diff --git a/ap/libc/glibc/glibc-2.23/stdio-common/printf-prs.c b/ap/libc/glibc/glibc-2.23/stdio-common/printf-prs.c
new file mode 100644
index 0000000..b51b567
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/stdio-common/printf-prs.c
@@ -0,0 +1,102 @@
+/* Copyright (C) 1991-2016 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/>.  */
+
+#include <stdio.h>
+#include <printf.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+#include <sys/param.h>
+
+#include "../locale/localeinfo.h"
+
+#ifndef COMPILE_WPRINTF
+# define CHAR_T		char
+# define UCHAR_T	unsigned char
+# define INT_T		int
+# define L_(Str)	Str
+# define ISDIGIT(Ch)	isdigit (Ch)
+# define ISASCII(Ch)	isascii (Ch)
+# define MBRLEN(Cp, L, St) __mbrlen (Cp, L, St)
+
+# define PUT(F, S, N)	_IO_sputn (F, S, N)
+# define PAD(Padchar)							      \
+  if (width > 0)							      \
+    done += _IO_padn (s, Padchar, width)
+#else
+# define vfprintf	vfwprintf
+# define CHAR_T		wchar_t
+# define UCHAR_T	uwchar_t
+# define INT_T		wint_t
+# define L_(Str)	L##Str
+# define ISDIGIT(Ch)	iswdigit (Ch)
+
+# define PUT(F, S, N)	_IO_sputn (F, S, N)
+# define PAD(Padchar)							      \
+  if (width > 0)							      \
+    done += _IO_wpadn (s, Padchar, width)
+#endif
+
+#define DONT_NEED_READ_INT
+#include "printf-parse.h"
+
+
+size_t
+parse_printf_format (const char *fmt, size_t n, int *argtypes)
+{
+  size_t nargs;			/* Number of arguments.  */
+  size_t max_ref_arg;		/* Highest index used in a positional arg.  */
+  struct printf_spec spec;
+  const unsigned char *f = (const unsigned char *) fmt;
+
+  nargs = 0;
+  max_ref_arg = 0;
+
+  /* Search for format specifications.  */
+  for (f = __find_specmb (f); *f != '\0'; f = spec.next_fmt)
+    {
+      /* Parse this spec.  */
+      nargs += __parse_one_specmb (f, nargs, &spec, &max_ref_arg);
+
+      /* If the width is determined by an argument this is an int.  */
+      if (spec.width_arg != -1 && (size_t) spec.width_arg < n)
+	argtypes[spec.width_arg] = PA_INT;
+
+      /* If the precision is determined by an argument this is an int.  */
+      if (spec.prec_arg != -1 && (size_t) spec.prec_arg < n)
+	argtypes[spec.prec_arg] = PA_INT;
+
+      if ((size_t) spec.data_arg < n)
+	switch (spec.ndata_args)
+	  {
+	  case 0:		/* No arguments.  */
+	    break;
+	  case 1:		/* One argument; we already have the type.  */
+	    argtypes[spec.data_arg] = spec.data_arg_type;
+	    break;
+	  default:
+	    /* We have more than one argument for this format spec.  We must
+               call the arginfo function again to determine all the types.  */
+	    (void) (*__printf_arginfo_table[spec.info.spec])
+	      (&spec.info, n - spec.data_arg, &argtypes[spec.data_arg],
+	       &spec.size);
+	    break;
+	  }
+    }
+
+  return MAX (nargs, max_ref_arg);
+}