string/test-strcat.c

   1 /* Test strcat functions.
   2    Copyright (C) 1999-2023 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #define TEST_MAIN
  20 #ifndef WIDE
  21 # define TEST_NAME "strcat"
  22 #else
  23 # define TEST_NAME "wcscat"
  24 #endif /* WIDE */
  25 #include "test-string.h"
  26
  27 #ifndef WIDE
  28 # define STRCAT strcat
  29 # define CHAR char
  30 # define UCHAR unsigned char
  31 # define sfmt "s"
  32 # define SIMPLE_STRCAT simple_strcat
  33 # define STRLEN strlen
  34 # define STRCMP strcmp
  35 # define MEMSET memset
  36 # define MEMCPY memcpy
  37 # define MEMCMP memcmp
  38 # define BIG_CHAR CHAR_MAX
  39 # define SMALL_CHAR 127
  40 #else
  41 # include <wchar.h>
  42 # define STRCAT wcscat
  43 # define CHAR wchar_t
  44 # define UCHAR wchar_t
  45 # define sfmt "ls"
  46 # define SIMPLE_STRCAT simple_wcscat
  47 # define STRLEN wcslen
  48 # define STRCMP wcscmp
  49 # define MEMSET wmemset
  50 # define MEMCPY wmemcpy
  51 # define MEMCMP wmemcmp
  52 # define BIG_CHAR WCHAR_MAX
  53 # define SMALL_CHAR 1273
  54 #endif /* WIDE */
  55
  56 typedef CHAR *(*proto_t) (CHAR *, const CHAR *);
  57
  58 IMPL (STRCAT, 1)
  59
  60 /* Naive implementation to verify results.  */
  61 CHAR *
  62 SIMPLE_STRCAT (CHAR *dst, const CHAR *src)
  63 {
  64   CHAR *ret = dst;
  65   while (*dst++ != '\0');
  66   --dst;
  67   while ((*dst++ = *src++) != '\0');
  68   return ret;
  69 }
  70
  71 static void
  72 do_one_test (impl_t *impl, CHAR *dst, const CHAR *src)
  73 {
  74   size_t k = STRLEN (dst);
  75   if (CALL (impl, dst, src) != dst)
  76     {
  77       error (0, 0, "Wrong result in function %s %p %p", impl->name,
  78              CALL (impl, dst, src), dst);
  79       ret = 1;
  80       return;
  81     }
  82
  83   if (STRCMP (dst + k, src) != 0)
  84     {
  85       error (0, 0, "Wrong result in function %s dst \"%" sfmt "\" src \"%" sfmt "\"",
  86              impl->name, dst, src);
  87       ret = 1;
  88       return;
  89     }
  90 }
  91
  92 static void
  93 do_test (size_t align1, size_t align2, size_t len1, size_t len2, int max_char)
  94 {
  95   size_t i;
  96   CHAR *s1, *s2;
  97
  98   align1 &= 7;
  99   if ((align1 + len1) * sizeof (CHAR) >= page_size)
 100     return;
 101
 102   align2 &= 7;
 103   if ((align2 + len1 + len2) * sizeof (CHAR) >= page_size)
 104     return;
 105
 106   s1 = (CHAR *) (buf1) + align1;
 107   s2 = (CHAR *) (buf2) + align2;
 108
 109   for (i = 0; i < len1; ++i)
 110     s1[i] = 32 + 23 * i % (max_char - 32);
 111   s1[len1] = '\0';
 112
 113   for (i = 0; i < len2; i++)
 114     s2[i] = 32 + 23 * i % (max_char - 32);
 115
 116   FOR_EACH_IMPL (impl, 0)
 117     {
 118       s2[len2] = '\0';
 119       do_one_test (impl, s2, s1);
 120     }
 121 }
 122
 123 static void
 124 do_random_tests (void)
 125 {
 126   size_t i, j, n, align1, align2, len1, len2;
 127   UCHAR *p1 = (UCHAR *) (buf1 + page_size) - 512;
 128   UCHAR *p2 = (UCHAR *) (buf2 + page_size) - 512;
 129   UCHAR *p3 = (UCHAR *) buf1;
 130   UCHAR *res;
 131
 132   for (n = 0; n < ITERATIONS; n++)
 133     {
 134       align1 = random () & 31;
 135       if (random () & 1)
 136         align2 = random () & 31;
 137       else
 138         align2 = align1 + (random () & 24);
 139       len1 = random () & 511;
 140       if (len1 + align2 > 512)
 141         len2 = random () & 7;
 142       else
 143         len2 = (512 - len1 - align2) * (random () & (1024 * 1024 - 1))
 144                / (1024 * 1024);
 145       j = align1;
 146       if (align2 + len2 > j)
 147         j = align2 + len2;
 148       if (len1 + j >= 511)
 149         len1 = 510 - j - (random () & 7);
 150       if (len1 >= 512)
 151         len1 = 0;
 152       if (align1 + len1 < 512 - 8)
 153         {
 154           j = 510 - align1 - len1 - (random () & 31);
 155           if (j > 0 && j < 512)
 156             align1 += j;
