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	RELENG_9_1:1.2.2.2.0.2
	RELENG_9_1_BP:1.2.2.2
	RELENG_9:1.2.0.2;
locks; strict;
comment	@# @;


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desc
@@


1.5
log
@## SVN ## Exported commit - http://svnweb.freebsd.org/changeset/base/253159
## SVN ## CVS IS DEPRECATED: http://wiki.freebsd.org/CvsIsDeprecated
@
text
@// -*- C++ -*-
//===---------------------------- list ------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#ifndef _LIBCPP_LIST
#define _LIBCPP_LIST

/*
    list synopsis

namespace std
{

template <class T, class Alloc = allocator<T> >
class list
{
public:

    // types:
    typedef T value_type;
    typedef Alloc allocator_type;
    typedef typename allocator_type::reference reference;
    typedef typename allocator_type::const_reference const_reference;
    typedef typename allocator_type::pointer pointer;
    typedef typename allocator_type::const_pointer const_pointer;
    typedef implementation-defined iterator;
    typedef implementation-defined const_iterator;
    typedef implementation-defined size_type;
    typedef implementation-defined difference_type;
    typedef reverse_iterator<iterator> reverse_iterator;
    typedef reverse_iterator<const_iterator> const_reverse_iterator;

    list()
        noexcept(is_nothrow_default_constructible<allocator_type>::value);
    explicit list(const allocator_type& a);
    explicit list(size_type n);
    list(size_type n, const value_type& value);
    list(size_type n, const value_type& value, const allocator_type& a);
    template <class Iter>
        list(Iter first, Iter last);
    template <class Iter>
        list(Iter first, Iter last, const allocator_type& a);
    list(const list& x);
    list(const list&, const allocator_type& a);
    list(list&& x)
        noexcept(is_nothrow_move_constructible<allocator_type>::value);
    list(list&&, const allocator_type& a);
    list(initializer_list<value_type>);
    list(initializer_list<value_type>, const allocator_type& a);

    ~list();

    list& operator=(const list& x);
    list& operator=(list&& x)
        noexcept(
             allocator_type::propagate_on_container_move_assignment::value &&
             is_nothrow_move_assignable<allocator_type>::value);
    list& operator=(initializer_list<value_type>);
    template <class Iter>
        void assign(Iter first, Iter last);
    void assign(size_type n, const value_type& t);
    void assign(initializer_list<value_type>);

    allocator_type get_allocator() const noexcept;

    iterator begin() noexcept;
    const_iterator begin() const noexcept;
    iterator end() noexcept;
    const_iterator end() const noexcept;
    reverse_iterator rbegin() noexcept;
    const_reverse_iterator rbegin() const noexcept;
    reverse_iterator rend() noexcept;
    const_reverse_iterator rend() const noexcept;
    const_iterator cbegin() const noexcept;
    const_iterator cend() const noexcept;
    const_reverse_iterator crbegin() const noexcept;
    const_reverse_iterator crend() const noexcept;

    reference front();
    const_reference front() const;
    reference back();
    const_reference back() const;

    bool empty() const noexcept;
    size_type size() const noexcept;
    size_type max_size() const noexcept;

    template <class... Args>
        void emplace_front(Args&&... args);
    void pop_front();
    template <class... Args>
        void emplace_back(Args&&... args);
    void pop_back();
    void push_front(const value_type& x);
    void push_front(value_type&& x);
    void push_back(const value_type& x);
    void push_back(value_type&& x);
    template <class... Args>
        iterator emplace(const_iterator position, Args&&... args);
    iterator insert(const_iterator position, const value_type& x);
    iterator insert(const_iterator position, value_type&& x);
    iterator insert(const_iterator position, size_type n, const value_type& x);
    template <class Iter>
        iterator insert(const_iterator position, Iter first, Iter last);
    iterator insert(const_iterator position, initializer_list<value_type> il);

    iterator erase(const_iterator position);
    iterator erase(const_iterator position, const_iterator last);

    void resize(size_type sz);
    void resize(size_type sz, const value_type& c);

    void swap(list&)
        noexcept(!allocator_type::propagate_on_container_swap::value ||
                 __is_nothrow_swappable<allocator_type>::value);
    void clear() noexcept;

    void splice(const_iterator position, list& x);
    void splice(const_iterator position, list&& x);
    void splice(const_iterator position, list& x, const_iterator i);
    void splice(const_iterator position, list&& x, const_iterator i);
    void splice(const_iterator position, list& x, const_iterator first,
                                                  const_iterator last);
    void splice(const_iterator position, list&& x, const_iterator first,
                                                  const_iterator last);

    void remove(const value_type& value);
    template <class Pred> void remove_if(Pred pred);
    void unique();
    template <class BinaryPredicate>
        void unique(BinaryPredicate binary_pred);
    void merge(list& x);
    void merge(list&& x);
    template <class Compare>
        void merge(list& x, Compare comp);
    template <class Compare>
        void merge(list&& x, Compare comp);
    void sort();
    template <class Compare>
        void sort(Compare comp);
    void reverse() noexcept;
};

template <class T, class Alloc>
    bool operator==(const list<T,Alloc>& x, const list<T,Alloc>& y);
template <class T, class Alloc>
    bool operator< (const list<T,Alloc>& x, const list<T,Alloc>& y);
template <class T, class Alloc>
    bool operator!=(const list<T,Alloc>& x, const list<T,Alloc>& y);
template <class T, class Alloc>
    bool operator> (const list<T,Alloc>& x, const list<T,Alloc>& y);
template <class T, class Alloc>
    bool operator>=(const list<T,Alloc>& x, const list<T,Alloc>& y);
template <class T, class Alloc>
    bool operator<=(const list<T,Alloc>& x, const list<T,Alloc>& y);

template <class T, class Alloc>
    void swap(list<T,Alloc>& x, list<T,Alloc>& y)
         noexcept(noexcept(x.swap(y)));

