297 lines
7.0 KiB
C
297 lines
7.0 KiB
C
/* Test STRCHR 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 wcschr 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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# ifdef USE_FOR_STRCHRNUL
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# define TEST_NAME "strchrnul"
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# else
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# define TEST_NAME "strchr"
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# endif /* !USE_FOR_STRCHRNUL */
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#else
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# ifdef USE_FOR_STRCHRNUL
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# define TEST_NAME "wcschrnul"
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# else
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# define TEST_NAME "wcschr"
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# endif /* !USE_FOR_STRCHRNUL */
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#endif /* WIDE */
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#include "test-string.h"
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#ifndef WIDE
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# ifdef USE_FOR_STRCHRNUL
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# define STRCHR strchrnul
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# define stupid_STRCHR stupid_STRCHRNUL
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# define simple_STRCHR simple_STRCHRNUL
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# else
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# define STRCHR strchr
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# endif /* !USE_FOR_STRCHRNUL */
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# define STRLEN strlen
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# define CHAR char
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# define BIG_CHAR CHAR_MAX
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# define MIDDLE_CHAR 127
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# define SMALL_CHAR 23
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# define UCHAR unsigned char
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# define L(s) s
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#else
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# include <wchar.h>
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# ifdef USE_FOR_STRCHRNUL
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# define STRCHR wcschrnul
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# define stupid_STRCHR stupid_WCSCHRNUL
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# define simple_STRCHR simple_WCSCHRNUL
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# else
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# define STRCHR wcschr
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# endif /* !USE_FOR_STRCHRNUL */
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# define STRLEN wcslen
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# define CHAR wchar_t
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# define BIG_CHAR WCHAR_MAX
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# define MIDDLE_CHAR 1121
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# define SMALL_CHAR 851
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# define UCHAR wchar_t
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# define L(s) L ## s
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#endif /* WIDE */
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#ifdef USE_FOR_STRCHRNUL
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# define NULLRET(endptr) endptr
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#else
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# define NULLRET(endptr) NULL
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#endif /* !USE_FOR_STRCHRNUL */
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typedef CHAR *(*proto_t) (const CHAR *, int);
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CHAR *
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simple_STRCHR (const CHAR *s, int c)
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{
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for (; *s != (CHAR) c; ++s)
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if (*s == '\0')
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return NULLRET ((CHAR *) s);
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return (CHAR *) s;
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}
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CHAR *
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stupid_STRCHR (const CHAR *s, int c)
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{
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size_t n = STRLEN (s) + 1;
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while (n--)
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if (*s++ == (CHAR) c)
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return (CHAR *) s - 1;
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return NULLRET ((CHAR *) s - 1);
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}
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IMPL (stupid_STRCHR, 0)
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IMPL (simple_STRCHR, 0)
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IMPL (STRCHR, 1)
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static int
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check_result (impl_t *impl, const CHAR *s, int c, const CHAR *exp_res)
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{
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CHAR *res = CALL (impl, s, c);
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if (res != exp_res)
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{
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error (0, 0, "Wrong result in function %s %#x %p %p", impl->name,
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c, res, exp_res);
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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 CHAR *s, int c, const CHAR *exp_res)
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{
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if (check_result (impl, s, c, exp_res) < 0)
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return;
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}
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static void
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do_test (size_t align, size_t pos, size_t len, int seek_char, int max_char)
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/* For wcschr: align here means align not in bytes,
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but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t))
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len for wcschr here isn't in bytes but it's number of wchar_t symbols. */
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{
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size_t i;
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CHAR *result;
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CHAR *buf = (CHAR *) buf1;
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align &= 15;
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if ((align + len) * sizeof (CHAR) >= page_size)
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return;
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for (i = 0; i < len; ++i)
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{
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buf[align + i] = 32 + 23 * i % max_char;
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if (buf[align + i] == seek_char)
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buf[align + i] = seek_char + 1;
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else if (buf[align + i] == 0)
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buf[align + i] = 1;
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}
