buf[align + i] == seek_char)
buf[align + i] = seek_char + 1;
else if (buf[align + i] == 0)
buf[align + i] = 1;
}
buf[align + len] = 0;
if (pos < len)
{
buf[align + pos] = seek_char;
result = buf + align + pos;
}
else if (seek_char == 0)
result = buf + align + len;
else
result = NULLRET (buf + align + len);
FOR_EACH_IMPL (impl, 0)
do_one_test (impl, buf + align, seek_char, result);
}
static void
do_random_tests (void)
{
size_t i, j, n, align, pos, len;
int seek_char;
CHAR *result;
UCHAR *p = (UCHAR *) (buf1 + page_size - 512 * sizeof (CHAR));
for (n = 0; n < ITERATIONS; n++)
{
/* For wcschr: align here means align not in bytes, but in wchar_ts,
in bytes it will equal to align * (sizeof (wchar_t)). */
align = random () & 15;
pos = random () & 511;
seek_char = random () & 255;
if (pos + align >= 511)
pos = 510 - align - (random () & 7);
/* len for wcschr here isn't in bytes but it's number of wchar_t
symbols. */
len = random () & 511;
if ((pos == len && seek_char)
|| (pos > len && (random () & 1)))
len = pos + 1 + (random () & 7);
if (len + align >= 512)
len = 511 - align - (random () & 7);
if (pos == len && seek_char)
len = pos + 1;
j = (pos > len ? pos : len) + align + 64;
if (j > 512)
j = 512;
for (i = 0; i < j; i++)
{
if (i == pos + align)
p[i] = seek_char;
else if (i == len + align)
p[i] = 0;
else
{
p[i] = random () & 255;
if (i < pos + align && p[i] == seek_char)
p[i] = seek_char + 13;
if (i < len + align && !p[i])
{
p[i] = seek_char - 13;
if (!p[i])
p[i] = 140;
}
}
}
if (pos <= len)
result = (CHAR *) (p + pos + align);
else if (seek_char == 0)
result = (CHAR *) (p + len + align);
else
result = NULLRET ((CHAR *) (p + len + align));
FOR_EACH_IMPL (impl, 1)
if (CALL (impl, (CHAR *) (p + align), seek_char) != result)
{
error (0, 0, "Iteration %zd - wrong result in function \
%s (align in bytes: %zd, seek_char: %d, len: %zd, pos: %zd) %p != %p, p %p",
n, impl->name, align * sizeof (CHAR), seek_char, len, pos,
CALL (impl, (CHAR *) (p + align), seek_char), result, p);
ret = 1;
}
}
}
static void
check1 (void)
{
CHAR s[] __attribute__((aligned(16))) = L ("\xff");
CHAR c = L ('\xfe');
CHAR *exp_result = stupid_STRCHR (s, c);
FOR_EACH_IMPL (impl, 0)
check_result (impl, s, c, exp_result);
}
int
test_main (void)
{
size_t i;
test_init ();
check1 ();
printf ("%20s", "");
FOR_EACH_IMPL (impl, 0)
printf ("\t%s", impl->name);
putchar ('\n');
for (i = 1; i < 8; ++i)
{
do_test (0, 16 << i, 2048, SMALL_CHAR, MIDDLE_CHAR);
do_test (i, 16 << i, 2048, SMALL_CHAR, MIDDLE_CHAR);
}
for (i = 1; i < 8; ++i)
{
do_test (i, 64, 256, SMALL_CHAR, MIDDLE_CHAR);
do_test (i, 64, 256, SMALL_CHAR, BIG_CHAR);
}
for (i = 0; i < 32; ++i)
{
do_test (0, i, i + 1, SMALL_CHAR, MIDDLE_CHAR);
do_test (0, i, i + 1, SMALL_CHAR, BIG_CHAR);
}
for (i = 1; i < 8; ++i)
{
do_test (0, 16 << i, 2048, 0, MIDDLE_CHAR);
do_test (i, 16 << i, 2048, 0, MIDDLE_CHAR);
}
for (i = 1; i < 8; ++i)
{
do_test (i, 64, 256, 0, MIDDLE_CHAR);
do_test (i, 64, 256, 0, BIG_CHAR);
}
for (i = 0; i < 32; ++i)
{
do_test (0, i, i + 1, 0, MIDDLE_CHAR);
do_test (0, i, i + 1, 0, BIG_CHAR);
}
do_random_tests ();
return ret;
}
#include "../test-skeleton.c"
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