}  // std

*/

#include <__config>

#include <memory>
#include <limits>
#include <initializer_list>
#include <iterator>
#include <algorithm>

#include <__undef_min_max>

#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif

_LIBCPP_BEGIN_NAMESPACE_STD

template <class _Tp, class _VoidPtr> struct __list_node;

template <class _Tp, class _VoidPtr>
struct __list_node_base
{
    typedef typename pointer_traits<_VoidPtr>::template
#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
        rebind<__list_node<_Tp, _VoidPtr> > pointer;
#else
        rebind<__list_node<_Tp, _VoidPtr> >::other pointer;
#endif

    typedef typename pointer_traits<_VoidPtr>::template
#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
        rebind<__list_node_base> __base_pointer;
#else
        rebind<__list_node_base>::other __base_pointer;
#endif

    pointer __prev_;
    pointer __next_;

    _LIBCPP_INLINE_VISIBILITY
    __list_node_base()
        : __prev_(static_cast<pointer>(pointer_traits<__base_pointer>::pointer_to(*this))),
          __next_(static_cast<pointer>(pointer_traits<__base_pointer>::pointer_to(*this)))
          {}
};

template <class _Tp, class _VoidPtr>
struct __list_node
    : public __list_node_base<_Tp, _VoidPtr>
{
    _Tp __value_;
};

template <class _Tp, class _Alloc> class _LIBCPP_TYPE_VIS list;
template <class _Tp, class _Alloc> class __list_imp;
template <class _Tp, class _VoidPtr> class _LIBCPP_TYPE_VIS __list_const_iterator;

template <class _Tp, class _VoidPtr>
class _LIBCPP_TYPE_VIS __list_iterator
{
    typedef typename pointer_traits<_VoidPtr>::template
#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
        rebind<__list_node<_Tp, _VoidPtr> > __node_pointer;
#else
        rebind<__list_node<_Tp, _VoidPtr> >::other __node_pointer;
#endif

    __node_pointer __ptr_;

#if _LIBCPP_DEBUG_LEVEL >= 2
    _LIBCPP_INLINE_VISIBILITY
    explicit __list_iterator(__node_pointer __p, const void* __c) _NOEXCEPT
        : __ptr_(__p)
    {
        __get_db()->__insert_ic(this, __c);
    }
#else
    _LIBCPP_INLINE_VISIBILITY
    explicit __list_iterator(__node_pointer __p) _NOEXCEPT : __ptr_(__p) {}
#endif



    template<class, class> friend class list;
    template<class, class> friend class __list_imp;
    template<class, class> friend class __list_const_iterator;
public:
    typedef bidirectional_iterator_tag       iterator_category;
    typedef _Tp                              value_type;
    typedef value_type&                      reference;
    typedef typename pointer_traits<_VoidPtr>::template
#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
            rebind<value_type>
#else
            rebind<value_type>::other
#endif
                                             pointer;
    typedef typename pointer_traits<pointer>::difference_type difference_type;

    _LIBCPP_INLINE_VISIBILITY
    __list_iterator() _NOEXCEPT
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        __get_db()->__insert_i(this);
#endif
    }

#if _LIBCPP_DEBUG_LEVEL >= 2

    _LIBCPP_INLINE_VISIBILITY
    __list_iterator(const __list_iterator& __p)
        : __ptr_(__p.__ptr_)
    {
        __get_db()->__iterator_copy(this, &__p);
    }

    _LIBCPP_INLINE_VISIBILITY
    ~__list_iterator()
    {
        __get_db()->__erase_i(this);
    }

    _LIBCPP_INLINE_VISIBILITY
    __list_iterator& operator=(const __list_iterator& __p)
    {
        if (this != &__p)
        {
            __get_db()->__iterator_copy(this, &__p);
            __ptr_ = __p.__ptr_;
        }
        return *this;
    }

#endif  // _LIBCPP_DEBUG_LEVEL >= 2

    _LIBCPP_INLINE_VISIBILITY
    reference operator*() const
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this),
                       "Attempted to dereference a non-dereferenceable list::iterator");
#endif
        return __ptr_->__value_;
    }
    _LIBCPP_INLINE_VISIBILITY
    pointer operator->() const
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this),
                       "Attempted to dereference a non-dereferenceable list::iterator");
#endif
        return pointer_traits<pointer>::pointer_to(__ptr_->__value_);
    }

    _LIBCPP_INLINE_VISIBILITY
    __list_iterator& operator++()
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this),
                       "Attempted to increment non-incrementable list::iterator");
#endif
        __ptr_ = __ptr_->__next_;
        return *this;
    }
    _LIBCPP_INLINE_VISIBILITY
    __list_iterator operator++(int) {__list_iterator __t(*this); ++(*this); return __t;}

