aboutsummaryrefslogtreecommitdiff
path: root/string/test-memcmp.c
diff options
context:
space:
mode:
Diffstat (limited to 'string/test-memcmp.c')
-rw-r--r--string/test-memcmp.c525
1 files changed, 0 insertions, 525 deletions
diff --git a/string/test-memcmp.c b/string/test-memcmp.c
deleted file mode 100644
index a7969edaea..0000000000
--- a/string/test-memcmp.c
+++ /dev/null
@@ -1,525 +0,0 @@
-/* Test and measure memcmp functions.
- Copyright (C) 1999-2017 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Written by Jakub Jelinek <jakub@redhat.com>, 1999.
- Added wmemcmp 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 "wmemcmp"
-#else
-# define TEST_NAME "memcmp"
-#endif
-#include "test-string.h"
-#ifdef WIDE
-# include <inttypes.h>
-# include <wchar.h>
-
-# define MEMCMP wmemcmp
-# define MEMCPY wmemcpy
-# define SIMPLE_MEMCMP simple_wmemcmp
-# define CHAR wchar_t
-# define UCHAR wchar_t
-# define CHARBYTES 4
-# define CHAR__MIN WCHAR_MIN
-# define CHAR__MAX WCHAR_MAX
-int
-simple_wmemcmp (const wchar_t *s1, const wchar_t *s2, size_t n)
-{
- int ret = 0;
- /* Warning!
- wmemcmp has to use SIGNED comparison for elements.
- memcmp has to use UNSIGNED comparison for elemnts.
- */
- while (n-- && (ret = *s1 < *s2 ? -1 : *s1 == *s2 ? 0 : 1) == 0) {s1++; s2++;}
- return ret;
-}
-#else
-# include <limits.h>
-
-# define MEMCMP memcmp
-# define MEMCPY memcpy
-# define SIMPLE_MEMCMP simple_memcmp
-# define CHAR char
-# define MAX_CHAR 255
-# define UCHAR unsigned char
-# define CHARBYTES 1
-# define CHAR__MIN CHAR_MIN
-# define CHAR__MAX CHAR_MAX
-
-int
-simple_memcmp (const char *s1, const char *s2, size_t n)
-{
- int ret = 0;
-
- while (n-- && (ret = *(unsigned char *) s1++ - *(unsigned char *) s2++) == 0);
- return ret;
-}
-#endif
-
-typedef int (*proto_t) (const CHAR *, const CHAR *, size_t);
-
-IMPL (SIMPLE_MEMCMP, 0)
-IMPL (MEMCMP, 1)
-
-static int
-check_result (impl_t *impl, const CHAR *s1, const CHAR *s2, size_t len,
- int exp_result)
-{
- int result = CALL (impl, s1, s2, len);
- 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, size_t len,
- int exp_result)
-{
- if (check_result (impl, s1, s2, len, exp_result) < 0)
- return;
-}
-
-static void
-do_test (size_t align1, size_t align2, size_t len, 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;
-
- s1 = (CHAR *) (buf1 + align1);
- s2 = (CHAR *) (buf2 + align2);
-
- for (i = 0; i < len; i++)
- s1[i] = s2[i] = 1 + (23 << ((CHARBYTES - 1) * 8)) * i % CHAR__MAX;
-
- s1[len] = align1;
- s2[len] = align2;
- s2[len - 1] -= exp_result;
-
- FOR_EACH_IMPL (impl, 0)
- do_one_test (impl, s1, s2, len, exp_result);
-}
-
-static void
-do_random_tests (void)
-{
- size_t i, j, n, align1, align2, pos, len;
- int result;
- long r;
- UCHAR *p1 = (UCHAR *) (buf1 + page_size - 512 * CHARBYTES);
- UCHAR *p2 = (UCHAR *) (buf2 + page_size - 512 * CHARBYTES);
-
- for (n = 0; n < ITERATIONS; n++)
- {
- align1 = random () & 31;
- if (random () & 1)
- align2 = random () & 31;
- else
- align2 = align1 + (random () & 24);
- pos = random () & 511;
- j = align1;
- if (align2 > j)
- j = align2;
- if (pos + j >= 512)
- pos = 511 - j - (random () & 7);
- len = random () & 511;
- if (len + j >= 512)
- len = 511 - j - (random () & 7);
- j = len + align1 + 64;
