diff --git a/ap/libc/glibc/glibc-2.23/stdio-common/printf-parse.h b/ap/libc/glibc/glibc-2.23/stdio-common/printf-parse.h
new file mode 100644
index 0000000..0f21fed
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/stdio-common/printf-parse.h
@@ -0,0 +1,144 @@
+/* Internal header for parsing printf format strings.
+   Copyright (C) 1995-2016 Free Software Foundation, Inc.
+   This file is part of th 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 <printf.h>
+#include <stdint.h>
+#include <stddef.h>
+#include <string.h>
+#include <wchar.h>
+
+
+struct printf_spec
+  {
+    /* Information parsed from the format spec.  */
+    struct printf_info info;
+
+    /* Pointers into the format string for the end of this format
+       spec and the next (or to the end of the string if no more).  */
+    const UCHAR_T *end_of_fmt, *next_fmt;
+
+    /* Position of arguments for precision and width, or -1 if `info' has
+       the constant value.  */
+    int prec_arg, width_arg;
+
+    int data_arg;		/* Position of data argument.  */
+    int data_arg_type;		/* Type of first argument.  */
+    /* Number of arguments consumed by this format specifier.  */
+    size_t ndata_args;
+    /* Size of the parameter for PA_USER type.  */
+    int size;
+  };
+
+
+/* The various kinds off arguments that can be passed to printf.  */
+union printf_arg
+  {
+    wchar_t pa_wchar;
+    int pa_int;
+    long int pa_long_int;
+    long long int pa_long_long_int;
+    unsigned int pa_u_int;
+    unsigned long int pa_u_long_int;
+    unsigned long long int pa_u_long_long_int;
+    double pa_double;
+    long double pa_long_double;
+    const char *pa_string;
+    const wchar_t *pa_wstring;
+    void *pa_pointer;
+    void *pa_user;
+  };
+
+
+#ifndef DONT_NEED_READ_INT
+/* Read a simple integer from a string and update the string pointer.
+   It is assumed that the first character is a digit.  */
+static int
+read_int (const UCHAR_T * *pstr)
+{
+  int retval = **pstr - L_('0');
+
+  while (ISDIGIT (*++(*pstr)))
+    if (retval >= 0)
+      {
+	if (INT_MAX / 10 < retval)
+	  retval = -1;
+	else
+	  {
+	    int digit = **pstr - L_('0');
+
+	    retval *= 10;
+	    if (INT_MAX - digit < retval)
+	      retval = -1;
+	    else
+	      retval += digit;
+	  }
+      }
+
+  return retval;
+}
+#endif
+
+
+/* These are defined in reg-printf.c.  */
+extern printf_arginfo_size_function **__printf_arginfo_table attribute_hidden;
+extern printf_function **__printf_function_table attribute_hidden;
+extern printf_va_arg_function **__printf_va_arg_table attribute_hidden;
+
+
+/* Find the next spec in FORMAT, or the end of the string.  Returns
+   a pointer into FORMAT, to a '%' or a '\0'.  */
+__extern_always_inline const unsigned char *
+__find_specmb (const unsigned char *format)
+{
+  return (const unsigned char *) __strchrnul ((const char *) format, '%');
+}
+
+__extern_always_inline const unsigned int *
+__find_specwc (const unsigned int *format)
+{
+  return (const unsigned int *) __wcschrnul ((const wchar_t *) format, L'%');
+}
+
+
+/* FORMAT must point to a '%' at the beginning of a spec.  Fills in *SPEC
+   with the parsed details.  POSN is the number of arguments already
+   consumed.  At most MAXTYPES - POSN types are filled in TYPES.  Return
+   the number of args consumed by this spec; *MAX_REF_ARG is updated so it
+   remains the highest argument index used.  */
+extern size_t __parse_one_specmb (const unsigned char *format, size_t posn,
+				  struct printf_spec *spec,
+				  size_t *max_ref_arg) attribute_hidden;
+
+extern size_t __parse_one_specwc (const unsigned int *format, size_t posn,
+				  struct printf_spec *spec,
+				  size_t *max_ref_arg) attribute_hidden;
+
+
+
+/* This variable is defined in reg-modifier.c.  */
+struct printf_modifier_record;
+extern struct printf_modifier_record **__printf_modifier_table
+     attribute_hidden;
+
+/* Handle registered modifiers.  */
+extern int __handle_registered_modifier_mb (const unsigned char **format,
+					    struct printf_info *info)
+     attribute_hidden;
+extern int __handle_registered_modifier_wc (const unsigned int **format,
+					    struct printf_info *info)
+     attribute_hidden;