LCOV - code coverage report
Current view: directory - usr/include/c++/4.6/bits - stl_tree.h (source / functions) Found Hit Coverage
Test: coverage.lcov Lines: 194 166 85.6 %
Date: 2014-07-02 Functions: 0 0 -

       1                 : // RB tree implementation -*- C++ -*-
       2                 : 
       3                 : // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
       4                 : // 2009, 2010, 2011
       5                 : // Free Software Foundation, Inc.
       6                 : //
       7                 : // This file is part of the GNU ISO C++ Library.  This library is free
       8                 : // software; you can redistribute it and/or modify it under the
       9                 : // terms of the GNU General Public License as published by the
      10                 : // Free Software Foundation; either version 3, or (at your option)
      11                 : // any later version.
      12                 : 
      13                 : // This library is distributed in the hope that it will be useful,
      14                 : // but WITHOUT ANY WARRANTY; without even the implied warranty of
      15                 : // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      16                 : // GNU General Public License for more details.
      17                 : 
      18                 : // Under Section 7 of GPL version 3, you are granted additional
      19                 : // permissions described in the GCC Runtime Library Exception, version
      20                 : // 3.1, as published by the Free Software Foundation.
      21                 : 
      22                 : // You should have received a copy of the GNU General Public License and
      23                 : // a copy of the GCC Runtime Library Exception along with this program;
      24                 : // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
      25                 : // <http://www.gnu.org/licenses/>.
      26                 : 
      27                 : /*
      28                 :  *
      29                 :  * Copyright (c) 1996,1997
      30                 :  * Silicon Graphics Computer Systems, Inc.
      31                 :  *
      32                 :  * Permission to use, copy, modify, distribute and sell this software
      33                 :  * and its documentation for any purpose is hereby granted without fee,
      34                 :  * provided that the above copyright notice appear in all copies and
      35                 :  * that both that copyright notice and this permission notice appear
      36                 :  * in supporting documentation.  Silicon Graphics makes no
      37                 :  * representations about the suitability of this software for any
      38                 :  * purpose.  It is provided "as is" without express or implied warranty.
      39                 :  *
      40                 :  *
      41                 :  * Copyright (c) 1994
      42                 :  * Hewlett-Packard Company
      43                 :  *
      44                 :  * Permission to use, copy, modify, distribute and sell this software
      45                 :  * and its documentation for any purpose is hereby granted without fee,
      46                 :  * provided that the above copyright notice appear in all copies and
      47                 :  * that both that copyright notice and this permission notice appear
      48                 :  * in supporting documentation.  Hewlett-Packard Company makes no
      49                 :  * representations about the suitability of this software for any
      50                 :  * purpose.  It is provided "as is" without express or implied warranty.
      51                 :  *
      52                 :  *
      53                 :  */
      54                 : 
      55                 : /** @file bits/stl_tree.h
      56                 :  *  This is an internal header file, included by other library headers.
      57                 :  *  Do not attempt to use it directly. @headername{map or set}
      58                 :  */
      59                 : 
      60                 : #ifndef _STL_TREE_H
      61                 : #define _STL_TREE_H 1
      62                 : 
      63                 : #include <bits/stl_algobase.h>
      64                 : #include <bits/allocator.h>
      65                 : #include <bits/stl_function.h>
      66                 : #include <bits/cpp_type_traits.h>
      67                 : 
      68                 : namespace std _GLIBCXX_VISIBILITY(default)
      69                 : {
      70                 : _GLIBCXX_BEGIN_NAMESPACE_VERSION
      71                 : 
      72                 :   // Red-black tree class, designed for use in implementing STL
      73                 :   // associative containers (set, multiset, map, and multimap). The
      74                 :   // insertion and deletion algorithms are based on those in Cormen,
      75                 :   // Leiserson, and Rivest, Introduction to Algorithms (MIT Press,
      76                 :   // 1990), except that
      77                 :   //
      78                 :   // (1) the header cell is maintained with links not only to the root
      79                 :   // but also to the leftmost node of the tree, to enable constant
      80                 :   // time begin(), and to the rightmost node of the tree, to enable
      81                 :   // linear time performance when used with the generic set algorithms
      82                 :   // (set_union, etc.)
      83                 :   // 
      84                 :   // (2) when a node being deleted has two children its successor node
      85                 :   // is relinked into its place, rather than copied, so that the only
      86                 :   // iterators invalidated are those referring to the deleted node.
      87                 : 
      88                 :   enum _Rb_tree_color { _S_red = false, _S_black = true };
      89                 : 
      90                 :   struct _Rb_tree_node_base
      91                 :   {
      92                 :     typedef _Rb_tree_node_base* _Base_ptr;
      93                 :     typedef const _Rb_tree_node_base* _Const_Base_ptr;
      94                 : 
      95                 :     _Rb_tree_color      _M_color;
      96                 :     _Base_ptr           _M_parent;
      97                 :     _Base_ptr           _M_left;
      98                 :     _Base_ptr           _M_right;
      99                 : 
     100                 :     static _Base_ptr
     101                 :     _S_minimum(_Base_ptr __x)
     102                 :     {
     103                 :       while (__x->_M_left != 0) __x = __x->_M_left;
     104                 :       return __x;
     105                 :     }
     106                 : 
     107                 :     static _Const_Base_ptr
     108                 :     _S_minimum(_Const_Base_ptr __x)
     109                 :     {
     110                 :       while (__x->_M_left != 0) __x = __x->_M_left;
     111                 :       return __x;
     112                 :     }
     113                 : 
     114                 :     static _Base_ptr
     115                 :     _S_maximum(_Base_ptr __x)
     116                 :     {
     117                 :       while (__x->_M_right != 0) __x = __x->_M_right;
     118                 :       return __x;
     119                 :     }
     120                 : 
     121                 :     static _Const_Base_ptr
     122                 :     _S_maximum(_Const_Base_ptr __x)
     123                 :     {
     124                 :       while (__x->_M_right != 0) __x = __x->_M_right;
     125                 :       return __x;
     126                 :     }
     127                 :   };
     128                 : 
     129                 :   template<typename _Val>
     130                 :     struct _Rb_tree_node : public _Rb_tree_node_base
     131                 :     {
     132                 :       typedef _Rb_tree_node<_Val>* _Link_type;
     133                 :       _Val _M_value_field;
     134                 : 
     135                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
     136                 :       template<typename... _Args>
     137                 :         _Rb_tree_node(_Args&&... __args)
     138                 :         : _Rb_tree_node_base(),
     139                 :           _M_value_field(std::forward<_Args>(__args)...) { }
     140                 : #endif
     141                 :     };
     142                 : 
     143                 :   _GLIBCXX_PURE _Rb_tree_node_base*
     144                 :   _Rb_tree_increment(_Rb_tree_node_base* __x) throw ();
     145                 : 
     146                 :   _GLIBCXX_PURE const _Rb_tree_node_base*
     147                 :   _Rb_tree_increment(const _Rb_tree_node_base* __x) throw ();
     148                 : 
     149                 :   _GLIBCXX_PURE _Rb_tree_node_base*
     150                 :   _Rb_tree_decrement(_Rb_tree_node_base* __x) throw ();
     151                 : 
     152                 :   _GLIBCXX_PURE const _Rb_tree_node_base*
     153                 :   _Rb_tree_decrement(const _Rb_tree_node_base* __x) throw ();
     154                 : 
     155                 :   template<typename _Tp>
     156                 :     struct _Rb_tree_iterator
     157                 :     {
     158                 :       typedef _Tp  value_type;
     159                 :       typedef _Tp& reference;
     160                 :       typedef _Tp* pointer;
     161                 : 
     162                 :       typedef bidirectional_iterator_tag iterator_category;
     163                 :       typedef ptrdiff_t                  difference_type;
     164                 : 
     165                 :       typedef _Rb_tree_iterator<_Tp>        _Self;
     166                 :       typedef _Rb_tree_node_base::_Base_ptr _Base_ptr;
     167                 :       typedef _Rb_tree_node<_Tp>*           _Link_type;
     168                 : 
     169                 :       _Rb_tree_iterator()
     170                 :       : _M_node() { }
     171                 : 
     172                 :       explicit
     173           34208 :       _Rb_tree_iterator(_Link_type __x)
     174           34208 :       : _M_node(__x) { }
     175                 : 
     176                 :       reference
     177           22408 :       operator*() const
     178           22408 :       { return static_cast<_Link_type>(_M_node)->_M_value_field; }
     179                 : 
     180                 :       pointer
     181             314 :       operator->() const
     182                 :       { return std::__addressof(static_cast<_Link_type>
     183             314 :                                 (_M_node)->_M_value_field); }
     184                 : 
     185                 :       _Self&
     186              89 :       operator++()
     187                 :       {
     188              89 :         _M_node = _Rb_tree_increment(_M_node);
     189              89 :         return *this;
     190                 :       }
     191                 : 
     192                 :       _Self
     193                 :       operator++(int)
