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43 lines
1.2 KiB
C
43 lines
1.2 KiB
C
/* Copyright (C) 1996-2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <wchar.h>
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#define __need_ptrdiff_t
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#include <stddef.h>
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/* Copy SRC to DEST, returning the address of the terminating L'\0' in
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DEST. Check for overflows. */
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wchar_t *
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__wcpcpy_chk (wchar_t *dest, const wchar_t *src, size_t destlen)
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{
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wchar_t *wcp = (wchar_t *) dest - 1;
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wint_t c;
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do
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{
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if (__glibc_unlikely (destlen-- == 0))
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__chk_fail ();
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c = *src++;
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*++wcp = c;
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}
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while (c != L'\0');
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return wcp;
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}
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