]> git.ipfire.org Git - thirdparty/gcc.git/blobdiff - libstdc++-v3/include/bits/stl_tree.h
Update copyright years in libstdc++-v3/
[thirdparty/gcc.git] / libstdc++-v3 / include / bits / stl_tree.h
index ecf3b5c3fe4a37aa409e28b2967b1ec2835cb5fb..e41b1340e697d1b5736b7900736304e8c0688b44 100644 (file)
@@ -1,7 +1,6 @@
 // RB tree implementation -*- C++ -*-
 
-// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
-// Free Software Foundation, Inc.
+// Copyright (C) 2001-2014 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
@@ -51,9 +50,9 @@
  *
  */
 
-/** @file stl_tree.h
+/** @file bits/stl_tree.h
  *  This is an internal header file, included by other library headers.
- *  You should not attempt to use it directly.
+ *  Do not attempt to use it directly. @headername{map,set}
  */
 
 #ifndef _STL_TREE_H
 #include <bits/allocator.h>
 #include <bits/stl_function.h>
 #include <bits/cpp_type_traits.h>
+#include <ext/alloc_traits.h>
+#if __cplusplus >= 201103L
+#include <ext/aligned_buffer.h>
+#endif
 
-_GLIBCXX_BEGIN_NAMESPACE(std)
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
 
   // Red-black tree class, designed for use in implementing STL
   // associative containers (set, multiset, map, and multimap). The
@@ -95,28 +100,28 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
     _Base_ptr          _M_right;
 
     static _Base_ptr
-    _S_minimum(_Base_ptr __x)
+    _S_minimum(_Base_ptr __x) _GLIBCXX_NOEXCEPT
     {
       while (__x->_M_left != 0) __x = __x->_M_left;
       return __x;
     }
 
     static _Const_Base_ptr
-    _S_minimum(_Const_Base_ptr __x)
+    _S_minimum(_Const_Base_ptr __x) _GLIBCXX_NOEXCEPT
     {
       while (__x->_M_left != 0) __x = __x->_M_left;
       return __x;
     }
 
     static _Base_ptr
-    _S_maximum(_Base_ptr __x)
+    _S_maximum(_Base_ptr __x) _GLIBCXX_NOEXCEPT
     {
       while (__x->_M_right != 0) __x = __x->_M_right;
       return __x;
     }
 
     static _Const_Base_ptr
-    _S_maximum(_Const_Base_ptr __x)
+    _S_maximum(_Const_Base_ptr __x) _GLIBCXX_NOEXCEPT
     {
       while (__x->_M_right != 0) __x = __x->_M_right;
       return __x;
@@ -127,13 +132,27 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
     struct _Rb_tree_node : public _Rb_tree_node_base
     {
       typedef _Rb_tree_node<_Val>* _Link_type;
+
+#if __cplusplus < 201103L
       _Val _M_value_field;
 
-#ifdef __GXX_EXPERIMENTAL_CXX0X__
-      template<typename... _Args>
-        _Rb_tree_node(_Args&&... __args)
-       : _Rb_tree_node_base(),
-         _M_value_field(std::forward<_Args>(__args)...) { }
+      _Val*
+      _M_valptr()
+      { return std::__addressof(_M_value_field); }
+
+      const _Val*
+      _M_valptr() const
+      { return std::__addressof(_M_value_field); }
+#else
+      __gnu_cxx::__aligned_buffer<_Val> _M_storage;
+
+      _Val*
+      _M_valptr()
+      { return _M_storage._M_ptr(); }
+
+      const _Val*
+      _M_valptr() const
+      { return _M_storage._M_ptr(); }
 #endif
     };
 
@@ -163,30 +182,30 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
       typedef _Rb_tree_node_base::_Base_ptr _Base_ptr;
       typedef _Rb_tree_node<_Tp>*           _Link_type;
 
-      _Rb_tree_iterator()
+      _Rb_tree_iterator() _GLIBCXX_NOEXCEPT
       : _M_node() { }
 
       explicit
-      _Rb_tree_iterator(_Link_type __x)
+      _Rb_tree_iterator(_Link_type __x) _GLIBCXX_NOEXCEPT
       : _M_node(__x) { }
 
       reference
-      operator*() const
-      { return static_cast<_Link_type>(_M_node)->_M_value_field; }
+      operator*() const _GLIBCXX_NOEXCEPT
+      { return *static_cast<_Link_type>(_M_node)->_M_valptr(); }
 
       pointer
-      operator->() const
-      { return &static_cast<_Link_type>(_M_node)->_M_value_field; }
+      operator->() const _GLIBCXX_NOEXCEPT
+      { return static_cast<_Link_type> (_M_node)->_M_valptr(); }
 
       _Self&
-      operator++()
+      operator++() _GLIBCXX_NOEXCEPT
       {
        _M_node = _Rb_tree_increment(_M_node);
        return *this;
       }
 
       _Self
-      operator++(int)
+      operator++(int) _GLIBCXX_NOEXCEPT
       {
        _Self __tmp = *this;
        _M_node = _Rb_tree_increment(_M_node);
@@ -194,14 +213,14 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
       }
 
       _Self&
-      operator--()
+      operator--() _GLIBCXX_NOEXCEPT
       {
        _M_node = _Rb_tree_decrement(_M_node);
        return *this;
       }
 
       _Self
-      operator--(int)
+      operator--(int) _GLIBCXX_NOEXCEPT
       {
        _Self __tmp = *this;
        _M_node = _Rb_tree_decrement(_M_node);
@@ -209,11 +228,11 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
       }
 
       bool
-      operator==(const _Self& __x) const
+      operator==(const _Self& __x) const _GLIBCXX_NOEXCEPT
       { return _M_node == __x._M_node; }
 
       bool
-      operator!=(const _Self& __x) const
+      operator!=(const _Self& __x) const _GLIBCXX_NOEXCEPT
       { return _M_node != __x._M_node; }
 
       _Base_ptr _M_node;
@@ -235,33 +254,38 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
       typedef _Rb_tree_node_base::_Const_Base_ptr _Base_ptr;
       typedef const _Rb_tree_node<_Tp>*           _Link_type;
 
-      _Rb_tree_const_iterator()
+      _Rb_tree_const_iterator() _GLIBCXX_NOEXCEPT
       : _M_node() { }
 
       explicit
-      _Rb_tree_const_iterator(_Link_type __x)
+      _Rb_tree_const_iterator(_Link_type __x) _GLIBCXX_NOEXCEPT
       : _M_node(__x) { }
 
-      _Rb_tree_const_iterator(const iterator& __it)
+      _Rb_tree_const_iterator(const iterator& __it) _GLIBCXX_NOEXCEPT
       : _M_node(__it._M_node) { }
 
+      iterator
+      _M_const_cast() const _GLIBCXX_NOEXCEPT
+      { return iterator(static_cast<typename iterator::_Link_type>
+                       (const_cast<typename iterator::_Base_ptr>(_M_node))); }
+
       reference
-      operator*() const
-      { return static_cast<_Link_type>(_M_node)->_M_value_field; }
+      operator*() const _GLIBCXX_NOEXCEPT
+      { return *static_cast<_Link_type>(_M_node)->_M_valptr(); }
 
       pointer
-      operator->() const
-      { return &static_cast<_Link_type>(_M_node)->_M_value_field; }
+      operator->() const _GLIBCXX_NOEXCEPT
+      { return static_cast<_Link_type>(_M_node)->_M_valptr(); }
 
