1  /* bug 24973: Test EUC-KR module
       2     Copyright (C) 2020-2023 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 <errno.h>
      20  #include <iconv.h>
      21  #include <stdio.h>
      22  #include <support/check.h>
      23  
      24  static int
      25  do_test (void)
      26  {
      27    iconv_t cd = iconv_open ("UTF-8//IGNORE", "EUC-KR");
      28    TEST_VERIFY_EXIT (cd != (iconv_t) -1);
      29  
      30    /* 0xfe (->0x7e : row 94) and 0xc9 (->0x49 : row 41) are user-defined
      31       areas, which are not allowed and should be skipped over due to
      32       //IGNORE.  The trailing 0xfe also is an incomplete sequence, which
      33       should be checked first.  */
      34    char input[4] = { '\xc9', '\xa1', '\0', '\xfe' };
      35    char *inptr = input;
      36    size_t insize = sizeof (input);
      37    char output[4];
      38    char *outptr = output;
      39    size_t outsize = sizeof (output);
      40  
      41    /* This used to crash due to buffer overrun.  */
      42    TEST_VERIFY (iconv (cd, &inptr, &insize, &outptr, &outsize) == (size_t) -1);
      43    TEST_VERIFY (errno == EINVAL);
      44    /* The conversion should produce one character, the converted null
      45       character.  */
      46    TEST_VERIFY (sizeof (output) - outsize == 1);
      47  
      48    TEST_VERIFY_EXIT (iconv_close (cd) != -1);
      49  
      50    return 0;
      51  }
      52  
      53  #include <support/test-driver.c>