- if (j > 512) j = 512;
- for (i = 0; i < j; ++i)
- p1[i] = random () & 255;
- for (i = 0; i < j; ++i)
- p2[i] = random () & 255;
-
- result = 0;
- if (pos >= len)
- MEMCPY ((CHAR *) p2 + align2, (const CHAR *) p1 + align1, len);
- else
- {
- MEMCPY ((CHAR *) p2 + align2, (const CHAR *) p1 + align1, pos);
- 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;
- }
-
- FOR_EACH_IMPL (impl, 1)
- {
- r = CALL (impl, (CHAR *) p1 + align1, (const CHAR *) p2 + align2,
- len);
- if ((r == 0 && result)
- || (r < 0 && result >= 0)
- || (r > 0 && result <= 0))
- {
- error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd, %zd) %ld != %d, p1 %p p2 %p",
- n, impl->name, align1 * CHARBYTES & 63, align2 * CHARBYTES & 63, len, pos, r, result, p1, p2);
- ret = 1;
- }
- }
- }
-}
-
-static void
-check1 (void)
-{
- CHAR s1[116], s2[116];
- int n, exp_result;
-
- s1[0] = -108;
- s2[0] = -108;
- s1[1] = 99;
- s2[1] = 99;
- s1[2] = -113;
- s2[2] = -113;
- s1[3] = 1;
- s2[3] = 1;
- s1[4] = 116;
- s2[4] = 116;
- s1[5] = 99;
- s2[5] = 99;
- s1[6] = -113;
- s2[6] = -113;
- s1[7] = 1;
- s2[7] = 1;
- s1[8] = 84;
- s2[8] = 84;
- s1[9] = 99;
- s2[9] = 99;
- s1[10] = -113;
- s2[10] = -113;
- s1[11] = 1;
- s2[11] = 1;
- s1[12] = 52;
- s2[12] = 52;
- s1[13] = 99;
- s2[13] = 99;
- s1[14] = -113;
- s2[14] = -113;
- s1[15] = 1;
- s2[15] = 1;
- s1[16] = -76;
- s2[16] = -76;
- s1[17] = -14;
- s2[17] = -14;
- s1[18] = -109;
- s2[18] = -109;
- s1[19] = 1;
- s2[19] = 1;
- s1[20] = -108;
- s2[20] = -108;
- s1[21] = -14;
- s2[21] = -14;
- s1[22] = -109;
- s2[22] = -109;
- s1[23] = 1;
- s2[23] = 1;
- s1[24] = 84;
- s2[24] = 84;
- s1[25] = -15;
- s2[25] = -15;
- s1[26] = -109;
- s2[26] = -109;
- s1[27] = 1;
- s2[27] = 1;
- s1[28] = 52;
- s2[28] = 52;
- s1[29] = -15;
- s2[29] = -15;
- s1[30] = -109;
- s2[30] = -109;
- s1[31] = 1;
- s2[31] = 1;
- s1[32] = 20;
- s2[32] = 20;
- s1[33] = -15;
- s2[33] = -15;
- s1[34] = -109;
- s2[34] = -109;
- s1[35] = 1;
- s2[35] = 1;
- s1[36] = 20;
- s2[36] = 20;
- s1[37] = -14;
- s2[37] = -14;
- s1[38] = -109;
- s2[38] = -109;
- s1[39] = 1;
- s2[39] = 1;
- s1[40] = 52;
- s2[40] = 52;
- s1[41] = -14;
- s2[41] = -14;
- s1[42] = -109;
- s2[42] = -109;
- s1[43] = 1;
- s2[43] = 1;
- s1[44] = 84;
- s2[44] = 84;
- s1[45] = -14;
- s2[45] = -14;
- s1[46] = -109;
- s2[46] = -109;
- s1[47] = 1;
- s2[47] = 1;
- s1[48] = 116;
- s2[48] = 116;
- s1[49] = -14;
- s2[49] = -14;
- s1[50] = -109;
- s2[50] = -109;
- s1[51] = 1;
- s2[51] = 1;
- s1[52] = 116;
- s2[52] = 116;
- s1[53] = -15;
- s2[53] = -15;
- s1[54] = -109;
- s2[54] = -109;
- s1[55] = 1;
- s2[55] = 1;
- s1[56] = -44;
- s2[56] = -44;
- s1[57] = -14;
- s2[57] = -14;
- s1[58] = -109;
- s2[58] = -109;
- s1[59] = 1;
- s2[59] = 1;
- s1[60] = -108;
- s2[60] = -108;
- s1[61] = -15;
- s2[61] = -15;
- s1[62] = -109;
- s2[62] = -109;
- s1[63] = 1;
- s2[63] = 1;
- s1[64] = -76;
- s2[64] = -76;
- s1[65] = -15;
- s2[65] = -15;
- s1[66] = -109;
- s2[66] = -109;
- s1[67] = 1;
- s2[67] = 1;
- s1[68] = -44;
- s2[68] = -44;
- s1[69] = -15;
- s2[69] = -15;
- s1[70] = -109;
- s2[70] = -109;
- s1[71] = 1;
- s2[71] = 1;
- s1[72] = -12;
- s2[72] = -12;
- s1[73] = -15;
- s2[73] = -15;
- s1[74] = -109;
- s2[74] = -109;
- s1[75] = 1;
- s2[75] = 1;
- s1[76] = -12;
- s2[76] = -12;