       _Self&
-      operator++()
+      operator++() _GLIBCXX_NOEXCEPT
       {
        _M_node = _Rb_tree_increment(_M_node);
        return *this;
       }
 
       _Self
-      operator++(int)
+      operator++(int) _GLIBCXX_NOEXCEPT
       {
        _Self __tmp = *this;
        _M_node = _Rb_tree_increment(_M_node);
@@ -269,14 +293,14 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
       }
 
       _Self&
-      operator--()
+      operator--() _GLIBCXX_NOEXCEPT
       {
        _M_node = _Rb_tree_decrement(_M_node);
        return *this;
       }
 
       _Self
-      operator--(int)
+      operator--(int) _GLIBCXX_NOEXCEPT
       {
        _Self __tmp = *this;
        _M_node = _Rb_tree_decrement(_M_node);
@@ -284,11 +308,11 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
       }
 
       bool
-      operator==(const _Self& __x) const
+      operator==(const _Self& __x) const _GLIBCXX_NOEXCEPT
       { return _M_node == __x._M_node; }
 
       bool
-      operator!=(const _Self& __x) const
+      operator!=(const _Self& __x) const _GLIBCXX_NOEXCEPT
       { return _M_node != __x._M_node; }
 
       _Base_ptr _M_node;
@@ -297,13 +321,13 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
   template<typename _Val>
     inline bool
     operator==(const _Rb_tree_iterator<_Val>& __x,
-               const _Rb_tree_const_iterator<_Val>& __y)
+               const _Rb_tree_const_iterator<_Val>& __y) _GLIBCXX_NOEXCEPT
     { return __x._M_node == __y._M_node; }
 
   template<typename _Val>
     inline bool
     operator!=(const _Rb_tree_iterator<_Val>& __x,
-               const _Rb_tree_const_iterator<_Val>& __y)
+               const _Rb_tree_const_iterator<_Val>& __y) _GLIBCXX_NOEXCEPT
     { return __x._M_node != __y._M_node; }
 
   void
@@ -321,54 +345,56 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
            typename _Compare, typename _Alloc = allocator<_Val> >
     class _Rb_tree
     {
-      typedef typename _Alloc::template rebind<_Rb_tree_node<_Val> >::other
-              _Node_allocator;
+      typedef typename __gnu_cxx::__alloc_traits<_Alloc>::template
+        rebind<_Rb_tree_node<_Val> >::other _Node_allocator;
+
+      typedef __gnu_cxx::__alloc_traits<_Node_allocator> _Alloc_traits;
 
     protected:
-      typedef _Rb_tree_node_base* _Base_ptr;
-      typedef const _Rb_tree_node_base* _Const_Base_ptr;
+      typedef _Rb_tree_node_base*              _Base_ptr;
+      typedef const _Rb_tree_node_base*        _Const_Base_ptr;
 
     public:
-      typedef _Key key_type;
-      typedef _Val value_type;
-      typedef value_type* pointer;
-      typedef const value_type* const_pointer;
-      typedef value_type& reference;
-      typedef const value_type& const_reference;
-      typedef _Rb_tree_node<_Val>* _Link_type;
-      typedef const _Rb_tree_node<_Val>* _Const_Link_type;
-      typedef size_t size_type;
-      typedef ptrdiff_t difference_type;
-      typedef _Alloc allocator_type;
+      typedef _Key                             key_type;
+      typedef _Val                             value_type;
+      typedef value_type*                      pointer;
+      typedef const value_type*                const_pointer;
+      typedef value_type&                      reference;
+      typedef const value_type&                const_reference;
+      typedef _Rb_tree_node<_Val>*             _Link_type;
+      typedef const _Rb_tree_node<_Val>*       _Const_Link_type;
+      typedef size_t                           size_type;
+      typedef ptrdiff_t                        difference_type;
+      typedef _Alloc                           allocator_type;
 
       _Node_allocator&
-      _M_get_Node_allocator()
+      _M_get_Node_allocator() _GLIBCXX_NOEXCEPT
       { return *static_cast<_Node_allocator*>(&this->_M_impl); }
       
       const _Node_allocator&
-      _M_get_Node_allocator() const
+      _M_get_Node_allocator() const _GLIBCXX_NOEXCEPT
       { return *static_cast<const _Node_allocator*>(&this->_M_impl); }
 
       allocator_type
-      get_allocator() const
+      get_allocator() const _GLIBCXX_NOEXCEPT
       { return allocator_type(_M_get_Node_allocator()); }
 
     protected:
       _Link_type
       _M_get_node()
-      { return _M_impl._Node_allocator::allocate(1); }
+      { return _Alloc_traits::allocate(_M_get_Node_allocator(), 1); }
 
       void
-      _M_put_node(_Link_type __p)
-      { _M_impl._Node_allocator::deallocate(__p, 1); }
+      _M_put_node(_Link_type __p) _GLIBCXX_NOEXCEPT
+      { _Alloc_traits::deallocate(_M_get_Node_allocator(), __p, 1); }
 
-#ifndef __GXX_EXPERIMENTAL_CXX0X__
+#if __cplusplus < 201103L
       _Link_type
       _M_create_node(const value_type& __x)
       {
        _Link_type __tmp = _M_get_node();
        __try
-         { get_allocator().construct(&__tmp->_M_value_field, __x); }
+         { get_allocator().construct(__tmp->_M_valptr(), __x); }
        __catch(...)
          {
            _M_put_node(__tmp);
@@ -380,7 +406,7 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
       void
       _M_destroy_node(_Link_type __p)
       {
-       get_allocator().destroy(&__p->_M_value_field);
+       get_allocator().destroy(__p->_M_valptr());
        _M_put_node(__p);
       }
 #else
@@ -391,8 +417,10 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
          _Link_type __tmp = _M_get_node();
          __try
            {
-             _M_get_Node_allocator().construct(__tmp,
-                                            std::forward<_Args>(__args)...);
+             ::new(__tmp) _Rb_tree_node<_Val>;
+             _Alloc_traits::construct(_M_get_Node_allocator(),
+                                      __tmp->_M_valptr(),
+                                      std::forward<_Args>(__args)...);
            }
          __catch(...)
            {
@@ -403,9 +431,10 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
        }
 
       void
-      _M_destroy_node(_Link_type __p)
+      _M_destroy_node(_Link_type __p) noexcept
       {
-       _M_get_Node_allocator().destroy(__p);
+       _Alloc_traits::destroy(_M_get_Node_allocator(), __p->_M_valptr());
+       __p->~_Rb_tree_node<_Val>();
        _M_put_node(__p);
       }
 #endif
@@ -413,7 +442,7 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
       _Link_type
       _M_clone_node(_Const_Link_type __x)
       {
-       _Link_type __tmp = _M_create_node(__x->_M_value_field);
+       _Link_type __tmp = _M_create_node(*__x->_M_valptr());
        __tmp->_M_color = __x->_M_color;
        __tmp->_M_left = 0;
        __tmp->_M_right = 0;
@@ -439,6 +468,13 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
            _M_node_count(0)
          { _M_initialize(); }
 
+#if __cplusplus >= 201103L
+         _Rb_tree_impl(const _Key_compare& __comp, _Node_allocator&& __a)
+         : _Node_allocator(std::move(__a)), _M_key_compare(__comp),
+           _M_header(), _M_node_count(0)
+         { _M_initialize(); }
+#endif
+
        private:
          void
          _M_initialize()
@@ -454,94 +490,94 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
 
     protected:
       _Base_ptr&
-      _M_root()
+      _M_root() _GLIBCXX_NOEXCEPT
       { return this->_M_impl._M_header._M_parent; }
 
