iconvdata/bug-iconv10.c

   1 /* bug 17197: check that iconv doesn't emit invalid extra shift character
   2    Copyright (C) 2015-2020 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 <iconv.h>
  20 #include <locale.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <errno.h>
  25
  26 static int
  27 do_test (void)
  28 {
  29   static const char *charsets[] =
  30     { "IBM930", "IBM933", "IBM935", "IBM937", "IBM939" };
  31   static const char *expects[] =
  32     { "\016\x44\x4d\017", "\016\x41\x63\017", "\016\x44\x4d\017",
  33       "\016\x44\x4d\017", "\016\x44\x4d\017" };
  34   int ret = 0;
  35
  36   for (int i = 0; i < sizeof (charsets) / sizeof (*charsets); i++)
  37     {
  38       const char *charset = charsets[i];
  39       iconv_t cd = iconv_open (charset, "UTF-8");
  40       if (cd == (iconv_t) -1)
  41         {
  42           printf ("iconv_open failed (%s)\n", charset);
  43           ret = 1;
  44           continue;
  45         }
  46
  47       char input[] = "\xe2\x88\x9e.";
  48       const char *expect1 = expects[i];
  49       const char expect2[] = "\x4b";
  50       size_t input_len = sizeof (input);
  51       char output[4];
  52       size_t inlen = input_len;
  53       size_t outlen = sizeof (output);
  54       char *inptr = input;
  55       char *outptr = output;
  56       /* First round: expect conversion to stop before ".".  */
  57       size_t r = iconv (cd, &inptr, &inlen, &outptr, &outlen);
  58       if (r != -1
  59           || errno != E2BIG
  60           || inlen != 2
  61           || inptr != input + input_len - 2
  62           || outlen != 0
  63           || memcmp (output, expect1, sizeof (output)) != 0)
  64         {
  65           printf ("wrong first conversion (%s)", charset);
  66           ret = 1;
  67           goto do_close;
  68         }
  69
  70       outlen = sizeof (output);
  71       outptr = output;
  72       r = iconv (cd, &inptr, &inlen, &outptr, &outlen);
  73       if (r != 0
  74           || inlen != 0
  75           || outlen != sizeof (output) - sizeof (expect2)
  76           || memcmp (output, expect2, sizeof (expect2)) != 0)
  77         {
  78           printf ("wrong second conversion (%s)\n", charset);
  79           ret = 1;
  80         }
  81
  82     do_close:
  83       if (iconv_close (cd) != 0)
  84         {
  85           printf ("iconv_close failed (%s)\n", charset);
  86           ret = 1;
  87           continue;
  88         }
  89     }
  90   return ret;
  91 }
  92
  93 #define TEST_FUNCTION do_test ()
  94 #include "../test-skeleton.c"