    _LIBCPP_INLINE_VISIBILITY
    __list_iterator& operator--()
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        _LIBCPP_ASSERT(__get_const_db()->__decrementable(this),
                       "Attempted to decrement non-decrementable list::iterator");
#endif
        __ptr_ = __ptr_->__prev_;
        return *this;
    }
    _LIBCPP_INLINE_VISIBILITY
    __list_iterator operator--(int) {__list_iterator __t(*this); --(*this); return __t;}

    friend _LIBCPP_INLINE_VISIBILITY
    bool operator==(const __list_iterator& __x, const __list_iterator& __y)
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        _LIBCPP_ASSERT(__get_const_db()->__comparable(&__x, &__y),
                       "Attempted to compare non-comparable list::iterator");
#endif
        return __x.__ptr_ == __y.__ptr_;
    }
    friend _LIBCPP_INLINE_VISIBILITY
     bool operator!=(const __list_iterator& __x, const __list_iterator& __y)
        {return !(__x == __y);}
};

template <class _Tp, class _VoidPtr>
class _LIBCPP_TYPE_VIS __list_const_iterator
{
    typedef typename pointer_traits<_VoidPtr>::template
#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
        rebind<__list_node<_Tp, _VoidPtr> > __node_pointer;
#else
        rebind<__list_node<_Tp, _VoidPtr> >::other __node_pointer;
#endif

    __node_pointer __ptr_;

#if _LIBCPP_DEBUG_LEVEL >= 2
    _LIBCPP_INLINE_VISIBILITY
    explicit __list_const_iterator(__node_pointer __p, const void* __c) _NOEXCEPT
        : __ptr_(__p)
    {
        __get_db()->__insert_ic(this, __c);
    }
#else
    _LIBCPP_INLINE_VISIBILITY
    explicit __list_const_iterator(__node_pointer __p) _NOEXCEPT : __ptr_(__p) {}
#endif

    template<class, class> friend class list;
    template<class, class> friend class __list_imp;
public:
    typedef bidirectional_iterator_tag       iterator_category;
    typedef _Tp                              value_type;
    typedef const value_type&                reference;
    typedef typename pointer_traits<_VoidPtr>::template
#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
            rebind<const value_type>
#else
            rebind<const value_type>::other
#endif
                                             pointer;
    typedef typename pointer_traits<pointer>::difference_type difference_type;

    _LIBCPP_INLINE_VISIBILITY
    __list_const_iterator() _NOEXCEPT
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        __get_db()->__insert_i(this);
#endif
    }
    _LIBCPP_INLINE_VISIBILITY
    __list_const_iterator(const __list_iterator<_Tp, _VoidPtr>& __p) _NOEXCEPT
        : __ptr_(__p.__ptr_)
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        __get_db()->__iterator_copy(this, &__p);
#endif
    }

#if _LIBCPP_DEBUG_LEVEL >= 2

    _LIBCPP_INLINE_VISIBILITY
    __list_const_iterator(const __list_const_iterator& __p)
        : __ptr_(__p.__ptr_)
    {
        __get_db()->__iterator_copy(this, &__p);
    }

    _LIBCPP_INLINE_VISIBILITY
    ~__list_const_iterator()
    {
        __get_db()->__erase_i(this);
    }

    _LIBCPP_INLINE_VISIBILITY
    __list_const_iterator& operator=(const __list_const_iterator& __p)
    {
        if (this != &__p)
        {
            __get_db()->__iterator_copy(this, &__p);
            __ptr_ = __p.__ptr_;
        }
        return *this;
    }

#endif  // _LIBCPP_DEBUG_LEVEL >= 2
    _LIBCPP_INLINE_VISIBILITY
    reference operator*() const
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this),
                       "Attempted to dereference a non-dereferenceable list::const_iterator");
#endif
        return __ptr_->__value_;
    }
    _LIBCPP_INLINE_VISIBILITY
    pointer operator->() const
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this),
                       "Attempted to dereference a non-dereferenceable list::iterator");
#endif
        return pointer_traits<pointer>::pointer_to(__ptr_->__value_);
    }

    _LIBCPP_INLINE_VISIBILITY
    __list_const_iterator& operator++()
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this),
                       "Attempted to increment non-incrementable list::const_iterator");
#endif
        __ptr_ = __ptr_->__next_;
        return *this;
    }
    _LIBCPP_INLINE_VISIBILITY
    __list_const_iterator operator++(int) {__list_const_iterator __t(*this); ++(*this); return __t;}