       _Const_Base_ptr
-      _M_root() const
+      _M_root() const _GLIBCXX_NOEXCEPT
       { return this->_M_impl._M_header._M_parent; }
 
       _Base_ptr&
-      _M_leftmost()
+      _M_leftmost() _GLIBCXX_NOEXCEPT
       { return this->_M_impl._M_header._M_left; }
 
       _Const_Base_ptr
-      _M_leftmost() const
+      _M_leftmost() const _GLIBCXX_NOEXCEPT
       { return this->_M_impl._M_header._M_left; }
 
       _Base_ptr&
-      _M_rightmost()
+      _M_rightmost() _GLIBCXX_NOEXCEPT
       { return this->_M_impl._M_header._M_right; }
 
       _Const_Base_ptr
-      _M_rightmost() const
+      _M_rightmost() const _GLIBCXX_NOEXCEPT
       { return this->_M_impl._M_header._M_right; }
 
       _Link_type
-      _M_begin()
+      _M_begin() _GLIBCXX_NOEXCEPT
       { return static_cast<_Link_type>(this->_M_impl._M_header._M_parent); }
 
       _Const_Link_type
-      _M_begin() const
+      _M_begin() const _GLIBCXX_NOEXCEPT
       {
        return static_cast<_Const_Link_type>
          (this->_M_impl._M_header._M_parent);
       }
 
       _Link_type
-      _M_end()
+      _M_end() _GLIBCXX_NOEXCEPT
       { return static_cast<_Link_type>(&this->_M_impl._M_header); }
 
       _Const_Link_type
-      _M_end() const
+      _M_end() const _GLIBCXX_NOEXCEPT
       { return static_cast<_Const_Link_type>(&this->_M_impl._M_header); }
 
       static const_reference
       _S_value(_Const_Link_type __x)
-      { return __x->_M_value_field; }
+      { return *__x->_M_valptr(); }
 
       static const _Key&
       _S_key(_Const_Link_type __x)
       { return _KeyOfValue()(_S_value(__x)); }
 
       static _Link_type
-      _S_left(_Base_ptr __x)
+      _S_left(_Base_ptr __x) _GLIBCXX_NOEXCEPT
       { return static_cast<_Link_type>(__x->_M_left); }
 
       static _Const_Link_type
-      _S_left(_Const_Base_ptr __x)
+      _S_left(_Const_Base_ptr __x) _GLIBCXX_NOEXCEPT
       { return static_cast<_Const_Link_type>(__x->_M_left); }
 
       static _Link_type
-      _S_right(_Base_ptr __x)
+      _S_right(_Base_ptr __x) _GLIBCXX_NOEXCEPT
       { return static_cast<_Link_type>(__x->_M_right); }
 
       static _Const_Link_type
-      _S_right(_Const_Base_ptr __x)
+      _S_right(_Const_Base_ptr __x) _GLIBCXX_NOEXCEPT
       { return static_cast<_Const_Link_type>(__x->_M_right); }
 
       static const_reference
       _S_value(_Const_Base_ptr __x)
-      { return static_cast<_Const_Link_type>(__x)->_M_value_field; }
+      { return *static_cast<_Const_Link_type>(__x)->_M_valptr(); }
 
       static const _Key&
       _S_key(_Const_Base_ptr __x)
       { return _KeyOfValue()(_S_value(__x)); }
 
       static _Base_ptr
-      _S_minimum(_Base_ptr __x)
+      _S_minimum(_Base_ptr __x) _GLIBCXX_NOEXCEPT
       { return _Rb_tree_node_base::_S_minimum(__x); }
 
       static _Const_Base_ptr
-      _S_minimum(_Const_Base_ptr __x)
+      _S_minimum(_Const_Base_ptr __x) _GLIBCXX_NOEXCEPT
       { return _Rb_tree_node_base::_S_minimum(__x); }
 
       static _Base_ptr
-      _S_maximum(_Base_ptr __x)
+      _S_maximum(_Base_ptr __x) _GLIBCXX_NOEXCEPT
       { return _Rb_tree_node_base::_S_maximum(__x); }
 
       static _Const_Base_ptr
-      _S_maximum(_Const_Base_ptr __x)
+      _S_maximum(_Const_Base_ptr __x) _GLIBCXX_NOEXCEPT
       { return _Rb_tree_node_base::_S_maximum(__x); }
 
     public:
@@ -552,17 +588,54 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
       typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
 
     private:
+      pair<_Base_ptr, _Base_ptr>
+      _M_get_insert_unique_pos(const key_type& __k);
+
+      pair<_Base_ptr, _Base_ptr>
+      _M_get_insert_equal_pos(const key_type& __k);
+
+      pair<_Base_ptr, _Base_ptr>
+      _M_get_insert_hint_unique_pos(const_iterator __pos,
+                                   const key_type& __k);
+
+      pair<_Base_ptr, _Base_ptr>
+      _M_get_insert_hint_equal_pos(const_iterator __pos,
+                                  const key_type& __k);
+
+#if __cplusplus >= 201103L
+      template<typename _Arg>
+        iterator
+        _M_insert_(_Base_ptr __x, _Base_ptr __y, _Arg&& __v);
+
       iterator
-      _M_insert_(_Const_Base_ptr __x, _Const_Base_ptr __y,
+      _M_insert_node(_Base_ptr __x, _Base_ptr __y, _Link_type __z);
+
+      template<typename _Arg>
+        iterator
+        _M_insert_lower(_Base_ptr __y, _Arg&& __v);
+
+      template<typename _Arg>
+        iterator
+        _M_insert_equal_lower(_Arg&& __x);
+
+      iterator
+      _M_insert_lower_node(_Base_ptr __p, _Link_type __z);
+
+      iterator
+      _M_insert_equal_lower_node(_Link_type __z);
+#else
+      iterator
+      _M_insert_(_Base_ptr __x, _Base_ptr __y,
                 const value_type& __v);
 
       // _GLIBCXX_RESOLVE_LIB_DEFECTS
       // 233. Insertion hints in associative containers.
       iterator
-      _M_insert_lower(_Base_ptr __x, _Base_ptr __y, const value_type& __v);
+      _M_insert_lower(_Base_ptr __y, const value_type& __v);
 
       iterator
       _M_insert_equal_lower(const value_type& __x);
+#endif
 
       _Link_type
       _M_copy(_Const_Link_type __x, _Link_type __p);
@@ -592,10 +665,28 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
 
       _Rb_tree(const _Compare& __comp,
               const allocator_type& __a = allocator_type())
-      : _M_impl(__comp, __a) { }
+      : _M_impl(__comp, _Node_allocator(__a)) { }
 
       _Rb_tree(const _Rb_tree& __x)
-      : _M_impl(__x._M_impl._M_key_compare, __x._M_get_Node_allocator())
+      : _M_impl(__x._M_impl._M_key_compare,
+               _Alloc_traits::_S_select_on_copy(__x._M_get_Node_allocator()))
+      {
+       if (__x._M_root() != 0)
+         {
+           _M_root() = _M_copy(__x._M_begin(), _M_end());
+           _M_leftmost() = _S_minimum(_M_root());
+           _M_rightmost() = _S_maximum(_M_root());
+           _M_impl._M_node_count = __x._M_impl._M_node_count;
+         }
+      }
+
+#if __cplusplus >= 201103L
+      _Rb_tree(const allocator_type& __a)
+      : _M_impl(_Compare(), _Node_allocator(__a))
+      { }
+
+      _Rb_tree(const _Rb_tree& __x, const allocator_type& __a)
+      : _M_impl(__x._M_impl._M_key_compare, _Node_allocator(__a))
       {
        if (__x._M_root() != 0)
          {
@@ -606,11 +697,18 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
          }
       }
 
