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/* Test and measure strcmp and wcscmp functions.
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Copyright (C) 1999-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Written by Jakub Jelinek <jakub@redhat.com>, 1999.
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Added wcscmp support by Liubov Dmitrieva <liubov.dmitrieva@gmail.com>, 2011.
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The GNU C Library is free software; you can redistribute it and/or
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6c4009 |
modify it under the terms of the GNU Lesser General Public
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6c4009 |
License as published by the Free Software Foundation; either
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6c4009 |
version 2.1 of the License, or (at your option) any later version.
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6c4009 |
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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6c4009 |
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You should have received a copy of the GNU Lesser General Public
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6c4009 |
License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#define TEST_MAIN
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#ifdef WIDE
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# define TEST_NAME "wcscmp"
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#else
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# define TEST_NAME "strcmp"
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#endif
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#include "test-string.h"
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#ifdef WIDE
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# include <wchar.h>
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# define L(str) L##str
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# define STRCMP wcscmp
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# define STRCPY wcscpy
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# define STRLEN wcslen
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# define MEMCPY wmemcpy
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# define SIMPLE_STRCMP simple_wcscmp
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# define STUPID_STRCMP stupid_wcscmp
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# define CHAR wchar_t
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# define UCHAR wchar_t
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# define CHARBYTES 4
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# define CHARBYTESLOG 2
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# define CHARALIGN __alignof__ (CHAR)
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# define MIDCHAR 0x7fffffff
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# define LARGECHAR 0xfffffffe
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# define CHAR__MAX WCHAR_MAX
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# define CHAR__MIN WCHAR_MIN
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/* Wcscmp uses signed semantics for comparison, not unsigned */
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/* Avoid using substraction since possible overflow */
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int
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simple_wcscmp (const wchar_t *s1, const wchar_t *s2)
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{
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wchar_t c1, c2;
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do
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{
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c1 = *s1++;
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c2 = *s2++;
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if (c2 == L'\0')
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return c1 - c2;
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}
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while (c1 == c2);
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return c1 < c2 ? -1 : 1;
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}
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int
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stupid_wcscmp (const wchar_t *s1, const wchar_t *s2)
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{
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size_t ns1 = wcslen (s1) + 1;
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size_t ns2 = wcslen (s2) + 1;
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size_t n = ns1 < ns2 ? ns1 : ns2;
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int ret = 0;
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wchar_t c1, c2;
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while (n--) {
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c1 = *s1++;
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c2 = *s2++;
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if ((ret = c1 < c2 ? -1 : c1 == c2 ? 0 : 1) != 0)
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break;
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}
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return ret;
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}
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#else
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# include <limits.h>
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# define L(str) str
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# define STRCMP strcmp
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# define STRCPY strcpy
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# define STRLEN strlen
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# define MEMCPY memcpy
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# define SIMPLE_STRCMP simple_strcmp
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# define STUPID_STRCMP stupid_strcmp
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# define CHAR char
