re PR libstdc++/63775 ([C++11] Regex range with leading dash (-) not working)
[gcc.git] / libstdc++-v3 / include / bits / deque.tcc
index dedab6a311243b599b613fd21240dc08fff18e5a..9c8dd36f1f5590a3d620777857e2e3c0e54df730 100644 (file)
@@ -1,11 +1,11 @@
 // Deque implementation (out of line) -*- C++ -*-
 
-// Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
+// Copyright (C) 2001-2014 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
 // terms of the GNU General Public License as published by the
-// Free Software Foundation; either version 2, or (at your option)
+// Free Software Foundation; either version 3, or (at your option)
 // any later version.
 
 // This library is distributed in the hope that it will be useful,
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.
 
-// You should have received a copy of the GNU General Public License along
-// with this library; see the file COPYING.  If not, write to the Free
-// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
-// USA.
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
 
-// As a special exception, you may use this file as part of a free software
-// library without restriction.  Specifically, if other files instantiate
-// templates or use macros or inline functions from this file, or you compile
-// this file and link it with other files to produce an executable, this
-// file does not by itself cause the resulting executable to be covered by
-// the GNU General Public License.  This exception does not however
-// invalidate any other reasons why the executable file might be covered by
-// the GNU General Public License.
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
 
 /*
  *
  * purpose.  It is provided "as is" without express or implied warranty.
  */
 
-/** @file deque.tcc
+/** @file bits/deque.tcc
  *  This is an internal header file, included by other library headers.
- *  You should not attempt to use it directly.
+ *  Do not attempt to use it directly. @headername{deque}
  */
 
 #ifndef _DEQUE_TCC
 #define _DEQUE_TCC 1
 
-namespace std
-{ 
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_CONTAINER
+
+#if __cplusplus >= 201103L
   template <typename _Tp, typename _Alloc>
-    deque<_Tp,_Alloc>&
-    deque<_Tp,_Alloc>::
-    operator=(const deque& __x)
+    void
+    deque<_Tp, _Alloc>::
+    _M_default_initialize()
     {
-      const size_type __len = size();
-      if (&__x != this)
-      {
-        if (__len >= __x.size())
-          erase(std::copy(__x.begin(), __x.end(), this->_M_start), this->_M_finish);
-        else
+      _Map_pointer __cur;
+      __try
+        {
+          for (__cur = this->_M_impl._M_start._M_node;
+              __cur < this->_M_impl._M_finish._M_node;
+              ++__cur)
+            std::__uninitialized_default_a(*__cur, *__cur + _S_buffer_size(),
+                                          _M_get_Tp_allocator());
+          std::__uninitialized_default_a(this->_M_impl._M_finish._M_first,
+                                        this->_M_impl._M_finish._M_cur,
+                                        _M_get_Tp_allocator());
+        }
+      __catch(...)
         {
-          const_iterator __mid = __x.begin() + difference_type(__len);
-          std::copy(__x.begin(), __mid, this->_M_start);
-          insert(this->_M_finish, __mid, __x.end());
+          std::_Destroy(this->_M_impl._M_start, iterator(*__cur, __cur),
+                       _M_get_Tp_allocator());
+          __throw_exception_again;
         }
-      }
-      return *this;
-    }        
-  
+    }
+#endif
+
   template <typename _Tp, typename _Alloc>
-    typename deque<_Tp,_Alloc>::iterator 
-    deque<_Tp,_Alloc>::
-    insert(iterator position, const value_type& __x)
+    deque<_Tp, _Alloc>&
+    deque<_Tp, _Alloc>::
+    operator=(const deque& __x)
     {
-      if (position._M_cur == this->_M_start._M_cur)
+      if (&__x != this)
+       {
+#if __cplusplus >= 201103L
+         if (_Alloc_traits::_S_propagate_on_copy_assign())
+           {
+             if (!_Alloc_traits::_S_always_equal()
+                 && _M_get_Tp_allocator() != __x._M_get_Tp_allocator())
+               {
+                 // Replacement allocator cannot free existing storage,
+                 // so deallocate everything and take copy of __x's data.
+                 _M_replace_map(__x, __x.get_allocator());
+                 std::__alloc_on_copy(_M_get_Tp_allocator(),
+                                      __x._M_get_Tp_allocator());
+                 return *this;
+               }
+             std::__alloc_on_copy(_M_get_Tp_allocator(),
+                                  __x._M_get_Tp_allocator());
+           }
+#endif
+         const size_type __len = size();
+         if (__len >= __x.size())
+           _M_erase_at_end(std::copy(__x.begin(), __x.end(),
+                                     this->_M_impl._M_start));
+         else
+           {
+             const_iterator __mid = __x.begin() + difference_type(__len);
+             std::copy(__x.begin(), __mid, this->_M_impl._M_start);
+             insert(this->_M_impl._M_finish, __mid, __x.end());
+           }
+       }
+      return *this;
+    }
+
+#if __cplusplus >= 201103L
+  template<typename _Tp, typename _Alloc>
+    template<typename... _Args>
+      void
+      deque<_Tp, _Alloc>::
+      emplace_front(_Args&&... __args)
       {
-        push_front(__x);
-        return this->_M_start;
+       if (this->_M_impl._M_start._M_cur != this->_M_impl._M_start._M_first)
+         {
+           _Alloc_traits::construct(this->_M_impl,
+                                    this->_M_impl._M_start._M_cur - 1,
+                                    std::forward<_Args>(__args)...);
+           --this->_M_impl._M_start._M_cur;
+         }
+       else
+         _M_push_front_aux(std::forward<_Args>(__args)...);
       }
-      else if (position._M_cur == this->_M_finish._M_cur)
+
+  template<typename _Tp, typename _Alloc>
+    template<typename... _Args>
+      void
+      deque<_Tp, _Alloc>::
+      emplace_back(_Args&&... __args)
       {
-        push_back(__x);
-        iterator __tmp = this->_M_finish;
-        --__tmp;
-        return __tmp;
+       if (this->_M_impl._M_finish._M_cur
+           != this->_M_impl._M_finish._M_last - 1)
+         {
+           _Alloc_traits::construct(this->_M_impl,
+                                    this->_M_impl._M_finish._M_cur,
+                                    std::forward<_Args>(__args)...);
+           ++this->_M_impl._M_finish._M_cur;
+         }
+       else
+         _M_push_back_aux(std::forward<_Args>(__args)...);
       }
+#endif
+
+#if __cplusplus >= 201103L
+  template<typename _Tp, typename _Alloc>
+    template<typename... _Args>
+      typename deque<_Tp, _Alloc>::iterator
+      deque<_Tp, _Alloc>::
+      emplace(const_iterator __position, _Args&&... __args)
+      {
+       if (__position._M_cur == this->_M_impl._M_start._M_cur)
+         {
+           emplace_front(std::forward<_Args>(__args)...);
+           return this->_M_impl._M_start;
+         }
+       else if (__position._M_cur == this->_M_impl._M_finish._M_cur)
+         {
+           emplace_back(std::forward<_Args>(__args)...);
+           iterator __tmp = this->_M_impl._M_finish;
+           --__tmp;