-#ifdef __GXX_EXPERIMENTAL_CXX0X__
-      _Rb_tree(_Rb_tree&& __x);
+      _Rb_tree(_Rb_tree&& __x)
+      : _Rb_tree(std::move(__x), std::move(__x._M_get_Node_allocator()))
+      { }
+
+      _Rb_tree(_Rb_tree&& __x, const allocator_type& __a)
+      : _Rb_tree(std::move(__x), _Node_allocator(__a))
+      { }
+
+      _Rb_tree(_Rb_tree&& __x, _Node_allocator&& __a);
 #endif
 
-      ~_Rb_tree()
+      ~_Rb_tree() _GLIBCXX_NOEXCEPT
       { _M_erase(_M_begin()); }
 
       _Rb_tree&
@@ -622,66 +720,99 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
       { return _M_impl._M_key_compare; }
 
       iterator
-      begin()
+      begin() _GLIBCXX_NOEXCEPT
       { 
        return iterator(static_cast<_Link_type>
                        (this->_M_impl._M_header._M_left));
       }
 
       const_iterator
-      begin() const
+      begin() const _GLIBCXX_NOEXCEPT
       { 
        return const_iterator(static_cast<_Const_Link_type>
                              (this->_M_impl._M_header._M_left));
       }
 
       iterator
-      end()
+      end() _GLIBCXX_NOEXCEPT
       { return iterator(static_cast<_Link_type>(&this->_M_impl._M_header)); }
 
       const_iterator
-      end() const
+      end() const _GLIBCXX_NOEXCEPT
       { 
        return const_iterator(static_cast<_Const_Link_type>
                              (&this->_M_impl._M_header));
       }
 
       reverse_iterator
-      rbegin()
+      rbegin() _GLIBCXX_NOEXCEPT
       { return reverse_iterator(end()); }
 
       const_reverse_iterator
-      rbegin() const
+      rbegin() const _GLIBCXX_NOEXCEPT
       { return const_reverse_iterator(end()); }
 
       reverse_iterator
-      rend()
+      rend() _GLIBCXX_NOEXCEPT
       { return reverse_iterator(begin()); }
 
       const_reverse_iterator
-      rend() const
+      rend() const _GLIBCXX_NOEXCEPT
       { return const_reverse_iterator(begin()); }
 
       bool
-      empty() const
+      empty() const _GLIBCXX_NOEXCEPT
       { return _M_impl._M_node_count == 0; }
 
       size_type
-      size() const
+      size() const _GLIBCXX_NOEXCEPT 
       { return _M_impl._M_node_count; }
 
       size_type
-      max_size() const
-      { return _M_get_Node_allocator().max_size(); }
+      max_size() const _GLIBCXX_NOEXCEPT
+      { return _Alloc_traits::max_size(_M_get_Node_allocator()); }
 
       void
-#ifdef __GXX_EXPERIMENTAL_CXX0X__
-      swap(_Rb_tree&& __t);
+#if __cplusplus >= 201103L
+      swap(_Rb_tree& __t) noexcept(_Alloc_traits::_S_nothrow_swap());
 #else
-      swap(_Rb_tree& __t);      
+      swap(_Rb_tree& __t);
 #endif
 
       // Insert/erase.
+#if __cplusplus >= 201103L
+      template<typename _Arg>
+        pair<iterator, bool>
+        _M_insert_unique(_Arg&& __x);
+
+      template<typename _Arg>
+        iterator
+        _M_insert_equal(_Arg&& __x);
+
+      template<typename _Arg>
+        iterator
+        _M_insert_unique_(const_iterator __position, _Arg&& __x);
+
+      template<typename _Arg>
+        iterator
+        _M_insert_equal_(const_iterator __position, _Arg&& __x);
+
+      template<typename... _Args>
+       pair<iterator, bool>
+       _M_emplace_unique(_Args&&... __args);
+
+      template<typename... _Args>
+       iterator
+       _M_emplace_equal(_Args&&... __args);
+
+      template<typename... _Args>
+       iterator
+       _M_emplace_hint_unique(const_iterator __pos, _Args&&... __args);
+
+      template<typename... _Args>
+       iterator
+       _M_emplace_hint_equal(const_iterator __pos, _Args&&... __args);
+#else
       pair<iterator, bool>
       _M_insert_unique(const value_type& __x);
 
@@ -693,6 +824,7 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
 
       iterator
       _M_insert_equal_(const_iterator __position, const value_type& __x);
+#endif
 
       template<typename _InputIterator>
         void
@@ -702,26 +834,73 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
         void
         _M_insert_equal(_InputIterator __first, _InputIterator __last);
 
+    private:
+      void
+      _M_erase_aux(const_iterator __position);
+
       void
-      erase(iterator __position);
+      _M_erase_aux(const_iterator __first, const_iterator __last);
+
+    public:
+#if __cplusplus >= 201103L
+      // _GLIBCXX_RESOLVE_LIB_DEFECTS
+      // DR 130. Associative erase should return an iterator.
+      _GLIBCXX_ABI_TAG_CXX11
+      iterator
+      erase(const_iterator __position)
+      {
+       const_iterator __result = __position;
+       ++__result;
+       _M_erase_aux(__position);
+       return __result._M_const_cast();
+      }
 
+      // LWG 2059.
+      _GLIBCXX_ABI_TAG_CXX11
+      iterator
+      erase(iterator __position)
+      {
+       iterator __result = __position;
+       ++__result;
+       _M_erase_aux(__position);
+       return __result;
+      }
+#else
       void
-      erase(const_iterator __position);
+      erase(iterator __position)
+      { _M_erase_aux(__position); }
 
+      void
+      erase(const_iterator __position)
+      { _M_erase_aux(__position); }
+#endif
       size_type
       erase(const key_type& __x);
 
+#if __cplusplus >= 201103L
+      // _GLIBCXX_RESOLVE_LIB_DEFECTS
+      // DR 130. Associative erase should return an iterator.
+      _GLIBCXX_ABI_TAG_CXX11
+      iterator
+      erase(const_iterator __first, const_iterator __last)
+      {
+       _M_erase_aux(__first, __last);
+       return __last._M_const_cast();
+      }
+#else
       void
-      erase(iterator __first, iterator __last);
+      erase(iterator __first, iterator __last)
+      { _M_erase_aux(__first, __last); }
 
       void
-      erase(const_iterator __first, const_iterator __last);
-
+      erase(const_iterator __first, const_iterator __last)
+      { _M_erase_aux(__first, __last); }
+#endif
       void
       erase(const key_type* __first, const key_type* __last);
 
       void
-      clear()
+      clear() _GLIBCXX_NOEXCEPT
       {
         _M_erase(_M_begin());
         _M_leftmost() = _M_end();
@@ -765,6 +944,11 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
       // Debugging.
       bool
       __rb_verify() const;
+
+#if __cplusplus >= 201103L
+      bool
+      _M_move_assign(_Rb_tree&);
+#endif
     };
 
   template<typename _Key, typename _Val, typename _KeyOfValue,
@@ -822,27 +1006,71 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
         _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>& __y)
     { __x.swap(__y); }
 