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# define UCHAR unsigned char
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# define CHARBYTES 1
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# define CHARBYTESLOG 0
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# define CHARALIGN 1
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# define MIDCHAR 0x7f
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# define LARGECHAR 0xfe
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# define CHAR__MAX CHAR_MAX
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# define CHAR__MIN CHAR_MIN
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/* Strcmp uses unsigned semantics for comparison. */
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int
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simple_strcmp (const char *s1, const char *s2)
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{
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int ret;
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while ((ret = *(unsigned char *) s1 - *(unsigned char*) s2++) == 0 && *s1++);
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return ret;
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}
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int
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stupid_strcmp (const char *s1, const char *s2)
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{
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size_t ns1 = strlen (s1) + 1;
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size_t ns2 = strlen (s2) + 1;
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size_t n = ns1 < ns2 ? ns1 : ns2;
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int ret = 0;
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while (n--)
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if ((ret = *(unsigned char *) s1++ - *(unsigned char *) s2++) != 0)
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break;
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return ret;
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}
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#endif
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typedef int (*proto_t) (const CHAR *, const CHAR *);
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IMPL (STUPID_STRCMP, 1)
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IMPL (SIMPLE_STRCMP, 1)
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IMPL (STRCMP, 1)
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static int
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check_result (impl_t *impl,
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const CHAR *s1, const CHAR *s2,
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int exp_result)
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{
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int result = CALL (impl, s1, s2);
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if ((exp_result == 0 && result != 0)
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|| (exp_result < 0 && result >= 0)
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|| (exp_result > 0 && result <= 0))
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{
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error (0, 0, "Wrong result in function %s %d %d", impl->name,
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result, exp_result);
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ret = 1;
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return -1;
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}
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return 0;
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}
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static void
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do_one_test (impl_t *impl,
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const CHAR *s1, const CHAR *s2,
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int exp_result)
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{
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if (check_result (impl, s1, s2, exp_result) < 0)
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return;
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}
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static void
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do_test (size_t align1, size_t align2, size_t len, int max_char,
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int exp_result)
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{
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6c4009 |
size_t i;
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6c4009 |
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CHAR *s1, *s2;
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if (len == 0)
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return;
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align1 &= 63;
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6c4009 |
if (align1 + (len + 1) * CHARBYTES >= page_size)
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6c4009 |
return;
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6c4009 |
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align2 &= 63;
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6c4009 |
if (align2 + (len + 1) * CHARBYTES >= page_size)
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6c4009 |
return;
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6c4009 |
|
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/* Put them close to the end of page. */
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i = align1 + CHARBYTES * (len + 2);
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s1 = (CHAR *) (buf1 + ((page_size - i) / 16 * 16) + align1);
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i = align2 + CHARBYTES * (len + 2);
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s2 = (CHAR *) (buf2 + ((page_size - i) / 16 * 16) + align2);
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6c4009 |
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for (i = 0; i < len; i++)
