[Feature][ZXW-33]merge ZXW 0428 version
Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/string/strndup.c b/ap/libc/glibc/glibc-2.23/string/strndup.c
new file mode 100644
index 0000000..51a1969
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/string/strndup.c
@@ -0,0 +1,56 @@
+/* Copyright (C) 1996-2016 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ 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/>. */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdio.h>
+#include <sys/types.h>
+
+#if defined _LIBC || defined STDC_HEADERS
+# include <stdlib.h>
+# include <string.h>
+#else
+char *malloc ();
+#endif
+
+#undef __strndup
+#undef strndup
+
+#ifndef weak_alias
+# define __strndup strndup
+#endif
+
+char *
+__strndup (const char *s, size_t n)
+{
+ size_t len = __strnlen (s, n);
+ char *new = (char *) malloc (len + 1);
+
+ if (new == NULL)
+ return NULL;
+
+ new[len] = '\0';
+ return (char *) memcpy (new, s, len);
+}
+#ifdef libc_hidden_def
+libc_hidden_def (__strndup)
+#endif
+#ifdef weak_alias
+weak_alias (__strndup, strndup)
+#endif