1  /* Copyright (C) 1995-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <wchar.h>
      19  
      20  
      21  /* Copy no more than N wide-characters of SRC to DEST.	*/
      22  wchar_t *
      23  __wcpncpy_chk (wchar_t *dest, const wchar_t *src, size_t n, size_t destlen)
      24  {
      25    if (__glibc_unlikely (destlen < n))
      26      __chk_fail ();
      27  
      28    /* This function is not often enough used to justify not using a
      29       tail call.  */
      30    return __wcpncpy (dest, src, n);
      31  }