+           return __tmp;
+         }
+       else
+         return _M_insert_aux(__position._M_const_cast(),
+                              std::forward<_Args>(__args)...);
+      }
+#endif
+
+  template <typename _Tp, typename _Alloc>
+    typename deque<_Tp, _Alloc>::iterator
+    deque<_Tp, _Alloc>::
+#if __cplusplus >= 201103L
+    insert(const_iterator __position, const value_type& __x)
+#else
+    insert(iterator __position, const value_type& __x)
+#endif
+    {
+      if (__position._M_cur == this->_M_impl._M_start._M_cur)
+       {
+         push_front(__x);
+         return this->_M_impl._M_start;
+       }
+      else if (__position._M_cur == this->_M_impl._M_finish._M_cur)
+       {
+         push_back(__x);
+         iterator __tmp = this->_M_impl._M_finish;
+         --__tmp;
+         return __tmp;
+       }
       else
-        return _M_insert_aux(position, __x);
-    }
-  
+       return _M_insert_aux(__position._M_const_cast(), __x);
+   }
+
   template <typename _Tp, typename _Alloc>
-    typename deque<_Tp,_Alloc>::iterator 
-    deque<_Tp,_Alloc>::
-    erase(iterator __position)
+    typename deque<_Tp, _Alloc>::iterator
+    deque<_Tp, _Alloc>::
+    _M_erase(iterator __position)
     {
       iterator __next = __position;
       ++__next;
-      size_type __index = __position - this->_M_start;
-      if (__index < (size() >> 1))
-      {
-        std::copy_backward(this->_M_start, __position, __next);
-        pop_front();
-      }
+      const difference_type __index = __position - begin();
+      if (static_cast<size_type>(__index) < (size() >> 1))
+       {
+         if (__position != begin())
+           _GLIBCXX_MOVE_BACKWARD3(begin(), __position, __next);
+         pop_front();
+       }
       else
-      {
-        std::copy(__next, this->_M_finish, __position);
-        pop_back();
-      }
-      return this->_M_start + __index;
+       {
+         if (__next != end())
+           _GLIBCXX_MOVE3(__next, end(), __position);
+         pop_back();
+       }
+      return begin() + __index;
     }
-  
+
   template <typename _Tp, typename _Alloc>
-    typename deque<_Tp,_Alloc>::iterator 
-    deque<_Tp,_Alloc>::
-    erase(iterator __first, iterator __last)
-    {
-      if (__first == this->_M_start && __last == this->_M_finish)
-      {
-        clear();
-        return this->_M_finish;
-      }
-      else
-      {
-        difference_type __n = __last - __first;
-        difference_type __elems_before = __first - this->_M_start;
-        if (static_cast<size_type>(__elems_before) < (size() - __n) / 2)
-        {
-          std::copy_backward(this->_M_start, __first, __last);
-          iterator __new_start = this->_M_start + __n;
-          std::_Destroy(this->_M_start, __new_start);
-          _M_destroy_nodes(this->_M_start._M_node, __new_start._M_node);
-          this->_M_start = __new_start;
-        }
-        else
-        {
-          std::copy(__last, this->_M_finish, __first);
-          iterator __new_finish = this->_M_finish - __n;
-          std::_Destroy(__new_finish, this->_M_finish);
-          _M_destroy_nodes(__new_finish._M_node + 1,
-                          this->_M_finish._M_node + 1);
-          this->_M_finish = __new_finish;
-        }
-        return this->_M_start + __elems_before;
-      }
-    }
-    
-  template <typename _Tp, typename _Alloc> 
-    void
-    deque<_Tp,_Alloc>::
-    clear()
+    typename deque<_Tp, _Alloc>::iterator
+    deque<_Tp, _Alloc>::
+    _M_erase(iterator __first, iterator __last)
     {
-      for (_Map_pointer __node = this->_M_start._M_node + 1;
-           __node < this->_M_finish._M_node;
-           ++__node)
-      {
-        std::_Destroy(*__node, *__node + _S_buffer_size());
-        _M_deallocate_node(*__node);
-      }
-    
-      if (this->_M_start._M_node != this->_M_finish._M_node)
-      {
-        std::_Destroy(this->_M_start._M_cur, this->_M_start._M_last);
-        std::_Destroy(this->_M_finish._M_first, this->_M_finish._M_cur);
-        _M_deallocate_node(this->_M_finish._M_first);
-      }
+      if (__first == __last)
+       return __first;
+      else if (__first == begin() && __last == end())
+       {
+         clear();
+         return end();
+       }
       else
-        std::_Destroy(this->_M_start._M_cur, this->_M_finish._M_cur);
-    
-      this->_M_finish = this->_M_start;
+       {
+         const difference_type __n = __last - __first;
+         const difference_type __elems_before = __first - begin();
+         if (static_cast<size_type>(__elems_before) <= (size() - __n) / 2)
+           {
+             if (__first != begin())
+               _GLIBCXX_MOVE_BACKWARD3(begin(), __first, __last);
+             _M_erase_at_begin(begin() + __n);
+           }
+         else
+           {
+             if (__last != end())
+               _GLIBCXX_MOVE3(__last, end(), __first);
+             _M_erase_at_end(end() - __n);
+           }
+         return begin() + __elems_before;
+       }
     }
-    
+
   template <typename _Tp, class _Alloc>
     template <typename _InputIterator>
       void
-      deque<_Tp,_Alloc>
-      ::_M_assign_aux(_InputIterator __first, _InputIterator __last, input_iterator_tag)
+      deque<_Tp, _Alloc>::
+      _M_assign_aux(_InputIterator __first, _InputIterator __last,
+                   std::input_iterator_tag)
       {
         iterator __cur = begin();
-        for ( ; __first != __last && __cur != end(); ++__cur, ++__first)
+        for (; __first != __last && __cur != end(); ++__cur, ++__first)
           *__cur = *__first;
         if (__first == __last)
-          erase(__cur, end());
+          _M_erase_at_end(__cur);
         else
           insert(end(), __first, __last);
       }
-    
+
   template <typename _Tp, typename _Alloc>
     void
-    deque<_Tp,_Alloc>::
+    deque<_Tp, _Alloc>::
     _M_fill_insert(iterator __pos, size_type __n, const value_type& __x)
     {
-      if (__pos._M_cur == this->_M_start._M_cur)
-      {
-        iterator __new_start = _M_reserve_elements_at_front(__n);
-        try
-          {
-            std::uninitialized_fill(__new_start, this->_M_start, __x);
-            this->_M_start = __new_start;
-          }
-        catch(...)
-          {
-            _M_destroy_nodes(__new_start._M_node, this->_M_start._M_node);
-            __throw_exception_again;
-          }
-      }
-      else if (__pos._M_cur == this->_M_finish._M_cur)
-      {
-        iterator __new_finish = _M_reserve_elements_at_back(__n);
-        try
-          {
-            std::uninitialized_fill(this->_M_finish, __new_finish, __x);
-            this->_M_finish = __new_finish;
-          }
-        catch(...)
-          {
-            _M_destroy_nodes(this->_M_finish._M_node + 1,
-                            __new_finish._M_node + 1);    
-            __throw_exception_again;
-          }
-      }
-      else 
+      if (__pos._M_cur == this->_M_impl._M_start._M_cur)
+       {
+         iterator __new_start = _M_reserve_elements_at_front(__n);
+         __try
+           {
+             std::__uninitialized_fill_a(__new_start, this->_M_impl._M_start,
+                                         __x, _M_get_Tp_allocator());
+             this->_M_impl._M_start = __new_start;
+           }
+         __catch(...)