    _LIBCPP_INLINE_VISIBILITY
    __list_const_iterator& operator--()
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        _LIBCPP_ASSERT(__get_const_db()->__decrementable(this),
                       "Attempted to decrement non-decrementable list::const_iterator");
#endif
        __ptr_ = __ptr_->__prev_;
        return *this;
    }
    _LIBCPP_INLINE_VISIBILITY
    __list_const_iterator operator--(int) {__list_const_iterator __t(*this); --(*this); return __t;}

    friend _LIBCPP_INLINE_VISIBILITY
    bool operator==(const __list_const_iterator& __x, const __list_const_iterator& __y)
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        _LIBCPP_ASSERT(__get_const_db()->__comparable(&__x, &__y),
                       "Attempted to compare non-comparable list::const_iterator");
#endif
        return __x.__ptr_ == __y.__ptr_;
    }
    friend _LIBCPP_INLINE_VISIBILITY
    bool operator!=(const __list_const_iterator& __x, const __list_const_iterator& __y)
        {return !(__x == __y);}
};

template <class _Tp, class _Alloc>
class __list_imp
{
    __list_imp(const __list_imp&);
    __list_imp& operator=(const __list_imp&);
protected:
    typedef _Tp                                                     value_type;
    typedef _Alloc                                                  allocator_type;
    typedef allocator_traits<allocator_type>                        __alloc_traits;
    typedef typename __alloc_traits::size_type                      size_type;
    typedef typename __alloc_traits::void_pointer                   __void_pointer;
    typedef __list_iterator<value_type, __void_pointer>             iterator;
    typedef __list_const_iterator<value_type, __void_pointer>       const_iterator;
    typedef __list_node_base<value_type, __void_pointer>            __node_base;
    typedef __list_node<value_type, __void_pointer>                 __node;
    typedef typename __alloc_traits::template
#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
                rebind_alloc<__node>
#else
                rebind_alloc<__node>::other
#endif
                                                                     __node_allocator;
    typedef allocator_traits<__node_allocator>                       __node_alloc_traits;
    typedef typename __node_alloc_traits::pointer                    __node_pointer;
    typedef typename __node_alloc_traits::pointer                    __node_const_pointer;
    typedef typename __alloc_traits::pointer                         pointer;
    typedef typename __alloc_traits::const_pointer                   const_pointer;
    typedef typename __alloc_traits::difference_type                 difference_type;

    typedef typename __alloc_traits::template
#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
                rebind_alloc<__node_base>
#else
                rebind_alloc<__node_base>::other
#endif
                                                                     __node_base_allocator;
    typedef typename allocator_traits<__node_base_allocator>::pointer __node_base_pointer;

    __node_base __end_;
    __compressed_pair<size_type, __node_allocator> __size_alloc_;

    _LIBCPP_INLINE_VISIBILITY
          size_type& __sz() _NOEXCEPT {return __size_alloc_.first();}
    _LIBCPP_INLINE_VISIBILITY
    const size_type& __sz() const _NOEXCEPT
        {return __size_alloc_.first();}
    _LIBCPP_INLINE_VISIBILITY
          __node_allocator& __node_alloc() _NOEXCEPT
          {return __size_alloc_.second();}
    _LIBCPP_INLINE_VISIBILITY
    const __node_allocator& __node_alloc() const _NOEXCEPT
        {return __size_alloc_.second();}

    static void __unlink_nodes(__node_pointer __f, __node_pointer __l) _NOEXCEPT;

    __list_imp()
        _NOEXCEPT_(is_nothrow_default_constructible<__node_allocator>::value);
    __list_imp(const allocator_type& __a);
    ~__list_imp();
    void clear() _NOEXCEPT;
    _LIBCPP_INLINE_VISIBILITY
    bool empty() const _NOEXCEPT {return __sz() == 0;}

    _LIBCPP_INLINE_VISIBILITY
    iterator begin() _NOEXCEPT
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        return iterator(__end_.__next_, this);
#else
        return iterator(__end_.__next_);
#endif
    }
    _LIBCPP_INLINE_VISIBILITY
    const_iterator begin() const  _NOEXCEPT
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        return const_iterator(__end_.__next_, this);
#else
        return const_iterator(__end_.__next_);
#endif
    }
    _LIBCPP_INLINE_VISIBILITY
    iterator end() _NOEXCEPT
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        return iterator(static_cast<__node_pointer>(
                pointer_traits<__node_base_pointer>::pointer_to(__end_)), this);
#else
        return iterator(static_cast<__node_pointer>(
                      pointer_traits<__node_base_pointer>::pointer_to(__end_)));
#endif
    }
    _LIBCPP_INLINE_VISIBILITY
    const_iterator end() const _NOEXCEPT
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        return const_iterator(static_cast<__node_const_pointer>(
        pointer_traits<__node_base_pointer>::pointer_to(const_cast<__node_base&>(__end_))), this);
#else
        return const_iterator(static_cast<__node_const_pointer>(
        pointer_traits<__node_base_pointer>::pointer_to(const_cast<__node_base&>(__end_))));
#endif
    }

    void swap(__list_imp& __c)
        _NOEXCEPT_(!__node_alloc_traits::propagate_on_container_swap::value ||
                   __is_nothrow_swappable<__node_allocator>::value);

    _LIBCPP_INLINE_VISIBILITY
    void __copy_assign_alloc(const __list_imp& __c)
        {__copy_assign_alloc(__c, integral_constant<bool,
                      __node_alloc_traits::propagate_on_container_copy_assignment::value>());}