     194                 :       {
     195                 :         _Self __tmp = *this;
     196                 :         _M_node = _Rb_tree_increment(_M_node);
     197                 :         return __tmp;
     198                 :       }
     199                 : 
     200                 :       _Self&
     201               0 :       operator--()
     202                 :       {
     203               0 :         _M_node = _Rb_tree_decrement(_M_node);
     204               0 :         return *this;
     205                 :       }
     206                 : 
     207                 :       _Self
     208                 :       operator--(int)
     209                 :       {
     210                 :         _Self __tmp = *this;
     211                 :         _M_node = _Rb_tree_decrement(_M_node);
     212                 :         return __tmp;
     213                 :       }
     214                 : 
     215                 :       bool
     216           14587 :       operator==(const _Self& __x) const
     217           14587 :       { return _M_node == __x._M_node; }
     218                 : 
     219                 :       bool
     220            1023 :       operator!=(const _Self& __x) const
     221            1023 :       { return _M_node != __x._M_node; }
     222                 : 
     223                 :       _Base_ptr _M_node;
     224                 :   };
     225                 : 
     226                 :   template<typename _Tp>
     227                 :     struct _Rb_tree_const_iterator
     228                 :     {
     229                 :       typedef _Tp        value_type;
     230                 :       typedef const _Tp& reference;
     231                 :       typedef const _Tp* pointer;
     232                 : 
     233                 :       typedef _Rb_tree_iterator<_Tp> iterator;
     234                 : 
     235                 :       typedef bidirectional_iterator_tag iterator_category;
     236                 :       typedef ptrdiff_t                  difference_type;
     237                 : 
     238                 :       typedef _Rb_tree_const_iterator<_Tp>        _Self;
     239                 :       typedef _Rb_tree_node_base::_Const_Base_ptr _Base_ptr;
     240                 :       typedef const _Rb_tree_node<_Tp>*           _Link_type;
     241                 : 
     242             136 :       _Rb_tree_const_iterator()
     243             136 :       : _M_node() { }
     244                 : 
     245                 :       explicit
     246          194515 :       _Rb_tree_const_iterator(_Link_type __x)
     247          194515 :       : _M_node(__x) { }
     248                 : 
     249            3534 :       _Rb_tree_const_iterator(const iterator& __it)
     250            3534 :       : _M_node(__it._M_node) { }
     251                 : 
     252                 :       iterator
     253               0 :       _M_const_cast() const
     254                 :       { return iterator(static_cast<typename iterator::_Link_type>
     255               0 :                         (const_cast<typename iterator::_Base_ptr>(_M_node))); }
     256                 : 
     257                 :       reference
     258               2 :       operator*() const
     259               2 :       { return static_cast<_Link_type>(_M_node)->_M_value_field; }
     260                 : 
     261                 :       pointer
     262             399 :       operator->() const
     263                 :       { return std::__addressof(static_cast<_Link_type>
     264             399 :                                 (_M_node)->_M_value_field); }
     265                 : 
     266                 :       _Self&
     267             152 :       operator++()
     268                 :       {
     269             152 :         _M_node = _Rb_tree_increment(_M_node);
     270             152 :         return *this;
     271                 :       }
     272                 : 
     273                 :       _Self
     274               2 :       operator++(int)
     275                 :       {
     276               2 :         _Self __tmp = *this;
     277               2 :         _M_node = _Rb_tree_increment(_M_node);
     278               2 :         return __tmp;
     279                 :       }
     280                 : 
     281                 :       _Self&
     282             313 :       operator--()
     283                 :       {
     284             313 :         _M_node = _Rb_tree_decrement(_M_node);
     285             313 :         return *this;
     286                 :       }
     287                 : 
     288                 :       _Self
     289                 :       operator--(int)
     290                 :       {
     291                 :         _Self __tmp = *this;
     292                 :         _M_node = _Rb_tree_decrement(_M_node);
     293                 :         return __tmp;
     294                 :       }
     295                 : 
     296                 :       bool
     297           97418 :       operator==(const _Self& __x) const
     298           97418 :       { return _M_node == __x._M_node; }
     299                 : 
     300                 :       bool
     301             509 :       operator!=(const _Self& __x) const
     302             509 :       { return _M_node != __x._M_node; }
     303                 : 
     304                 :       _Base_ptr _M_node;
     305                 :     };
     306                 : 
     307                 :   template<typename _Val>
     308                 :     inline bool
     309                 :     operator==(const _Rb_tree_iterator<_Val>& __x,
     310                 :                const _Rb_tree_const_iterator<_Val>& __y)
     311                 :     { return __x._M_node == __y._M_node; }
     312                 : 
     313                 :   template<typename _Val>
     314                 :     inline bool
     315                 :     operator!=(const _Rb_tree_iterator<_Val>& __x,
     316                 :                const _Rb_tree_const_iterator<_Val>& __y)
     317                 :     { return __x._M_node != __y._M_node; }
     318                 : 
     319                 :   void
     320                 :   _Rb_tree_insert_and_rebalance(const bool __insert_left,
     321                 :                                 _Rb_tree_node_base* __x,
     322                 :                                 _Rb_tree_node_base* __p,
     323                 :                                 _Rb_tree_node_base& __header) throw ();
     324                 : 
     325                 :   _Rb_tree_node_base*
     326                 :   _Rb_tree_rebalance_for_erase(_Rb_tree_node_base* const __z,
     327                 :                                _Rb_tree_node_base& __header) throw ();
     328                 : 
     329                 : 
     330                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
     331                 :            typename _Compare, typename _Alloc = allocator<_Val> >
     332                 :     class _Rb_tree
     333                 :     {
     334                 :       typedef typename _Alloc::template rebind<_Rb_tree_node<_Val> >::other
     335                 :               _Node_allocator;
     336                 : 
     337                 :     protected:
     338                 :       typedef _Rb_tree_node_base* _Base_ptr;
     339                 :       typedef const _Rb_tree_node_base* _Const_Base_ptr;
     340                 : 
     341                 :     public:
     342                 :       typedef _Key key_type;
     343                 :       typedef _Val value_type;
     344                 :       typedef value_type* pointer;
     345                 :       typedef const value_type* const_pointer;
     346                 :       typedef value_type& reference;
     347                 :       typedef const value_type& const_reference;
     348                 :       typedef _Rb_tree_node<_Val>* _Link_type;
     349                 :       typedef const _Rb_tree_node<_Val>* _Const_Link_type;
     350                 :       typedef size_t size_type;
     351                 :       typedef ptrdiff_t difference_type;
     352                 :       typedef _Alloc allocator_type;
     353                 : 
     354                 :       _Node_allocator&
     355                 :       _M_get_Node_allocator()
     356                 :       { return *static_cast<_Node_allocator*>(&this->_M_impl); }
     357                 :       
     358                 :       const _Node_allocator&
     359            4416 :       _M_get_Node_allocator() const
     360            4416 :       { return *static_cast<const _Node_allocator*>(&this->_M_impl); }
     361                 : 
     362                 :       allocator_type
     363            4416 :       get_allocator() const
     364            4416 :       { return allocator_type(_M_get_Node_allocator()); }
     365                 : 
     366                 :     protected:
     367                 :       _Link_type
     368            2286 :       _M_get_node()
     369            2286 :       { return _M_impl._Node_allocator::allocate(1); }
     370                 : 
     371                 :       void
     372            2130 :       _M_put_node(_Link_type __p)
     373            2130 :       { _M_impl._Node_allocator::deallocate(__p, 1); }
     374                 : 
     375                 : #ifndef __GXX_EXPERIMENTAL_CXX0X__
     376                 :       _Link_type
     377            2286 :       _M_create_node(const value_type& __x)
     378                 :       {
     379            2286 :         _Link_type __tmp = _M_get_node();
     380                 :         __try
     381            2286 :           { get_allocator().construct
     382                 :               (std::__addressof(__tmp->_M_value_field), __x); }
     383               0 :         __catch(...)
     384                 :           {
     385               0 :             _M_put_node(__tmp);
     386               0 :             __throw_exception_again;
     387                 :           }
     388            2286 :         return __tmp;
     389                 :       }
     390                 : 
     391                 :       void
     392            2130 :       _M_destroy_node(_Link_type __p)
     393                 :       {
     394            2130 :         get_allocator().destroy(std::__addressof(__p->_M_value_field));
     395            2130 :         _M_put_node(__p);
     396            2130 :       }
     397                 : #else
     398                 :       template<typename... _Args>
     399                 :         _Link_type
     400                 :         _M_create_node(_Args&&... __args)
     401                 :         {
     402                 :           _Link_type __tmp = _M_get_node();
     403                 :           __try
     404                 :             {
     405                 :               _M_get_Node_allocator().construct(__tmp,
     406                 :                                              std::forward<_Args>(__args)...);
     407                 :             }
     408                 :           __catch(...)