+           {
+             _M_destroy_nodes(__new_start._M_node,
+                              this->_M_impl._M_start._M_node);
+             __throw_exception_again;
+           }
+       }
+      else if (__pos._M_cur == this->_M_impl._M_finish._M_cur)
+       {
+         iterator __new_finish = _M_reserve_elements_at_back(__n);
+         __try
+           {
+             std::__uninitialized_fill_a(this->_M_impl._M_finish,
+                                         __new_finish, __x,
+                                         _M_get_Tp_allocator());
+             this->_M_impl._M_finish = __new_finish;
+           }
+         __catch(...)
+           {
+             _M_destroy_nodes(this->_M_impl._M_finish._M_node + 1,
+                              __new_finish._M_node + 1);
+             __throw_exception_again;
+           }
+       }
+      else
         _M_insert_aux(__pos, __n, __x);
     }
-    
+
+#if __cplusplus >= 201103L
+  template <typename _Tp, typename _Alloc>
+    void
+    deque<_Tp, _Alloc>::
+    _M_default_append(size_type __n)
+    {
+      if (__n)
+       {
+         iterator __new_finish = _M_reserve_elements_at_back(__n);
+         __try
+           {
+             std::__uninitialized_default_a(this->_M_impl._M_finish,
+                                            __new_finish,
+                                            _M_get_Tp_allocator());
+             this->_M_impl._M_finish = __new_finish;
+           }
+         __catch(...)
+           {
+             _M_destroy_nodes(this->_M_impl._M_finish._M_node + 1,
+                              __new_finish._M_node + 1);
+             __throw_exception_again;
+           }
+       }
+    }
+
+  template <typename _Tp, typename _Alloc>
+    bool
+    deque<_Tp, _Alloc>::
+    _M_shrink_to_fit()
+    {
+      const difference_type __front_capacity
+       = (this->_M_impl._M_start._M_cur - this->_M_impl._M_start._M_first);
+      if (__front_capacity == 0)
+       return false;
+
+      const difference_type __back_capacity
+       = (this->_M_impl._M_finish._M_last - this->_M_impl._M_finish._M_cur);
+      if (__front_capacity + __back_capacity < _S_buffer_size())
+       return false;
+
+      return std::__shrink_to_fit_aux<deque>::_S_do_it(*this);
+    }
+#endif
+
   template <typename _Tp, typename _Alloc>
     void
-    deque<_Tp,_Alloc>::
+    deque<_Tp, _Alloc>::
     _M_fill_initialize(const value_type& __value)
     {
       _Map_pointer __cur;
-      try
+      __try
         {
-          for (__cur = this->_M_start._M_node;
-              __cur < this->_M_finish._M_node;
+          for (__cur = this->_M_impl._M_start._M_node;
+              __cur < this->_M_impl._M_finish._M_node;
               ++__cur)
-            std::uninitialized_fill(*__cur, *__cur + _S_buffer_size(), __value);
-          std::uninitialized_fill(this->_M_finish._M_first,
-                                 this->_M_finish._M_cur,
-                                 __value);
+            std::__uninitialized_fill_a(*__cur, *__cur + _S_buffer_size(),
+                                       __value, _M_get_Tp_allocator());
+          std::__uninitialized_fill_a(this->_M_impl._M_finish._M_first,
+                                     this->_M_impl._M_finish._M_cur,
+                                     __value, _M_get_Tp_allocator());
         }
-      catch(...)
+      __catch(...)
         {
-          std::_Destroy(this->_M_start, iterator(*__cur, __cur));
+          std::_Destroy(this->_M_impl._M_start, iterator(*__cur, __cur),
+                       _M_get_Tp_allocator());
           __throw_exception_again;
         }
     }
-    
+
   template <typename _Tp, typename _Alloc>
     template <typename _InputIterator>
       void
-      deque<_Tp,_Alloc>::
+      deque<_Tp, _Alloc>::
       _M_range_initialize(_InputIterator __first, _InputIterator __last,
-                          input_iterator_tag)
+                          std::input_iterator_tag)
       {
         this->_M_initialize_map(0);
-        try
+        __try
           {
-            for ( ; __first != __last; ++__first)
+            for (; __first != __last; ++__first)
+#if __cplusplus >= 201103L
+             emplace_back(*__first);
+#else
               push_back(*__first);
+#endif
           }
-        catch(...)
+        __catch(...)
           {
             clear();
             __throw_exception_again;
           }
       }
-    
+
   template <typename _Tp, typename _Alloc>
     template <typename _ForwardIterator>
       void
-      deque<_Tp,_Alloc>::
+      deque<_Tp, _Alloc>::
       _M_range_initialize(_ForwardIterator __first, _ForwardIterator __last,
-                          forward_iterator_tag)
+                          std::forward_iterator_tag)
       {
-        size_type __n = std::distance(__first, __last);
+        const size_type __n = std::distance(__first, __last);
         this->_M_initialize_map(__n);
-      
+
         _Map_pointer __cur_node;
-        try
+        __try
           {
-            for (__cur_node = this->_M_start._M_node; 
-                 __cur_node < this->_M_finish._M_node; 
+            for (__cur_node = this->_M_impl._M_start._M_node;
+                 __cur_node < this->_M_impl._M_finish._M_node;
                  ++__cur_node)
-            {
-              _ForwardIterator __mid = __first;
-              std::advance(__mid, _S_buffer_size());
-              std::uninitialized_copy(__first, __mid, *__cur_node);
-              __first = __mid;
-            }
-            std::uninitialized_copy(__first, __last, this->_M_finish._M_first);
+             {
+               _ForwardIterator __mid = __first;
+               std::advance(__mid, _S_buffer_size());
+               std::__uninitialized_copy_a(__first, __mid, *__cur_node,
+                                           _M_get_Tp_allocator());
+               __first = __mid;
+             }
+            std::__uninitialized_copy_a(__first, __last,
+                                       this->_M_impl._M_finish._M_first,
+                                       _M_get_Tp_allocator());
           }
-        catch(...)
+        __catch(...)
           {
-            std::_Destroy(this->_M_start, iterator(*__cur_node, __cur_node));
+            std::_Destroy(this->_M_impl._M_start,
+                         iterator(*__cur_node, __cur_node),
+                         _M_get_Tp_allocator());
             __throw_exception_again;
           }
       }
-    
-  // Called only if _M_finish._M_cur == _M_finish._M_last - 1.
-  template <typename _Tp, typename _Alloc>
-    void
-    deque<_Tp,_Alloc>::
-    _M_push_back_aux(const value_type& __t)
-    {
-      value_type __t_copy = __t;
-      _M_reserve_map_at_back();
-      *(this->_M_finish._M_node + 1) = this->_M_allocate_node();
-      try
-        {
-          std::_Construct(this->_M_finish._M_cur, __t_copy);
-          this->_M_finish._M_set_node(this->_M_finish._M_node + 1);
-          this->_M_finish._M_cur = this->_M_finish._M_first;
-        }
-      catch(...)
