1  /* Test mbrtowc and mbrtoc32 do not share state (bug 23793).
       2     Copyright (C) 2018-2023 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 <locale.h>
      20  #include <uchar.h>
      21  #include <wchar.h>
      22  #include <support/check.h>
      23  
      24  static int
      25  do_test (void)
      26  {
      27    TEST_VERIFY_EXIT (setlocale (LC_ALL, "de_DE.UTF-8") != NULL);
      28    const char buf[] = "\u00ff";
      29    wchar_t wc = 0;
      30    char32_t c32 = 0;
      31    size_t ret = mbrtowc (&wc, buf, 1, NULL);
      32    TEST_COMPARE (ret, (size_t) -2);
      33    ret = mbrtoc32 (&c32, buf, 1, NULL);
      34    TEST_COMPARE (ret, (size_t) -2);
      35    ret = mbrtowc (&wc, buf + 1, 1, NULL);
      36    TEST_COMPARE (ret, 1);
      37    TEST_COMPARE (wc, 0xff);
      38    ret = mbrtoc32 (&c32, buf + 1, 1, NULL);
      39    TEST_COMPARE (ret, 1);
      40    TEST_COMPARE (c32, 0xff);
      41    return 0;
      42  }
      43  
      44  #include <support/test-driver.c>