 157         }
 158       j = len1 + align1 + 64;
 159       if (j > 512)
 160         j = 512;
 161       for (i = 0; i < j; i++)
 162         {
 163           if (i == len1 + align1)
 164             p1[i] = 0;
 165           else
 166             {
 167               p1[i] = random () & BIG_CHAR;
 168               if (i >= align1 && i < len1 + align1 && !p1[i])
 169                 p1[i] = (random () & SMALL_CHAR) + 3;
 170             }
 171         }
 172       for (i = 0; i < len2; i++)
 173         {
 174           p3[i] = random () & BIG_CHAR;
 175           if (!p3[i])
 176             p3[i] = (random () & SMALL_CHAR) + 3;
 177         }
 178       p3[len2] = 0;
 179
 180       FOR_EACH_IMPL (impl, 1)
 181         {
 182           MEMSET (p2 - 64, '\1', align2 + 64);
 183           MEMSET (p2 + align2 + len2 + 1, '\1', 512 - align2 - len2 - 1);
 184           MEMCPY (p2 + align2, p3, len2 + 1);
 185           res = (UCHAR *) CALL (impl, (CHAR *) (p2 + align2),
 186                                 (CHAR *) (p1 + align1));
 187           if (res != p2 + align2)
 188             {
 189               error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd %zd) %p != %p",
 190                      n, impl->name, align1, align2, len1, len2, res,
 191                      p2 + align2);
 192               ret = 1;
 193             }
 194           for (j = 0; j < align2 + 64; ++j)
 195             {
 196               if (p2[j - 64] != '\1')
 197                 {
 198                   error (0, 0, "Iteration %zd - garbage before, %s (%zd, %zd, %zd, %zd)",
 199                          n, impl->name, align1, align2, len1, len2);
 200                   ret = 1;
 201                   break;
 202                 }
 203             }
 204           if (MEMCMP (p2 + align2, p3, len2))
 205             {
 206               error (0, 0, "Iteration %zd - garbage in string before, %s (%zd, %zd, %zd, %zd)",
 207                      n, impl->name, align1, align2, len1, len2);
 208               ret = 1;
 209             }
 210           for (j = align2 + len1 + len2 + 1; j < 512; ++j)
 211             {
 212               if (p2[j] != '\1')
 213                 {
 214                   error (0, 0, "Iteration %zd - garbage after, %s (%zd, %zd, %zd, %zd)",
 215                          n, impl->name, align1, align2, len1, len2);
 216                   ret = 1;
 217                   break;
 218                 }
 219             }
 220           if (MEMCMP (p1 + align1, p2 + align2 + len2, len1 + 1))
 221             {
 222               error (0, 0, "Iteration %zd - different strings, %s (%zd, %zd, %zd, %zd)",
 223                      n, impl->name, align1, align2, len1, len2);
 224               ret = 1;
 225             }
 226         }
 227     }
 228 }
 229
 230 int
 231 test_main (void)
 232 {
 233   size_t i;
 234
 235   test_init ();
 236
 237   printf ("%28s", "");
 238   FOR_EACH_IMPL (impl, 0)
 239     printf ("\t%s", impl->name);
 240   putchar ('\n');
 241
 242   for (i = 0; i < 16; ++i)
 243     {
 244       do_test (0, 0, i, i, SMALL_CHAR);
 245       do_test (0, 0, i, i, BIG_CHAR);
 246       do_test (0, i, i, i, SMALL_CHAR);
 247       do_test (i, 0, i, i, BIG_CHAR);
 248     }
 249
 250   for (i = 1; i < 8; ++i)
 251     {
 252       do_test (0, 0, 8 << i, 8 << i, SMALL_CHAR);
 253       do_test (8 - i, 2 * i, 8 << i, 8 << i, SMALL_CHAR);
 254       do_test (0, 0, 8 << i, 2 << i, SMALL_CHAR);
 255       do_test (8 - i, 2 * i, 8 << i, 2 << i, SMALL_CHAR);
 256     }
 257
 258   for (i = 1; i < 8; ++i)
 259     {
 260       do_test (i, 2 * i, 8 << i, 1, SMALL_CHAR);
 261       do_test (2 * i, i, 8 << i, 1, BIG_CHAR);
 262       do_test (i, i, 8 << i, 10, SMALL_CHAR);
 263       do_test (i, i, 8 << i, 10, BIG_CHAR);
 264     }
 265
 266   do_random_tests ();
 267   return ret;
 268 }
 269
 270 #include <support/test-driver.c>