-        {
-          _M_deallocate_node(*(this->_M_finish._M_node + 1));
-          __throw_exception_again;
-        }
-    }
-    
-  // Called only if _M_start._M_cur == _M_start._M_first.
-  template <typename _Tp, typename _Alloc>
-    void
-    deque<_Tp,_Alloc>::
-    _M_push_front_aux(const value_type& __t)
-    {
-      value_type __t_copy = __t;
-      _M_reserve_map_at_front();
-      *(this->_M_start._M_node - 1) = this->_M_allocate_node();
-      try
-        {
-          this->_M_start._M_set_node(this->_M_start._M_node - 1);
-          this->_M_start._M_cur = this->_M_start._M_last - 1;
-          std::_Construct(this->_M_start._M_cur, __t_copy);
-        }
-      catch(...)
-        {
-          ++this->_M_start;
-          _M_deallocate_node(*(this->_M_start._M_node - 1));
-          __throw_exception_again;
-        }
-    } 
-    
-  // Called only if _M_finish._M_cur == _M_finish._M_first.
+
+  // Called only if _M_impl._M_finish._M_cur == _M_impl._M_finish._M_last - 1.
+  template<typename _Tp, typename _Alloc>
+#if __cplusplus >= 201103L
+    template<typename... _Args>
+      void
+      deque<_Tp, _Alloc>::
+      _M_push_back_aux(_Args&&... __args)
+#else
+      void
+      deque<_Tp, _Alloc>::
+      _M_push_back_aux(const value_type& __t)
+#endif
+      {
+       _M_reserve_map_at_back();
+       *(this->_M_impl._M_finish._M_node + 1) = this->_M_allocate_node();
+       __try
+         {
+#if __cplusplus >= 201103L
+           _Alloc_traits::construct(this->_M_impl,
+                                    this->_M_impl._M_finish._M_cur,
+                                    std::forward<_Args>(__args)...);
+#else
+           this->_M_impl.construct(this->_M_impl._M_finish._M_cur, __t);
+#endif
+           this->_M_impl._M_finish._M_set_node(this->_M_impl._M_finish._M_node
+                                               + 1);
+           this->_M_impl._M_finish._M_cur = this->_M_impl._M_finish._M_first;
+         }
+       __catch(...)
+         {
+           _M_deallocate_node(*(this->_M_impl._M_finish._M_node + 1));
+           __throw_exception_again;
+         }
+      }
+
+  // Called only if _M_impl._M_start._M_cur == _M_impl._M_start._M_first.
+  template<typename _Tp, typename _Alloc>
+#if __cplusplus >= 201103L
+    template<typename... _Args>
+      void
+      deque<_Tp, _Alloc>::
+      _M_push_front_aux(_Args&&... __args)
+#else
+      void
+      deque<_Tp, _Alloc>::
+      _M_push_front_aux(const value_type& __t)
+#endif
+      {
+       _M_reserve_map_at_front();
+       *(this->_M_impl._M_start._M_node - 1) = this->_M_allocate_node();
+       __try
+         {
+           this->_M_impl._M_start._M_set_node(this->_M_impl._M_start._M_node
+                                              - 1);
+           this->_M_impl._M_start._M_cur = this->_M_impl._M_start._M_last - 1;
+#if __cplusplus >= 201103L
+           _Alloc_traits::construct(this->_M_impl,
+                                    this->_M_impl._M_start._M_cur,
+                                    std::forward<_Args>(__args)...);
+#else
+           this->_M_impl.construct(this->_M_impl._M_start._M_cur, __t);
+#endif
+         }
+       __catch(...)
+         {
+           ++this->_M_impl._M_start;
+           _M_deallocate_node(*(this->_M_impl._M_start._M_node - 1));
+           __throw_exception_again;
+         }
+      }
+
+  // Called only if _M_impl._M_finish._M_cur == _M_impl._M_finish._M_first.
   template <typename _Tp, typename _Alloc>
-    void deque<_Tp,_Alloc>::
+    void deque<_Tp, _Alloc>::
     _M_pop_back_aux()
     {
-      _M_deallocate_node(this->_M_finish._M_first);
-      this->_M_finish._M_set_node(this->_M_finish._M_node - 1);
-      this->_M_finish._M_cur = this->_M_finish._M_last - 1;
-      std::_Destroy(this->_M_finish._M_cur);
+      _M_deallocate_node(this->_M_impl._M_finish._M_first);
+      this->_M_impl._M_finish._M_set_node(this->_M_impl._M_finish._M_node - 1);
+      this->_M_impl._M_finish._M_cur = this->_M_impl._M_finish._M_last - 1;
+      _Alloc_traits::destroy(_M_get_Tp_allocator(),
+                            this->_M_impl._M_finish._M_cur);
     }
-    
-  // Called only if _M_start._M_cur == _M_start._M_last - 1.  Note that 
-  // if the deque has at least one element (a precondition for this member 
-  // function), and if _M_start._M_cur == _M_start._M_last, then the deque 
-  // must have at least two nodes.
+
+  // Called only if _M_impl._M_start._M_cur == _M_impl._M_start._M_last - 1.
+  // Note that if the deque has at least one element (a precondition for this
+  // member function), and if
+  //   _M_impl._M_start._M_cur == _M_impl._M_start._M_last,
+  // then the deque must have at least two nodes.
   template <typename _Tp, typename _Alloc>
-    void deque<_Tp,_Alloc>::
+    void deque<_Tp, _Alloc>::
     _M_pop_front_aux()
     {
-      std::_Destroy(this->_M_start._M_cur);
-      _M_deallocate_node(this->_M_start._M_first);
-      this->_M_start._M_set_node(this->_M_start._M_node + 1);
-      this->_M_start._M_cur = this->_M_start._M_first;
-    }      
-    
+      _Alloc_traits::destroy(_M_get_Tp_allocator(),
+                            this->_M_impl._M_start._M_cur);
+      _M_deallocate_node(this->_M_impl._M_start._M_first);
+      this->_M_impl._M_start._M_set_node(this->_M_impl._M_start._M_node + 1);
+      this->_M_impl._M_start._M_cur = this->_M_impl._M_start._M_first;
+    }
+
   template <typename _Tp, typename _Alloc>
     template <typename _InputIterator>
       void
-      deque<_Tp,_Alloc>::
+      deque<_Tp, _Alloc>::
       _M_range_insert_aux(iterator __pos,
                           _InputIterator __first, _InputIterator __last,
-                          input_iterator_tag)
-      {
-        std::copy(__first, __last, std::inserter(*this, __pos));
-      }
-    
+                          std::input_iterator_tag)
+      { std::copy(__first, __last, std::inserter(*this, __pos)); }
+
   template <typename _Tp, typename _Alloc>
     template <typename _ForwardIterator>
       void
-      deque<_Tp,_Alloc>::
+      deque<_Tp, _Alloc>::
       _M_range_insert_aux(iterator __pos,
                           _ForwardIterator __first, _ForwardIterator __last,
-                          forward_iterator_tag)
+                          std::forward_iterator_tag)
       {
-        size_type __n = std::distance(__first, __last);
-        if (__pos._M_cur == this->_M_start._M_cur)
-        {
-          iterator __new_start = _M_reserve_elements_at_front(__n);
-          try
-            {
-              std::uninitialized_copy(__first, __last, __new_start);
-              this->_M_start = __new_start;
-            }
-          catch(...)