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s1[i] = s2[i] = 1 + (23 << ((CHARBYTES - 1) * 8)) * i % max_char;
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s1[len] = s2[len] = 0;
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s1[len + 1] = 23;
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s2[len + 1] = 24 + exp_result;
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6c4009 |
s2[len - 1] -= exp_result;
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6c4009 |
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FOR_EACH_IMPL (impl, 0)
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do_one_test (impl, s1, s2, exp_result);
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}
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static void
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do_random_tests (void)
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{
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UCHAR *p1 = (UCHAR *) (buf1 + page_size - 512 * CHARBYTES);
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UCHAR *p2 = (UCHAR *) (buf2 + page_size - 512 * CHARBYTES);
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6c4009 |
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for (size_t n = 0; n < ITERATIONS; n++)
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{
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/* for wcscmp case align1 and align2 mean here alignment
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in wchar_t symbols, it equal 4*k alignment in bytes, we
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don't check other alignments like for example
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p1 = (wchar_t *)(buf1 + 1)
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because it's wrong using of wchar_t type. */
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6c4009 |
size_t align1 = random () & 31;
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6c4009 |
size_t align2;
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if (random () & 1)
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align2 = random () & 31;
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else
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align2 = align1 + (random () & 24);
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size_t pos = random () & 511;
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size_t j = align1 > align2 ? align1 : align2;
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if (pos + j >= 511)
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pos = 510 - j - (random () & 7);
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6c4009 |
size_t len1 = random () & 511;
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if (pos >= len1 && (random () & 1))
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len1 = pos + (random () & 7);
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6c4009 |
if (len1 + j >= 512)
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len1 = 511 - j - (random () & 7);
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6c4009 |
size_t len2;
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6c4009 |
if (pos >= len1)
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6c4009 |
len2 = len1;
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else
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len2 = len1 + (len1 != 511 - j ? random () % (511 - j - len1) : 0);
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j = (pos > len2 ? pos : len2) + align1 + 64;
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6c4009 |
if (j > 512)
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6c4009 |
j = 512;
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6c4009 |
for (size_t i = 0; i < j; ++i)
|
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6c4009 |
{
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6c4009 |
p1[i] = random () & 255;
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6c4009 |
if (i < len1 + align1 && !p1[i])
|
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6c4009 |
{
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6c4009 |
p1[i] = random () & 255;
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6c4009 |
if (!p1[i])
|
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6c4009 |
p1[i] = 1 + (random () & 127);
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6c4009 |
}
|
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6c4009 |
}
|
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6c4009 |
for (size_t i = 0; i < j; ++i)
|
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6c4009 |
{
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|
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6c4009 |
p2[i] = random () & 255;
|
|
Packit |
6c4009 |
if (i < len2 + align2 && !p2[i])
|
|
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6c4009 |
{
|
|
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6c4009 |
p2[i] = random () & 255;
|
|
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6c4009 |
if (!p2[i])
|
|
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6c4009 |
p2[i] = 1 + (random () & 127);
|
|
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6c4009 |
}
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
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6c4009 |
int result = 0;
|
|
Packit |
6c4009 |
MEMCPY (p2 + align2, p1 + align1, pos);
|
|
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6c4009 |
if (pos < len1)
|
|
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6c4009 |
{
|
|
Packit |
6c4009 |
if (p2[align2 + pos] == p1[align1 + pos])
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
p2[align2 + pos] = random () & 255;
|
|
Packit |
6c4009 |
if (p2[align2 + pos] == p1[align1 + pos])
|
|
Packit |
6c4009 |
p2[align2 + pos] = p1[align1 + pos] + 3 + (random () & 127);
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
if (p1[align1 + pos] < p2[align2 + pos])
|
|
Packit |
6c4009 |
result = -1;
|
|
Packit |
6c4009 |
else
|
|
Packit |
6c4009 |
result = 1;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
p1[len1 + align1] = 0;
|
|
Packit |
6c4009 |
p2[len2 + align2] = 0;
|
|
Packit |
6c4009 |
|
|
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6c4009 |