- s1[77] = -14;
- s2[77] = -14;
- s1[78] = -109;
- s2[78] = -109;
- s1[79] = 1;
- s2[79] = 1;
- s1[80] = 20;
- s2[80] = -68;
- s1[81] = -12;
- s2[81] = 64;
- s1[82] = -109;
- s2[82] = -106;
- s1[83] = 1;
- s2[83] = 1;
- s1[84] = -12;
- s2[84] = -12;
- s1[85] = -13;
- s2[85] = -13;
- s1[86] = -109;
- s2[86] = -109;
- s1[87] = 1;
- s2[87] = 1;
- s1[88] = -44;
- s2[88] = -44;
- s1[89] = -13;
- s2[89] = -13;
- s1[90] = -109;
- s2[90] = -109;
- s1[91] = 1;
- s2[91] = 1;
- s1[92] = -76;
- s2[92] = -76;
- s1[93] = -13;
- s2[93] = -13;
- s1[94] = -109;
- s2[94] = -109;
- s1[95] = 1;
- s2[95] = 1;
- s1[96] = -108;
- s2[96] = -108;
- s1[97] = -13;
- s2[97] = -13;
- s1[98] = -109;
- s2[98] = -109;
- s1[99] = 1;
- s2[99] = 1;
- s1[100] = 116;
- s2[100] = 116;
- s1[101] = CHAR__MIN;
- s2[101] = CHAR__MAX;
- s1[102] = -109;
- s2[102] = -109;
- s1[103] = 1;
- s2[103] = 1;
- s1[104] = 84;
- s2[104] = 84;
- s1[105] = -13;
- s2[105] = -13;
- s1[106] = -109;
- s2[106] = -109;
- s1[107] = 1;
- s2[107] = 1;
- s1[108] = 52;
- s2[108] = 52;
- s1[109] = -13;
- s2[109] = -13;
- s1[110] = -109;
- s2[110] = -109;
- s1[111] = 1;
- s2[111] = 1;
- s1[112] = CHAR__MAX;
- s2[112] = CHAR__MIN;
- s1[113] = -13;
- s2[113] = -13;
- s1[114] = -109;
- s2[114] = -109;
- s1[115] = 1;
- s2[115] = 1;
-
- n = 116;
- for (size_t i = 0; i < n; i++)
- {
- exp_result = SIMPLE_MEMCMP (s1 + i, s2 + i, n - i);
- FOR_EACH_IMPL (impl, 0)
- check_result (impl, s1 + i, s2 + i, n - i, exp_result);
- }
-}
-
-/* This test checks that memcmp doesn't overrun buffers. */
-static void
-check2 (void)
-{
- size_t max_length = page_size / sizeof (CHAR);
-
- /* Initialize buf2 to the same values as buf1. The bug requires the
- last compared byte to be different. */
- memcpy (buf2, buf1, page_size);
- ((char *) buf2)[page_size - 1] ^= 0x11;
-
- for (size_t length = 1; length < max_length; length++)
- {
- CHAR *s1 = (CHAR *) buf1 + max_length - length;
- CHAR *s2 = (CHAR *) buf2 + max_length - length;
-
- const int exp_result = SIMPLE_MEMCMP (s1, s2, length);
-
- FOR_EACH_IMPL (impl, 0)
- check_result (impl, s1, s2, length, exp_result);
- }
-}
-
-int
-test_main (void)
-{
- size_t i;
-
- test_init ();
-
- check1 ();
- check2 ();
-
- printf ("%23s", "");
- FOR_EACH_IMPL (impl, 0)
- printf ("\t%s", impl->name);
- putchar ('\n');
-
- for (i = 1; i < 16; ++i)
- {
- do_test (i * CHARBYTES, i * CHARBYTES, i, 0);
- do_test (i * CHARBYTES, i * CHARBYTES, i, 1);
- do_test (i * CHARBYTES, i * CHARBYTES, i, -1);
- }
-
- for (i = 0; i < 16; ++i)
- {
- do_test (0, 0, i, 0);
- do_test (0, 0, i, 1);
- do_test (0, 0, i, -1);
- }
-
- for (i = 1; i < 10; ++i)
- {
- do_test (0, 0, 2 << i, 0);
- do_test (0, 0, 2 << i, 1);
- do_test (0, 0, 2 << i, -1);
- do_test (0, 0, 16 << i, 0);
- do_test ((8 - i) * CHARBYTES, (2 * i) * CHARBYTES, 16 << i, 0);
- do_test (0, 0, 16 << i, 1);
- do_test (0, 0, 16 << i, -1);
- }
-
- for (i = 1; i < 8; ++i)
- {
- do_test (i * CHARBYTES, 2 * (i * CHARBYTES), 8 << i, 0);
- do_test (i * CHARBYTES, 2 * (i * CHARBYTES), 8 << i, 1);
- do_test (i * CHARBYTES, 2 * (i * CHARBYTES), 8 << i, -1);
- }
-
- do_random_tests ();
- return ret;
-}
-
-#include <support/test-driver.c>
generated by cgit v1.2.3-70-g09d2 (git 2.50.0) at 2025-07-12 12:18:28 +0000