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Also, change sources.redhat.com to sourceware.org. This patch was automatically generated by running the following shell script, which uses GNU sed, and which avoids modifying files imported from upstream: sed -ri ' s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g ' \ $(find $(git ls-files) -prune -type f \ ! -name '*.po' \ ! -name 'ChangeLog*' \ ! -path COPYING ! -path COPYING.LIB \ ! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \ ! -path manual/texinfo.tex ! -path scripts/config.guess \ ! -path scripts/config.sub ! -path scripts/install-sh \ ! -path scripts/mkinstalldirs ! -path scripts/move-if-change \ ! -path INSTALL ! -path locale/programs/charmap-kw.h \ ! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \ ! '(' -name configure \ -execdir test -f configure.ac -o -f configure.in ';' ')' \ ! '(' -name preconfigure \ -execdir test -f preconfigure.ac ';' ')' \ -print) and then by running 'make dist-prepare' to regenerate files built from the altered files, and then executing the following to cleanup: chmod a+x sysdeps/unix/sysv/linux/riscv/configure # Omit irrelevant whitespace and comment-only changes, # perhaps from a slightly-different Autoconf version. git checkout -f \ sysdeps/csky/configure \ sysdeps/hppa/configure \ sysdeps/riscv/configure \ sysdeps/unix/sysv/linux/csky/configure # Omit changes that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines git checkout -f \ sysdeps/powerpc/powerpc64/ppc-mcount.S \ sysdeps/unix/sysv/linux/s390/s390-64/syscall.S # Omit change that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
185 lines
4.8 KiB
C
185 lines
4.8 KiB
C
/* Test and measure memmem functions.
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Copyright (C) 2008-2019 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Written by Ulrich Drepper <drepper@redhat.com>, 2008.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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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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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#define TEST_MAIN
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#define TEST_NAME "memmem"
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#define BUF1PAGES 20
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#define ITERATIONS 500
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#include "test-string.h"
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typedef char *(*proto_t) (const void *, size_t, const void *, size_t);
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void *simple_memmem (const void *, size_t, const void *, size_t);
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IMPL (simple_memmem, 0)
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IMPL (memmem, 1)
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void *
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simple_memmem (const void *haystack, size_t haystack_len, const void *needle,
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size_t needle_len)
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{
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const char *begin;
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const char *const last_possible
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= (const char *) haystack + haystack_len - needle_len;
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if (needle_len == 0)
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/* The first occurrence of the empty string is deemed to occur at
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the beginning of the string. */
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return (void *) haystack;
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/* Sanity check, otherwise the loop might search through the whole
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memory. */
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if (__glibc_unlikely (haystack_len < needle_len))
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return NULL;
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for (begin = (const char *) haystack; begin <= last_possible; ++begin)
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if (begin[0] == ((const char *) needle)[0]
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&& !memcmp ((const void *) &begin[1],
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(const void *) ((const char *) needle + 1),
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needle_len - 1))
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return (void *) begin;
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return NULL;
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}
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static int
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check_result (impl_t *impl, const void *haystack, size_t haystack_len,
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const void *needle, size_t needle_len, const void *expected)
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{
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void *res;
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res = CALL (impl, haystack, haystack_len, needle, needle_len);
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if (res != expected)
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{
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error (0, 0, "Wrong result in function %s %p %p", impl->name,
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res, expected);
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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, const void *haystack, size_t haystack_len,
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const void *needle, size_t needle_len, const void *expected)
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{
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if (check_result (impl, haystack, haystack_len, needle, needle_len,
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expected) < 0)
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return;
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}
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static void
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do_test (const char *str, size_t len, size_t idx)
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{
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char tmpbuf[len];
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memcpy (tmpbuf, buf1 + idx, len);
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memcpy (buf1 + idx, str, len);
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FOR_EACH_IMPL (impl, 0)
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do_one_test (impl, buf1, BUF1PAGES * page_size, str, len, buf1 + idx);
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memcpy (buf1 + idx, tmpbuf, len);
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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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for (size_t n = 0; n < ITERATIONS; ++n)
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{
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char tmpbuf[32];
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size_t shift = random () % 11;
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size_t rel = random () % ((2 << (shift + 1)) * 64);
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size_t idx = MIN ((2 << shift) * 64 + rel, BUF1PAGES * page_size - 2);
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size_t len = random () % (sizeof (tmpbuf) - 1) + 1;
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len = MIN (len, BUF1PAGES * page_size - idx - 1);
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memcpy (tmpbuf, buf1 + idx, len);
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for (size_t i = random () % len / 2 + 1; i > 0; --i)
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{
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size_t off = random () % len;
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char ch = '0' + random () % 10;
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buf1[idx + off] = ch;
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}
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FOR_EACH_IMPL (impl, 0)
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do_one_test (impl, buf1, BUF1PAGES * page_size, buf1 + idx, len,
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buf1 + idx);
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memcpy (buf1 + idx, tmpbuf, len);
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}
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}
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static void
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check1 (void)
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{
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const char search_buf_data[5] = { 0x56, 0x34, 0x12, 0x78, 0x78 };
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const char pattern[2] = { 0x78, 0x56 };
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void *search_buf = (void *) buf1 + page_size - sizeof search_buf_data;
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void *exp_result;
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memcpy (search_buf, search_buf_data, sizeof search_buf_data);
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exp_result = simple_memmem (search_buf, sizeof search_buf_data,
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pattern, sizeof pattern);
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FOR_EACH_IMPL (impl, 0)
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check_result (impl, search_buf, sizeof search_buf_data,
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pattern, sizeof pattern, exp_result);
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}
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static const char *const strs[] =
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{
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"00000", "00112233", "0123456789", "0000111100001111",
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"00000111110000022222", "012345678901234567890",
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"abc0", "aaaa0", "abcabc0"
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};
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int
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test_main (void)
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{
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size_t i;
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test_init ();
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check1 ();
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printf ("%23s", "");
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FOR_EACH_IMPL (impl, 0)
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printf ("\t%s", impl->name);
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putchar ('\n');
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for (i = 0; i < BUF1PAGES * page_size; ++i)
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buf1[i] = 60 + random () % 32;
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for (i = 0; i < sizeof (strs) / sizeof (strs[0]); ++i)
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for (size_t j = 0; j < 120; j += 7)
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{
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size_t len = strlen (strs[i]);
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do_test (strs[i], len, j);
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}
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do_random_tests ();
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return ret;
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}
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#include <support/test-driver.c>
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