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
   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 CHAR *SIMPLE_STRCAT (CHAR *, const CHAR *);
  58
  59 IMPL (SIMPLE_STRCAT, 0)
  60 IMPL (STRCAT, 1)
  61
  62 CHAR *
  63 SIMPLE_STRCAT (CHAR *dst, const CHAR *src)
  64 {
  65   CHAR *ret = dst;
  66   while (*dst++ != '\0');
  67   --dst;
  68   while ((*dst++ = *src++) != '\0');
  69   return ret;
  70 }
  71
  72 static void
  73 do_one_test (impl_t *impl, CHAR *dst, const CHAR *src)
  74 {
  75   size_t k = STRLEN (dst);
  76   if (CALL (impl, dst, src) != dst)
  77     {
  78       error (0, 0, "Wrong result in function %s %p %p", impl->name,
  79              CALL (impl, dst, src), dst);
  80       ret = 1;
  81       return;
  82     }
  83
  84   if (STRCMP (dst + k, src) != 0)
  85     {
  86       error (0, 0, "Wrong result in function %s dst \"%" sfmt "\" src \"%" sfmt "\"",
  87              impl->name, dst, src);
  88       ret = 1;
  89       return;
  90     }
  91 }
  92
  93 static void
  94 do_test (size_t align1, size_t align2, size_t len1, size_t len2, int max_char)
  95 {
  96   size_t i;
  97   CHAR *s1, *s2;
  98
  99   align1 &= 7;
 100   if ((align1 + len1) * sizeof (CHAR) >= page_size)
 101     return;
 102
 103   align2 &= 7;
 104   if ((align2 + len1 + len2) * sizeof (CHAR) >= page_size)
 105     return;
 106
 107   s1 = (CHAR *) (buf1) + align1;
 108   s2 = (CHAR *) (buf2) + align2;
 109
 110   for (i = 0; i < len1; ++i)
 111     s1[i] = 32 + 23 * i % (max_char - 32);
 112   s1[len1] = '\0';
 113
 114   for (i = 0; i < len2; i++)
 115     s2[i] = 32 + 23 * i % (max_char - 32);
 116
 117   FOR_EACH_IMPL (impl, 0)
 118     {
 119       s2[len2] = '\0';
 120       do_one_test (impl, s2, s1);
 121     }
 122 }
 123
 124 static void
 125 do_random_tests (void)
 126 {
 127   size_t i, j, n, align1, align2, len1, len2;
 128   UCHAR *p1 = (UCHAR *) (buf1 + page_size) - 512;
 129   UCHAR *p2 = (UCHAR *) (buf2 + page_size) - 512;
 130   UCHAR *p3 = (UCHAR *) buf1;
 131   UCHAR *res;
 132
 133   for (n = 0; n < ITERATIONS; n++)
 134     {
 135       align1 = random () & 31;
 136       if (random () & 1)
 137         align2 = random () & 31;
 138       else
 139         align2 = align1 + (random () & 24);
 140       len1 = random () & 511;
 141       if (len1 + align2 > 512)
 142         len2 = random () & 7;
 143       else
 144         len2 = (512 - len1 - align2) * (random () & (1024 * 1024 - 1))
 145                / (1024 * 1024);
 146       j = align1;
 147       if (align2 + len2 > j)
 148         j = align2 + len2;
 149       if (len1 + j >= 511)
 150         len1 = 510 - j - (random () & 7);
 151       if (len1 >= 512)
 152         len1 = 0;
 153       if (align1 + len1 < 512 - 8)
 154         {
 155           j = 510 - align1 - len1 - (random () & 31);
 156           if (j > 0 && j < 512)
 157             align1 += j;
 158         }
 159       j = len1 + align1 + 64;
 160       if (j > 512)
 161         j = 512;
 162       for (i = 0; i < j; i++)
 163         {
 164           if (i == len1 + align1)
 165             p1[i] = 0;
 166           else
 167             {
 168               p1[i] = random () & BIG_CHAR;
 169               if (i >= align1 && i < len1 + align1 && !p1[i])
 170                 p1[i] = (random () & SMALL_CHAR) + 3;
 171             }
 172         }
 173       for (i = 0; i < len2; i++)