-            {
-              _M_destroy_nodes(__new_start._M_node, this->_M_start._M_node);
-              __throw_exception_again;
-            }
-        }
-        else if (__pos._M_cur == this->_M_finish._M_cur)
-        {
-          iterator __new_finish = _M_reserve_elements_at_back(__n);
-          try
-            {
-              std::uninitialized_copy(__first, __last, this->_M_finish);
-              this->_M_finish = __new_finish;
-            }
-          catch(...)
-            {
-              _M_destroy_nodes(this->_M_finish._M_node + 1,
-                              __new_finish._M_node + 1);
-              __throw_exception_again;
-            }
-        }
+        const size_type __n = std::distance(__first, __last);
+        if (__pos._M_cur == this->_M_impl._M_start._M_cur)
+         {
+           iterator __new_start = _M_reserve_elements_at_front(__n);
+           __try
+             {
+               std::__uninitialized_copy_a(__first, __last, __new_start,
+                                           _M_get_Tp_allocator());
+               this->_M_impl._M_start = __new_start;
+             }
+           __catch(...)
+             {
+               _M_destroy_nodes(__new_start._M_node,
+                                this->_M_impl._M_start._M_node);
+               __throw_exception_again;
+             }
+         }
+        else if (__pos._M_cur == this->_M_impl._M_finish._M_cur)
+         {
+           iterator __new_finish = _M_reserve_elements_at_back(__n);
+           __try
+             {
+               std::__uninitialized_copy_a(__first, __last,
+                                           this->_M_impl._M_finish,
+                                           _M_get_Tp_allocator());
+               this->_M_impl._M_finish = __new_finish;
+             }
+           __catch(...)
+             {
+               _M_destroy_nodes(this->_M_impl._M_finish._M_node + 1,
+                                __new_finish._M_node + 1);
+               __throw_exception_again;
+             }
+         }
         else
           _M_insert_aux(__pos, __first, __last, __n);
       }
-    
-  template <typename _Tp, typename _Alloc>
-    typename deque<_Tp, _Alloc>::iterator
-    deque<_Tp,_Alloc>::
-    _M_insert_aux(iterator __pos, const value_type& __x)
-    {
-      difference_type __index = __pos - this->_M_start;
-      value_type __x_copy = __x; // XXX copy
-      if (static_cast<size_type>(__index) < size() / 2)
+
+  template<typename _Tp, typename _Alloc>
+#if __cplusplus >= 201103L
+    template<typename... _Args>
+      typename deque<_Tp, _Alloc>::iterator
+      deque<_Tp, _Alloc>::
+      _M_insert_aux(iterator __pos, _Args&&... __args)
       {
-        push_front(front());
-        iterator __front1 = this->_M_start;
-        ++__front1;
-        iterator __front2 = __front1;
-        ++__front2;
-        __pos = this->_M_start + __index;
-        iterator __pos1 = __pos;
-        ++__pos1;
-        std::copy(__front2, __pos1, __front1);
-      }
-      else
+       value_type __x_copy(std::forward<_Args>(__args)...); // XXX copy
+#else
+    typename deque<_Tp, _Alloc>::iterator
+      deque<_Tp, _Alloc>::
+      _M_insert_aux(iterator __pos, const value_type& __x)
       {
-        push_back(back());
-        iterator __back1 = this->_M_finish;
-        --__back1;
-        iterator __back2 = __back1;
-        --__back2;
-        __pos = this->_M_start + __index;
-        std::copy_backward(__pos, __back2, __back1);
+       value_type __x_copy = __x; // XXX copy
+#endif
+       difference_type __index = __pos - this->_M_impl._M_start;
+       if (static_cast<size_type>(__index) < size() / 2)
+         {
+           push_front(_GLIBCXX_MOVE(front()));
+           iterator __front1 = this->_M_impl._M_start;
+           ++__front1;
+           iterator __front2 = __front1;
+           ++__front2;
+           __pos = this->_M_impl._M_start + __index;
+           iterator __pos1 = __pos;
+           ++__pos1;
+           _GLIBCXX_MOVE3(__front2, __pos1, __front1);
+         }
+       else
+         {
+           push_back(_GLIBCXX_MOVE(back()));
+           iterator __back1 = this->_M_impl._M_finish;
+           --__back1;
+           iterator __back2 = __back1;
+           --__back2;
+           __pos = this->_M_impl._M_start + __index;
+           _GLIBCXX_MOVE_BACKWARD3(__pos, __back2, __back1);
+         }
+       *__pos = _GLIBCXX_MOVE(__x_copy);
+       return __pos;
       }
-      *__pos = __x_copy;
-      return __pos;
-    }
-    
+
   template <typename _Tp, typename _Alloc>
     void
-    deque<_Tp,_Alloc>::
+    deque<_Tp, _Alloc>::
     _M_insert_aux(iterator __pos, size_type __n, const value_type& __x)
     {
-      const difference_type __elems_before = __pos - this->_M_start;
-      size_type __length = this->size();
+      const difference_type __elems_before = __pos - this->_M_impl._M_start;
+      const size_type __length = this->size();
       value_type __x_copy = __x;
       if (__elems_before < difference_type(__length / 2))
-      {
-        iterator __new_start = _M_reserve_elements_at_front(__n);
-        iterator __old_start = this->_M_start;
-        __pos = this->_M_start + __elems_before;
-        try
-          {
-            if (__elems_before >= difference_type(__n))
-            {
-              iterator __start_n = this->_M_start + difference_type(__n);
-              std::uninitialized_copy(this->_M_start, __start_n, __new_start);
-              this->_M_start = __new_start;
-              std::copy(__start_n, __pos, __old_start);
-              fill(__pos - difference_type(__n), __pos, __x_copy);
-            }
-            else
-            {
-              std::__uninitialized_copy_fill(this->_M_start, __pos, __new_start, 
-                                            this->_M_start, __x_copy);
-              this->_M_start = __new_start;
-              std::fill(__old_start, __pos, __x_copy);
-            }
-          }
-        catch(...)
-          { 
-            _M_destroy_nodes(__new_start._M_node, this->_M_start._M_node);
-            __throw_exception_again;
-          }
-      }
+       {
+         iterator __new_start = _M_reserve_elements_at_front(__n);
+         iterator __old_start = this->_M_impl._M_start;
+         __pos = this->_M_impl._M_start + __elems_before;
+         __try
+           {
+             if (__elems_before >= difference_type(__n))
+               {
+                 iterator __start_n = (this->_M_impl._M_start
+                                       + difference_type(__n));
+                 std::__uninitialized_move_a(this->_M_impl._M_start,
+                                             __start_n, __new_start,
+                                             _M_get_Tp_allocator());
+                 this->_M_impl._M_start = __new_start;
+                 _GLIBCXX_MOVE3(__start_n, __pos, __old_start);
+                 std::fill(__pos - difference_type(__n), __pos, __x_copy);
+               }
+             else
+               {
+                 std::__uninitialized_move_fill(this->_M_impl._M_start,
+                                                __pos, __new_start,
+                                                this->_M_impl._M_start,
+                                                __x_copy,
+                                                _M_get_Tp_allocator());
+                 this->_M_impl._M_start = __new_start;
+                 std::fill(__old_start, __pos, __x_copy);
+               }
+           }
+         __catch(...)
