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glibc/string/stratcliff.c
H.J. Lu 376b40a27a string/stratcliff.c: Replace int with size_t [BZ #21982] 
Fix GCC 7 errors when string/stratcliff.c is compiled with -O3:

stratcliff.c: In function ‘do_test’:
cc1: error: assuming signed overflow does not occur when assuming that (X - c) <= X is always true [-Werror=strict-overflow]

	[BZ #21982]
	* string/stratcliff.c (do_test): Declare size, nchars, inner,
	middle and outer with size_t instead of int.  Repleace %d and
	%Zd with %zu in printf.  Update "MAX (0, nchars - 128)" and
	"MAX (outer, nchars - 64)" to support unsigned outer and
	nchars.  Also exit loop when outer == 0.
2017-08-23 08:23:02 -07:00

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/* Test for string function add boundaries of usable memory.
Copyright (C) 1996-2017 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
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 _GNU_SOURCE 1
/* Make sure we don't test the optimized inline functions if we want to
test the real implementation. */
#undef __USE_STRING_INLINES
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/param.h>
#ifndef CHAR
# define L(c) c
# define CHAR char
# define MEMSET memset
# define STRLEN strlen
# define STRNLEN strnlen
# define STRCHR strchr
# define STRRCHR strrchr
# define STRCPY strcpy
# define STRNCPY strncpy
# define MEMCMP memcmp
# define STPCPY stpcpy
# define STPNCPY stpncpy
# define MEMCPY memcpy
# define MEMPCPY mempcpy
# define MEMCHR memchr
# define STRCMP strcmp
# define STRNCMP strncmp
#endif
#define STRINGIFY(s) STRINGIFY2 (s)
#define STRINGIFY2(s) #s
int
do_test (void)
{
size_t size = sysconf (_SC_PAGESIZE);
size_t nchars = size / sizeof (CHAR);
CHAR *adr;
CHAR *dest;
int result = 0;
adr = (CHAR *) mmap (NULL, 3 * size, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANON, -1, 0);
dest = (CHAR *) mmap (NULL, 3 * size, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANON, -1, 0);
if (adr == MAP_FAILED || dest == MAP_FAILED)
{
if (errno == ENOSYS)
puts ("No test, mmap not available.");
else
{
printf ("mmap failed: %m");
result = 1;
}
}
else
{
size_t inner, middle, outer, nchars64, max128;
if (nchars > 64)
nchars64 = nchars - 64;
else
nchars64 = 0;
if (nchars > 128)
max128 = nchars - 128;
else
max128 = 0;
mprotect (adr, size, PROT_NONE);
mprotect (adr + 2 * nchars, size, PROT_NONE);
adr += nchars;
mprotect (dest, size, PROT_NONE);
mprotect (dest + 2 * nchars, size, PROT_NONE);
dest += nchars;
MEMSET (adr, L('T'), nchars);
/* strlen/wcslen test */
for (outer = nchars - 1; outer >= max128; --outer)
{
for (inner = MAX (outer, nchars64); inner < nchars; ++inner)
{
adr[inner] = L('\0');
if (STRLEN (&adr[outer]) != (size_t) (inner - outer))
{
printf ("%s flunked for outer = %zu, inner = %zu\n",
STRINGIFY (STRLEN), outer, inner);
result = 1;
}
adr[inner] = L('T');
}
if (outer == 0)
break;
}
/* strnlen/wcsnlen test */
for (outer = nchars; outer >= max128; --outer)
{
for (inner = MAX (outer, nchars64); inner < nchars; ++inner)
{
adr[inner] = L('\0');
if (STRNLEN (&adr[outer], inner - outer + 1)
!= (size_t) (inner - outer))
{
printf ("%s flunked for outer = %zu, inner = %zu\n",
STRINGIFY (STRNLEN), outer, inner);
result = 1;
}
