/* Copyright (C) 1995-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include <stddef.h>

#include <wchar.h>

/* Copy SRC to DEST.  */

wchar_t *

__wcscpy_chk (wchar_t *dest, const wchar_t *src, size_t n)

{

  wint_t c;

  wchar_t *wcp;

  if (__alignof__ (wchar_t) >= sizeof (wchar_t))

    {

      const ptrdiff_t off = dest - src - 1;

      wcp = (wchar_t *) src;

      do

	{

	  if (__glibc_unlikely (n-- == 0))

	    __chk_fail ();

	  c = *wcp++;

	  wcp[off] = c;

	}

      while (c != L'\0');

    }

  else

    {

      wcp = dest;

      do

	{

	  if (__glibc_unlikely (n-- == 0))

	    __chk_fail ();

	  c = *src++;

	  *wcp++ = c;

	}

      while (c != L'\0');

    }

  return dest;

}