diff --git a/ap/libc/glibc/glibc-2.23/string/mempcpy.c b/ap/libc/glibc/glibc-2.23/string/mempcpy.c
new file mode 100644
index 0000000..b39a00c
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/string/mempcpy.c
@@ -0,0 +1,39 @@
+/* Copy memory to memory until the specified number of bytes
+   has been copied, return pointer to following byte.
+   Overlap is NOT handled correctly.
+   Copyright (C) 1991-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Torbjorn Granlund (tege@sics.se).
+
+   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/>.  */
+
+#define NO_MEMPCPY_STPCPY_REDIRECT
+#include <string.h>
+
+#undef mempcpy
+#undef __mempcpy
+
+#ifndef MEMPCPY
+# define MEMPCPY __mempcpy
+#endif
+
+void *
+MEMPCPY (void *dest, const void *src, size_t len)
+{
+  return memcpy (dest, src, len) + len;
+}
+libc_hidden_def (__mempcpy)
+weak_alias (__mempcpy, mempcpy)
+libc_hidden_builtin_def (mempcpy)