1  /* Test iconv behavior on UCS4 conversions with //IGNORE.
       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     <http://www.gnu.org/licenses/>.  */
      18  
      19  /* Derived from BZ #26923 */
      20  #include <errno.h>
      21  #include <iconv.h>
      22  #include <stdio.h>
      23  #include <support/check.h>
      24  
      25  static int
      26  do_test (void)
      27  {
      28    iconv_t cd = iconv_open ("UTF-8//IGNORE", "ISO-10646/UCS4/");
      29    TEST_VERIFY_EXIT (cd != (iconv_t) -1);
      30  
      31    /*
      32     * Convert sequence beginning with an irreversible character into buffer that
      33     * is too small.
      34     */
      35    char input[12] = "\xe1\x80\xa1" "AAAAAAAAA";
      36    char *inptr = input;
      37    size_t insize = sizeof (input);
      38    char output[6];
      39    char *outptr = output;
      40    size_t outsize = sizeof (output);
      41  
      42    TEST_VERIFY (iconv (cd, &inptr, &insize, &outptr, &outsize) == -1);
      43    TEST_VERIFY (errno == E2BIG);
      44  
      45    TEST_VERIFY_EXIT (iconv_close (cd) != -1);
      46  
      47    return 0;
      48  }
      49  
      50  #include <support/test-driver.c>