FOR_EACH_IMPL (impl, 1)
|
|
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6c4009 |
{
|
|
Packit |
6c4009 |
int r = CALL (impl, (CHAR *) (p1 + align1), (CHAR *) (p2 + align2));
|
|
Packit |
6c4009 |
/* Test whether on 64-bit architectures where ABI requires
|
|
Packit |
6c4009 |
callee to promote has the promotion been done. */
|
|
Packit |
6c4009 |
asm ("" : "=g" (r) : "0" (r));
|
|
Packit |
6c4009 |
if ((r == 0 && result)
|
|
Packit |
6c4009 |
|| (r < 0 && result >= 0)
|
|
Packit |
6c4009 |
|| (r > 0 && result <= 0))
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
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",
|
|
Packit |
6c4009 |
n, impl->name, (size_t) (p1 + align1) & 63, (size_t) (p1 + align2) & 63, len1, len2, pos, r, result, p1, p2);
|
|
Packit |
6c4009 |
ret = 1;
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|
Packit |
6c4009 |
}
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|
Packit |
6c4009 |
}
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|
Packit |
6c4009 |
}
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Packit |
6c4009 |
}
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Packit |
6c4009 |
|
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Packit |
6c4009 |
static void
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|
Packit |
6c4009 |
check (void)
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|
Packit |
6c4009 |
{
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|
Packit |
6c4009 |
CHAR *s1 = (CHAR *) (buf1 + 0xb2c);
|
|
Packit |
6c4009 |
CHAR *s2 = (CHAR *) (buf1 + 0xfd8);
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
STRCPY(s1, L("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrs"));
|
|
Packit |
6c4009 |
STRCPY(s2, L("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijkLMNOPQRSTUV"));
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* Check correct working for negatives values */
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
s1[0] = 1;
|
|
Packit |
6c4009 |
s2[0] = 1;
|
|
Packit |
6c4009 |
s1[1] = 1;
|
|
Packit |
6c4009 |
s2[1] = 1;
|
|
Packit |
6c4009 |
s1[2] = -1;
|
|
Packit |
6c4009 |
s2[2] = 3;
|
|
Packit |
6c4009 |
s1[3] = 0;
|
|
Packit |
6c4009 |
s2[3] = -1;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* Check possible overflow bug, actual more for wcscmp */
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
s1[7] = CHAR__MIN;
|
|
Packit |
6c4009 |
s2[7] = CHAR__MAX;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
size_t l1 = STRLEN (s1);
|
|
Packit |
6c4009 |
size_t l2 = STRLEN (s2);
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
for (size_t i1 = 0; i1 < l1; i1++)
|
|
Packit |
6c4009 |
for (size_t i2 = 0; i2 < l2; i2++)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
int exp_result = SIMPLE_STRCMP (s1 + i1, s2 + i2);
|
|
Packit |
6c4009 |
FOR_EACH_IMPL (impl, 0)
|
|
Packit |
6c4009 |
check_result (impl, s1 + i1, s2 + i2, exp_result);
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
/* Test cases where there are multiple zero bytes after the first. */
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
for (size_t i = 0; i < 16 + 1; i++)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
s1[i] = 0x00;
|
|
Packit |
6c4009 |
s2[i] = 0x00;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
for (size_t i = 0; i < 16; i++)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
int exp_result;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
for (int val = 0x01; val < 0x100; val++)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
for (size_t j = 0; j < i; j++)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
s1[j] = val;
|
|
Packit |
6c4009 |
s2[j] = val;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
s2[i] = val;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
exp_result = SIMPLE_STRCMP (s1, s2);
|
|
Packit |
6c4009 |
FOR_EACH_IMPL (impl, 0)
|
|
Packit |
6c4009 |
check_result (impl, s1, s2, exp_result);
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
int
|
|
Packit |
6c4009 |
test_main (void)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
size_t i;
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
test_init ();
|
|
Packit |
6c4009 |
check();
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
printf ("%23s", "");
|
|
Packit |
6c4009 |
FOR_EACH_IMPL (impl, 0)
|
|
Packit |
6c4009 |
printf ("\t%s", impl->name);
|
|
Packit |
6c4009 |
putchar ('\n');
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
for (i = 1; i < 32; ++i)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
do_test (CHARBYTES * i, CHARBYTES * i, i, MIDCHAR, 0);
|
|
Packit |
6c4009 |
do_test (CHARBYTES * i, CHARBYTES * i, i, MIDCHAR, 1);
|
|
Packit |
6c4009 |
do_test (CHARBYTES * i, CHARBYTES * i, i, MIDCHAR, -1);
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
for (i = 1; i < 10 + CHARBYTESLOG; ++i)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
do_test (0, 0, 2 << i, MIDCHAR, 0);
|
|
Packit |
6c4009 |
do_test (0, 0, 2 << i, LARGECHAR, 0);
|
|
Packit |
6c4009 |
do_test (0, 0, 2 << i, MIDCHAR, 1);
|
|
Packit |
6c4009 |
do_test (0, 0, 2 << i, LARGECHAR, 1);
|
|
Packit |
6c4009 |
do_test (0, 0, 2 << i, MIDCHAR, -1);
|
|
Packit |
6c4009 |
do_test (0, 0, 2 << i, LARGECHAR, -1);
|
|
Packit |
6c4009 |
do_test (0, CHARBYTES * i, 2 << i, MIDCHAR, 1);
|
|
Packit |
6c4009 |
do_test (CHARBYTES * i, CHARBYTES * (i + 1), 2 << i, LARGECHAR, 1);
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
for (i = 1; i < 8; ++i)
|
|
Packit |
6c4009 |
{
|
|
Packit |
6c4009 |
do_test (CHARBYTES * i, 2 * CHARBYTES * i, 8 << i, MIDCHAR, 0);
|
|
Packit |
6c4009 |
do_test (2 * CHARBYTES * i, CHARBYTES * i, 8 << i, LARGECHAR, 0);
|
|
Packit |
6c4009 |
do_test (CHARBYTES * i, 2 * CHARBYTES * i, 8 << i, MIDCHAR, 1);
|
|
Packit |
6c4009 |
do_test (2 * CHARBYTES * i, CHARBYTES * i, 8 << i, LARGECHAR, 1);
|
|
Packit |
6c4009 |
do_test (CHARBYTES * i, 2 * CHARBYTES * i, 8 << i, MIDCHAR, -1);
|
|
Packit |
6c4009 |
do_test (2 * CHARBYTES * i, CHARBYTES * i, 8 << i, LARGECHAR, -1);
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
do_random_tests ();
|
|
Packit |
6c4009 |
return ret;
|
|
Packit |
6c4009 |
}
|
|
Packit |
6c4009 |
|
|
Packit |
6c4009 |
#include <support/test-driver.c>
|