-#ifdef __GXX_EXPERIMENTAL_CXX0X__
+#if __cplusplus >= 201103L
   template<typename _Key, typename _Val, typename _KeyOfValue,
            typename _Compare, typename _Alloc>
     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
-    _Rb_tree(_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>&& __x)
-    : _M_impl(__x._M_impl._M_key_compare, __x._M_get_Node_allocator())
+    _Rb_tree(_Rb_tree&& __x, _Node_allocator&& __a)
+    : _M_impl(__x._M_impl._M_key_compare, std::move(__a))
     {
       if (__x._M_root() != 0)
        {
-         _M_root() = __x._M_root();
-         _M_leftmost() = __x._M_leftmost();
-         _M_rightmost() = __x._M_rightmost();
-         _M_root()->_M_parent = _M_end();
+         if (!_Alloc_traits::_S_always_equal()
+             && __x._M_get_Node_allocator() != __a)
+           {
+             _M_root() = _M_copy(__x._M_begin(), _M_end());
+             _M_leftmost() = _S_minimum(_M_root());
+             _M_rightmost() = _S_maximum(_M_root());
+             _M_impl._M_node_count = __x._M_impl._M_node_count;
+           }
+         else
+           {
+             _M_root() = __x._M_root();
+             _M_leftmost() = __x._M_leftmost();
+             _M_rightmost() = __x._M_rightmost();
+             _M_root()->_M_parent = _M_end();
+
+             __x._M_root() = 0;
+             __x._M_leftmost() = __x._M_end();
+             __x._M_rightmost() = __x._M_end();
+
+             this->_M_impl._M_node_count = __x._M_impl._M_node_count;
+             __x._M_impl._M_node_count = 0;
+           }
+       }
+    }
+
+  template<typename _Key, typename _Val, typename _KeyOfValue,
+           typename _Compare, typename _Alloc>
+    bool
+    _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
+    _M_move_assign(_Rb_tree& __x)
+    {
+      if (_Alloc_traits::_S_propagate_on_move_assign()
+         || _Alloc_traits::_S_always_equal()
+         || _M_get_Node_allocator() == __x._M_get_Node_allocator())
+       {
+         clear();
+         if (__x._M_root() != 0)
+           {
+             _M_root() = __x._M_root();
+             _M_leftmost() = __x._M_leftmost();
+             _M_rightmost() = __x._M_rightmost();
+             _M_root()->_M_parent = _M_end();
 
-         __x._M_root() = 0;
-         __x._M_leftmost() = __x._M_end();
-         __x._M_rightmost() = __x._M_end();
+             __x._M_root() = 0;
+             __x._M_leftmost() = __x._M_end();
+             __x._M_rightmost() = __x._M_end();
 
-         this->_M_impl._M_node_count = __x._M_impl._M_node_count;
-         __x._M_impl._M_node_count = 0;
+             this->_M_impl._M_node_count = __x._M_impl._M_node_count;
+             __x._M_impl._M_node_count = 0;
+           }
+         if (_Alloc_traits::_S_propagate_on_move_assign())
+           std::__alloc_on_move(_M_get_Node_allocator(),
+                                __x._M_get_Node_allocator());
+         return true;
        }
+      return false;
     }
 #endif
 
@@ -850,12 +1078,24 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
            typename _Compare, typename _Alloc>
     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>&
     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
-    operator=(const _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>& __x)
+    operator=(const _Rb_tree& __x)
     {
       if (this != &__x)
        {
          // Note that _Key may be a constant type.
          clear();
+#if __cplusplus >= 201103L
+         if (_Alloc_traits::_S_propagate_on_copy_assign())
+           {
+             auto& __this_alloc = this->_M_get_Node_allocator();
+             auto& __that_alloc = __x._M_get_Node_allocator();
+             if (!_Alloc_traits::_S_always_equal()
+                 && __this_alloc != __that_alloc)
+               {
+                 std::__alloc_on_copy(__this_alloc, __that_alloc);
+               }
+           }
+#endif
          _M_impl._M_key_compare = __x._M_impl._M_key_compare;
          if (__x._M_root() != 0)
            {
@@ -870,18 +1110,24 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
 
   template<typename _Key, typename _Val, typename _KeyOfValue,
            typename _Compare, typename _Alloc>
+#if __cplusplus >= 201103L
+    template<typename _Arg>
+#endif
     typename _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::iterator
     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
-    _M_insert_(_Const_Base_ptr __x, _Const_Base_ptr __p, const _Val& __v)
+#if __cplusplus >= 201103L
+    _M_insert_(_Base_ptr __x, _Base_ptr __p, _Arg&& __v)
+#else
+    _M_insert_(_Base_ptr __x, _Base_ptr __p, const _Val& __v)
+#endif
     {
       bool __insert_left = (__x != 0 || __p == _M_end()
-                           || _M_impl._M_key_compare(_KeyOfValue()(__v), 
+                           || _M_impl._M_key_compare(_KeyOfValue()(__v),
                                                      _S_key(__p)));
 
-      _Link_type __z = _M_create_node(__v);
+      _Link_type __z = _M_create_node(_GLIBCXX_FORWARD(_Arg, __v));
 
-      _Rb_tree_insert_and_rebalance(__insert_left, __z,
-                                   const_cast<_Base_ptr>(__p),  
+      _Rb_tree_insert_and_rebalance(__insert_left, __z, __p,
                                    this->_M_impl._M_header);
       ++_M_impl._M_node_count;
       return iterator(__z);
@@ -889,17 +1135,24 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
 
   template<typename _Key, typename _Val, typename _KeyOfValue,
            typename _Compare, typename _Alloc>
+#if __cplusplus >= 201103L
+    template<typename _Arg>
+#endif
     typename _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::iterator
     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
-    _M_insert_lower(_Base_ptr __x, _Base_ptr __p, const _Val& __v)
+#if __cplusplus >= 201103L
+    _M_insert_lower(_Base_ptr __p, _Arg&& __v)
+#else
+    _M_insert_lower(_Base_ptr __p, const _Val& __v)
+#endif
     {
-      bool __insert_left = (__x != 0 || __p == _M_end()
+      bool __insert_left = (__p == _M_end()
                            || !_M_impl._M_key_compare(_S_key(__p),
                                                       _KeyOfValue()(__v)));
 
-      _Link_type __z = _M_create_node(__v);
+      _Link_type __z = _M_create_node(_GLIBCXX_FORWARD(_Arg, __v));
 