    _LIBCPP_INLINE_VISIBILITY
    void __move_assign_alloc(__list_imp& __c)
        _NOEXCEPT_(
            !__node_alloc_traits::propagate_on_container_move_assignment::value ||
            is_nothrow_move_assignable<__node_allocator>::value)
        {__move_assign_alloc(__c, integral_constant<bool,
                      __node_alloc_traits::propagate_on_container_move_assignment::value>());}

private:
    _LIBCPP_INLINE_VISIBILITY
    static void __swap_alloc(__node_allocator& __x, __node_allocator& __y)
        _NOEXCEPT_(!__node_alloc_traits::propagate_on_container_swap::value ||
                   __is_nothrow_swappable<__node_allocator>::value)
        {__swap_alloc(__x, __y, integral_constant<bool,
                      __node_alloc_traits::propagate_on_container_swap::value>());}
    _LIBCPP_INLINE_VISIBILITY
    static void __swap_alloc(__node_allocator& __x, __node_allocator& __y, true_type)
        _NOEXCEPT_(__is_nothrow_swappable<__node_allocator>::value)
        {
            using _VSTD::swap;
            swap(__x, __y);
        }
    _LIBCPP_INLINE_VISIBILITY
    static void __swap_alloc(__node_allocator& __x, __node_allocator& __y, false_type)
        _NOEXCEPT
        {}

    _LIBCPP_INLINE_VISIBILITY
    void __copy_assign_alloc(const __list_imp& __c, true_type)
        {
            if (__node_alloc() != __c.__node_alloc())
                clear();
            __node_alloc() = __c.__node_alloc();
        }

    _LIBCPP_INLINE_VISIBILITY
    void __copy_assign_alloc(const __list_imp& __c, false_type)
        {}

    _LIBCPP_INLINE_VISIBILITY
    void __move_assign_alloc(__list_imp& __c, true_type)
        _NOEXCEPT_(is_nothrow_move_assignable<__node_allocator>::value)
        {
            __node_alloc() = _VSTD::move(__c.__node_alloc());
        }

    _LIBCPP_INLINE_VISIBILITY
    void __move_assign_alloc(__list_imp& __c, false_type)
        _NOEXCEPT
        {}
};

// Unlink nodes [__f, __l]
template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
void
__list_imp<_Tp, _Alloc>::__unlink_nodes(__node_pointer __f, __node_pointer __l)
    _NOEXCEPT
{
    __f->__prev_->__next_ = __l->__next_;
    __l->__next_->__prev_ = __f->__prev_;
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
__list_imp<_Tp, _Alloc>::__list_imp()
        _NOEXCEPT_(is_nothrow_default_constructible<__node_allocator>::value)
    : __size_alloc_(0)
{
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
__list_imp<_Tp, _Alloc>::__list_imp(const allocator_type& __a)
    : __size_alloc_(0, __node_allocator(__a))
{
}

template <class _Tp, class _Alloc>
__list_imp<_Tp, _Alloc>::~__list_imp()
{
    clear();
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__erase_c(this);
#endif
}

template <class _Tp, class _Alloc>
void
__list_imp<_Tp, _Alloc>::clear() _NOEXCEPT
{
    if (!empty())
    {
        __node_allocator& __na = __node_alloc();
        __node_pointer __f = __end_.__next_;
        __node_pointer __l = static_cast<__node_pointer>(
                       pointer_traits<__node_base_pointer>::pointer_to(__end_));
        __unlink_nodes(__f, __l->__prev_);
        __sz() = 0;
        while (__f != __l)
        {
            __node_pointer __n = __f;
            __f = __f->__next_;
            __node_alloc_traits::destroy(__na, _VSTD::addressof(__n->__value_));
            __node_alloc_traits::deallocate(__na, __n, 1);
        }
#if _LIBCPP_DEBUG_LEVEL >= 2
        __c_node* __c = __get_db()->__find_c_and_lock(this);
        for (__i_node** __p = __c->end_; __p != __c->beg_; )
        {
            --__p;
            const_iterator* __i = static_cast<const_iterator*>((*__p)->__i_);
            if (__i->__ptr_ != __l)
            {
                (*__p)->__c_ = nullptr;
                if (--__c->end_ != __p)
                    memmove(__p, __p+1, (__c->end_ - __p)*sizeof(__i_node*));
            }
        }
        __get_db()->unlock();
#endif
    }
}