     409                 :             {
     410                 :               _M_put_node(__tmp);
     411                 :               __throw_exception_again;
     412                 :             }
     413                 :           return __tmp;
     414                 :         }
     415                 : 
     416                 :       void
     417                 :       _M_destroy_node(_Link_type __p)
     418                 :       {
     419                 :         _M_get_Node_allocator().destroy(__p);
     420                 :         _M_put_node(__p);
     421                 :       }
     422                 : #endif
     423                 : 
     424                 :       _Link_type
     425                 :       _M_clone_node(_Const_Link_type __x)
     426                 :       {
     427                 :         _Link_type __tmp = _M_create_node(__x->_M_value_field);
     428                 :         __tmp->_M_color = __x->_M_color;
     429                 :         __tmp->_M_left = 0;
     430                 :         __tmp->_M_right = 0;
     431                 :         return __tmp;
     432                 :       }
     433                 : 
     434                 :     protected:
     435                 :       template<typename _Key_compare, 
     436                 :                bool _Is_pod_comparator = __is_pod(_Key_compare)>
     437            3801 :         struct _Rb_tree_impl : public _Node_allocator
     438                 :         {
     439                 :           _Key_compare          _M_key_compare;
     440                 :           _Rb_tree_node_base    _M_header;
     441                 :           size_type             _M_node_count; // Keeps track of size of tree.
     442                 : 
     443            3879 :           _Rb_tree_impl()
     444                 :           : _Node_allocator(), _M_key_compare(), _M_header(),
     445            3879 :             _M_node_count(0)
     446            3879 :           { _M_initialize(); }
     447                 : 
     448                 :           _Rb_tree_impl(const _Key_compare& __comp, const _Node_allocator& __a)
     449                 :           : _Node_allocator(__a), _M_key_compare(__comp), _M_header(),
     450                 :             _M_node_count(0)
     451                 :           { _M_initialize(); }
     452                 : 
     453                 :         private:
     454                 :           void
     455            3879 :           _M_initialize()
     456                 :           {
     457            3879 :             this->_M_header._M_color = _S_red;
     458            3879 :             this->_M_header._M_parent = 0;
     459            3879 :             this->_M_header._M_left = &this->_M_header;
     460            3879 :             this->_M_header._M_right = &this->_M_header;
     461            3879 :           }         
     462                 :         };
     463                 : 
     464                 :       _Rb_tree_impl<_Compare> _M_impl;
     465                 : 
     466                 :     protected:
     467                 :       _Base_ptr&
     468                 :       _M_root()
     469                 :       { return this->_M_impl._M_header._M_parent; }
     470                 : 
     471                 :       _Const_Base_ptr
     472                 :       _M_root() const
     473                 :       { return this->_M_impl._M_header._M_parent; }
     474                 : 
     475                 :       _Base_ptr&
     476             628 :       _M_leftmost()
     477             628 :       { return this->_M_impl._M_header._M_left; }
     478                 : 
     479                 :       _Const_Base_ptr
     480                 :       _M_leftmost() const
     481                 :       { return this->_M_impl._M_header._M_left; }
     482                 : 
     483                 :       _Base_ptr&
     484             346 :       _M_rightmost()
     485             346 :       { return this->_M_impl._M_header._M_right; }
     486                 : 
     487                 :       _Const_Base_ptr
     488                 :       _M_rightmost() const
     489                 :       { return this->_M_impl._M_header._M_right; }
     490                 : 
     491                 :       _Link_type
     492           18103 :       _M_begin()
     493           18103 :       { return static_cast<_Link_type>(this->_M_impl._M_header._M_parent); }
     494                 : 
     495                 :       _Const_Link_type
     496           48641 :       _M_begin() const
     497                 :       {
     498                 :         return static_cast<_Const_Link_type>
     499           48641 :           (this->_M_impl._M_header._M_parent);
     500                 :       }
     501                 : 
     502                 :       _Link_type
     503           17071 :       _M_end()
     504           17071 :       { return static_cast<_Link_type>(&this->_M_impl._M_header); }
     505                 : 
     506                 :       _Const_Link_type
     507           48641 :       _M_end() const
     508           48641 :       { return static_cast<_Const_Link_type>(&this->_M_impl._M_header); }
     509                 : 
     510                 :       static const_reference
     511           28850 :       _S_value(_Const_Link_type __x)
     512           28850 :       { return __x->_M_value_field; }
     513                 : 
     514                 :       static const _Key&
     515           28850 :       _S_key(_Const_Link_type __x)
     516           28850 :       { return _KeyOfValue()(_S_value(__x)); }
     517                 : 
     518                 :       static _Link_type
     519           15441 :       _S_left(_Base_ptr __x)
     520           15441 :       { return static_cast<_Link_type>(__x->_M_left); }
     521                 : 
     522                 :       static _Const_Link_type
     523             298 :       _S_left(_Const_Base_ptr __x)
     524             298 :       { return static_cast<_Const_Link_type>(__x->_M_left); }
     525                 : 
     526                 :       static _Link_type
     527           14852 :       _S_right(_Base_ptr __x)
     528           14852 :       { return static_cast<_Link_type>(__x->_M_right); }
     529                 : 
     530                 :       static _Const_Link_type
     531            2688 :       _S_right(_Const_Base_ptr __x)
     532            2688 :       { return static_cast<_Const_Link_type>(__x->_M_right); }
     533                 : 
     534                 :       static const_reference
     535            2472 :       _S_value(_Const_Base_ptr __x)
     536            2472 :       { return static_cast<_Const_Link_type>(__x)->_M_value_field; }
     537                 : 
     538                 :       static const _Key&
     539            2472 :       _S_key(_Const_Base_ptr __x)
     540            2472 :       { return _KeyOfValue()(_S_value(__x)); }
     541                 : 
     542                 :       static _Base_ptr
     543                 :       _S_minimum(_Base_ptr __x)
     544                 :       { return _Rb_tree_node_base::_S_minimum(__x); }
     545                 : 
     546                 :       static _Const_Base_ptr
     547                 :       _S_minimum(_Const_Base_ptr __x)
     548                 :       { return _Rb_tree_node_base::_S_minimum(__x); }
     549                 : 
     550                 :       static _Base_ptr
     551                 :       _S_maximum(_Base_ptr __x)
     552                 :       { return _Rb_tree_node_base::_S_maximum(__x); }
     553                 : 
     554                 :       static _Const_Base_ptr
     555                 :       _S_maximum(_Const_Base_ptr __x)
     556                 :       { return _Rb_tree_node_base::_S_maximum(__x); }
     557                 : 
     558                 :     public:
     559                 :       typedef _Rb_tree_iterator<value_type>       iterator;
     560                 :       typedef _Rb_tree_const_iterator<value_type> const_iterator;
     561                 : 
     562                 :       typedef std::reverse_iterator<iterator>       reverse_iterator;
     563                 :       typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
     564                 : 
     565                 :     private:
     566                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
     567                 :       template<typename _Arg>
     568                 :         iterator
     569                 :         _M_insert_(_Const_Base_ptr __x, _Const_Base_ptr __y, _Arg&& __v);
     570                 : 
     571                 :       template<typename _Arg>
     572                 :         iterator
     573                 :         _M_insert_lower(_Base_ptr __x, _Base_ptr __y, _Arg&& __v);
     574                 : 
     575                 :       template<typename _Arg>
     576                 :         iterator
     577                 :         _M_insert_equal_lower(_Arg&& __x);
     578                 : #else
     579                 :       iterator
     580                 :       _M_insert_(_Const_Base_ptr __x, _Const_Base_ptr __y,
     581                 :                  const value_type& __v);
     582                 : 
     583                 :       // _GLIBCXX_RESOLVE_LIB_DEFECTS
     584                 :       // 233. Insertion hints in associative containers.
