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Diffstat (limited to 'string/test-memmem.c')
| -rw-r--r-- | string/test-memmem.c | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/string/test-memmem.c b/string/test-memmem.c deleted file mode 100644 index 82fd93ccde..0000000000 --- a/string/test-memmem.c +++ /dev/null @@ -1,184 +0,0 @@ -/* Test and measure memmem functions. - Copyright (C) 2008-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Written by Ulrich Drepper <drepper@redhat.com>, 2008. - - 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 -#define TEST_NAME "memmem" -#define BUF1PAGES 20 -#define ITERATIONS 500 -#include "test-string.h" - -typedef char *(*proto_t) (const void *, size_t, const void *, size_t); -void *simple_memmem (const void *, size_t, const void *, size_t); - -IMPL (simple_memmem, 0) -IMPL (memmem, 1) - -void * -simple_memmem (const void *haystack, size_t haystack_len, const void *needle, - size_t needle_len) -{ - const char *begin; - const char *const last_possible - = (const char *) haystack + haystack_len - needle_len; - - if (needle_len == 0) - /* The first occurrence of the empty string is deemed to occur at - the beginning of the string. */ - return (void *) haystack; - - /* Sanity check, otherwise the loop might search through the whole - memory. */ - if (__glibc_unlikely (haystack_len < needle_len)) - return NULL; - - for (begin = (const char *) haystack; begin <= last_possible; ++begin) - if (begin[0] == ((const char *) needle)[0] && - !memcmp ((const void *) &begin[1], - (const void *) ((const char *) needle + 1), - needle_len - 1)) - return (void *) begin; - - return NULL; -} - -static int -check_result (impl_t *impl, const void *haystack, size_t haystack_len, - const void *needle, size_t needle_len, const void *expected) -{ - void *res; - - res = CALL (impl, haystack, haystack_len, needle, needle_len); - if (res != expected) - { - error (0, 0, "Wrong result in function %s %p %p", impl->name, - res, expected); - ret = 1; - return -1; - } - - return 0; -} - -static void -do_one_test (impl_t *impl, const void *haystack, size_t haystack_len, - const void *needle, size_t needle_len, const void *expected) -{ - if (check_result (impl, haystack, haystack_len, needle, needle_len, - expected) < 0) - return; -} - -static void -do_test (const char *str, size_t len, size_t idx) -{ - char tmpbuf[len]; - - memcpy (tmpbuf, buf1 + idx, len); - memcpy (buf1 + idx, str, len); - - FOR_EACH_IMPL (impl, 0) - do_one_test (impl, buf1, BUF1PAGES * page_size, str, len, buf1 + idx); - - memcpy (buf1 + idx, tmpbuf, len); -} - -static void -do_random_tests (void) -{ - for (size_t n = 0; n < ITERATIONS; ++n) - { - char tmpbuf[32]; - - size_t shift = random () % 11; - size_t rel = random () % ((2 << (shift + 1)) * 64); - size_t idx = MIN ((2 << shift) * 64 + rel, BUF1PAGES * page_size - 2); - size_t len = random () % (sizeof (tmpbuf) - 1) + 1; - len = MIN (len, BUF1PAGES * page_size - idx - 1); - memcpy (tmpbuf, buf1 + idx, len); - for (size_t i = random () % len / 2 + 1; i > 0; --i) - { - size_t off = random () % len; - char ch = '0' + random () % 10; - - buf1[idx + off] = ch; - } - - FOR_EACH_IMPL (impl, 0) - do_one_test (impl, buf1, BUF1PAGES * page_size, buf1 + idx, len, - buf1 + idx); - - memcpy (buf1 + idx, tmpbuf, len); - } -} - -static void -check1 (void) -{ - - const char search_buf_data[5] = { 0x56, 0x34, 0x12, 0x78, 0x78 }; - const char pattern[2] = { 0x78, 0x56 }; - void *search_buf = (void *) buf1 + page_size - sizeof search_buf_data; - void *exp_result; - - memcpy (search_buf, search_buf_data, sizeof search_buf_data); - exp_result = simple_memmem (search_buf, sizeof search_buf_data, - pattern, sizeof pattern); - FOR_EACH_IMPL (impl, 0) - check_result (impl, search_buf, sizeof search_buf_data, - pattern, sizeof pattern, exp_result); -} - -static const char *const strs[] = - { - "00000", "00112233", "0123456789", "0000111100001111", - "00000111110000022222", "012345678901234567890", - "abc0", "aaaa0", "abcabc0" - }; - - -int -test_main (void) -{ - size_t i; - - test_init (); - - check1 (); - - printf ("%23s", ""); - FOR_EACH_IMPL (impl, 0) - printf ("\t%s", impl->name); - putchar ('\n'); - - for (i = 0; i < BUF1PAGES * page_size; ++i) - buf1[i] = 60 + random () % 32; - - for (i = 0; i < sizeof (strs) / sizeof (strs[0]); ++i) - for (size_t j = 0; j < 120; j += 7) - { - size_t len = strlen (strs[i]); - - do_test (strs[i], len, j); - } - - do_random_tests (); - return ret; -} - -#include <support/test-driver.c> |