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Diffstat (limited to 'REORG.TODO/string/test-memchr.c')
| -rw-r--r-- | REORG.TODO/string/test-memchr.c | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/REORG.TODO/string/test-memchr.c b/REORG.TODO/string/test-memchr.c new file mode 100644 index 0000000000..73a93f0fc9 --- /dev/null +++ b/REORG.TODO/string/test-memchr.c @@ -0,0 +1,227 @@ +/* Test memchr 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. + + 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 +#ifndef WIDE +# define TEST_NAME "memchr" +#else +# define TEST_NAME "wmemchr" +#endif /* WIDE */ + +#include "test-string.h" +#include <stdint.h> + +#ifndef WIDE +# define MEMCHR memchr +# define CHAR char +# define UCHAR unsigned char +# define SIMPLE_MEMCHR simple_memchr +# define BIG_CHAR CHAR_MAX +# define SMALL_CHAR 127 +#else +# include <wchar.h> +# define MEMCHR wmemchr +# define CHAR wchar_t +# define UCHAR wchar_t +# define SIMPLE_MEMCHR simple_wmemchr +# define BIG_CHAR WCHAR_MAX +# define SMALL_CHAR 1273 +#endif /* WIDE */ + +typedef CHAR *(*proto_t) (const CHAR *, int, size_t); +CHAR *SIMPLE_MEMCHR (const CHAR *, int, size_t); + +IMPL (SIMPLE_MEMCHR, 0) +IMPL (MEMCHR, 1) + +CHAR * +SIMPLE_MEMCHR (const CHAR *s, int c, size_t n) +{ + while (n--) + if (*s++ == (CHAR) c) + return (CHAR *) s - 1; + return NULL; +} + +static void +do_one_test (impl_t *impl, const CHAR *s, int c, size_t n, CHAR *exp_res) +{ + CHAR *res = CALL (impl, s, c, n); + if (res != exp_res) + { + error (0, 0, "Wrong result in function %s %p %p", impl->name, + res, exp_res); + ret = 1; + return; + } +} + +static void +do_test (size_t align, size_t pos, size_t len, size_t n, int seek_char) +{ + size_t i; + CHAR *result; + + if ((align + len) * sizeof (CHAR) >= page_size) + return; + + CHAR *buf = (CHAR *) (buf1); + + for (i = 0; i < len; ++i) + { + buf[align + i] = 1 + 23 * i % SMALL_CHAR; + if (buf[align + i] == seek_char) + buf[align + i] = seek_char + 1; + } + buf[align + len] = 0; + + if (pos < len) + { + buf[align + pos] = seek_char; + buf[align + len] = -seek_char; + result = (CHAR *) (buf + align + pos); + } + else + { + result = NULL; + buf[align + len] = seek_char; + } + + FOR_EACH_IMPL (impl, 0) + do_one_test (impl, (CHAR *) (buf + align), seek_char, n, result); +} + +static void +do_random_tests (void) +{ + size_t i, j, n, align, pos, len; + int seek_char; + CHAR *result; + UCHAR *p = (UCHAR *) (buf1 + page_size) - 512; + + for (n = 0; n < ITERATIONS; n++) + { + align = random () & 15; + pos = random () & 511; + if (pos + align >= 512) + pos = 511 - align - (random () & 7); + len = random () & 511; + if (pos >= len) + len = pos + (random () & 7); + if (len + align >= 512) + len = 512 - align - (random () & 7); + seek_char = random () & BIG_CHAR; + j = len + align + 64; + if (j > 512) + j = 512; + + for (i = 0; i < j; i++) + { + if (i == pos + align) + p[i] = seek_char; + else + { + p[i] = random () & BIG_CHAR; + if (i < pos + align && p[i] == seek_char) + p[i] = seek_char + 13; + } + } + + if (pos < len) + { + size_t r = random (); + if ((r & 31) == 0) + len = ~(uintptr_t) (p + align) - ((r >> 5) & 31); + result = (CHAR *) (p + pos + align); + } + else + result = NULL; + + FOR_EACH_IMPL (impl, 1) + if (CALL (impl, (CHAR *) (p + align), seek_char, len) != result) + { + error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %d, %zd, %zd) %p != %p, p %p", + n, impl->name, align, seek_char, len, pos, + CALL (impl, (CHAR *) (p + align), seek_char, len), + result, p); + ret = 1; + } + } +} + +int +test_main (void) +{ + size_t i, j; + + test_init (); + + printf ("%20s", ""); + FOR_EACH_IMPL (impl, 0) + printf ("\t%s", impl->name); + putchar ('\n'); + + for (i = 1; i < 8; ++i) + { + /* Test n == 0. */ + do_test (i, i, 0, 0, 23); + do_test (i, i, 0, 0, 0); + + do_test (0, 16 << i, 2048, 2048, 23); + do_test (i, 64, 256, 256, 23); + do_test (0, 16 << i, 2048, 2048, 0); + do_test (i, 64, 256, 256, 0); + + /* Check for large input sizes and for these cases we need to + make sure the byte is within the size range (that's why + 7 << i must be smaller than 2048). */ + do_test (0, 7 << i, 2048, SIZE_MAX, 23); + do_test (0, 2048 - i, 2048, SIZE_MAX, 23); + do_test (i, 64, 256, SIZE_MAX, 23); + do_test (0, 7 << i, 2048, SIZE_MAX, 0); + do_test (0, 2048 - i, 2048, SIZE_MAX, 0); + do_test (i, 64, 256, SIZE_MAX, 0); + } + + for (i = 1; i < 64; ++i) + { + for (j = 1; j < 64; j++) + { + do_test (0, 64 - j, 64, SIZE_MAX, 23); + do_test (i, 64 - j, 64, SIZE_MAX, 23); + } + } + + for (i = 1; i < 32; ++i) + { + do_test (0, i, i + 1, i + 1, 23); + do_test (0, i, i + 1, i + 1, 0); + } + + /* BZ#21182 - wrong overflow calculation for i686 implementation + with address near end of the page. */ + for (i = 2; i < 16; ++i) + /* page_size is in fact getpagesize() * 2. */ + do_test (page_size / 2 - i, i, i, 1, 0x9B); + + do_random_tests (); + return ret; +} + +#include <support/test-driver.c> |