     585                 :       iterator
     586                 :       _M_insert_lower(_Base_ptr __x, _Base_ptr __y, const value_type& __v);
     587                 : 
     588                 :       iterator
     589                 :       _M_insert_equal_lower(const value_type& __x);
     590                 : #endif
     591                 : 
     592                 :       _Link_type
     593                 :       _M_copy(_Const_Link_type __x, _Link_type __p);
     594                 : 
     595                 :       void
     596                 :       _M_erase(_Link_type __x);
     597                 : 
     598                 :       iterator
     599                 :       _M_lower_bound(_Link_type __x, _Link_type __y,
     600                 :                      const _Key& __k);
     601                 : 
     602                 :       const_iterator
     603                 :       _M_lower_bound(_Const_Link_type __x, _Const_Link_type __y,
     604                 :                      const _Key& __k) const;
     605                 : 
     606                 :       iterator
     607                 :       _M_upper_bound(_Link_type __x, _Link_type __y,
     608                 :                      const _Key& __k);
     609                 : 
     610                 :       const_iterator
     611                 :       _M_upper_bound(_Const_Link_type __x, _Const_Link_type __y,
     612                 :                      const _Key& __k) const;
     613                 : 
     614                 :     public:
     615                 :       // allocation/deallocation
     616            3879 :       _Rb_tree() { }
     617                 : 
     618                 :       _Rb_tree(const _Compare& __comp,
     619                 :                const allocator_type& __a = allocator_type())
     620                 :       : _M_impl(__comp, __a) { }
     621                 : 
     622                 :       _Rb_tree(const _Rb_tree& __x)
     623                 :       : _M_impl(__x._M_impl._M_key_compare, __x._M_get_Node_allocator())
     624                 :       {
     625                 :         if (__x._M_root() != 0)
     626                 :           {
     627                 :             _M_root() = _M_copy(__x._M_begin(), _M_end());
     628                 :             _M_leftmost() = _S_minimum(_M_root());
     629                 :             _M_rightmost() = _S_maximum(_M_root());
     630                 :             _M_impl._M_node_count = __x._M_impl._M_node_count;
     631                 :           }
     632                 :       }
     633                 : 
     634                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
     635                 :       _Rb_tree(_Rb_tree&& __x);
     636                 : #endif
     637                 : 
     638            3801 :       ~_Rb_tree()
     639            3801 :       { _M_erase(_M_begin()); }
     640                 : 
     641                 :       _Rb_tree&
     642                 :       operator=(const _Rb_tree& __x);
     643                 : 
     644                 :       // Accessors.
     645                 :       _Compare
     646           11041 :       key_comp() const
     647           11041 :       { return _M_impl._M_key_compare; }
     648                 : 
     649                 :       iterator
     650            2230 :       begin()
     651                 :       { 
     652                 :         return iterator(static_cast<_Link_type>
     653            2230 :                         (this->_M_impl._M_header._M_left));
     654                 :       }
     655                 : 
     656                 :       const_iterator
     657               0 :       begin() const
     658                 :       { 
     659                 :         return const_iterator(static_cast<_Const_Link_type>
     660               0 :                               (this->_M_impl._M_header._M_left));
     661                 :       }
     662                 : 
     663                 :       iterator
     664           15390 :       end()
     665           15390 :       { return iterator(static_cast<_Link_type>(&this->_M_impl._M_header)); }
     666                 : 
     667                 :       const_iterator
     668          145874 :       end() const
     669                 :       { 
     670                 :         return const_iterator(static_cast<_Const_Link_type>
     671          145874 :                               (&this->_M_impl._M_header));
     672                 :       }
     673                 : 
     674                 :       reverse_iterator
     675                 :       rbegin()
     676                 :       { return reverse_iterator(end()); }
     677                 : 
     678                 :       const_reverse_iterator
     679                 :       rbegin() const
     680                 :       { return const_reverse_iterator(end()); }
     681                 : 
     682                 :       reverse_iterator
     683                 :       rend()
     684                 :       { return reverse_iterator(begin()); }
     685                 : 
     686                 :       const_reverse_iterator
     687                 :       rend() const
     688                 :       { return const_reverse_iterator(begin()); }
     689                 : 
     690                 :       bool
     691                 :       empty() const
     692                 :       { return _M_impl._M_node_count == 0; }
     693                 : 
     694                 :       size_type
     695             326 :       size() const
     696             326 :       { return _M_impl._M_node_count; }
     697                 : 
     698                 :       size_type
     699                 :       max_size() const
     700                 :       { return _M_get_Node_allocator().max_size(); }
     701                 : 
     702                 :       void
     703                 :       swap(_Rb_tree& __t);      
     704                 : 
     705                 :       // Insert/erase.
     706                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
     707                 :       template<typename _Arg>
     708                 :         pair<iterator, bool>
     709                 :         _M_insert_unique(_Arg&& __x);
     710                 : 
     711                 :       template<typename _Arg>
     712                 :         iterator
     713                 :         _M_insert_equal(_Arg&& __x);
     714                 : 
     715                 :       template<typename _Arg>
     716                 :         iterator
     717                 :         _M_insert_unique_(const_iterator __position, _Arg&& __x);
     718                 : 
     719                 :       template<typename _Arg>
     720                 :         iterator
     721                 :         _M_insert_equal_(const_iterator __position, _Arg&& __x);
     722                 : #else
     723                 :       pair<iterator, bool>
     724                 :       _M_insert_unique(const value_type& __x);
     725                 : 
     726                 :       iterator
     727                 :       _M_insert_equal(const value_type& __x);
     728                 : 
     729                 :       iterator
     730                 :       _M_insert_unique_(const_iterator __position, const value_type& __x);
     731                 : 
     732                 :       iterator
     733                 :       _M_insert_equal_(const_iterator __position, const value_type& __x);
     734                 : #endif
     735                 : 
     736                 :       template<typename _InputIterator>
     737                 :         void
     738                 :         _M_insert_unique(_InputIterator __first, _InputIterator __last);
     739                 : 
     740                 :       template<typename _InputIterator>
     741                 :         void
     742                 :         _M_insert_equal(_InputIterator __first, _InputIterator __last);
     743                 : 
     744                 :     private:
     745                 :       void
     746                 :       _M_erase_aux(const_iterator __position);
     747                 : 
     748                 :       void
     749                 :       _M_erase_aux(const_iterator __first, const_iterator __last);
     750                 : 
     751                 :     public:
     752                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
     753                 :       // _GLIBCXX_RESOLVE_LIB_DEFECTS
     754                 :       // DR 130. Associative erase should return an iterator.
     755                 :       iterator
     756                 :       erase(const_iterator __position)
     757                 :       {
     758                 :         const_iterator __result = __position;
     759                 :         ++__result;
     760                 :         _M_erase_aux(__position);
     761                 :         return __result._M_const_cast();
     762                 :       }
     763                 : 
     764                 :       // LWG 2059.
     765                 :       iterator
     766                 :       erase(iterator __position)
     767                 :       {
     768                 :         iterator __result = __position;
     769                 :         ++__result;
     770                 :         _M_erase_aux(__position);
     771                 :         return __result;
     772                 :       }
     773                 : #else
     774                 :       void
     775              72 :       erase(iterator __position)
     776              72 :       { _M_erase_aux(__position); }
     777                 : 
     778                 :       void
     779                 :       erase(const_iterator __position)
     780                 :       { _M_erase_aux(__position); }
     781                 : #endif
     782                 :       size_type
     783                 :       erase(const key_type& __x);
     784                 : 
     785                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
     786                 :       // _GLIBCXX_RESOLVE_LIB_DEFECTS
     787                 :       // DR 130. Associative erase should return an iterator.
     788                 :       iterator
     789                 :       erase(const_iterator __first, const_iterator __last)
     790                 :       {
     791                 :         _M_erase_aux(__first, __last);
     792                 :         return __last._M_const_cast();
     793                 :       }
     794                 : #else
     795                 :       void
     796                 :       erase(iterator __first, iterator __last)
     797                 :       { _M_erase_aux(__first, __last); }
     798                 : 
     799                 :       void
     800                 :       erase(const_iterator __first, const_iterator __last)
     801                 :       { _M_erase_aux(__first, __last); }
     802                 : #endif
     803                 :       void
     804                 :       erase(const key_type* __first, const key_type* __last);
     805                 : 
     806                 :       void
     807                 :       clear()
     808                 :       {
     809                 :         _M_erase(_M_begin());
     810                 :         _M_leftmost() = _M_end();
     811                 :         _M_root() = 0;
     812                 :         _M_rightmost() = _M_end();
     813                 :         _M_impl._M_node_count = 0;
     814                 :       }
     815                 : 
     816                 :       // Set operations.
     817                 :       iterator
     818                 :       find(const key_type& __k);
     819                 : 
     820                 :       const_iterator
     821                 :       find(const key_type& __k) const;
     822                 : 
     823                 :       size_type
     824                 :       count(const key_type& __k) const;
     825                 : 
     826                 :       iterator
     827           11367 :       lower_bound(const key_type& __k)
     828           11367 :       { return _M_lower_bound(_M_begin(), _M_end(), __k); }
     829                 : 
     830                 :       const_iterator
     831                 :       lower_bound(const key_type& __k) const
     832                 :       { return _M_lower_bound(_M_begin(), _M_end(), __k); }
     833                 : 
     834                 :       iterator
     835                 :       upper_bound(const key_type& __k)
     836                 :       { return _M_upper_bound(_M_begin(), _M_end(), __k); }
     837                 : 
     838                 :       const_iterator
     839                 :       upper_bound(const key_type& __k) const
     840                 :       { return _M_upper_bound(_M_begin(), _M_end(), __k); }
     841                 : 
     842                 :       pair<iterator, iterator>
     843                 :       equal_range(const key_type& __k);
     844                 : 
     845                 :       pair<const_iterator, const_iterator>
     846                 :       equal_range(const key_type& __k) const;
     847                 : 
     848                 :       // Debugging.
