string/test-strdup.c

   1 /* Test and measure strdup functions.
   2    Copyright (C) 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 #include <support/check.h>
  20
  21 #ifdef WIDE
  22 # include <wchar.h>
  23 # define CHAR wchar_t
  24 # define sfmt "ls"
  25 # define BIG_CHAR WCHAR_MAX
  26 # define SMALL_CHAR 1273
  27 # define STRCMP wcscmp
  28 # define MEMCMP wmemcmp
  29 # define MEMSET wmemset
  30 # define TCS TEST_COMPARE_STRING_WIDE
  31 #else
  32 # define CHAR char
  33 # define sfmt "s"
  34 # define BIG_CHAR CHAR_MAX
  35 # define SMALL_CHAR 127
  36 # define STRCMP strcmp
  37 # define MEMCMP memcmp
  38 # define MEMSET memset
  39 # define TCS TEST_COMPARE_STRING
  40 #endif
  41
  42 #ifndef STRDUP_RESULT
  43 # define STRDUP_RESULT(dst, len) dst
  44 # define TEST_MAIN
  45 # ifndef WIDE
  46 #  define TEST_NAME "strdup"
  47 # else
  48 #  define TEST_NAME "wcsdup"
  49 # endif
  50 # include "test-string.h"
  51 # ifndef WIDE
  52 #  define STRDUP strdup
  53 # else
  54 #  define STRDUP wcsdup
  55 # endif
  56 #endif
  57
  58 typedef CHAR *(*proto_t) (const CHAR *);
  59
  60 static void
  61 do_zero_len_test (void)
  62 {
  63   CHAR src[1] = { '\0' };
  64   CHAR *dst = STRDUP (src);
  65
  66   TCS (dst, src);
  67   free (dst);
  68 }
  69
  70 static void
  71 do_one_test (const CHAR *src,
  72              size_t len __attribute__((unused)))
  73 {
  74   CHAR *dst = STRDUP (src);
  75
  76   if (STRCMP (dst, src) != 0)
  77     {
  78       error (0, 0,
  79              "Wrong result in function %s dst \"%" sfmt "\" src \"%" sfmt "\"",
  80              TEST_NAME, dst, src);
  81       ret = 1;
  82       free (dst);
  83       return;
  84     }
  85   free (dst);
  86 }
  87
  88 static void
  89 do_test (size_t align1, size_t align2, size_t len, int max_char)
  90 {
  91   size_t i;
  92   CHAR *s1;
  93 /* For wcsdup: align1 and align2 here mean alignment not in bytes,
  94    but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t))
  95    len for wcschr here isn't in bytes but it's number of wchar_t symbols.  */
  96   align1 &= 7;
  97   if ((align1 + len) * sizeof (CHAR) >= page_size)
  98     return;
  99
 100   align2 &= 7;
 101   if ((align2 + len) * sizeof (CHAR) >= page_size)
 102     return;
 103
 104   s1 = (CHAR *) (buf1) + align1;
 105
 106   for (i = 0; i < len; i++)
 107     s1[i] = 32 + 23 * i % (max_char - 32);
 108   s1[len] = 0;
 109
 110   do_one_test (s1, len);
 111 }
 112
 113 static void
 114 do_random_tests (void)
 115 {
 116   size_t i, j, n, align1, align2, len;
 117   CHAR *p1 = (CHAR *)(buf1 + page_size) - 512;
 118   CHAR *res;
 119
 120   for (n = 0; n < ITERATIONS; n++)
 121     {
 122       /* align1 and align2 are expressed as wchar_t and not in bytes for wide
 123      char test, and thus it will be equal to align times wchar_t size.
 124
 125      For non wide version we need to check all alignments from 0 to 63
 126      since some assembly implementations have separate prolog for alignments
 127      more 48.  */
 128
 129       align1 = random () & (63 / sizeof (CHAR));
 130       if (random () & 1)
 131         align2 = random () & (63 / sizeof (CHAR));
 132       else
 133         align2 = align1 + (random () & 24);
 134       len = random () & 511;
 135       j = align1;
 136       if (align2 > j)
 137         j = align2;
 138       if (len + j >= 511)
 139         len = 510 - j - (random () & 7);
 140       j = len + align1 + 64;
 141       if (j > 512)
 142         j = 512;
 143       for (i = 0; i < j; i++)
 144         {
 145           if (i == len + align1)
 146             p1[i] = 0;
 147           else
 148             {
 149               p1[i] = random () & BIG_CHAR;
 150               if (i >= align1 && i < len + align1 && !p1[i])
 151                 p1[i] = (random () & SMALL_CHAR) + 3;
 152             }
 153         }
 154
 155       res =  STRDUP(p1 + align1);
 156       TCS (res, (p1 + align1));
 157       free (res);
 158     }
 159 }
 160
 161
 162 int
 163 test_main (void)
 164 {
 165   size_t i;
 166
 167   test_init ();
 168
 169   printf ("%23s", "");
 170   printf ("\t%s", TEST_NAME);
 171   putchar ('\n');
 172
 173   for (i = 0; i < 16; ++i)
 174     {
 175       do_test (0, 0, i, SMALL_CHAR);
 176       do_test (0, 0, i, BIG_CHAR);
 177       do_test (0, i, i, SMALL_CHAR);
 178       do_test (i, 0, i, BIG_CHAR);
 179     }
 180
 181   for (i = 1; i < 8; ++i)
 182     {
 183       do_test (0, 0, 8 << i, SMALL_CHAR);
 184       do_test (8 - i, 2 * i, 8 << i, SMALL_CHAR);
 185     }
 186
 187   for (i = 1; i < 8; ++i)
 188     {
 189       do_test (i, 2 * i, 8 << i, SMALL_CHAR);
 190       do_test (2 * i, i, 8 << i, BIG_CHAR);
 191       do_test (i, i, 8 << i, SMALL_CHAR);
 192       do_test (i, i, 8 << i, BIG_CHAR);
 193     }
 194
 195   do_zero_len_test ();
 196   do_random_tests ();
 197
 198   return ret;
 199 }
 200
 201 #include <support/test-driver.c>