 174         {
 175           p3[i] = random () & BIG_CHAR;
 176           if (!p3[i])
 177             p3[i] = (random () & SMALL_CHAR) + 3;
 178         }
 179       p3[len2] = 0;
 180
 181       FOR_EACH_IMPL (impl, 1)
 182         {
 183           MEMSET (p2 - 64, '\1', align2 + 64);
 184           MEMSET (p2 + align2 + len2 + 1, '\1', 512 - align2 - len2 - 1);
 185           MEMCPY (p2 + align2, p3, len2 + 1);
 186           res = (UCHAR *) CALL (impl, (CHAR *) (p2 + align2),
 187                                 (CHAR *) (p1 + align1));
 188           if (res != p2 + align2)
 189             {
 190               error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd %zd) %p != %p",
 191                      n, impl->name, align1, align2, len1, len2, res,
 192                      p2 + align2);
 193               ret = 1;
 194             }
 195           for (j = 0; j < align2 + 64; ++j)
 196             {
 197               if (p2[j - 64] != '\1')
 198                 {
 199                   error (0, 0, "Iteration %zd - garbage before, %s (%zd, %zd, %zd, %zd)",
 200                          n, impl->name, align1, align2, len1, len2);
 201                   ret = 1;
 202                   break;
 203                 }
 204             }
 205           if (MEMCMP (p2 + align2, p3, len2))
 206             {
 207               error (0, 0, "Iteration %zd - garbage in string before, %s (%zd, %zd, %zd, %zd)",
 208                      n, impl->name, align1, align2, len1, len2);
 209               ret = 1;
 210             }
 211           for (j = align2 + len1 + len2 + 1; j < 512; ++j)
 212             {
 213               if (p2[j] != '\1')
 214                 {
 215                   error (0, 0, "Iteration %zd - garbage after, %s (%zd, %zd, %zd, %zd)",
 216                          n, impl->name, align1, align2, len1, len2);
 217                   ret = 1;
 218                   break;
 219                 }
 220             }
 221           if (MEMCMP (p1 + align1, p2 + align2 + len2, len1 + 1))
 222             {
 223               error (0, 0, "Iteration %zd - different strings, %s (%zd, %zd, %zd, %zd)",
 224                      n, impl->name, align1, align2, len1, len2);
 225               ret = 1;
 226             }
 227         }
 228     }
 229 }
 230
 231 int
 232 test_main (void)
 233 {
 234   size_t i;
 235
 236   test_init ();
 237
 238   printf ("%28s", "");
 239   FOR_EACH_IMPL (impl, 0)
 240     printf ("\t%s", impl->name);
 241   putchar ('\n');
 242
 243   for (i = 0; i < 16; ++i)
 244     {
 245       do_test (0, 0, i, i, SMALL_CHAR);
 246       do_test (0, 0, i, i, BIG_CHAR);
 247       do_test (0, i, i, i, SMALL_CHAR);
 248       do_test (i, 0, i, i, BIG_CHAR);
 249     }
 250
 251   for (i = 1; i < 8; ++i)
 252     {
 253       do_test (0, 0, 8 << i, 8 << i, SMALL_CHAR);
 254       do_test (8 - i, 2 * i, 8 << i, 8 << i, SMALL_CHAR);
 255       do_test (0, 0, 8 << i, 2 << i, SMALL_CHAR);
 256       do_test (8 - i, 2 * i, 8 << i, 2 << i, SMALL_CHAR);
 257     }
 258
 259   for (i = 1; i < 8; ++i)
 260     {
 261       do_test (i, 2 * i, 8 << i, 1, SMALL_CHAR);
 262       do_test (2 * i, i, 8 << i, 1, BIG_CHAR);
 263       do_test (i, i, 8 << i, 10, SMALL_CHAR);
 264       do_test (i, i, 8 << i, 10, BIG_CHAR);
 265     }
 266
 267   do_random_tests ();
 268   return ret;
 269 }
 270
 271 #include <support/test-driver.c>