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buf[align + len] = 0;
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if (pos < len)
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{
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buf[align + pos] = seek_char;
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result = buf + align + pos;
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}
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else if (seek_char == 0)
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result = buf + align + len;
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else
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result = NULLRET (buf + align + len);
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FOR_EACH_IMPL (impl, 0)
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do_one_test (impl, buf + align, seek_char, 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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size_t i, j, n, align, pos, len;
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int seek_char;
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CHAR *result;
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UCHAR *p = (UCHAR *) (buf1 + page_size - 512 * sizeof (CHAR));
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for (n = 0; n < ITERATIONS; n++)
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{
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/* For wcschr: align here means align not in bytes, but in wchar_ts,
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in bytes it will equal to align * (sizeof (wchar_t)). */
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align = random () & 15;
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pos = random () & 511;
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seek_char = random () & 255;
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if (pos + align >= 511)
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pos = 510 - align - (random () & 7);
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/* len for wcschr here isn't in bytes but it's number of wchar_t
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symbols. */
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len = random () & 511;
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if ((pos == len && seek_char)
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|| (pos > len && (random () & 1)))
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len = pos + 1 + (random () & 7);
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if (len + align >= 512)
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len = 511 - align - (random () & 7);
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if (pos == len && seek_char)
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len = pos + 1;
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j = (pos > len ? pos : 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 == pos + align)
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p[i] = seek_char;
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else 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 < pos + align && p[i] == seek_char)
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p[i] = seek_char + 13;
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if (i < len + align && !p[i])
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{
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p[i] = seek_char - 13;
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if (!p[i])
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p[i] = 140;
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}
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}
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}
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if (pos <= len)
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result = (CHAR *) (p + pos + align);
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else if (seek_char == 0)
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result = (CHAR *) (p + len + align);
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else
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result = NULLRET ((CHAR *) (p + len + align));
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FOR_EACH_IMPL (impl, 1)
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if (CALL (impl, (CHAR *) (p + align), seek_char) != result)
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{
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error (0, 0, "Iteration %zd - wrong result in function \
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%s (align in bytes: %zd, seek_char: %d, len: %zd, pos: %zd) %p != %p, p %p",
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n, impl->name, align * sizeof (CHAR), seek_char, len, pos,
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CALL (impl, (CHAR *) (p + align), seek_char), result, p);
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ret = 1;
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}
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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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CHAR s[] __attribute__((aligned(16))) = L ("\xff");
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CHAR c = L ('\xfe');
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CHAR *exp_result = stupid_STRCHR (s, c);
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FOR_EACH_IMPL (impl, 0)
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check_result (impl, s, c, exp_result);
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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 ("%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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for (i = 1; i < 8; ++i)
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{
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do_test (0, 16 << i, 2048, SMALL_CHAR, MIDDLE_CHAR);
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do_test (i, 16 << i, 2048, SMALL_CHAR, MIDDLE_CHAR);
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}
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for (i = 1; i < 8; ++i)
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{
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do_test (i, 64, 256, SMALL_CHAR, MIDDLE_CHAR);
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do_test (i, 64, 256, SMALL_CHAR, BIG_CHAR);
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}
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for (i = 0; i < 32; ++i)
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{
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do_test (0, i, i + 1, SMALL_CHAR, MIDDLE_CHAR);
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do_test (0, i, i + 1, SMALL_CHAR, BIG_CHAR);
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}
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for (i = 1; i < 8; ++i)
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{
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do_test (0, 16 << i, 2048, 0, MIDDLE_CHAR);
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do_test (i, 16 << i, 2048, 0, MIDDLE_CHAR);
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}
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for (i = 1; i < 8; ++i)
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{
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do_test (i, 64, 256, 0, MIDDLE_CHAR);
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do_test (i, 64, 256, 0, BIG_CHAR);
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}
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for (i = 0; i < 32; ++i)
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{
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do_test (0, i, i + 1, 0, MIDDLE_CHAR);
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do_test (0, i, i + 1, 0, BIG_CHAR);
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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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