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/* Test and measure strdup functions.
Copyright (C) 2023-2025 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/>. */
#include <support/check.h>
#ifdef WIDE
# include <wchar.h>
# define CHAR wchar_t
# define sfmt "ls"
# define BIG_CHAR WCHAR_MAX
# define SMALL_CHAR 1273
# define STRCMP wcscmp
# define MEMCMP wmemcmp
# define MEMSET wmemset
# define TCS TEST_COMPARE_STRING_WIDE
#else
# define CHAR char
# define sfmt "s"
# define BIG_CHAR CHAR_MAX
# define SMALL_CHAR 127
# define STRCMP strcmp
# define MEMCMP memcmp
# define MEMSET memset
# define TCS TEST_COMPARE_STRING
#endif
#ifndef STRDUP_RESULT
# define STRDUP_RESULT(dst, len) dst
# define TEST_MAIN
# ifndef WIDE
# define TEST_NAME "strdup"
# else
# define TEST_NAME "wcsdup"
# endif
# include "test-string.h"
# ifndef WIDE
# define STRDUP strdup
# else
# define STRDUP wcsdup
# endif
#endif
typedef CHAR *(*proto_t) (const CHAR *);
static void
do_zero_len_test (void)
{
CHAR src[1] = { '\0' };
CHAR *dst = STRDUP (src);
TCS (dst, src);
free (dst);
}
static void
do_one_test (const CHAR *src,
size_t len __attribute__((unused)))
{
CHAR *dst = STRDUP (src);
if (STRCMP (dst, src) != 0)
{
error (0, 0,
"Wrong result in function %s dst \"%" sfmt "\" src \"%" sfmt "\"",
TEST_NAME, dst, src);
ret = 1;
free (dst);
return;
}
free (dst);
}
static void
do_test (size_t align1, size_t align2, size_t len, int max_char)
{
size_t i;
CHAR *s1;
/* For wcsdup: 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;
for (i = 0; i < len; i++)
s1[i] = 32 + 23 * i % (max_char - 32);
s1[len] = 0;
do_one_test (s1, len);
}
static void
do_random_tests (void)
{
size_t i, j, n, align1, align2, len;
CHAR *p1 = (CHAR *)(buf1 + page_size) - 512;
CHAR *res;
for (n = 0; n < ITERATIONS; n++)
{
/* align1 and align2 are expressed as wchar_t and not in bytes for wide
char test, and thus it will be equal to align times wchar_t size.
For non wide version 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;
}
}
res = STRDUP(p1 + align1);
TCS (res, (p1 + align1));
free (res);
}
}
int
test_main (void)
{
size_t i;
test_init ();
printf ("%23s", "");
printf ("\t%s", TEST_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_zero_len_test ();
do_random_tests ();
return ret;
}
#include <support/test-driver.c>
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