| /* Test strncpy functions. |
| Copyright (C) 1999-2018 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/>. */ |
| |
| #ifdef WIDE |
| # include <wchar.h> |
| # define CHAR wchar_t |
| # define UCHAR wchar_t |
| # define BIG_CHAR WCHAR_MAX |
| # define SMALL_CHAR 1273 |
| # define MEMCMP wmemcmp |
| # define MEMSET wmemset |
| # define STRNLEN wcsnlen |
| #else |
| # define CHAR char |
| # define UCHAR unsigned char |
| # define BIG_CHAR CHAR_MAX |
| # define SMALL_CHAR 127 |
| # define MEMCMP memcmp |
| # define MEMSET memset |
| # define STRNLEN strnlen |
| #endif /* !WIDE */ |
| |
| |
| #ifndef STRNCPY_RESULT |
| # define STRNCPY_RESULT(dst, len, n) dst |
| # define TEST_MAIN |
| # ifndef WIDE |
| # define TEST_NAME "strncpy" |
| # else |
| # define TEST_NAME "wcsncpy" |
| # endif /* WIDE */ |
| # include "test-string.h" |
| # ifndef WIDE |
| # define SIMPLE_STRNCPY simple_strncpy |
| # define STUPID_STRNCPY stupid_strncpy |
| # define STRNCPY strncpy |
| # else |
| # define SIMPLE_STRNCPY simple_wcsncpy |
| # define STUPID_STRNCPY stupid_wcsncpy |
| # define STRNCPY wcsncpy |
| # endif /* WIDE */ |
| |
| CHAR *SIMPLE_STRNCPY (CHAR *, const CHAR *, size_t); |
| CHAR *STUPID_STRNCPY (CHAR *, const CHAR *, size_t); |
| |
| IMPL (STUPID_STRNCPY, 0) |
| IMPL (SIMPLE_STRNCPY, 0) |
| IMPL (STRNCPY, 1) |
| |
| CHAR * |
| SIMPLE_STRNCPY (CHAR *dst, const CHAR *src, size_t n) |
| { |
| CHAR *ret = dst; |
| while (n--) |
| if ((*dst++ = *src++) == '\0') |
| { |
| while (n--) |
| *dst++ = '\0'; |
| return ret; |
| } |
| return ret; |
| } |
| |
| CHAR * |
| STUPID_STRNCPY (CHAR *dst, const CHAR *src, size_t n) |
| { |
| size_t nc = STRNLEN (src, n); |
| size_t i; |
| |
| for (i = 0; i < nc; ++i) |
| dst[i] = src[i]; |
| for (; i < n; ++i) |
| dst[i] = '\0'; |
| return dst; |
| } |
| #endif /* !STRNCPY_RESULT */ |
| |
| typedef CHAR *(*proto_t) (CHAR *, const CHAR *, size_t); |
| |
| static void |
| do_one_test (impl_t *impl, CHAR *dst, const CHAR *src, size_t len, size_t n) |
| { |
| if (CALL (impl, dst, src, n) != STRNCPY_RESULT (dst, len, n)) |
| { |
| error (0, 0, "Wrong result in function %s %p %p", impl->name, |
| CALL (impl, dst, src, n), dst); |
| ret = 1; |
| return; |
| } |
| |
| if (memcmp (dst, src, (len > n ? n : len) * sizeof (CHAR)) != 0) |
| { |
| error (0, 0, "Wrong result in function %s", impl->name); |
| ret = 1; |
| return; |
| } |
| |
| if (n > len) |
| { |
| size_t i; |
| |
| for (i = len; i < n; ++i) |
| if (dst [i] != '\0') |
| { |
| error (0, 0, "Wrong result in function %s", impl->name); |
| ret = 1; |
| return; |
| } |
| } |
| } |
| |
| static void |
| do_test (size_t align1, size_t align2, size_t len, size_t n, int max_char) |
| { |
| size_t i; |
| CHAR *s1, *s2; |
| |
| /* For wcsncpy: align1 and align2 here mean alignment not in bytes, |
| but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t)). */ |
| align1 &= 7; |
| if ((align1 + len) * sizeof (CHAR) >= page_size) |
| return; |
| |
| align2 &= 7; |
| if ((align2 + len) * sizeof (CHAR) >= page_size) |
| return; |
| |
| s1 = (CHAR *) (buf1) + align1; |
| s2 = (CHAR *) (buf2) + align2; |
| |
| for (i = 0; i < len; ++i) |
| s1[i] = 32 + 23 * i % (max_char - 32); |
| s1[len] = 0; |
| for (i = len + 1; (i + align1) * sizeof (CHAR) < page_size && i < len + 64; |
| ++i) |
| s1[i] = 32 + 32 * i % (max_char - 32); |
| |
| FOR_EACH_IMPL (impl, 0) |
| do_one_test (impl, s2, s1, len, n); |
| } |
| |
| static void |
| do_random_tests (void) |
| { |
| size_t i, j, n, align1, align2, len, size, mode; |
| UCHAR *p1 = (UCHAR *) (buf1 + page_size) - 512; |
| UCHAR *p2 = (UCHAR *) (buf2 + page_size) - 512; |
| UCHAR *res; |
| |
| for (n = 0; n < ITERATIONS; n++) |