adr[inner] = L('T');
}
if (outer == 0)
break;
}
for (outer = nchars; outer >= max128; --outer)
{
for (inner = MAX (outer, nchars64); inner <= nchars; ++inner)
{
if (STRNLEN (&adr[outer], inner - outer)
!= (size_t) (inner - outer))
{
printf ("%s flunked bounded for outer = %zu, inner = %zu\n",
STRINGIFY (STRNLEN), outer, inner);
result = 1;
}
}
if (outer == 0)
break;
}
/* strchr/wcschr test */
for (outer = nchars - 1; outer >= max128; --outer)
{
for (middle = MAX (outer, nchars64); middle < nchars; ++middle)
{
for (inner = middle; inner < nchars; ++inner)
{
adr[middle] = L('V');
adr[inner] = L('\0');
CHAR *cp = STRCHR (&adr[outer], L('V'));
if ((inner == middle && cp != NULL)
|| (inner != middle
&& (cp - &adr[outer]) != middle - outer))
{
printf ("%s flunked for outer = %zu, middle = %zu, "
"inner = %zu\n",
STRINGIFY (STRCHR), outer, middle, inner);
result = 1;
}
adr[inner] = L('T');
adr[middle] = L('T');
}
}
if (outer == 0)
break;
}
/* Special test. */
adr[nchars - 1] = L('\0');
if (STRCHR (&adr[nchars - 1], L('\n')) != NULL)
{
printf ("%s flunked test of empty string at end of page\n",
STRINGIFY (STRCHR));
result = 1;
}
/* strrchr/wcsrchr test */
for (outer = nchars - 1; outer >= max128; --outer)
{
for (middle = MAX (outer, nchars64); middle < nchars; ++middle)
{
for (inner = middle; inner < nchars; ++inner)
{
adr[middle] = L('V');
adr[inner] = L('\0');
CHAR *cp = STRRCHR (&adr[outer], L('V'));
if ((inner == middle && cp != NULL)
|| (inner != middle
&& (cp - &adr[outer]) != middle - outer))
{
printf ("%s flunked for outer = %zu, middle = %zu, "
"inner = %zu\n",
STRINGIFY (STRRCHR), outer, middle, inner);
result = 1;
}
adr[inner] = L('T');
adr[middle] = L('T');
}
}
if (outer == 0)
break;
}
/* memchr test */
for (outer = nchars - 1; outer >= max128; --outer)
{
for (middle = MAX (outer, nchars64); middle < nchars; ++middle)
{
adr[middle] = L('V');
CHAR *cp = MEMCHR (&adr[outer], L('V'), 3 * size);
if (cp - &adr[outer] != middle - outer)
{
printf ("%s flunked for outer = %zu, middle = %zu\n",
STRINGIFY (MEMCHR), outer, middle);
result = 1;
}
adr[middle] = L('T');
}
if (outer == 0)
break;
}
for (outer = nchars; outer >= max128; --outer)
{
CHAR *cp = MEMCHR (&adr[outer], L('V'), nchars - outer);
if (cp != NULL)
{
printf ("%s flunked for outer = %zu\n",
STRINGIFY (MEMCHR), outer);
result = 1;
}
if (outer == 0)
break;
}
/* These functions only exist for single-byte characters. */
#ifndef WCSTEST
/* rawmemchr test */
for (outer = nchars - 1; outer >= max128; --outer)
{
for (middle = MAX (outer, nchars64); middle < nchars; ++middle)
{
adr[middle] = L('V');
CHAR *cp = rawmemchr (&adr[outer], L('V'));
if (cp - &adr[outer] != middle - outer)
{
printf ("%s flunked for outer = %zu, middle = %zu\n",
STRINGIFY (rawmemchr), outer, middle);
result = 1;
}
adr[middle] = L('T');
}
if (outer == 0)
break;
}
/* memrchr test */
for (outer = nchars - 1; outer >= max128; --outer)
{
for (middle = MAX (outer, nchars64); middle < nchars; ++middle)
{
adr[middle] = L('V');
CHAR *cp = memrchr (&adr[outer], L('V'), nchars - outer);
if (cp - &adr[outer] != middle - outer)
{
printf ("%s flunked for outer = %zu, middle = %zu\n",
STRINGIFY (memrchr), outer, middle);
result = 1;
}
adr[middle] = L('T');
}
if (outer == 0)
break;
}