-      _Rb_tree_insert_and_rebalance(__insert_left, __z, __p,  
+      _Rb_tree_insert_and_rebalance(__insert_left, __z, __p,
                                    this->_M_impl._M_header);
       ++_M_impl._M_node_count;
       return iterator(__z);
@@ -907,9 +1160,16 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
 
   template<typename _Key, typename _Val, typename _KeyOfValue,
            typename _Compare, typename _Alloc>
+#if __cplusplus >= 201103L
+    template<typename _Arg>
+#endif
     typename _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::iterator
     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
+#if __cplusplus >= 201103L
+    _M_insert_equal_lower(_Arg&& __v)
+#else
     _M_insert_equal_lower(const _Val& __v)
+#endif
     {
       _Link_type __x = _M_begin();
       _Link_type __y = _M_end();
@@ -919,7 +1179,7 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
          __x = !_M_impl._M_key_compare(_S_key(__x), _KeyOfValue()(__v)) ?
                _S_left(__x) : _S_right(__x);
        }
-      return _M_insert_lower(__x, __y, __v);
+      return _M_insert_lower(__y, _GLIBCXX_FORWARD(_Arg, __v));
     }
 
   template<typename _Key, typename _Val, typename _KoV,
@@ -1104,10 +1364,9 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
            typename _Compare, typename _Alloc>
     void
     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
-#ifdef __GXX_EXPERIMENTAL_CXX0X__
-    swap(_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>&& __t)
-#else
     swap(_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>& __t)
+#if __cplusplus >= 201103L
+    noexcept(_Alloc_traits::_S_nothrow_swap())
 #endif
     {
       if (_M_root() == 0)
@@ -1147,172 +1406,417 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
       // No need to swap header's color as it does not change.
       std::swap(this->_M_impl._M_node_count, __t._M_impl._M_node_count);
       std::swap(this->_M_impl._M_key_compare, __t._M_impl._M_key_compare);
-      
-      // _GLIBCXX_RESOLVE_LIB_DEFECTS
-      // 431. Swapping containers with unequal allocators.
-      std::__alloc_swap<_Node_allocator>::
-       _S_do_it(_M_get_Node_allocator(), __t._M_get_Node_allocator());
+
+      _Alloc_traits::_S_on_swap(_M_get_Node_allocator(),
+                               __t._M_get_Node_allocator());
     }
 
   template<typename _Key, typename _Val, typename _KeyOfValue,
            typename _Compare, typename _Alloc>
     pair<typename _Rb_tree<_Key, _Val, _KeyOfValue,
-                          _Compare, _Alloc>::iterator, bool>
+                          _Compare, _Alloc>::_Base_ptr,
+        typename _Rb_tree<_Key, _Val, _KeyOfValue,
+                          _Compare, _Alloc>::_Base_ptr>
     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
-    _M_insert_unique(const _Val& __v)
+    _M_get_insert_unique_pos(const key_type& __k)
     {
+      typedef pair<_Base_ptr, _Base_ptr> _Res;
       _Link_type __x = _M_begin();
       _Link_type __y = _M_end();
       bool __comp = true;
       while (__x != 0)
        {
          __y = __x;
-         __comp = _M_impl._M_key_compare(_KeyOfValue()(__v), _S_key(__x));
+         __comp = _M_impl._M_key_compare(__k, _S_key(__x));
          __x = __comp ? _S_left(__x) : _S_right(__x);
        }
       iterator __j = iterator(__y);
       if (__comp)
        {
          if (__j == begin())
-           return pair<iterator, bool>(_M_insert_(__x, __y, __v), true);
+           return _Res(__x, __y);
          else
            --__j;
        }
-      if (_M_impl._M_key_compare(_S_key(__j._M_node), _KeyOfValue()(__v)))
-       return pair<iterator, bool>(_M_insert_(__x, __y, __v), true);
-      return pair<iterator, bool>(__j, false);
+      if (_M_impl._M_key_compare(_S_key(__j._M_node), __k))
+       return _Res(__x, __y);
+      return _Res(__j._M_node, 0);
     }
 
   template<typename _Key, typename _Val, typename _KeyOfValue,
            typename _Compare, typename _Alloc>
-    typename _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::iterator
+    pair<typename _Rb_tree<_Key, _Val, _KeyOfValue,
+                          _Compare, _Alloc>::_Base_ptr,
+        typename _Rb_tree<_Key, _Val, _KeyOfValue,
+                          _Compare, _Alloc>::_Base_ptr>
     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
-    _M_insert_equal(const _Val& __v)
+    _M_get_insert_equal_pos(const key_type& __k)
     {
+      typedef pair<_Base_ptr, _Base_ptr> _Res;
       _Link_type __x = _M_begin();
       _Link_type __y = _M_end();
       while (__x != 0)
        {
          __y = __x;
-         __x = _M_impl._M_key_compare(_KeyOfValue()(__v), _S_key(__x)) ?
+         __x = _M_impl._M_key_compare(__k, _S_key(__x)) ?
                _S_left(__x) : _S_right(__x);
        }
-      return _M_insert_(__x, __y, __v);
+      return _Res(__x, __y);
+    }
+
+  template<typename _Key, typename _Val, typename _KeyOfValue,
+           typename _Compare, typename _Alloc>
+#if __cplusplus >= 201103L
+    template<typename _Arg>
+#endif
+    pair<typename _Rb_tree<_Key, _Val, _KeyOfValue,
+                          _Compare, _Alloc>::iterator, bool>
+    _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
+#if __cplusplus >= 201103L
+    _M_insert_unique(_Arg&& __v)
+#else
+    _M_insert_unique(const _Val& __v)
+#endif
+    {
+      typedef pair<iterator, bool> _Res;
+      pair<_Base_ptr, _Base_ptr> __res
+       = _M_get_insert_unique_pos(_KeyOfValue()(__v));
+
+      if (__res.second)
+       return _Res(_M_insert_(__res.first, __res.second,
+                              _GLIBCXX_FORWARD(_Arg, __v)),
+                   true);
+
+      return _Res(iterator(static_cast<_Link_type>(__res.first)), false);
     }
 
   template<typename _Key, typename _Val, typename _KeyOfValue,
            typename _Compare, typename _Alloc>
+#if __cplusplus >= 201103L
+    template<typename _Arg>
+#endif
     typename _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::iterator
     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
-    _M_insert_unique_(const_iterator __position, const _Val& __v)
+#if __cplusplus >= 201103L
+    _M_insert_equal(_Arg&& __v)
+#else
+    _M_insert_equal(const _Val& __v)
+#endif
     {
+      pair<_Base_ptr, _Base_ptr> __res
+       = _M_get_insert_equal_pos(_KeyOfValue()(__v));
+      return _M_insert_(__res.first, __res.second, _GLIBCXX_FORWARD(_Arg, __v));
+    }
+
+  template<typename _Key, typename _Val, typename _KeyOfValue,
+           typename _Compare, typename _Alloc>
+    pair<typename _Rb_tree<_Key, _Val, _KeyOfValue,
+                          _Compare, _Alloc>::_Base_ptr,
+         typename _Rb_tree<_Key, _Val, _KeyOfValue,
+                          _Compare, _Alloc>::_Base_ptr>
+    _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
+    _M_get_insert_hint_unique_pos(const_iterator __position,
+                                 const key_type& __k)
+    {
+      iterator __pos = __position._M_const_cast();
+      typedef pair<_Base_ptr, _Base_ptr> _Res;
+
       // end()
-      if (__position._M_node == _M_end())
+      if (__pos._M_node == _M_end())
        {
          if (size() > 0
-             && _M_impl._M_key_compare(_S_key(_M_rightmost()), 
-                                       _KeyOfValue()(__v)))
-           return _M_insert_(0, _M_rightmost(), __v);
+             && _M_impl._M_key_compare(_S_key(_M_rightmost()), __k))
+           return _Res(0, _M_rightmost());
          else
-           return _M_insert_unique(__v).first;
+           return _M_get_insert_unique_pos(__k);
        }
-      else if (_M_impl._M_key_compare(_KeyOfValue()(__v),
-                                     _S_key(__position._M_node)))
+      else if (_M_impl._M_key_compare(__k, _S_key(__pos._M_node)))
        {
          // First, try before...
-         const_iterator __before = __position;
-         if (__position._M_node == _M_leftmost()) // begin()
-           return _M_insert_(_M_leftmost(), _M_leftmost(), __v);
-         else if (_M_impl._M_key_compare(_S_key((--__before)._M_node), 
-                                         _KeyOfValue()(__v)))
+         iterator __before = __pos;
+         if (__pos._M_node == _M_leftmost()) // begin()
+           return _Res(_M_leftmost(), _M_leftmost());
+         else if (_M_impl._M_key_compare(_S_key((--__before)._M_node), __k))
            {
              if (_S_right(__before._M_node) == 0)
-               return _M_insert_(0, __before._M_node, __v);
+               return _Res(0, __before._M_node);
              else
-               return _M_insert_(__position._M_node,
-                                 __position._M_node, __v);
+               return _Res(__pos._M_node, __pos._M_node);
            }
          else
-           return _M_insert_unique(__v).first;
+           return _M_get_insert_unique_pos(__k);
        }
-      else if (_M_impl._M_key_compare(_S_key(__position._M_node),
-                                     _KeyOfValue()(__v)))
+      else if (_M_impl._M_key_compare(_S_key(__pos._M_node), __k))
        {
          // ... then try after.
-         const_iterator __after = __position;
-         if (__position._M_node == _M_rightmost())
-           return _M_insert_(0, _M_rightmost(), __v);
-         else if (_M_impl._M_key_compare(_KeyOfValue()(__v),
-                                         _S_key((++__after)._M_node)))
+         iterator __after = __pos;
+         if (__pos._M_node == _M_rightmost())
+           return _Res(0, _M_rightmost());
+         else if (_M_impl._M_key_compare(__k, _S_key((++__after)._M_node)))
            {
-             if (_S_right(__position._M_node) == 0)
-               return _M_insert_(0, __position._M_node, __v);
+             if (_S_right(__pos._M_node) == 0)
+               return _Res(0, __pos._M_node);
              else
-               return _M_insert_(__after._M_node, __after._M_node, __v);
+               return _Res(__after._M_node, __after._M_node);
            }
          else
-           return _M_insert_unique(__v).first;
+           return _M_get_insert_unique_pos(__k);
        }
       else
        // Equivalent keys.
-       return iterator(static_cast<_Link_type>
-                       (const_cast<_Base_ptr>(__position._M_node)));
+       return _Res(__pos._M_node, 0);
     }
 