template <class _Tp, class _Alloc>
void
__list_imp<_Tp, _Alloc>::swap(__list_imp& __c)
        _NOEXCEPT_(!__node_alloc_traits::propagate_on_container_swap::value ||
                   __is_nothrow_swappable<__node_allocator>::value)
{
    _LIBCPP_ASSERT(__alloc_traits::propagate_on_container_swap::value ||
                   this->__node_alloc() == __c.__node_alloc(),
                   "list::swap: Either propagate_on_container_swap must be true"
                   " or the allocators must compare equal");
    using _VSTD::swap;
    __swap_alloc(__node_alloc(), __c.__node_alloc());
    swap(__sz(), __c.__sz());
    swap(__end_, __c.__end_);
    if (__sz() == 0)
        __end_.__next_ = __end_.__prev_ = static_cast<__node_pointer>(
                       pointer_traits<__node_base_pointer>::pointer_to(__end_));
    else
        __end_.__prev_->__next_ = __end_.__next_->__prev_
                                = static_cast<__node_pointer>(
                       pointer_traits<__node_base_pointer>::pointer_to(__end_));
    if (__c.__sz() == 0)
        __c.__end_.__next_ = __c.__end_.__prev_
                           = static_cast<__node_pointer>(
                       pointer_traits<__node_base_pointer>::pointer_to(__c.__end_));
    else
        __c.__end_.__prev_->__next_ = __c.__end_.__next_->__prev_
                                    = static_cast<__node_pointer>(
                       pointer_traits<__node_base_pointer>::pointer_to(__c.__end_));
#if _LIBCPP_DEBUG_LEVEL >= 2
    __libcpp_db* __db = __get_db();
    __c_node* __cn1 = __db->__find_c_and_lock(this);
    __c_node* __cn2 = __db->__find_c(&__c);
    std::swap(__cn1->beg_, __cn2->beg_);
    std::swap(__cn1->end_, __cn2->end_);
    std::swap(__cn1->cap_, __cn2->cap_);
    for (__i_node** __p = __cn1->end_; __p != __cn1->beg_;)
    {
        --__p;
        const_iterator* __i = static_cast<const_iterator*>((*__p)->__i_);
        if (__i->__ptr_ == static_cast<__node_pointer>(
                       pointer_traits<__node_base_pointer>::pointer_to(__c.__end_)))
        {
            __cn2->__add(*__p);
            if (--__cn1->end_ != __p)
                memmove(__p, __p+1, (__cn1->end_ - __p)*sizeof(__i_node*));
        }
        else
            (*__p)->__c_ = __cn1;
    }
    for (__i_node** __p = __cn2->end_; __p != __cn2->beg_;)
    {
        --__p;
        const_iterator* __i = static_cast<const_iterator*>((*__p)->__i_);
        if (__i->__ptr_ == static_cast<__node_pointer>(
                       pointer_traits<__node_base_pointer>::pointer_to(__end_)))
        {
            __cn1->__add(*__p);
            if (--__cn2->end_ != __p)
                memmove(__p, __p+1, (__cn2->end_ - __p)*sizeof(__i_node*));
        }
        else
            (*__p)->__c_ = __cn2;
    }
    __db->unlock();
#endif
}

template <class _Tp, class _Alloc = allocator<_Tp> >
class _LIBCPP_TYPE_VIS list
    : private __list_imp<_Tp, _Alloc>
{
    typedef __list_imp<_Tp, _Alloc> base;
    typedef typename base::__node              __node;
    typedef typename base::__node_allocator    __node_allocator;
    typedef typename base::__node_pointer      __node_pointer;
    typedef typename base::__node_alloc_traits __node_alloc_traits;
    typedef typename base::__node_base         __node_base;
    typedef typename base::__node_base_pointer __node_base_pointer;

public:
    typedef _Tp                                      value_type;
    typedef _Alloc                                   allocator_type;
    static_assert((is_same<value_type, typename allocator_type::value_type>::value),
                  "Invalid allocator::value_type");
    typedef value_type&                              reference;
    typedef const value_type&                        const_reference;
    typedef typename base::pointer                   pointer;
    typedef typename base::const_pointer             const_pointer;
    typedef typename base::size_type                 size_type;
    typedef typename base::difference_type           difference_type;
    typedef typename base::iterator                  iterator;
    typedef typename base::const_iterator            const_iterator;
    typedef _VSTD::reverse_iterator<iterator>         reverse_iterator;
    typedef _VSTD::reverse_iterator<const_iterator>   const_reverse_iterator;

    _LIBCPP_INLINE_VISIBILITY
    list()
        _NOEXCEPT_(is_nothrow_default_constructible<__node_allocator>::value)
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        __get_db()->__insert_c(this);
#endif
    }
    _LIBCPP_INLINE_VISIBILITY
    list(const allocator_type& __a) : base(__a)
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        __get_db()->__insert_c(this);
#endif
    }
    list(size_type __n);
    list(size_type __n, const value_type& __x);
    list(size_type __n, const value_type& __x, const allocator_type& __a);
    template <class _InpIter>
        list(_InpIter __f, _InpIter __l,
             typename enable_if<__is_input_iterator<_InpIter>::value>::type* = 0);
    template <class _InpIter>
        list(_InpIter __f, _InpIter __l, const allocator_type& __a,
             typename enable_if<__is_input_iterator<_InpIter>::value>::type* = 0);

    list(const list& __c);
    list(const list& __c, const allocator_type& __a);
    list& operator=(const list& __c);
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
    list(initializer_list<value_type> __il);
    list(initializer_list<value_type> __il, const allocator_type& __a);
#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    list(list&& __c)
        _NOEXCEPT_(is_nothrow_move_constructible<__node_allocator>::value);
    list(list&& __c, const allocator_type& __a);
    list& operator=(list&& __c)
        _NOEXCEPT_(
            __node_alloc_traits::propagate_on_container_move_assignment::value &&
            is_nothrow_move_assignable<__node_allocator>::value);
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
    _LIBCPP_INLINE_VISIBILITY
    list& operator=(initializer_list<value_type> __il)
        {assign(__il.begin(), __il.end()); return *this;}
#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

    template <class _InpIter>
        void assign(_InpIter __f, _InpIter __l,
             typename enable_if<__is_input_iterator<_InpIter>::value>::type* = 0);
    void assign(size_type __n, const value_type& __x);
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
    _LIBCPP_INLINE_VISIBILITY
    void assign(initializer_list<value_type> __il)
        {assign(__il.begin(), __il.end());}
#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

    allocator_type get_allocator() const _NOEXCEPT;

