168 lines
3.6 KiB
C
168 lines
3.6 KiB
C
/* Test and measure STRLEN functions.
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Copyright (C) 1999-2017 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 wcslen 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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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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<http://www.gnu.org/licenses/>. */
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#define TEST_MAIN
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#ifndef WIDE
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# define TEST_NAME "strlen"
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#else
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# define TEST_NAME "wcslen"
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#endif
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#include "test-string.h"
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#ifndef WIDE
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# define STRLEN strlen
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# define CHAR char
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# define MAX_CHAR CHAR_MAX
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#else
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# include <wchar.h>
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# define STRLEN wcslen
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# define CHAR wchar_t
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# define MAX_CHAR WCHAR_MAX
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#endif
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typedef size_t (*proto_t) (const CHAR *);
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size_t
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simple_STRLEN (const CHAR *s)
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{
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const CHAR *p;
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for (p = s; *p; ++p);
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return p - s;
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}
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#ifndef WIDE
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size_t
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builtin_strlen (const CHAR *p)
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{
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return __builtin_strlen (p);
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}
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IMPL (builtin_strlen, 0)
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#endif
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IMPL (simple_STRLEN, 0)
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IMPL (STRLEN, 1)
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static void
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do_one_test (impl_t *impl, const CHAR *s, size_t exp_len)
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{
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size_t len = CALL (impl, s);
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if (len != exp_len)
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{
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error (0, 0, "Wrong result in function %s %zd %zd", impl->name,
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len, exp_len);
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ret = 1;
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return;
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}
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}
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static void
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do_test (size_t align, size_t len)
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{
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size_t i;
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align &= 63;
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if (align + sizeof(CHAR) * len >= page_size)
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return;
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CHAR *buf = (CHAR *) (buf1);
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for (i = 0; i < len; ++i)
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buf[align + i] = 1 + 11111 * i % MAX_CHAR;
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buf[align + len] = 0;
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FOR_EACH_IMPL (impl, 0)
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do_one_test (impl, (CHAR *) (buf + align), 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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size_t i, j, n, align, len;
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CHAR *p = (CHAR *) (buf1 + page_size - 512 * sizeof(CHAR));
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for (n = 0; n < ITERATIONS; n++)
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{
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align = random () & 15;
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len = random () & 511;
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if (len + align > 510)
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len = 511 - align - (random () & 7);
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j = len + align + 64;
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if (j > 512)
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j = 512;
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for (i = 0; i < j; i++)
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{
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if (i == len + align)
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p[i] = 0;
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else
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{
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p[i] = random () & 255;
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if (i >= align && i < len + align && !p[i])
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p[i] = (random () & 127) + 1;
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}
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}
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FOR_EACH_IMPL (impl, 1)
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if (CALL (impl, (CHAR *) (p + align)) != len)
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{
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error (0, 0, "Iteration %zd - wrong result in function %s (%zd) %zd != %zd, p %p",
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n, impl->name, align, CALL (impl, (CHAR *) (p + align)),
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len, p);
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ret = 1;
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}
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}
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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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printf ("%20s", "");
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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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/* Checking with only 4 * N alignments for wcslen, other alignments are wrong for wchar_t type arrays*/
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for (i = 1; i < 8; ++i)
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{
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do_test (sizeof(CHAR) * i, i);
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do_test (0, i);
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}
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for (i = 2; i <= 12; ++i)
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{
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do_test (0, 1 << i);
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do_test (sizeof(CHAR) * 7, 1 << i);
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do_test (sizeof(CHAR) * i, 1 << i);
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do_test (sizeof(CHAR) * i, (size_t)((1 << i) / 1.5));
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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 "../test-skeleton.c"
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