+           {
+             _M_destroy_nodes(__new_start._M_node,
+                              this->_M_impl._M_start._M_node);
+             __throw_exception_again;
+           }
+       }
       else
-      {
-        iterator __new_finish = _M_reserve_elements_at_back(__n);
-        iterator __old_finish = this->_M_finish;
-        const difference_type __elems_after = 
-          difference_type(__length) - __elems_before;
-        __pos = this->_M_finish - __elems_after;
-        try
-          {
-            if (__elems_after > difference_type(__n))
-            {
-              iterator __finish_n = this->_M_finish - difference_type(__n);
-              std::uninitialized_copy(__finish_n, this->_M_finish, this->_M_finish);
-              this->_M_finish = __new_finish;
-              std::copy_backward(__pos, __finish_n, __old_finish);
-              std::fill(__pos, __pos + difference_type(__n), __x_copy);
-            }
-            else
-            {
-              std::__uninitialized_fill_copy(this->_M_finish,
-                                            __pos + difference_type(__n),
-                                            __x_copy, __pos, this->_M_finish);
-              this->_M_finish = __new_finish;
-              std::fill(__pos, __old_finish, __x_copy);
-            }
-          }
-        catch(...)
-          { 
-            _M_destroy_nodes(this->_M_finish._M_node + 1,
-                            __new_finish._M_node + 1);
-            __throw_exception_again;
-          }
-      }
+       {
+         iterator __new_finish = _M_reserve_elements_at_back(__n);
+         iterator __old_finish = this->_M_impl._M_finish;
+         const difference_type __elems_after =
+           difference_type(__length) - __elems_before;
+         __pos = this->_M_impl._M_finish - __elems_after;
+         __try
+           {
+             if (__elems_after > difference_type(__n))
+               {
+                 iterator __finish_n = (this->_M_impl._M_finish
+                                        - difference_type(__n));
+                 std::__uninitialized_move_a(__finish_n,
+                                             this->_M_impl._M_finish,
+                                             this->_M_impl._M_finish,
+                                             _M_get_Tp_allocator());
+                 this->_M_impl._M_finish = __new_finish;
+                 _GLIBCXX_MOVE_BACKWARD3(__pos, __finish_n, __old_finish);
+                 std::fill(__pos, __pos + difference_type(__n), __x_copy);
+               }
+             else
+               {
+                 std::__uninitialized_fill_move(this->_M_impl._M_finish,
+                                                __pos + difference_type(__n),
+                                                __x_copy, __pos,
+                                                this->_M_impl._M_finish,
+                                                _M_get_Tp_allocator());
+                 this->_M_impl._M_finish = __new_finish;
+                 std::fill(__pos, __old_finish, __x_copy);
+               }
+           }
+         __catch(...)
+           {
+             _M_destroy_nodes(this->_M_impl._M_finish._M_node + 1,
+                              __new_finish._M_node + 1);
+             __throw_exception_again;
+           }
+       }
     }
-    
+
   template <typename _Tp, typename _Alloc>
     template <typename _ForwardIterator>
       void
-      deque<_Tp,_Alloc>::
+      deque<_Tp, _Alloc>::
       _M_insert_aux(iterator __pos,
                     _ForwardIterator __first, _ForwardIterator __last,
                     size_type __n)
       {
-        const difference_type __elemsbefore = __pos - this->_M_start;
-        size_type __length = size();
+        const difference_type __elemsbefore = __pos - this->_M_impl._M_start;
+        const size_type __length = size();
         if (static_cast<size_type>(__elemsbefore) < __length / 2)
-        {
-          iterator __new_start = _M_reserve_elements_at_front(__n);
-          iterator __old_start = this->_M_start;
-          __pos = this->_M_start + __elemsbefore;
-          try
-            {
-              if (__elemsbefore >= difference_type(__n))
-              {
-                iterator __start_n = this->_M_start + difference_type(__n); 
-                std::uninitialized_copy(this->_M_start, __start_n, __new_start);
-                this->_M_start = __new_start;
-                std::copy(__start_n, __pos, __old_start);
-                std::copy(__first, __last, __pos - difference_type(__n));
-              }
-              else
-              {
-                _ForwardIterator __mid = __first;
-                std::advance(__mid, difference_type(__n) - __elemsbefore);
-                std::__uninitialized_copy_copy(this->_M_start, __pos,
-                                              __first, __mid, __new_start);
-                this->_M_start = __new_start;
-                std::copy(__mid, __last, __old_start);
-              }
-            }
-          catch(...)
-            {
-              _M_destroy_nodes(__new_start._M_node, this->_M_start._M_node);
-              __throw_exception_again;
-            }
-        }
+         {
+           iterator __new_start = _M_reserve_elements_at_front(__n);
+           iterator __old_start = this->_M_impl._M_start;
+           __pos = this->_M_impl._M_start + __elemsbefore;
+           __try
+             {
+               if (__elemsbefore >= difference_type(__n))
+                 {
+                   iterator __start_n = (this->_M_impl._M_start
+                                         + difference_type(__n));
+                   std::__uninitialized_move_a(this->_M_impl._M_start,
+                                               __start_n, __new_start,
+                                               _M_get_Tp_allocator());
+                   this->_M_impl._M_start = __new_start;
+                   _GLIBCXX_MOVE3(__start_n, __pos, __old_start);
+                   std::copy(__first, __last, __pos - difference_type(__n));
+                 }
+               else
+                 {
+                   _ForwardIterator __mid = __first;
+                   std::advance(__mid, difference_type(__n) - __elemsbefore);
+                   std::__uninitialized_move_copy(this->_M_impl._M_start,
+                                                  __pos, __first, __mid,
+                                                  __new_start,
+                                                  _M_get_Tp_allocator());
+                   this->_M_impl._M_start = __new_start;
+                   std::copy(__mid, __last, __old_start);
+                 }
+             }
+           __catch(...)
+             {
+               _M_destroy_nodes(__new_start._M_node,
+                                this->_M_impl._M_start._M_node);
+               __throw_exception_again;
+             }
+         }
         else
         {
           iterator __new_finish = _M_reserve_elements_at_back(__n);
-          iterator __old_finish = this->_M_finish;
-          const difference_type __elemsafter = 
+          iterator __old_finish = this->_M_impl._M_finish;
+          const difference_type __elemsafter =
             difference_type(__length) - __elemsbefore;
-          __pos = this->_M_finish - __elemsafter;
-          try
+          __pos = this->_M_impl._M_finish - __elemsafter;
+          __try
             {
               if (__elemsafter > difference_type(__n))
-              {
-                iterator __finish_n = this->_M_finish - difference_type(__n);
-                std::uninitialized_copy(__finish_n,
-                                       this->_M_finish,
-                                       this->_M_finish);
-                this->_M_finish = __new_finish;
-                std::copy_backward(__pos, __finish_n, __old_finish);
-                std::copy(__first, __last, __pos);
-              }
+               {
+                 iterator __finish_n = (this->_M_impl._M_finish
+                                        - difference_type(__n));
+                 std::__uninitialized_move_a(__finish_n,
+                                             this->_M_impl._M_finish,
+                                             this->_M_impl._M_finish,
+                                             _M_get_Tp_allocator());
+                 this->_M_impl._M_finish = __new_finish;
+                 _GLIBCXX_MOVE_BACKWARD3(__pos, __finish_n, __old_finish);
+                 std::copy(__first, __last, __pos);
+               }
               else
-              {
-                _ForwardIterator __mid = __first;
-                std::advance(__mid, __elemsafter);
-                std::__uninitialized_copy_copy(__mid, __last, __pos,
-                                              this->_M_finish, this->_M_finish);
-                this->_M_finish = __new_finish;
-                std::copy(__first, __mid, __pos);
-              }
+               {
+                 _ForwardIterator __mid = __first;
+                 std::advance(__mid, __elemsafter);
+                 std::__uninitialized_copy_move(__mid, __last, __pos,
+                                                this->_M_impl._M_finish,
+                                                this->_M_impl._M_finish,
+                                                _M_get_Tp_allocator());
+                 this->_M_impl._M_finish = __new_finish;
+                 std::copy(__first, __mid, __pos);
+               }
             }
-          catch(...)