     849                 :       bool
     850                 :       __rb_verify() const;
     851                 :     };
     852                 : 
     853                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
     854                 :            typename _Compare, typename _Alloc>
     855                 :     inline bool
     856                 :     operator==(const _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>& __x,
     857                 :                const _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>& __y)
     858                 :     {
     859                 :       return __x.size() == __y.size()
     860                 :              && std::equal(__x.begin(), __x.end(), __y.begin());
     861                 :     }
     862                 : 
     863                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
     864                 :            typename _Compare, typename _Alloc>
     865                 :     inline bool
     866                 :     operator<(const _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>& __x,
     867                 :               const _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>& __y)
     868                 :     {
     869                 :       return std::lexicographical_compare(__x.begin(), __x.end(), 
     870                 :                                           __y.begin(), __y.end());
     871                 :     }
     872                 : 
     873                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
     874                 :            typename _Compare, typename _Alloc>
     875                 :     inline bool
     876                 :     operator!=(const _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>& __x,
     877                 :                const _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>& __y)
     878                 :     { return !(__x == __y); }
     879                 : 
     880                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
     881                 :            typename _Compare, typename _Alloc>
     882                 :     inline bool
     883                 :     operator>(const _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>& __x,
     884                 :               const _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>& __y)
     885                 :     { return __y < __x; }
     886                 : 
     887                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
     888                 :            typename _Compare, typename _Alloc>
     889                 :     inline bool
     890                 :     operator<=(const _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>& __x,
     891                 :                const _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>& __y)
     892                 :     { return !(__y < __x); }
     893                 : 
     894                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
     895                 :            typename _Compare, typename _Alloc>
     896                 :     inline bool
     897                 :     operator>=(const _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>& __x,
     898                 :                const _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>& __y)
     899                 :     { return !(__x < __y); }
     900                 : 
     901                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
     902                 :            typename _Compare, typename _Alloc>
     903                 :     inline void
     904                 :     swap(_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>& __x,
     905                 :          _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>& __y)
     906                 :     { __x.swap(__y); }
     907                 : 
     908                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
     909                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
     910                 :            typename _Compare, typename _Alloc>
     911                 :     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
     912                 :     _Rb_tree(_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>&& __x)
     913                 :     : _M_impl(__x._M_impl._M_key_compare, __x._M_get_Node_allocator())
     914                 :     {
     915                 :       if (__x._M_root() != 0)
     916                 :         {
     917                 :           _M_root() = __x._M_root();
     918                 :           _M_leftmost() = __x._M_leftmost();
     919                 :           _M_rightmost() = __x._M_rightmost();
     920                 :           _M_root()->_M_parent = _M_end();
     921                 : 
     922                 :           __x._M_root() = 0;
     923                 :           __x._M_leftmost() = __x._M_end();
     924                 :           __x._M_rightmost() = __x._M_end();
     925                 : 
     926                 :           this->_M_impl._M_node_count = __x._M_impl._M_node_count;
     927                 :           __x._M_impl._M_node_count = 0;
     928                 :         }
     929                 :     }
     930                 : #endif
     931                 : 
     932                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
     933                 :            typename _Compare, typename _Alloc>
     934                 :     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>&
     935                 :     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
     936                 :     operator=(const _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>& __x)
     937                 :     {
     938                 :       if (this != &__x)
     939                 :         {
     940                 :           // Note that _Key may be a constant type.
     941                 :           clear();
     942                 :           _M_impl._M_key_compare = __x._M_impl._M_key_compare;
     943                 :           if (__x._M_root() != 0)
     944                 :             {
     945                 :               _M_root() = _M_copy(__x._M_begin(), _M_end());
     946                 :               _M_leftmost() = _S_minimum(_M_root());
     947                 :               _M_rightmost() = _S_maximum(_M_root());
     948                 :               _M_impl._M_node_count = __x._M_impl._M_node_count;
     949                 :             }
     950                 :         }
     951                 :       return *this;
     952                 :     }
     953                 : 
     954                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
     955                 :            typename _Compare, typename _Alloc>
     956                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
     957                 :     template<typename _Arg>
     958                 : #endif
     959                 :     typename _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::iterator
     960            2286 :     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
     961                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
     962                 :     _M_insert_(_Const_Base_ptr __x, _Const_Base_ptr __p, _Arg&& __v)
     963                 : #else
     964                 :     _M_insert_(_Const_Base_ptr __x, _Const_Base_ptr __p, const _Val& __v)
     965                 : #endif
     966                 :     {
     967                 :       bool __insert_left = (__x != 0 || __p == _M_end()
     968                 :                             || _M_impl._M_key_compare(_KeyOfValue()(__v), 
     969            2286 :                                                       _S_key(__p)));
     970                 : 
     971            2286 :       _Link_type __z = _M_create_node(_GLIBCXX_FORWARD(_Arg, __v));
     972                 : 
     973            2286 :       _Rb_tree_insert_and_rebalance(__insert_left, __z,
     974                 :                                     const_cast<_Base_ptr>(__p),  
     975                 :                                     this->_M_impl._M_header);
     976            2286 :       ++_M_impl._M_node_count;
     977            2286 :       return iterator(__z);
     978                 :     }
     979                 : 
     980                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
     981                 :            typename _Compare, typename _Alloc>
     982                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
     983                 :     template<typename _Arg>
     984                 : #endif
     985                 :     typename _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::iterator
     986                 :     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
     987                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
     988                 :     _M_insert_lower(_Base_ptr __x, _Base_ptr __p, _Arg&& __v)
     989                 : #else
     990                 :     _M_insert_lower(_Base_ptr __x, _Base_ptr __p, const _Val& __v)
     991                 : #endif
     992                 :     {
     993                 :       bool __insert_left = (__x != 0 || __p == _M_end()
     994                 :                             || !_M_impl._M_key_compare(_S_key(__p),
     995                 :                                                        _KeyOfValue()(__v)));
     996                 : 
     997                 :       _Link_type __z = _M_create_node(_GLIBCXX_FORWARD(_Arg, __v));
     998                 : 
     999                 :       _Rb_tree_insert_and_rebalance(__insert_left, __z, __p,  
    1000                 :                                     this->_M_impl._M_header);
    1001                 :       ++_M_impl._M_node_count;
    1002                 :       return iterator(__z);
    1003                 :     }
    1004                 : 
    1005                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
    1006                 :            typename _Compare, typename _Alloc>
    1007                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
    1008                 :     template<typename _Arg>
    1009                 : #endif
    1010                 :     typename _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::iterator
    1011                 :     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
    1012                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
    1013                 :     _M_insert_equal_lower(_Arg&& __v)
    1014                 : #else
    1015                 :     _M_insert_equal_lower(const _Val& __v)
    1016                 : #endif
    1017                 :     {
    1018                 :       _Link_type __x = _M_begin();
    1019                 :       _Link_type __y = _M_end();
    1020                 :       while (__x != 0)
    1021                 :         {
    1022                 :           __y = __x;
    1023                 :           __x = !_M_impl._M_key_compare(_S_key(__x), _KeyOfValue()(__v)) ?
    1024                 :                 _S_left(__x) : _S_right(__x);
    1025                 :         }
    1026                 :       return _M_insert_lower(__x, __y, _GLIBCXX_FORWARD(_Arg, __v));
    1027                 :     }
    1028                 : 
    1029                 :   template<typename _Key, typename _Val, typename _KoV,
    1030                 :            typename _Compare, typename _Alloc>
    1031                 :     typename _Rb_tree<_Key, _Val, _KoV, _Compare, _Alloc>::_Link_type
    1032                 :     _Rb_tree<_Key, _Val, _KoV, _Compare, _Alloc>::
    1033                 :     _M_copy(_Const_Link_type __x, _Link_type __p)
    1034                 :     {
    1035                 :       // Structural copy.  __x and __p must be non-null.
    1036                 :       _Link_type __top = _M_clone_node(__x);
    1037                 :       __top->_M_parent = __p;
    1038                 : 
    1039                 :       __try
    1040                 :         {
    1041                 :           if (__x->_M_right)
    1042                 :             __top->_M_right = _M_copy(_S_right(__x), __top);
    1043                 :           __p = __top;
    1044                 :           __x = _S_left(__x);
    1045                 : 
    1046                 :           while (__x != 0)
    1047                 :             {
    1048                 :               _Link_type __y = _M_clone_node(__x);
    1049                 :               __p->_M_left = __y;
    1050                 :               __y->_M_parent = __p;
    1051                 :               if (__x->_M_right)
    1052                 :                 __y->_M_right = _M_copy(_S_right(__x), __y);
    1053                 :               __p = __y;
    1054                 :               __x = _S_left(__x);
    1055                 :             }
    1056                 :         }
    1057                 :       __catch(...)