for (outer = nchars; outer >= max128; --outer)
{
CHAR *cp = memrchr (&adr[outer], L('V'), nchars - outer);
if (cp != NULL)
{
printf ("%s flunked for outer = %zu\n",
STRINGIFY (memrchr), outer);
result = 1;
}
if (outer == 0)
break;
}
#endif
/* strcpy/wcscpy test */
for (outer = nchars - 1; outer >= max128; --outer)
{
for (inner = MAX (outer, nchars64); inner < nchars; ++inner)
{
adr[inner] = L('\0');
if (STRCPY (dest, &adr[outer]) != dest
|| STRLEN (dest) != (size_t) (inner - outer))
{
printf ("%s flunked for outer = %zu, inner = %zu\n",
STRINGIFY (STRCPY), outer, inner);
result = 1;
}
adr[inner] = L('T');
}
if (outer == 0)
break;
}
/* strcmp/wcscmp tests */
for (outer = 1; outer < 32; ++outer)
for (middle = 0; middle < 16; ++middle)
{
MEMSET (adr + middle, L('T'), 256);
adr[256] = L('\0');
MEMSET (dest + nchars - outer, L('T'), outer - 1);
dest[nchars - 1] = L('\0');
if (STRCMP (adr + middle, dest + nchars - outer) <= 0)
{
printf ("%s 1 flunked for outer = %zu, middle = %zu\n",
STRINGIFY (STRCMP), outer, middle);
result = 1;
}
if (STRCMP (dest + nchars - outer, adr + middle) >= 0)
{
printf ("%s 2 flunked for outer = %zu, middle = %zu\n",
STRINGIFY (STRCMP), outer, middle);
result = 1;
}
}
/* strncmp/wcsncmp tests */
for (outer = 1; outer < 32; ++outer)
for (middle = 0; middle < 16; ++middle)
{
MEMSET (adr + middle, L('T'), 256);
adr[256] = L('\0');
MEMSET (dest + nchars - outer, L('T'), outer - 1);
dest[nchars - 1] = L('U');
for (inner = 0; inner < outer; ++inner)
{
if (STRNCMP (adr + middle, dest + nchars - outer, inner) != 0)
{
printf ("%s 1 flunked for outer = %zu, middle = %zu, "
"inner = %zu\n",
STRINGIFY (STRNCMP), outer, middle, inner);
result = 1;
}
if (STRNCMP (dest + nchars - outer, adr + middle, inner) != 0)
{
printf ("%s 2 flunked for outer = %zu, middle = %zu, "
"inner = %zu\n",
STRINGIFY (STRNCMP), outer, middle, inner);
result = 1;
}
}
if (STRNCMP (adr + middle, dest + nchars - outer, outer) >= 0)
{
printf ("%s 1 flunked for outer = %zu, middle = %zu, full\n",
STRINGIFY (STRNCMP), outer, middle);
result = 1;
}
if (STRNCMP (dest + nchars - outer, adr + middle, outer) <= 0)
{
printf ("%s 2 flunked for outer = %zu, middle = %zu, full\n",
STRINGIFY (STRNCMP), outer, middle);
result = 1;
}
}
/* strncpy/wcsncpy tests */
adr[nchars - 1] = L('T');
for (outer = nchars; outer >= max128; --outer)
{
size_t len;
for (len = 0; len < nchars - outer; ++len)
{
if (STRNCPY (dest, &adr[outer], len) != dest
|| MEMCMP (dest, &adr[outer], len) != 0)
{
printf ("outer %s flunked for outer = %zu, len = %zu\n",
STRINGIFY (STRNCPY), outer, len);
result = 1;
}
}
if (outer == 0)
break;
}
adr[nchars - 1] = L('\0');
for (outer = nchars - 1; outer >= max128; --outer)
{
for (inner = MAX (outer, nchars64); inner < nchars; ++inner)
{
size_t len;
adr[inner] = L('\0');
for (len = 0; len < nchars - outer + 64; ++len)
{
if (STRNCPY (dest, &adr[outer], len) != dest
|| MEMCMP (dest, &adr[outer],
MIN (inner - outer, len)) != 0
|| (inner - outer < len
&& STRLEN (dest) != (inner - outer)))
{
printf ("%s flunked for outer = %zu, inner = %zu, "
"len = %zu\n",
STRINGIFY (STRNCPY), outer, inner, len);
result = 1;
}
if (STRNCPY (dest + 1, &adr[outer], len) != dest + 1
|| MEMCMP (dest + 1, &adr[outer],
MIN (inner - outer, len)) != 0
