1  /* Copy memory to memory until the specified number of bytes
       2     has been copied, return pointer to following byte, with error checking.
       3     Overlap is NOT handled correctly.
       4     Copyright (C) 1991-2023 Free Software Foundation, Inc.
       5     This file is part of the GNU C Library.
       6  
       7     The GNU C Library is free software; you can redistribute it and/or
       8     modify it under the terms of the GNU Lesser General Public
       9     License as published by the Free Software Foundation; either
      10     version 2.1 of the License, or (at your option) any later version.
      11  
      12     The GNU C Library is distributed in the hope that it will be useful,
      13     but WITHOUT ANY WARRANTY; without even the implied warranty of
      14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      15     Lesser General Public License for more details.
      16  
      17     You should have received a copy of the GNU Lesser General Public
      18     License along with the GNU C Library; if not, see
      19     <https://www.gnu.org/licenses/>.  */
      20  
      21  #include <string.h>
      22  #include <memcopy.h>
      23  
      24  void *
      25  __mempcpy_chk (void *dstpp, const void *srcpp, size_t len, size_t dstlen)
      26  {
      27    if (__glibc_unlikely (dstlen < len))
      28      __chk_fail ();
      29  
      30    return __mempcpy (dstpp, srcpp, len);
      31  }
      32  libc_hidden_builtin_def (__mempcpy_chk)