    _LIBCPP_INLINE_VISIBILITY
    size_type size() const _NOEXCEPT     {return base::__sz();}
    _LIBCPP_INLINE_VISIBILITY
    bool empty() const _NOEXCEPT         {return base::empty();}
    _LIBCPP_INLINE_VISIBILITY
    size_type max_size() const _NOEXCEPT
        {return numeric_limits<difference_type>::max();}

    _LIBCPP_INLINE_VISIBILITY
          iterator begin() _NOEXCEPT        {return base::begin();}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator begin()  const _NOEXCEPT {return base::begin();}
    _LIBCPP_INLINE_VISIBILITY
          iterator end() _NOEXCEPT          {return base::end();}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator end()    const _NOEXCEPT {return base::end();}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator cbegin() const _NOEXCEPT {return base::begin();}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator cend()   const _NOEXCEPT {return base::end();}

    _LIBCPP_INLINE_VISIBILITY
          reverse_iterator rbegin() _NOEXCEPT
            {return       reverse_iterator(end());}
    _LIBCPP_INLINE_VISIBILITY
    const_reverse_iterator rbegin()  const _NOEXCEPT
        {return const_reverse_iterator(end());}
    _LIBCPP_INLINE_VISIBILITY
          reverse_iterator rend() _NOEXCEPT
            {return       reverse_iterator(begin());}
    _LIBCPP_INLINE_VISIBILITY
    const_reverse_iterator rend()    const _NOEXCEPT
        {return const_reverse_iterator(begin());}
    _LIBCPP_INLINE_VISIBILITY
    const_reverse_iterator crbegin() const _NOEXCEPT
        {return const_reverse_iterator(end());}
    _LIBCPP_INLINE_VISIBILITY
    const_reverse_iterator crend()   const _NOEXCEPT
        {return const_reverse_iterator(begin());}

    _LIBCPP_INLINE_VISIBILITY
    reference front()
    {
        _LIBCPP_ASSERT(!empty(), "list::front called on empty list");
        return base::__end_.__next_->__value_;
    }
    _LIBCPP_INLINE_VISIBILITY
    const_reference front() const
    {
        _LIBCPP_ASSERT(!empty(), "list::front called on empty list");
        return base::__end_.__next_->__value_;
    }
    _LIBCPP_INLINE_VISIBILITY
    reference back()
    {
        _LIBCPP_ASSERT(!empty(), "list::back called on empty list");
        return base::__end_.__prev_->__value_;
    }
    _LIBCPP_INLINE_VISIBILITY
    const_reference back() const
    {
        _LIBCPP_ASSERT(!empty(), "list::back called on empty list");
        return base::__end_.__prev_->__value_;
    }

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    void push_front(value_type&& __x);
    void push_back(value_type&& __x);
#ifndef _LIBCPP_HAS_NO_VARIADICS
    template <class... _Args>
       void emplace_front(_Args&&... __args);
    template <class... _Args>
        void emplace_back(_Args&&... __args);
    template <class... _Args>
        iterator emplace(const_iterator __p, _Args&&... __args);
#endif  // _LIBCPP_HAS_NO_VARIADICS
    iterator insert(const_iterator __p, value_type&& __x);
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

    void push_front(const value_type& __x);
    void push_back(const value_type& __x);

    iterator insert(const_iterator __p, const value_type& __x);
    iterator insert(const_iterator __p, size_type __n, const value_type& __x);
    template <class _InpIter>
        iterator insert(const_iterator __p, _InpIter __f, _InpIter __l,
             typename enable_if<__is_input_iterator<_InpIter>::value>::type* = 0);
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
    _LIBCPP_INLINE_VISIBILITY
    iterator insert(const_iterator __p, initializer_list<value_type> __il)
        {return insert(__p, __il.begin(), __il.end());}
#endif   // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

    _LIBCPP_INLINE_VISIBILITY
    void swap(list& __c)
        _NOEXCEPT_(!__node_alloc_traits::propagate_on_container_swap::value ||
                   __is_nothrow_swappable<__node_allocator>::value)
        {base::swap(__c);}
    _LIBCPP_INLINE_VISIBILITY
    void clear() _NOEXCEPT {base::clear();}

    void pop_front();
    void pop_back();

    iterator erase(const_iterator __p);
    iterator erase(const_iterator __f, const_iterator __l);

    void resize(size_type __n);
    void resize(size_type __n, const value_type& __x);

    void splice(const_iterator __p, list& __c);
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    _LIBCPP_INLINE_VISIBILITY
    void splice(const_iterator __p, list&& __c) {splice(__p, __c);}
#endif
    void splice(const_iterator __p, list& __c, const_iterator __i);
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    _LIBCPP_INLINE_VISIBILITY
    void splice(const_iterator __p, list&& __c, const_iterator __i)
        {splice(__p, __c, __i);}
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
    void splice(const_iterator __p, list& __c, const_iterator __f, const_iterator __l);
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    _LIBCPP_INLINE_VISIBILITY
    void splice(const_iterator __p, list&& __c, const_iterator __f, const_iterator __l)
        {splice(__p, __c, __f, __l);}
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

    void remove(const value_type& __x);
    template <class _Pred> void remove_if(_Pred __pred);
    void unique();
    template <class _BinaryPred>
        void unique(_BinaryPred __binary_pred);
    void merge(list& __c);
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    _LIBCPP_INLINE_VISIBILITY
    void merge(list&& __c) {merge(__c);}
#endif
    template <class _Comp>
        void merge(list& __c, _Comp __comp);
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    template <class _Comp>
    _LIBCPP_INLINE_VISIBILITY
        void merge(list&& __c, _Comp __comp) {merge(__c, __comp);}
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
    void sort();
    template <class _Comp>
        void sort(_Comp __comp);

    void reverse() _NOEXCEPT;

    bool __invariants() const;