    1058                 :         {
    1059                 :           _M_erase(__top);
    1060                 :           __throw_exception_again;
    1061                 :         }
    1062                 :       return __top;
    1063                 :     }
    1064                 : 
    1065                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
    1066                 :            typename _Compare, typename _Alloc>
    1067                 :     void
    1068            5859 :     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
    1069                 :     _M_erase(_Link_type __x)
    1070                 :     {
    1071                 :       // Erase without rebalancing.
    1072           13776 :       while (__x != 0)
    1073                 :         {
    1074            2058 :           _M_erase(_S_right(__x));
    1075            2058 :           _Link_type __y = _S_left(__x);
    1076            2058 :           _M_destroy_node(__x);
    1077            2058 :           __x = __y;
    1078                 :         }
    1079            5859 :     }
    1080                 : 
    1081                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
    1082                 :            typename _Compare, typename _Alloc>
    1083                 :     typename _Rb_tree<_Key, _Val, _KeyOfValue,
    1084                 :                       _Compare, _Alloc>::iterator
    1085           12607 :     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
    1086                 :     _M_lower_bound(_Link_type __x, _Link_type __y,
    1087                 :                    const _Key& __k)
    1088                 :     {
    1089           51391 :       while (__x != 0)
    1090           26177 :         if (!_M_impl._M_key_compare(_S_key(__x), __k))
    1091           13383 :           __y = __x, __x = _S_left(__x);
    1092                 :         else
    1093           12794 :           __x = _S_right(__x);
    1094           12607 :       return iterator(__y);
    1095                 :     }
    1096                 : 
    1097                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
    1098                 :            typename _Compare, typename _Alloc>
    1099                 :     typename _Rb_tree<_Key, _Val, _KeyOfValue,
    1100                 :                       _Compare, _Alloc>::const_iterator
    1101           48641 :     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
    1102                 :     _M_lower_bound(_Const_Link_type __x, _Const_Link_type __y,
    1103                 :                    const _Key& __k) const
    1104                 :     {
    1105           99955 :       while (__x != 0)
    1106            2673 :         if (!_M_impl._M_key_compare(_S_key(__x), __k))
    1107             298 :           __y = __x, __x = _S_left(__x);
    1108                 :         else
    1109            2375 :           __x = _S_right(__x);
    1110           48641 :       return const_iterator(__y);
    1111                 :     }
    1112                 : 
    1113                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
    1114                 :            typename _Compare, typename _Alloc>
    1115                 :     typename _Rb_tree<_Key, _Val, _KeyOfValue,
    1116                 :                       _Compare, _Alloc>::iterator
    1117                 :     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
    1118                 :     _M_upper_bound(_Link_type __x, _Link_type __y,
    1119                 :                    const _Key& __k)
    1120                 :     {
    1121                 :       while (__x != 0)
    1122                 :         if (_M_impl._M_key_compare(__k, _S_key(__x)))
    1123                 :           __y = __x, __x = _S_left(__x);
    1124                 :         else
    1125                 :           __x = _S_right(__x);
    1126                 :       return iterator(__y);
    1127                 :     }
    1128                 : 
    1129                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
    1130                 :            typename _Compare, typename _Alloc>
    1131                 :     typename _Rb_tree<_Key, _Val, _KeyOfValue,
    1132                 :                       _Compare, _Alloc>::const_iterator
    1133                 :     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
    1134                 :     _M_upper_bound(_Const_Link_type __x, _Const_Link_type __y,
    1135                 :                    const _Key& __k) const
    1136                 :     {
    1137                 :       while (__x != 0)
    1138                 :         if (_M_impl._M_key_compare(__k, _S_key(__x)))
    1139                 :           __y = __x, __x = _S_left(__x);
    1140                 :         else
    1141                 :           __x = _S_right(__x);
    1142                 :       return const_iterator(__y);
    1143                 :     }
    1144                 : 
    1145                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
    1146                 :            typename _Compare, typename _Alloc>
    1147                 :     pair<typename _Rb_tree<_Key, _Val, _KeyOfValue,
    1148                 :                            _Compare, _Alloc>::iterator,
    1149                 :          typename _Rb_tree<_Key, _Val, _KeyOfValue,
    1150                 :                            _Compare, _Alloc>::iterator>
    1151                 :     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
    1152                 :     equal_range(const _Key& __k)
    1153                 :     {
    1154                 :       _Link_type __x = _M_begin();
    1155                 :       _Link_type __y = _M_end();
    1156                 :       while (__x != 0)
    1157                 :         {
    1158                 :           if (_M_impl._M_key_compare(_S_key(__x), __k))
    1159                 :             __x = _S_right(__x);
    1160                 :           else if (_M_impl._M_key_compare(__k, _S_key(__x)))
    1161                 :             __y = __x, __x = _S_left(__x);
    1162                 :           else
    1163                 :             {
    1164                 :               _Link_type __xu(__x), __yu(__y);
    1165                 :               __y = __x, __x = _S_left(__x);
    1166                 :               __xu = _S_right(__xu);
    1167                 :               return pair<iterator,
    1168                 :                           iterator>(_M_lower_bound(__x, __y, __k),
    1169                 :                                     _M_upper_bound(__xu, __yu, __k));
    1170                 :             }
    1171                 :         }
    1172                 :       return pair<iterator, iterator>(iterator(__y),
    1173                 :                                       iterator(__y));
    1174                 :     }
    1175                 : 
    1176                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
    1177                 :            typename _Compare, typename _Alloc>
    1178                 :     pair<typename _Rb_tree<_Key, _Val, _KeyOfValue,
    1179                 :                            _Compare, _Alloc>::const_iterator,
    1180                 :          typename _Rb_tree<_Key, _Val, _KeyOfValue,
    1181                 :                            _Compare, _Alloc>::const_iterator>
    1182                 :     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
    1183                 :     equal_range(const _Key& __k) const
    1184                 :     {
    1185                 :       _Const_Link_type __x = _M_begin();
    1186                 :       _Const_Link_type __y = _M_end();
    1187                 :       while (__x != 0)
    1188                 :         {
    1189                 :           if (_M_impl._M_key_compare(_S_key(__x), __k))
    1190                 :             __x = _S_right(__x);
    1191                 :           else if (_M_impl._M_key_compare(__k, _S_key(__x)))
    1192                 :             __y = __x, __x = _S_left(__x);
    1193                 :           else
    1194                 :             {
    1195                 :               _Const_Link_type __xu(__x), __yu(__y);
    1196                 :               __y = __x, __x = _S_left(__x);
    1197                 :               __xu = _S_right(__xu);
    1198                 :               return pair<const_iterator,
    1199                 :                           const_iterator>(_M_lower_bound(__x, __y, __k),
    1200                 :                                           _M_upper_bound(__xu, __yu, __k));
    1201                 :             }
    1202                 :         }
    1203                 :       return pair<const_iterator, const_iterator>(const_iterator(__y),
    1204                 :                                                   const_iterator(__y));
    1205                 :     }
    1206                 : 
    1207                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
    1208                 :            typename _Compare, typename _Alloc>
    1209                 :     void
    1210                 :     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
    1211                 :     swap(_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>& __t)
    1212                 :     {
    1213                 :       if (_M_root() == 0)
    1214                 :         {
    1215                 :           if (__t._M_root() != 0)
    1216                 :             {
    1217                 :               _M_root() = __t._M_root();
    1218                 :               _M_leftmost() = __t._M_leftmost();
    1219                 :               _M_rightmost() = __t._M_rightmost();
    1220                 :               _M_root()->_M_parent = _M_end();
    1221                 :               
    1222                 :               __t._M_root() = 0;
    1223                 :               __t._M_leftmost() = __t._M_end();
    1224                 :               __t._M_rightmost() = __t._M_end();
    1225                 :             }
    1226                 :         }
    1227                 :       else if (__t._M_root() == 0)
    1228                 :         {
    1229                 :           __t._M_root() = _M_root();
    1230                 :           __t._M_leftmost() = _M_leftmost();
    1231                 :           __t._M_rightmost() = _M_rightmost();
    1232                 :           __t._M_root()->_M_parent = __t._M_end();
    1233                 :           
    1234                 :           _M_root() = 0;
    1235                 :           _M_leftmost() = _M_end();
    1236                 :           _M_rightmost() = _M_end();
    1237                 :         }
    1238                 :       else
    1239                 :         {
    1240                 :           std::swap(_M_root(),__t._M_root());
    1241                 :           std::swap(_M_leftmost(),__t._M_leftmost());
    1242                 :           std::swap(_M_rightmost(),__t._M_rightmost());
    1243                 :           
    1244                 :           _M_root()->_M_parent = _M_end();
    1245                 :           __t._M_root()->_M_parent = __t._M_end();
    1246                 :         }
    1247                 :       // No need to swap header's color as it does not change.