   template<typename _Key, typename _Val, typename _KeyOfValue,
            typename _Compare, typename _Alloc>
+#if __cplusplus >= 201103L
+    template<typename _Arg>
+#endif
     typename _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::iterator
     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
-    _M_insert_equal_(const_iterator __position, const _Val& __v)
+#if __cplusplus >= 201103L
+    _M_insert_unique_(const_iterator __position, _Arg&& __v)
+#else
+    _M_insert_unique_(const_iterator __position, const _Val& __v)
+#endif
+    {
+      pair<_Base_ptr, _Base_ptr> __res
+       = _M_get_insert_hint_unique_pos(__position, _KeyOfValue()(__v));
+
+      if (__res.second)
+       return _M_insert_(__res.first, __res.second,
+                         _GLIBCXX_FORWARD(_Arg, __v));
+      return iterator(static_cast<_Link_type>(__res.first));
+    }
+
+  template<typename _Key, typename _Val, typename _KeyOfValue,
+           typename _Compare, typename _Alloc>
+    pair<typename _Rb_tree<_Key, _Val, _KeyOfValue,
+                          _Compare, _Alloc>::_Base_ptr,
+         typename _Rb_tree<_Key, _Val, _KeyOfValue,
+                          _Compare, _Alloc>::_Base_ptr>
+    _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
+    _M_get_insert_hint_equal_pos(const_iterator __position, const key_type& __k)
     {
+      iterator __pos = __position._M_const_cast();
+      typedef pair<_Base_ptr, _Base_ptr> _Res;
+
       // end()
-      if (__position._M_node == _M_end())
+      if (__pos._M_node == _M_end())
        {
          if (size() > 0
-             && !_M_impl._M_key_compare(_KeyOfValue()(__v),
-                                        _S_key(_M_rightmost())))
-           return _M_insert_(0, _M_rightmost(), __v);
+             && !_M_impl._M_key_compare(__k, _S_key(_M_rightmost())))
+           return _Res(0, _M_rightmost());
          else
-           return _M_insert_equal(__v);
+           return _M_get_insert_equal_pos(__k);
        }
-      else if (!_M_impl._M_key_compare(_S_key(__position._M_node),
-                                      _KeyOfValue()(__v)))
+      else if (!_M_impl._M_key_compare(_S_key(__pos._M_node), __k))
        {
          // First, try before...
-         const_iterator __before = __position;
-         if (__position._M_node == _M_leftmost()) // begin()
-           return _M_insert_(_M_leftmost(), _M_leftmost(), __v);
-         else if (!_M_impl._M_key_compare(_KeyOfValue()(__v),
-                                          _S_key((--__before)._M_node)))
+         iterator __before = __pos;
+         if (__pos._M_node == _M_leftmost()) // begin()
+           return _Res(_M_leftmost(), _M_leftmost());
+         else if (!_M_impl._M_key_compare(__k, _S_key((--__before)._M_node)))
            {
              if (_S_right(__before._M_node) == 0)
-               return _M_insert_(0, __before._M_node, __v);
+               return _Res(0, __before._M_node);
              else
-               return _M_insert_(__position._M_node,
-                                 __position._M_node, __v);
+               return _Res(__pos._M_node, __pos._M_node);
            }
          else
-           return _M_insert_equal(__v);
+           return _M_get_insert_equal_pos(__k);
        }
       else
        {
          // ... then try after.  
-         const_iterator __after = __position;
-         if (__position._M_node == _M_rightmost())
-           return _M_insert_(0, _M_rightmost(), __v);
-         else if (!_M_impl._M_key_compare(_S_key((++__after)._M_node),
-                                          _KeyOfValue()(__v)))
+         iterator __after = __pos;
+         if (__pos._M_node == _M_rightmost())
+           return _Res(0, _M_rightmost());
+         else if (!_M_impl._M_key_compare(_S_key((++__after)._M_node), __k))
            {
-             if (_S_right(__position._M_node) == 0)
-               return _M_insert_(0, __position._M_node, __v);
+             if (_S_right(__pos._M_node) == 0)
+               return _Res(0, __pos._M_node);
              else
-               return _M_insert_(__after._M_node, __after._M_node, __v);
+               return _Res(__after._M_node, __after._M_node);
            }
          else
-           return _M_insert_equal_lower(__v);
+           return _Res(0, 0);
+       }
+    }
+
+  template<typename _Key, typename _Val, typename _KeyOfValue,
+           typename _Compare, typename _Alloc>
+#if __cplusplus >= 201103L
+    template<typename _Arg>
+#endif
+    typename _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::iterator
+    _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
+#if __cplusplus >= 201103L
+    _M_insert_equal_(const_iterator __position, _Arg&& __v)
+#else
+    _M_insert_equal_(const_iterator __position, const _Val& __v)
+#endif
+    {
+      pair<_Base_ptr, _Base_ptr> __res
+       = _M_get_insert_hint_equal_pos(__position, _KeyOfValue()(__v));
+
+      if (__res.second)
+       return _M_insert_(__res.first, __res.second,
+                         _GLIBCXX_FORWARD(_Arg, __v));
+
+      return _M_insert_equal_lower(_GLIBCXX_FORWARD(_Arg, __v));
+    }
+
+#if __cplusplus >= 201103L
+  template<typename _Key, typename _Val, typename _KeyOfValue,
+           typename _Compare, typename _Alloc>
+    typename _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::iterator
+    _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
+    _M_insert_node(_Base_ptr __x, _Base_ptr __p, _Link_type __z)
+    {
+      bool __insert_left = (__x != 0 || __p == _M_end()
+                           || _M_impl._M_key_compare(_S_key(__z),
+                                                     _S_key(__p)));
+
+      _Rb_tree_insert_and_rebalance(__insert_left, __z, __p,
+                                   this->_M_impl._M_header);
+      ++_M_impl._M_node_count;
+      return iterator(__z);
+    }
+
+  template<typename _Key, typename _Val, typename _KeyOfValue,
+           typename _Compare, typename _Alloc>
+    typename _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::iterator
+    _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
+    _M_insert_lower_node(_Base_ptr __p, _Link_type __z)
+    {
+      bool __insert_left = (__p == _M_end()
+                           || !_M_impl._M_key_compare(_S_key(__p),
+                                                      _S_key(__z)));
+
+      _Rb_tree_insert_and_rebalance(__insert_left, __z, __p,
+                                   this->_M_impl._M_header);
+      ++_M_impl._M_node_count;
+      return iterator(__z);
+    }
+
+  template<typename _Key, typename _Val, typename _KeyOfValue,
+           typename _Compare, typename _Alloc>
+    typename _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::iterator
+    _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
+    _M_insert_equal_lower_node(_Link_type __z)
+    {
+      _Link_type __x = _M_begin();
+      _Link_type __y = _M_end();
+      while (__x != 0)
+       {
+         __y = __x;
+         __x = !_M_impl._M_key_compare(_S_key(__x), _S_key(__z)) ?
+               _S_left(__x) : _S_right(__x);
        }
+      return _M_insert_lower_node(__y, __z);
     }
 
