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diff --git a/include/c++/stl/stl/_ios.h b/include/c++/stl/stl/_ios.h
new file mode 100644
index 0000000..8e6da2d
--- /dev/null
+++ b/include/c++/stl/stl/_ios.h
@@ -0,0 +1,178 @@
+/*
+ * Copyright (c) 1999
+ * Silicon Graphics Computer Systems, Inc.
+ *
+ * Copyright (c) 1999
+ * Boris Fomitchev
+ *
+ * This material is provided "as is", with absolutely no warranty expressed
+ * or implied. Any use is at your own risk.
+ *
+ * Permission to use or copy this software for any purpose is hereby granted
+ * without fee, provided the above notices are retained on all copies.
+ * Permission to modify the code and to distribute modified code is granted,
+ * provided the above notices are retained, and a notice that the code was
+ * modified is included with the above copyright notice.
+ *
+ */
+#ifndef _STLP_INTERNAL_IOS_H
+#define _STLP_INTERNAL_IOS_H
+
+
+#ifndef _STLP_IOS_BASE_H
+# include <stl/_ios_base.h>
+#endif
+
+#ifndef _STLP_INTERNAL_CTYPE_H
+# include <stl/_ctype.h>
+#endif
+#ifndef _STLP_INTERNAL_NUMPUNCT_H
+# include <stl/_numpunct.h>
+#endif
+
+_STLP_BEGIN_NAMESPACE
+
+// ----------------------------------------------------------------------
+
+// Class basic_ios, a subclass of ios_base.  The only important difference
+// between the two is that basic_ios is a class template, parameterized
+// by the character type.  ios_base exists to factor out all of the
+// common properties that don't depend on the character type.
+
+// The second template parameter, _Traits, defaults to char_traits<_CharT>.
+// The default is declared in header <iosfwd>, and it isn't declared here
+// because C++ language rules do not allow it to be declared twice.
+
+template <class _CharT, class _Traits>
+class basic_ios : public ios_base {
+  friend class ios_base;
+public:                         // Synonyms for types.
+  typedef _CharT                     char_type;
+  typedef typename _Traits::int_type int_type;
+  typedef typename _Traits::pos_type pos_type;
+  typedef typename _Traits::off_type off_type;
+  typedef _Traits                    traits_type;
+
+public:                         // Constructor, destructor.
+  explicit basic_ios(basic_streambuf<_CharT, _Traits>* __streambuf);
+  virtual ~basic_ios() {}
+
+public:                         // Members from clause 27.4.4.2
+  basic_ostream<_CharT, _Traits>* tie() const {
+    return _M_tied_ostream;
+  }
+  basic_ostream<_CharT, _Traits>*
+  tie(basic_ostream<char_type, traits_type>* __new_tied_ostream) {
+    basic_ostream<char_type, traits_type>* __tmp = _M_tied_ostream;
+    _M_tied_ostream = __new_tied_ostream;
+    return __tmp;
+  }
+
+  basic_streambuf<_CharT, _Traits>* rdbuf() const
+    { return _M_streambuf; }
+
+  basic_streambuf<_CharT, _Traits>*
+  rdbuf(basic_streambuf<char_type, traits_type>*);
+
+  // Copies __x's state to *this.
+  basic_ios<_CharT, _Traits>& copyfmt(const basic_ios<_CharT, _Traits>& __x);
+
+  char_type fill() const { return _M_fill; }
+  char_type fill(char_type __fill) {
+    char_type __tmp(_M_fill);
+    _M_fill = __fill;
+    return __tmp;
+  }
+
+public:                         // Members from 27.4.4.3.  These four functions
+                                // can almost be defined in ios_base.
+
+  void clear(iostate __state = goodbit) {
+    _M_clear_nothrow(this->rdbuf() ? __state : iostate(__state|ios_base::badbit));
+    _M_check_exception_mask();
+  }
+  void setstate(iostate __state) { this->clear(rdstate() | __state); }
+
+  iostate exceptions() const { return this->_M_get_exception_mask(); }
+  void exceptions(iostate __mask) {
+    this->_M_set_exception_mask(__mask);
+    this->clear(this->rdstate());
+  }
+
+public:                         // Locale-related member functions.
+  locale imbue(const locale&);
+
+  inline char narrow(_CharT, char) const ;
+  inline _CharT widen(char) const;
+
+  // Helper function that makes testing for EOF more convenient.
+  static bool _STLP_CALL _S_eof(int_type __c) {
+    const int_type __eof = _Traits::eof();
+    return _Traits::eq_int_type(__c, __eof);
+  }
+
+protected:
+  basic_ios();
+
+  void init(basic_streambuf<_CharT, _Traits>* __streambuf);
+
+public:
+
+  // Helper function used in istream and ostream.  It is called only from
+  // a catch clause.
+  void _M_handle_exception(ios_base::iostate __flag);
+
+private:                        // Data members
+  char_type _M_fill;            // The fill character, used for padding.
+
+  basic_streambuf<_CharT, _Traits>* _M_streambuf;
+  basic_ostream<_CharT, _Traits>*   _M_tied_ostream;
+
+};
+
+
+template <class _CharT, class _Traits>
+inline char
+basic_ios<_CharT, _Traits>::narrow(_CharT __c, char __default) const
+{ return __STATIC_CAST(const ctype<_CharT>*, this->_M_ctype_facet())->narrow(__c, __default); }
+
+template <class _CharT, class _Traits>
+inline _CharT
+basic_ios<_CharT, _Traits>::widen(char __c) const
+{ return __STATIC_CAST(const ctype<_CharT>*, this->_M_ctype_facet())->widen(__c); }
+
+# if !defined (_STLP_NO_METHOD_SPECIALIZATION)
+_STLP_TEMPLATE_NULL
+inline char
+basic_ios<char, char_traits<char> >::narrow(char __c, char) const
+{
+  return __c;
+}
+
+_STLP_TEMPLATE_NULL
+inline char
+basic_ios<char, char_traits<char> >::widen(char __c) const
+{
+  return __c;
+}
+# endif /* _STLP_NO_METHOD_SPECIALIZATION */
+
+# if defined (_STLP_USE_TEMPLATE_EXPORT)
+_STLP_EXPORT_TEMPLATE_CLASS basic_ios<char, char_traits<char> >;
+#  if ! defined (_STLP_NO_WCHAR_T)
+_STLP_EXPORT_TEMPLATE_CLASS basic_ios<wchar_t, char_traits<wchar_t> >;
+#  endif
+# endif /* _STLP_USE_TEMPLATE_EXPORT */
+
+_STLP_END_NAMESPACE
+
+#if defined (_STLP_EXPOSE_STREAM_IMPLEMENTATION) && !defined (_STLP_LINK_TIME_INSTANTIATION)
+#  include <stl/_ios.c>
+#endif
+
+#endif /* _STLP_IOS */
+
+// Local Variables:
+// mode:C++
+// End:
+