+          __catch(...)
             {
-              _M_destroy_nodes(this->_M_finish._M_node + 1,
+              _M_destroy_nodes(this->_M_impl._M_finish._M_node + 1,
                               __new_finish._M_node + 1);
               __throw_exception_again;
             }
         }
       }
-    
+
+   template<typename _Tp, typename _Alloc>
+     void
+     deque<_Tp, _Alloc>::
+     _M_destroy_data_aux(iterator __first, iterator __last)
+     {
+       for (_Map_pointer __node = __first._M_node + 1;
+           __node < __last._M_node; ++__node)
+        std::_Destroy(*__node, *__node + _S_buffer_size(),
+                      _M_get_Tp_allocator());
+
+       if (__first._M_node != __last._M_node)
+        {
+          std::_Destroy(__first._M_cur, __first._M_last,
+                        _M_get_Tp_allocator());
+          std::_Destroy(__last._M_first, __last._M_cur,
+                        _M_get_Tp_allocator());
+        }
+       else
+        std::_Destroy(__first._M_cur, __last._M_cur,
+                      _M_get_Tp_allocator());
+     }
+
   template <typename _Tp, typename _Alloc>
     void
-    deque<_Tp,_Alloc>::
+    deque<_Tp, _Alloc>::
     _M_new_elements_at_front(size_type __new_elems)
     {
-      size_type __new_nodes
-          = (__new_elems + _S_buffer_size() - 1) / _S_buffer_size();
+      if (this->max_size() - this->size() < __new_elems)
+       __throw_length_error(__N("deque::_M_new_elements_at_front"));
+
+      const size_type __new_nodes = ((__new_elems + _S_buffer_size() - 1)
+                                    / _S_buffer_size());
       _M_reserve_map_at_front(__new_nodes);
       size_type __i;
-      try
+      __try
         {
           for (__i = 1; __i <= __new_nodes; ++__i)
-            *(this->_M_start._M_node - __i) = this->_M_allocate_node();
+            *(this->_M_impl._M_start._M_node - __i) = this->_M_allocate_node();
         }
-      catch(...)
+      __catch(...)
         {
           for (size_type __j = 1; __j < __i; ++__j)
-            _M_deallocate_node(*(this->_M_start._M_node - __j));      
+            _M_deallocate_node(*(this->_M_impl._M_start._M_node - __j));
           __throw_exception_again;
         }
     }
-    
+
   template <typename _Tp, typename _Alloc>
     void
-    deque<_Tp,_Alloc>::
+    deque<_Tp, _Alloc>::
     _M_new_elements_at_back(size_type __new_elems)
     {
-      size_type __new_nodes
-          = (__new_elems + _S_buffer_size() - 1) / _S_buffer_size();
+      if (this->max_size() - this->size() < __new_elems)
+       __throw_length_error(__N("deque::_M_new_elements_at_back"));
+
+      const size_type __new_nodes = ((__new_elems + _S_buffer_size() - 1)
+                                    / _S_buffer_size());
       _M_reserve_map_at_back(__new_nodes);
       size_type __i;
-      try
+      __try
         {
           for (__i = 1; __i <= __new_nodes; ++__i)
-            *(this->_M_finish._M_node + __i) = this->_M_allocate_node();
+            *(this->_M_impl._M_finish._M_node + __i) = this->_M_allocate_node();
         }
-      catch(...)
+      __catch(...)
         {
           for (size_type __j = 1; __j < __i; ++__j)
-            _M_deallocate_node(*(this->_M_finish._M_node + __j));      
+            _M_deallocate_node(*(this->_M_impl._M_finish._M_node + __j));
           __throw_exception_again;
         }
     }
-    
+
   template <typename _Tp, typename _Alloc>
     void
-    deque<_Tp,_Alloc>::
+    deque<_Tp, _Alloc>::
     _M_reallocate_map(size_type __nodes_to_add, bool __add_at_front)
     {
-      size_type __old_num_nodes
-       = this->_M_finish._M_node - this->_M_start._M_node + 1;
-      size_type __new_num_nodes = __old_num_nodes + __nodes_to_add;
-    
+      const size_type __old_num_nodes
+       = this->_M_impl._M_finish._M_node - this->_M_impl._M_start._M_node + 1;
+      const size_type __new_num_nodes = __old_num_nodes + __nodes_to_add;
+
       _Map_pointer __new_nstart;
-      if (this->_M_map_size > 2 * __new_num_nodes)
-      {
-        __new_nstart
-         = this->_M_map + (this->_M_map_size - __new_num_nodes) / 2 
-         + (__add_at_front ? __nodes_to_add : 0);
-        if (__new_nstart < this->_M_start._M_node)
-          std::copy(this->_M_start._M_node,
-                   this->_M_finish._M_node + 1,
+      if (this->_M_impl._M_map_size > 2 * __new_num_nodes)
+       {
+         __new_nstart = this->_M_impl._M_map + (this->_M_impl._M_map_size
+                                        - __new_num_nodes) / 2
+                        + (__add_at_front ? __nodes_to_add : 0);
+         if (__new_nstart < this->_M_impl._M_start._M_node)
+           std::copy(this->_M_impl._M_start._M_node,
+                     this->_M_impl._M_finish._M_node + 1,
+                     __new_nstart);
+         else
+           std::copy_backward(this->_M_impl._M_start._M_node,
+                              this->_M_impl._M_finish._M_node + 1,
+                              __new_nstart + __old_num_nodes);
+       }
+      else
+       {
+         size_type __new_map_size = this->_M_impl._M_map_size
+                                    + std::max(this->_M_impl._M_map_size,
+                                               __nodes_to_add) + 2;
+
+         _Map_pointer __new_map = this->_M_allocate_map(__new_map_size);
+         __new_nstart = __new_map + (__new_map_size - __new_num_nodes) / 2
+                        + (__add_at_front ? __nodes_to_add : 0);
+         std::copy(this->_M_impl._M_start._M_node,
+                   this->_M_impl._M_finish._M_node + 1,
                    __new_nstart);
-        else
-          std::copy_backward(this->_M_start._M_node,
-                            this->_M_finish._M_node + 1, 
-                            __new_nstart + __old_num_nodes);
-      }
+         _M_deallocate_map(this->_M_impl._M_map, this->_M_impl._M_map_size);
+
+         this->_M_impl._M_map = __new_map;
+         this->_M_impl._M_map_size = __new_map_size;
+       }
+
+      this->_M_impl._M_start._M_set_node(__new_nstart);
+      this->_M_impl._M_finish._M_set_node(__new_nstart + __old_num_nodes - 1);
+    }
+
+  // Overload for deque::iterators, exploiting the "segmented-iterator
+  // optimization".