    1248                 :       std::swap(this->_M_impl._M_node_count, __t._M_impl._M_node_count);
    1249                 :       std::swap(this->_M_impl._M_key_compare, __t._M_impl._M_key_compare);
    1250                 :       
    1251                 :       // _GLIBCXX_RESOLVE_LIB_DEFECTS
    1252                 :       // 431. Swapping containers with unequal allocators.
    1253                 :       std::__alloc_swap<_Node_allocator>::
    1254                 :         _S_do_it(_M_get_Node_allocator(), __t._M_get_Node_allocator());
    1255                 :     }
    1256                 : 
    1257                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
    1258                 :            typename _Compare, typename _Alloc>
    1259                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
    1260                 :     template<typename _Arg>
    1261                 : #endif
    1262                 :     pair<typename _Rb_tree<_Key, _Val, _KeyOfValue,
    1263                 :                            _Compare, _Alloc>::iterator, bool>
    1264            1695 :     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
    1265                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
    1266                 :     _M_insert_unique(_Arg&& __v)
    1267                 : #else
    1268                 :     _M_insert_unique(const _Val& __v)
    1269                 : #endif
    1270                 :     {
    1271            1695 :       _Link_type __x = _M_begin();
    1272            1695 :       _Link_type __y = _M_end();
    1273            1695 :       bool __comp = true;
    1274            3390 :       while (__x != 0)
    1275                 :         {
    1276               0 :           __y = __x;
    1277               0 :           __comp = _M_impl._M_key_compare(_KeyOfValue()(__v), _S_key(__x));
    1278               0 :           __x = __comp ? _S_left(__x) : _S_right(__x);
    1279                 :         }
    1280            1695 :       iterator __j = iterator(__y);
    1281            1695 :       if (__comp)
    1282                 :         {
    1283            1695 :           if (__j == begin())
    1284                 :             return pair<iterator, bool>
    1285            1695 :               (_M_insert_(__x, __y, _GLIBCXX_FORWARD(_Arg, __v)), true);
    1286                 :           else
    1287               0 :             --__j;
    1288                 :         }
    1289               0 :       if (_M_impl._M_key_compare(_S_key(__j._M_node), _KeyOfValue()(__v)))
    1290                 :         return pair<iterator, bool>
    1291               0 :           (_M_insert_(__x, __y, _GLIBCXX_FORWARD(_Arg, __v)), true);
    1292               0 :       return pair<iterator, bool>(__j, false);
    1293                 :     }
    1294                 : 
    1295                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
    1296                 :            typename _Compare, typename _Alloc>
    1297                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
    1298                 :     template<typename _Arg>
    1299                 : #endif
    1300                 :     typename _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::iterator
    1301                 :     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
    1302                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
    1303                 :     _M_insert_equal(_Arg&& __v)
    1304                 : #else
    1305                 :     _M_insert_equal(const _Val& __v)
    1306                 : #endif
    1307                 :     {
    1308                 :       _Link_type __x = _M_begin();
    1309                 :       _Link_type __y = _M_end();
    1310                 :       while (__x != 0)
    1311                 :         {
    1312                 :           __y = __x;
    1313                 :           __x = _M_impl._M_key_compare(_KeyOfValue()(__v), _S_key(__x)) ?
    1314                 :                 _S_left(__x) : _S_right(__x);
    1315                 :         }
    1316                 :       return _M_insert_(__x, __y, _GLIBCXX_FORWARD(_Arg, __v));
    1317                 :     }
    1318                 : 
    1319                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
    1320                 :            typename _Compare, typename _Alloc>
    1321                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
    1322                 :     template<typename _Arg>
    1323                 : #endif
    1324                 :     typename _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::iterator
    1325             744 :     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
    1326                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
    1327                 :     _M_insert_unique_(const_iterator __position, _Arg&& __v)
    1328                 : #else
    1329                 :     _M_insert_unique_(const_iterator __position, const _Val& __v)
    1330                 : #endif
    1331                 :     {
    1332                 :       // end()
    1333             744 :       if (__position._M_node == _M_end())
    1334                 :         {
    1335             326 :           if (size() > 0
    1336                 :               && _M_impl._M_key_compare(_S_key(_M_rightmost()), 
    1337                 :                                         _KeyOfValue()(__v)))
    1338             173 :             return _M_insert_(0, _M_rightmost(), _GLIBCXX_FORWARD(_Arg, __v));
    1339                 :           else
    1340             153 :             return _M_insert_unique(_GLIBCXX_FORWARD(_Arg, __v)).first;
    1341                 :         }
    1342             418 :       else if (_M_impl._M_key_compare(_KeyOfValue()(__v),
    1343                 :                                       _S_key(__position._M_node)))
    1344                 :         {
    1345                 :           // First, try before...
    1346             418 :           const_iterator __before = __position;
    1347             418 :           if (__position._M_node == _M_leftmost()) // begin()
    1348                 :             return _M_insert_(_M_leftmost(), _M_leftmost(),
    1349             105 :                               _GLIBCXX_FORWARD(_Arg, __v));
    1350             313 :           else if (_M_impl._M_key_compare(_S_key((--__before)._M_node), 
    1351                 :                                           _KeyOfValue()(__v)))
    1352                 :             {
    1353             313 :               if (_S_right(__before._M_node) == 0)
    1354                 :                 return _M_insert_(0, __before._M_node,
    1355             157 :                                   _GLIBCXX_FORWARD(_Arg, __v));
    1356                 :               else
    1357                 :                 return _M_insert_(__position._M_node,
    1358                 :                                   __position._M_node,
    1359             156 :                                   _GLIBCXX_FORWARD(_Arg, __v));
    1360                 :             }
    1361                 :           else
    1362               0 :             return _M_insert_unique(_GLIBCXX_FORWARD(_Arg, __v)).first;
    1363                 :         }
    1364               0 :       else if (_M_impl._M_key_compare(_S_key(__position._M_node),
    1365                 :                                       _KeyOfValue()(__v)))
    1366                 :         {
    1367                 :           // ... then try after.
    1368               0 :           const_iterator __after = __position;
    1369               0 :           if (__position._M_node == _M_rightmost())
    1370                 :             return _M_insert_(0, _M_rightmost(),
    1371               0 :                               _GLIBCXX_FORWARD(_Arg, __v));
    1372               0 :           else if (_M_impl._M_key_compare(_KeyOfValue()(__v),
    1373                 :                                           _S_key((++__after)._M_node)))
    1374                 :             {
    1375               0 :               if (_S_right(__position._M_node) == 0)
    1376                 :                 return _M_insert_(0, __position._M_node,
    1377               0 :                                   _GLIBCXX_FORWARD(_Arg, __v));
    1378                 :               else
    1379                 :                 return _M_insert_(__after._M_node, __after._M_node,
    1380               0 :                                   _GLIBCXX_FORWARD(_Arg, __v));
    1381                 :             }
    1382                 :           else
    1383               0 :             return _M_insert_unique(_GLIBCXX_FORWARD(_Arg, __v)).first;
    1384                 :         }
    1385                 :       else
    1386                 :         // Equivalent keys.
    1387               0 :         return __position._M_const_cast();
    1388                 :     }
    1389                 : 
    1390                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
    1391                 :            typename _Compare, typename _Alloc>
    1392                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
    1393                 :     template<typename _Arg>
    1394                 : #endif
    1395                 :     typename _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::iterator
    1396                 :     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
    1397                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
    1398                 :     _M_insert_equal_(const_iterator __position, _Arg&& __v)
    1399                 : #else
    1400                 :     _M_insert_equal_(const_iterator __position, const _Val& __v)
    1401                 : #endif
    1402                 :     {
    1403                 :       // end()
    1404                 :       if (__position._M_node == _M_end())
    1405                 :         {
    1406                 :           if (size() > 0
    1407                 :               && !_M_impl._M_key_compare(_KeyOfValue()(__v),
    1408                 :                                          _S_key(_M_rightmost())))
    1409                 :             return _M_insert_(0, _M_rightmost(),
    1410                 :                               _GLIBCXX_FORWARD(_Arg, __v));
    1411                 :           else
    1412                 :             return _M_insert_equal(_GLIBCXX_FORWARD(_Arg, __v));
    1413                 :         }
    1414                 :       else if (!_M_impl._M_key_compare(_S_key(__position._M_node),
    1415                 :                                        _KeyOfValue()(__v)))
    1416                 :         {
    1417                 :           // First, try before...