+  template<typename _Key, typename _Val, typename _KeyOfValue,
+           typename _Compare, typename _Alloc>
+    template<typename... _Args>
+      pair<typename _Rb_tree<_Key, _Val, _KeyOfValue,
+                            _Compare, _Alloc>::iterator, bool>
+      _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
+      _M_emplace_unique(_Args&&... __args)
+      {
+       _Link_type __z = _M_create_node(std::forward<_Args>(__args)...);
+
+       __try
+         {
+           typedef pair<iterator, bool> _Res;
+           auto __res = _M_get_insert_unique_pos(_S_key(__z));
+           if (__res.second)
+             return _Res(_M_insert_node(__res.first, __res.second, __z), true);
+       
+           _M_destroy_node(__z);
+           return _Res(iterator(static_cast<_Link_type>(__res.first)), false);
+         }
+       __catch(...)
+         {
+           _M_destroy_node(__z);
+           __throw_exception_again;
+         }
+      }
+
+  template<typename _Key, typename _Val, typename _KeyOfValue,
+           typename _Compare, typename _Alloc>
+    template<typename... _Args>
+      typename _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::iterator
+      _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
+      _M_emplace_equal(_Args&&... __args)
+      {
+       _Link_type __z = _M_create_node(std::forward<_Args>(__args)...);
+
+       __try
+         {
+           auto __res = _M_get_insert_equal_pos(_S_key(__z));
+           return _M_insert_node(__res.first, __res.second, __z);
+         }
+       __catch(...)
+         {
+           _M_destroy_node(__z);
+           __throw_exception_again;
+         }
+      }
+
+  template<typename _Key, typename _Val, typename _KeyOfValue,
+           typename _Compare, typename _Alloc>
+    template<typename... _Args>
+      typename _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::iterator
+      _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
+      _M_emplace_hint_unique(const_iterator __pos, _Args&&... __args)
+      {
+       _Link_type __z = _M_create_node(std::forward<_Args>(__args)...);
+
+       __try
+         {
+           auto __res = _M_get_insert_hint_unique_pos(__pos, _S_key(__z));
+
+           if (__res.second)
+             return _M_insert_node(__res.first, __res.second, __z);
+
+           _M_destroy_node(__z);
+           return iterator(static_cast<_Link_type>(__res.first));
+         }
+       __catch(...)
+         {
+           _M_destroy_node(__z);
+           __throw_exception_again;
+         }
+      }
+
+  template<typename _Key, typename _Val, typename _KeyOfValue,
+           typename _Compare, typename _Alloc>
+    template<typename... _Args>
+      typename _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::iterator
+      _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
+      _M_emplace_hint_equal(const_iterator __pos, _Args&&... __args)
+      {
+       _Link_type __z = _M_create_node(std::forward<_Args>(__args)...);
+
+       __try
+         {
+           auto __res = _M_get_insert_hint_equal_pos(__pos, _S_key(__z));
+
+           if (__res.second)
+             return _M_insert_node(__res.first, __res.second, __z);
+
+           return _M_insert_equal_lower_node(__z);
+         }
+       __catch(...)
+         {
+           _M_destroy_node(__z);
+           __throw_exception_again;
+         }
+      }
+#endif
+
   template<typename _Key, typename _Val, typename _KoV,
            typename _Cmp, typename _Alloc>
     template<class _II>
@@ -1337,23 +1841,9 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
 
   template<typename _Key, typename _Val, typename _KeyOfValue,
            typename _Compare, typename _Alloc>
-    inline void
-    _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
-    erase(iterator __position)
-    {
-      _Link_type __y =
-       static_cast<_Link_type>(_Rb_tree_rebalance_for_erase
-                               (__position._M_node,
-                                this->_M_impl._M_header));
-      _M_destroy_node(__y);
-      --_M_impl._M_node_count;
-    }
-
-  template<typename _Key, typename _Val, typename _KeyOfValue,
-           typename _Compare, typename _Alloc>
-    inline void
+    void
     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
-    erase(const_iterator __position)
+    _M_erase_aux(const_iterator __position)
     {
       _Link_type __y =
        static_cast<_Link_type>(_Rb_tree_rebalance_for_erase
@@ -1363,23 +1853,11 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
       --_M_impl._M_node_count;
     }
 
-  template<typename _Key, typename _Val, typename _KeyOfValue,
-           typename _Compare, typename _Alloc>
-    typename _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::size_type
-    _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
-    erase(const _Key& __x)
-    {
-      pair<iterator, iterator> __p = equal_range(__x);
-      const size_type __old_size = size();
-      erase(__p.first, __p.second);
-      return __old_size - size();
-    }
-
   template<typename _Key, typename _Val, typename _KeyOfValue,
            typename _Compare, typename _Alloc>
     void
     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
-    erase(iterator __first, iterator __last)
+    _M_erase_aux(const_iterator __first, const_iterator __last)
     {
       if (__first == begin() && __last == end())
        clear();
@@ -1390,15 +1868,14 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
 
   template<typename _Key, typename _Val, typename _KeyOfValue,
            typename _Compare, typename _Alloc>
-    void
+    typename _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::size_type
     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
-    erase(const_iterator __first, const_iterator __last)
+    erase(const _Key& __x)
     {
-      if (__first == begin() && __last == end())
-       clear();
-      else
-       while (__first != __last)
-         erase(__first++);
+      pair<iterator, iterator> __p = equal_range(__x);
+      const size_type __old_size = size();
+      erase(__p.first, __p.second);
+      return __old_size - size();
     }
 
   template<typename _Key, typename _Val, typename _KeyOfValue,
@@ -1490,6 +1967,7 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
       return true;
     }
 
-_GLIBCXX_END_NAMESPACE
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace
 
 #endif