string/test-strcat.c

   1 /* Test strcat functions.
   2    Copyright (C) 1999-2021 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Written by Jakub Jelinek <jakub@redhat.com>, 1999.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <https://www.gnu.org/licenses/>.  */
  19
  20 #define TEST_MAIN
  21 #ifndef WIDE
  22 # define TEST_NAME "strcat"
  23 #else
  24 # define TEST_NAME "wcscat"
  25 #endif /* WIDE */
  26 #include "test-string.h"
  27
  28 #ifndef WIDE
  29 # define STRCAT strcat
  30 # define CHAR char
  31 # define UCHAR unsigned char
  32 # define sfmt "s"
  33 # define SIMPLE_STRCAT simple_strcat
  34 # define STRLEN strlen
  35 # define STRCMP strcmp
  36 # define MEMSET memset
  37 # define MEMCPY memcpy
  38 # define MEMCMP memcmp
  39 # define BIG_CHAR CHAR_MAX
  40 # define SMALL_CHAR 127
  41 #else
  42 # include <wchar.h>
  43 # define STRCAT wcscat
  44 # define CHAR wchar_t
  45 # define UCHAR wchar_t
  46 # define sfmt "ls"
  47 # define SIMPLE_STRCAT simple_wcscat
  48 # define STRLEN wcslen
  49 # define STRCMP wcscmp
  50 # define MEMSET wmemset
  51 # define MEMCPY wmemcpy
  52 # define MEMCMP wmemcmp
  53 # define BIG_CHAR WCHAR_MAX
  54 # define SMALL_CHAR 1273
  55 #endif /* WIDE */
  56
  57 typedef CHAR *(*proto_t) (CHAR *, const CHAR *);
  58 CHAR *SIMPLE_STRCAT (CHAR *, const CHAR *);
  59
  60 IMPL (SIMPLE_STRCAT, 0)
  61 IMPL (STRCAT, 1)
  62
  63 CHAR *
  64 SIMPLE_STRCAT (CHAR *dst, const CHAR *src)
  65 {
  66   CHAR *ret = dst;
  67   while (*dst++ != '\0');
  68   --dst;
  69   while ((*dst++ = *src++) != '\0');
  70   return ret;
  71 }
  72
  73 static void
  74 do_one_test (impl_t *impl, CHAR *dst, const CHAR *src)
  75 {
  76   size_t k = STRLEN (dst);
  77   if (CALL (impl, dst, src) != dst)
  78     {
  79       error (0, 0, "Wrong result in function %s %p %p", impl->name,
  80              CALL (impl, dst, src), dst);
  81       ret = 1;
  82       return;
  83     }
  84
  85   if (STRCMP (dst + k, src) != 0)
  86     {
  87       error (0, 0, "Wrong result in function %s dst \"%" sfmt "\" src \"%" sfmt "\"",
  88              impl->name, dst, src);
  89       ret = 1;
  90       return;
  91     }
  92 }
  93
  94 static void
  95 do_test (size_t align1, size_t align2, size_t len1, size_t len2, int max_char)
  96 {
  97   size_t i;
  98   CHAR *s1, *s2;
  99
 100   align1 &= 7;
 101   if ((align1 + len1) * sizeof (CHAR) >= page_size)
 102     return;
 103
 104   align2 &= 7;
 105   if ((align2 + len1 + len2) * sizeof (CHAR) >= page_size)
 106     return;
 107
 108   s1 = (CHAR *) (buf1) + align1;
 109   s2 = (CHAR *) (buf2) + align2;
 110
 111   for (i = 0; i < len1; ++i)
 112     s1[i] = 32 + 23 * i % (max_char - 32);
 113   s1[len1] = '\0';
 114
 115   for (i = 0; i < len2; i++)
 116     s2[i] = 32 + 23 * i % (max_char - 32);
 117
 118   FOR_EACH_IMPL (impl, 0)
 119     {
 120       s2[len2] = '\0';
 121       do_one_test (impl, s2, s1);
 122     }
 123 }
 124
 125 static void
 126 do_random_tests (void)
 127 {
 128   size_t i, j, n, align1, align2, len1, len2;
 129   UCHAR *p1 = (UCHAR *) (buf1 + page_size) - 512;
 130   UCHAR *p2 = (UCHAR *) (buf2 + page_size) - 512;
 131   UCHAR *p3 = (UCHAR *) buf1;
 132   UCHAR *res;
 133
 134   for (n = 0; n < ITERATIONS; n++)
 135     {
 136       align1 = random () & 31;
 137       if (random () & 1)
 138         align2 = random () & 31;
 139       else
 140         align2 = align1 + (random () & 24);
 141       len1 = random () & 511;
 142       if (len1 + align2 > 512)
 143         len2 = random () & 7;
 144       else
 145         len2 = (512 - len1 - align2) * (random () & (1024 * 1024 - 1))
 146                / (1024 * 1024);
 147       j = align1;
 148       if (align2 + len2 > j)
 149         j = align2 + len2;
 150       if (len1 + j >= 511)
 151         len1 = 510 - j - (random () & 7);
 152       if (len1 >= 512)
 153         len1 = 0;
 154       if (align1 + len1 < 512 - 8)
 155         {