    1418                 :           const_iterator __before = __position;
    1419                 :           if (__position._M_node == _M_leftmost()) // begin()
    1420                 :             return _M_insert_(_M_leftmost(), _M_leftmost(),
    1421                 :                               _GLIBCXX_FORWARD(_Arg, __v));
    1422                 :           else if (!_M_impl._M_key_compare(_KeyOfValue()(__v),
    1423                 :                                            _S_key((--__before)._M_node)))
    1424                 :             {
    1425                 :               if (_S_right(__before._M_node) == 0)
    1426                 :                 return _M_insert_(0, __before._M_node,
    1427                 :                                   _GLIBCXX_FORWARD(_Arg, __v));
    1428                 :               else
    1429                 :                 return _M_insert_(__position._M_node,
    1430                 :                                   __position._M_node,
    1431                 :                                   _GLIBCXX_FORWARD(_Arg, __v));
    1432                 :             }
    1433                 :           else
    1434                 :             return _M_insert_equal(_GLIBCXX_FORWARD(_Arg, __v));
    1435                 :         }
    1436                 :       else
    1437                 :         {
    1438                 :           // ... then try after.  
    1439                 :           const_iterator __after = __position;
    1440                 :           if (__position._M_node == _M_rightmost())
    1441                 :             return _M_insert_(0, _M_rightmost(),
    1442                 :                               _GLIBCXX_FORWARD(_Arg, __v));
    1443                 :           else if (!_M_impl._M_key_compare(_S_key((++__after)._M_node),
    1444                 :                                            _KeyOfValue()(__v)))
    1445                 :             {
    1446                 :               if (_S_right(__position._M_node) == 0)
    1447                 :                 return _M_insert_(0, __position._M_node,
    1448                 :                                   _GLIBCXX_FORWARD(_Arg, __v));
    1449                 :               else
    1450                 :                 return _M_insert_(__after._M_node, __after._M_node,
    1451                 :                                   _GLIBCXX_FORWARD(_Arg, __v));
    1452                 :             }
    1453                 :           else
    1454                 :             return _M_insert_equal_lower(_GLIBCXX_FORWARD(_Arg, __v));
    1455                 :         }
    1456                 :     }
    1457                 : 
    1458                 :   template<typename _Key, typename _Val, typename _KoV,
    1459                 :            typename _Cmp, typename _Alloc>
    1460                 :     template<class _II>
    1461                 :       void
    1462                 :       _Rb_tree<_Key, _Val, _KoV, _Cmp, _Alloc>::
    1463                 :       _M_insert_unique(_II __first, _II __last)
    1464                 :       {
    1465                 :         for (; __first != __last; ++__first)
    1466                 :           _M_insert_unique_(end(), *__first);
    1467                 :       }
    1468                 : 
    1469                 :   template<typename _Key, typename _Val, typename _KoV,
    1470                 :            typename _Cmp, typename _Alloc>
    1471                 :     template<class _II>
    1472                 :       void
    1473                 :       _Rb_tree<_Key, _Val, _KoV, _Cmp, _Alloc>::
    1474                 :       _M_insert_equal(_II __first, _II __last)
    1475                 :       {
    1476                 :         for (; __first != __last; ++__first)
    1477                 :           _M_insert_equal_(end(), *__first);
    1478                 :       }
    1479                 : 
    1480                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
    1481                 :            typename _Compare, typename _Alloc>
    1482                 :     void
    1483              72 :     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
    1484                 :     _M_erase_aux(const_iterator __position)
    1485                 :     {
    1486                 :       _Link_type __y =
    1487                 :         static_cast<_Link_type>(_Rb_tree_rebalance_for_erase
    1488                 :                                 (const_cast<_Base_ptr>(__position._M_node),
    1489              72 :                                  this->_M_impl._M_header));
    1490              72 :       _M_destroy_node(__y);
    1491              72 :       --_M_impl._M_node_count;
    1492              72 :     }
    1493                 : 
    1494                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
    1495                 :            typename _Compare, typename _Alloc>
    1496                 :     void
    1497                 :     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
    1498                 :     _M_erase_aux(const_iterator __first, const_iterator __last)
    1499                 :     {
    1500                 :       if (__first == begin() && __last == end())
    1501                 :         clear();
    1502                 :       else
    1503                 :         while (__first != __last)
    1504                 :           erase(__first++);
    1505                 :     }
    1506                 : 
    1507                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
    1508                 :            typename _Compare, typename _Alloc>
    1509                 :     typename _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::size_type
    1510                 :     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
    1511                 :     erase(const _Key& __x)
    1512                 :     {
    1513                 :       pair<iterator, iterator> __p = equal_range(__x);
    1514                 :       const size_type __old_size = size();
    1515                 :       erase(__p.first, __p.second);
    1516                 :       return __old_size - size();
    1517                 :     }
    1518                 : 
    1519                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
    1520                 :            typename _Compare, typename _Alloc>
    1521                 :     void
    1522                 :     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
    1523                 :     erase(const _Key* __first, const _Key* __last)
    1524                 :     {
    1525                 :       while (__first != __last)
    1526                 :         erase(*__first++);
    1527                 :     }
    1528                 : 
    1529                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
    1530                 :            typename _Compare, typename _Alloc>
    1531                 :     typename _Rb_tree<_Key, _Val, _KeyOfValue,
    1532                 :                       _Compare, _Alloc>::iterator
    1533            1240 :     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
    1534                 :     find(const _Key& __k)
    1535                 :     {
    1536            1240 :       iterator __j = _M_lower_bound(_M_begin(), _M_end(), __k);
    1537                 :       return (__j == end()
    1538                 :               || _M_impl._M_key_compare(__k,
    1539            1240 :                                         _S_key(__j._M_node))) ? end() : __j;
    1540                 :     }
    1541                 : 
    1542                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
    1543                 :            typename _Compare, typename _Alloc>
    1544                 :     typename _Rb_tree<_Key, _Val, _KeyOfValue,
    1545                 :                       _Compare, _Alloc>::const_iterator
    1546           48641 :     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
    1547                 :     find(const _Key& __k) const
    1548                 :     {
    1549           48641 :       const_iterator __j = _M_lower_bound(_M_begin(), _M_end(), __k);
    1550                 :       return (__j == end()
    1551                 :               || _M_impl._M_key_compare(__k, 
    1552           48641 :                                         _S_key(__j._M_node))) ? end() : __j;
    1553                 :     }
    1554                 : 
    1555                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
    1556                 :            typename _Compare, typename _Alloc>
    1557                 :     typename _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::size_type
    1558                 :     _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
    1559                 :     count(const _Key& __k) const
    1560                 :     {
    1561                 :       pair<const_iterator, const_iterator> __p = equal_range(__k);
    1562                 :       const size_type __n = std::distance(__p.first, __p.second);
    1563                 :       return __n;
    1564                 :     }
    1565                 : 
    1566                 :   _GLIBCXX_PURE unsigned int
    1567                 :   _Rb_tree_black_count(const _Rb_tree_node_base* __node,
    1568                 :                        const _Rb_tree_node_base* __root) throw ();
    1569                 : 
    1570                 :   template<typename _Key, typename _Val, typename _KeyOfValue,
    1571                 :            typename _Compare, typename _Alloc>
    1572                 :     bool
    1573                 :     _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::__rb_verify() const
    1574                 :     {
    1575                 :       if (_M_impl._M_node_count == 0 || begin() == end())
    1576                 :         return _M_impl._M_node_count == 0 && begin() == end()
    1577                 :                && this->_M_impl._M_header._M_left == _M_end()
    1578                 :                && this->_M_impl._M_header._M_right == _M_end();
    1579                 : 
    1580                 :       unsigned int __len = _Rb_tree_black_count(_M_leftmost(), _M_root());
    1581                 :       for (const_iterator __it = begin(); __it != end(); ++__it)
    1582                 :         {
    1583                 :           _Const_Link_type __x = static_cast<_Const_Link_type>(__it._M_node);
    1584                 :           _Const_Link_type __L = _S_left(__x);
    1585                 :           _Const_Link_type __R = _S_right(__x);
    1586                 : 
    1587                 :           if (__x->_M_color == _S_red)
    1588                 :             if ((__L && __L->_M_color == _S_red)
    1589                 :                 || (__R && __R->_M_color == _S_red))
    1590                 :               return false;
    1591                 : 
    1592                 :           if (__L && _M_impl._M_key_compare(_S_key(__x), _S_key(__L)))
    1593                 :             return false;
    1594                 :           if (__R && _M_impl._M_key_compare(_S_key(__R), _S_key(__x)))
    1595                 :             return false;
    1596                 : 
    1597                 :           if (!__L && !__R && _Rb_tree_black_count(__x, _M_root()) != __len)
    1598                 :             return false;
    1599                 :         }
    1600                 : 
    1601                 :       if (_M_leftmost() != _Rb_tree_node_base::_S_minimum(_M_root()))
    1602                 :         return false;
    1603                 :       if (_M_rightmost() != _Rb_tree_node_base::_S_maximum(_M_root()))
    1604                 :         return false;
    1605                 :       return true;
    1606                 :     }
    1607                 : 
    1608                 : _GLIBCXX_END_NAMESPACE_VERSION
    1609                 : } // namespace
    1610                 : 
    1611                 : #endif

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