|| (inner - outer < len
&& STRLEN (dest + 1) != (inner - outer)))
{
printf ("%s+1 flunked for outer = %zu, inner = %zu, "
"len = %zu\n",
STRINGIFY (STRNCPY), outer, inner, len);
result = 1;
}
}
adr[inner] = L('T');
}
if (outer == 0)
break;
}
/* stpcpy/wcpcpy test */
for (outer = nchars - 1; outer >= max128; --outer)
{
for (inner = MAX (outer, nchars64); inner < nchars; ++inner)
{
adr[inner] = L('\0');
if ((STPCPY (dest, &adr[outer]) - dest) != inner - outer)
{
printf ("%s flunked for outer = %zu, inner = %zu\n",
STRINGIFY (STPCPY), outer, inner);
result = 1;
}
adr[inner] = L('T');
}
if (outer == 0)
break;
}
/* stpncpy/wcpncpy test */
adr[nchars - 1] = L('T');
for (outer = nchars; outer >= max128; --outer)
{
size_t len;
for (len = 0; len < nchars - outer; ++len)
{
if (STPNCPY (dest, &adr[outer], len) != dest + len
|| MEMCMP (dest, &adr[outer], len) != 0)
{
printf ("outer %s flunked for outer = %zu, len = %zu\n",
STRINGIFY (STPNCPY), outer, len);
result = 1;
}
}
if (outer == 0)
break;
}
adr[nchars - 1] = L('\0');
for (outer = nchars - 1; outer >= max128; --outer)
{
for (middle = MAX (outer, nchars64); middle < nchars; ++middle)
{
adr[middle] = L('\0');
for (inner = 0; inner < nchars - outer; ++ inner)
{
if ((STPNCPY (dest, &adr[outer], inner) - dest)
!= MIN (inner, middle - outer))
{
printf ("%s flunked for outer = %zu, middle = %zu, "
"inner = %zu\n",
STRINGIFY (STPNCPY), outer, middle, inner);
result = 1;
}
}
adr[middle] = L('T');
}
if (outer == 0)
break;
}
/* memcpy/wmemcpy test */
for (outer = nchars; outer >= max128; --outer)
{
for (inner = 0; inner < nchars - outer; ++inner)
if (MEMCPY (dest, &adr[outer], inner) != dest)
{
printf ("%s flunked for outer = %zu, inner = %zu\n",
STRINGIFY (MEMCPY), outer, inner);
result = 1;
}
if (outer == 0)
break;
}
/* mempcpy/wmempcpy test */
for (outer = nchars; outer >= max128; --outer)
{
for (inner = 0; inner < nchars - outer; ++inner)
if (MEMPCPY (dest, &adr[outer], inner) != dest + inner)
{
printf ("%s flunked for outer = %zu, inner = %zu\n",
STRINGIFY (MEMPCPY), outer, inner);
result = 1;
}
if (outer == 0)
break;
}
/* This function only exists for single-byte characters. */
#ifndef WCSTEST
/* memccpy test */
memset (adr, '\0', nchars);
for (outer = nchars; outer >= max128; --outer)
{
for (inner = 0; inner < nchars - outer; ++inner)
if (memccpy (dest, &adr[outer], L('\1'), inner) != NULL)
{
printf ("memccpy flunked full copy for outer = %zu, inner = %zu\n",
outer, inner);
result = 1;
}
if (outer == 0)
break;
}
for (outer = nchars - 1; outer >= max128; --outer)
{
for (middle = 0; middle < nchars - outer; ++middle)
{
memset (dest, L('\2'), middle + 1);
for (inner = 0; inner < middle; ++inner)
{
adr[outer + inner] = L('\1');
if (memccpy (dest, &adr[outer], '\1', middle + 128)
!= dest + inner + 1)
{
printf ("\
memccpy flunked partial copy for outer = %zu, middle = %zu, inner = %zu\n",
outer, middle, inner);
result = 1;
}
else if (dest[inner + 1] != L('\2'))
{
printf ("\
memccpy copied too much for outer = %zu, middle = %zu, inner = %zu\n",
outer, middle, inner);
result = 1;
}
adr[outer + inner] = L('\0');
}
}
if (outer == 0)
break;
}
#endif
}
return result;
}
#include <support/test-driver.c>
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