 156           j = 510 - align1 - len1 - (random () & 31);
 157           if (j > 0 && j < 512)
 158             align1 += j;
 159         }
 160       j = len1 + align1 + 64;
 161       if (j > 512)
 162         j = 512;
 163       for (i = 0; i < j; i++)
 164         {
 165           if (i == len1 + align1)
 166             p1[i] = 0;
 167           else
 168             {
 169               p1[i] = random () & BIG_CHAR;
 170               if (i >= align1 && i < len1 + align1 && !p1[i])
 171                 p1[i] = (random () & SMALL_CHAR) + 3;
 172             }
 173         }
 174       for (i = 0; i < len2; i++)
 175         {
 176           p3[i] = random () & BIG_CHAR;
 177           if (!p3[i])
 178             p3[i] = (random () & SMALL_CHAR) + 3;
 179         }
 180       p3[len2] = 0;
 181
 182       FOR_EACH_IMPL (impl, 1)
 183         {
 184           MEMSET (p2 - 64, '\1', align2 + 64);
 185           MEMSET (p2 + align2 + len2 + 1, '\1', 512 - align2 - len2 - 1);
 186           MEMCPY (p2 + align2, p3, len2 + 1);
 187           res = (UCHAR *) CALL (impl, (CHAR *) (p2 + align2),
 188                                 (CHAR *) (p1 + align1));
 189           if (res != p2 + align2)
 190             {
 191               error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd %zd) %p != %p",
 192                      n, impl->name, align1, align2, len1, len2, res,
 193                      p2 + align2);
 194               ret = 1;
 195             }
 196           for (j = 0; j < align2 + 64; ++j)
 197             {
 198               if (p2[j - 64] != '\1')
 199                 {
 200                   error (0, 0, "Iteration %zd - garbage before, %s (%zd, %zd, %zd, %zd)",
 201                          n, impl->name, align1, align2, len1, len2);
 202                   ret = 1;
 203                   break;
 204                 }
 205             }
 206           if (MEMCMP (p2 + align2, p3, len2))
 207             {
 208               error (0, 0, "Iteration %zd - garbage in string before, %s (%zd, %zd, %zd, %zd)",
 209                      n, impl->name, align1, align2, len1, len2);
 210               ret = 1;
 211             }
 212           for (j = align2 + len1 + len2 + 1; j < 512; ++j)
 213             {
 214               if (p2[j] != '\1')
 215                 {
 216                   error (0, 0, "Iteration %zd - garbage after, %s (%zd, %zd, %zd, %zd)",
 217                          n, impl->name, align1, align2, len1, len2);
 218                   ret = 1;
 219                   break;
 220                 }
 221             }
 222           if (MEMCMP (p1 + align1, p2 + align2 + len2, len1 + 1))
 223             {
 224               error (0, 0, "Iteration %zd - different strings, %s (%zd, %zd, %zd, %zd)",
 225                      n, impl->name, align1, align2, len1, len2);
 226               ret = 1;
 227             }
 228         }
 229     }
 230 }
 231
 232 int
 233 test_main (void)
 234 {
 235   size_t i;
 236
 237   test_init ();
 238
 239   printf ("%28s", "");
 240   FOR_EACH_IMPL (impl, 0)
 241     printf ("\t%s", impl->name);
 242   putchar ('\n');
 243
 244   for (i = 0; i < 16; ++i)
 245     {
 246       do_test (0, 0, i, i, SMALL_CHAR);
 247       do_test (0, 0, i, i, BIG_CHAR);
 248       do_test (0, i, i, i, SMALL_CHAR);
 249       do_test (i, 0, i, i, BIG_CHAR);
 250     }
 251
 252   for (i = 1; i < 8; ++i)
 253     {
 254       do_test (0, 0, 8 << i, 8 << i, SMALL_CHAR);
 255       do_test (8 - i, 2 * i, 8 << i, 8 << i, SMALL_CHAR);
 256       do_test (0, 0, 8 << i, 2 << i, SMALL_CHAR);
 257       do_test (8 - i, 2 * i, 8 << i, 2 << i, SMALL_CHAR);
 258     }
 259
 260   for (i = 1; i < 8; ++i)
 261     {
 262       do_test (i, 2 * i, 8 << i, 1, SMALL_CHAR);
 263       do_test (2 * i, i, 8 << i, 1, BIG_CHAR);
 264       do_test (i, i, 8 << i, 10, SMALL_CHAR);
 265       do_test (i, i, 8 << i, 10, BIG_CHAR);
 266     }
 267
 268   do_random_tests ();
 269   return ret;
 270 }
 271
 272 #include <support/test-driver.c>