+  template<typename _Tp>
+    void
+    fill(const _Deque_iterator<_Tp, _Tp&, _Tp*>& __first,
+        const _Deque_iterator<_Tp, _Tp&, _Tp*>& __last, const _Tp& __value)
+    {
+      typedef typename _Deque_iterator<_Tp, _Tp&, _Tp*>::_Self _Self;
+
+      for (typename _Self::_Map_pointer __node = __first._M_node + 1;
+           __node < __last._M_node; ++__node)
+       std::fill(*__node, *__node + _Self::_S_buffer_size(), __value);
+
+      if (__first._M_node != __last._M_node)
+       {
+         std::fill(__first._M_cur, __first._M_last, __value);
+         std::fill(__last._M_first, __last._M_cur, __value);
+       }
       else
-      {
-        size_type __new_map_size = 
-          this->_M_map_size + std::max(this->_M_map_size, __nodes_to_add) + 2;
-    
-        _Map_pointer __new_map = this->_M_allocate_map(__new_map_size);
-        __new_nstart = __new_map + (__new_map_size - __new_num_nodes) / 2
-                             + (__add_at_front ? __nodes_to_add : 0);
-        std::copy(this->_M_start._M_node,
-                 this->_M_finish._M_node + 1,
-                 __new_nstart);
-        _M_deallocate_map(this->_M_map, this->_M_map_size);
-    
-        this->_M_map = __new_map;
-        this->_M_map_size = __new_map_size;
-      }
-    
-      this->_M_start._M_set_node(__new_nstart);
-      this->_M_finish._M_set_node(__new_nstart + __old_num_nodes - 1);
+       std::fill(__first._M_cur, __last._M_cur, __value);
+    }
+
+  template<typename _Tp>
+    _Deque_iterator<_Tp, _Tp&, _Tp*>
+    copy(_Deque_iterator<_Tp, const _Tp&, const _Tp*> __first,
+        _Deque_iterator<_Tp, const _Tp&, const _Tp*> __last,
+        _Deque_iterator<_Tp, _Tp&, _Tp*> __result)
+    {
+      typedef typename _Deque_iterator<_Tp, _Tp&, _Tp*>::_Self _Self;
+      typedef typename _Self::difference_type difference_type;
+
+      difference_type __len = __last - __first;
+      while (__len > 0)
+       {
+         const difference_type __clen
+           = std::min(__len, std::min(__first._M_last - __first._M_cur,
+                                      __result._M_last - __result._M_cur));
+         std::copy(__first._M_cur, __first._M_cur + __clen, __result._M_cur);
+         __first += __clen;
+         __result += __clen;
+         __len -= __clen;
+       }
+      return __result;
+    }
+
+  template<typename _Tp>
+    _Deque_iterator<_Tp, _Tp&, _Tp*>
+    copy_backward(_Deque_iterator<_Tp, const _Tp&, const _Tp*> __first,
+                 _Deque_iterator<_Tp, const _Tp&, const _Tp*> __last,
+                 _Deque_iterator<_Tp, _Tp&, _Tp*> __result)
+    {
+      typedef typename _Deque_iterator<_Tp, _Tp&, _Tp*>::_Self _Self;
+      typedef typename _Self::difference_type difference_type;
+
+      difference_type __len = __last - __first;
+      while (__len > 0)
+       {
+         difference_type __llen = __last._M_cur - __last._M_first;
+         _Tp* __lend = __last._M_cur;
+
+         difference_type __rlen = __result._M_cur - __result._M_first;
+         _Tp* __rend = __result._M_cur;
+
+         if (!__llen)
+           {
+             __llen = _Self::_S_buffer_size();
+             __lend = *(__last._M_node - 1) + __llen;
+           }
+         if (!__rlen)
+           {
+             __rlen = _Self::_S_buffer_size();
+             __rend = *(__result._M_node - 1) + __rlen;
+           }
+
+         const difference_type __clen = std::min(__len,
+                                                 std::min(__llen, __rlen));
+         std::copy_backward(__lend - __clen, __lend, __rend);
+         __last -= __clen;
+         __result -= __clen;
+         __len -= __clen;
+       }
+      return __result;
+    }
+
+#if __cplusplus >= 201103L
+  template<typename _Tp>
+    _Deque_iterator<_Tp, _Tp&, _Tp*>
+    move(_Deque_iterator<_Tp, const _Tp&, const _Tp*> __first,
+        _Deque_iterator<_Tp, const _Tp&, const _Tp*> __last,
+        _Deque_iterator<_Tp, _Tp&, _Tp*> __result)
+    {
+      typedef typename _Deque_iterator<_Tp, _Tp&, _Tp*>::_Self _Self;
+      typedef typename _Self::difference_type difference_type;
+
+      difference_type __len = __last - __first;
+      while (__len > 0)
+       {
+         const difference_type __clen
+           = std::min(__len, std::min(__first._M_last - __first._M_cur,
+                                      __result._M_last - __result._M_cur));
+         std::move(__first._M_cur, __first._M_cur + __clen, __result._M_cur);
+         __first += __clen;
+         __result += __clen;
+         __len -= __clen;
+       }
+      return __result;
     }
-} // namespace std 
-  
+
+  template<typename _Tp>
+    _Deque_iterator<_Tp, _Tp&, _Tp*>
+    move_backward(_Deque_iterator<_Tp, const _Tp&, const _Tp*> __first,
+                 _Deque_iterator<_Tp, const _Tp&, const _Tp*> __last,
+                 _Deque_iterator<_Tp, _Tp&, _Tp*> __result)
+    {
+      typedef typename _Deque_iterator<_Tp, _Tp&, _Tp*>::_Self _Self;
+      typedef typename _Self::difference_type difference_type;
+
+      difference_type __len = __last - __first;
+      while (__len > 0)
+       {
+         difference_type __llen = __last._M_cur - __last._M_first;
+         _Tp* __lend = __last._M_cur;
+
+         difference_type __rlen = __result._M_cur - __result._M_first;
+         _Tp* __rend = __result._M_cur;
+
+         if (!__llen)
+           {
+             __llen = _Self::_S_buffer_size();
+             __lend = *(__last._M_node - 1) + __llen;
+           }
+         if (!__rlen)
+           {
+             __rlen = _Self::_S_buffer_size();
+             __rend = *(__result._M_node - 1) + __rlen;
+           }
+
+         const difference_type __clen = std::min(__len,
+                                                 std::min(__llen, __rlen));
+         std::move_backward(__lend - __clen, __lend, __rend);
+         __last -= __clen;
+         __result -= __clen;
+         __len -= __clen;
+       }
+      return __result;
+    }
+#endif
+
+_GLIBCXX_END_NAMESPACE_CONTAINER
+} // namespace std
+
 #endif