| { |
| /* For wcsncpy: align1 and align2 here mean align not in bytes, |
| but in wchar_ts, in bytes it will equal to align * (sizeof |
| (wchar_t)). */ |
| |
| mode = random (); |
| if (mode & 1) |
| { |
| size = random () & 255; |
| align1 = 512 - size - (random () & 15); |
| if (mode & 2) |
| align2 = align1 - (random () & 24); |
| else |
| align2 = align1 - (random () & 31); |
| if (mode & 4) |
| { |
| j = align1; |
| align1 = align2; |
| align2 = j; |
| } |
| if (mode & 8) |
| len = size - (random () & 31); |
| else |
| len = 512; |
| if (len >= 512) |
| len = random () & 511; |
| } |
| else |
| { |
| align1 = random () & 31; |
| if (mode & 2) |
| align2 = random () & 31; |
| else |
| align2 = align1 + (random () & 24); |
| len = random () & 511; |
| j = align1; |
| if (align2 > j) |
| j = align2; |
| if (mode & 4) |
| { |
| size = random () & 511; |
| if (size + j > 512) |
| size = 512 - j - (random () & 31); |
| } |
| else |
| size = 512 - j; |
| if ((mode & 8) && len + j >= 512) |
| len = 512 - j - (random () & 7); |
| } |
| j = len + align1 + 64; |
| if (j > 512) |
| j = 512; |
| for (i = 0; i < j; i++) |
| { |
| if (i == len + align1) |
| p1[i] = 0; |
| else |
| { |
| p1[i] = random () & BIG_CHAR; |
| if (i >= align1 && i < len + align1 && !p1[i]) |
| p1[i] = (random () & SMALL_CHAR) + 3; |
| } |
| } |
| |
| FOR_EACH_IMPL (impl, 1) |
| { |
| MEMSET (p2 - 64, '\1', 512 + 64); |
| res = (UCHAR *) CALL (impl, (CHAR *) (p2 + align2), |
| (CHAR *) (p1 + align1), size); |
| if (res != STRNCPY_RESULT (p2 + align2, len, size)) |
| { |
| error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd) %p != %p", |
| n, impl->name, align1, align2, len, res, |
| STRNCPY_RESULT (p2 + align2, len, size)); |
| ret = 1; |
| } |
| for (j = 0; j < align2 + 64; ++j) |
| { |
| if (p2[j - 64] != '\1') |
| { |
| error (0, 0, "Iteration %zd - garbage before, %s (%zd, %zd, %zd)", |
| n, impl->name, align1, align2, len); |
| ret = 1; |
| break; |
| } |
| } |
| j = align2 + len + 1; |
| if (size + align2 > j) |
| j = size + align2; |
| for (; j < 512; ++j) |
| { |
| if (p2[j] != '\1') |
| { |
| error (0, 0, "Iteration %zd - garbage after, %s (%zd, %zd, %zd)", |
| n, impl->name, align1, align2, len); |
| ret = 1; |
| break; |
| } |
| } |
| for (j = align2 + len + 1; j < align2 + size; ++j) |
| if (p2[j]) |
| { |
| error (0, 0, "Iteration %zd - garbage after size, %s (%zd, %zd, %zd)", |
| n, impl->name, align1, align2, len); |
| ret = 1; |
| break; |
| } |
| j = len + 1; |
| if (size < j) |
| j = size; |
| if (MEMCMP (p1 + align1, p2 + align2, j)) |
| { |
| error (0, 0, "Iteration %zd - different strings, %s (%zd, %zd, %zd)", |
| n, impl->name, align1, align2, len); |
| ret = 1; |
| } |
| } |
| } |
| } |
| |
| int |
| test_main (void) |
| { |
| size_t i; |
| |
| test_init (); |
| |
| printf ("%28s", ""); |
| FOR_EACH_IMPL (impl, 0) |
| printf ("\t%s", impl->name); |
| putchar ('\n'); |
| |
| for (i = 1; i < 8; ++i) |
| { |
| do_test (i, i, 16, 16, SMALL_CHAR); |
| do_test (i, i, 16, 16, BIG_CHAR); |
| do_test (i, 2 * i, 16, 16, SMALL_CHAR); |
| do_test (2 * i, i, 16, 16, BIG_CHAR); |
| do_test (8 - i, 2 * i, 1 << i, 2 << i, SMALL_CHAR); |
| do_test (2 * i, 8 - i, 2 << i, 1 << i, SMALL_CHAR); |
| do_test (8 - i, 2 * i, 1 << i, 2 << i, BIG_CHAR); |
| do_test (2 * i, 8 - i, 2 << i, 1 << i, BIG_CHAR); |
| } |
| |
| for (i = 1; i < 8; ++i) |
| { |
| do_test (0, 0, 4 << i, 8 << i, SMALL_CHAR); |
| do_test (0, 0, 16 << i, 8 << i, SMALL_CHAR); |
| do_test (8 - i, 2 * i, 4 << i, 8 << i, SMALL_CHAR); |
| do_test (8 - i, 2 * i, 16 << i, 8 << i, SMALL_CHAR); |
| } |
| |
| do_random_tests (); |
| return ret; |
| } |
| |
| #include <support/test-driver.c> |