1/* Copy memory to memory until the specified number of bytes
2 has been copied with error checking. Overlap is handled correctly.
3 Copyright (C) 1991-2022 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <https://www.gnu.org/licenses/>. */
19
20#include <string.h>
21#include <memcopy.h>
22
23#ifndef MEMMOVE_CHK
24# define MEMMOVE_CHK __memmove_chk
25#endif
26
27void *
28MEMMOVE_CHK (void *dest, const void *src, size_t len, size_t destlen)
29{
30 if (__glibc_unlikely (destlen < len))
31 __chk_fail ();
32
33 return memmove (dest, src, len);
34}
35

source code of glibc/debug/memmove_chk.c