#if _LIBCPP_DEBUG_LEVEL >= 2

    bool __dereferenceable(const const_iterator* __i) const;
    bool __decrementable(const const_iterator* __i) const;
    bool __addable(const const_iterator* __i, ptrdiff_t __n) const;
    bool __subscriptable(const const_iterator* __i, ptrdiff_t __n) const;

#endif  // _LIBCPP_DEBUG_LEVEL >= 2

private:
    static void __link_nodes(__node_pointer __p, __node_pointer __f, __node_pointer __l);
    iterator __iterator(size_type __n);
    template <class _Comp>
        static iterator __sort(iterator __f1, iterator __e2, size_type __n, _Comp& __comp);

    void __move_assign(list& __c, true_type)
        _NOEXCEPT_(is_nothrow_move_assignable<__node_allocator>::value);
    void __move_assign(list& __c, false_type);
};

// Link in nodes [__f, __l] just prior to __p
template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
void
list<_Tp, _Alloc>::__link_nodes(__node_pointer __p, __node_pointer __f, __node_pointer __l)
{
    __p->__prev_->__next_ = __f;
    __f->__prev_ = __p->__prev_;
    __p->__prev_ = __l;
    __l->__next_ = __p;
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
typename list<_Tp, _Alloc>::iterator
list<_Tp, _Alloc>::__iterator(size_type __n)
{
    return __n <= base::__sz() / 2 ? _VSTD::next(begin(), __n)
                                   : _VSTD::prev(end(), base::__sz() - __n);
}

template <class _Tp, class _Alloc>
list<_Tp, _Alloc>::list(size_type __n)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
    for (; __n > 0; --__n)
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
        emplace_back();
#else
        push_back(value_type());
#endif
}

template <class _Tp, class _Alloc>
list<_Tp, _Alloc>::list(size_type __n, const value_type& __x)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
    for (; __n > 0; --__n)
        push_back(__x);
}

template <class _Tp, class _Alloc>
list<_Tp, _Alloc>::list(size_type __n, const value_type& __x, const allocator_type& __a)
    : base(__a)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
    for (; __n > 0; --__n)
        push_back(__x);
}

template <class _Tp, class _Alloc>
template <class _InpIter>
list<_Tp, _Alloc>::list(_InpIter __f, _InpIter __l,
                        typename enable_if<__is_input_iterator<_InpIter>::value>::type*)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
    for (; __f != __l; ++__f)
        push_back(*__f);
}

template <class _Tp, class _Alloc>
template <class _InpIter>
list<_Tp, _Alloc>::list(_InpIter __f, _InpIter __l, const allocator_type& __a,
                        typename enable_if<__is_input_iterator<_InpIter>::value>::type*)
    : base(__a)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
    for (; __f != __l; ++__f)
        push_back(*__f);
}

template <class _Tp, class _Alloc>
list<_Tp, _Alloc>::list(const list& __c)
    : base(allocator_type(
           __node_alloc_traits::select_on_container_copy_construction(
                __c.__node_alloc())))
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
    for (const_iterator __i = __c.begin(), __e = __c.end(); __i != __e; ++__i)
        push_back(*__i);
}

template <class _Tp, class _Alloc>
list<_Tp, _Alloc>::list(const list& __c, const allocator_type& __a)
    : base(__a)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
    for (const_iterator __i = __c.begin(), __e = __c.end(); __i != __e; ++__i)
        push_back(*__i);
}

#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

template <class _Tp, class _Alloc>
list<_Tp, _Alloc>::list(initializer_list<value_type> __il, const allocator_type& __a)
    : base(__a)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
    for (typename initializer_list<value_type>::const_iterator __i = __il.begin(),
            __e = __il.end(); __i != __e; ++__i)
        push_back(*__i);
}

template <class _Tp, class _Alloc>
list<_Tp, _Alloc>::list(initializer_list<value_type> __il)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
    for (typename initializer_list<value_type>::const_iterator __i = __il.begin(),
            __e = __il.end(); __i != __e; ++__i)
        push_back(*__i);
}

#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
list<_Tp, _Alloc>&
list<_Tp, _Alloc>::operator=(const list& __c)
{
    if (this != &__c)
    {
        base::__copy_assign_alloc(__c);
        assign(__c.begin(), __c.end());
    }
    return *this;
}

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
list<_Tp, _Alloc>::list(list&& __c)
    _NOEXCEPT_(is_nothrow_move_constructible<__node_allocator>::value)
    : base(allocator_type(_VSTD::move(__c.__node_alloc())))
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
    splice(end(), __c);
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
list<_Tp, _Alloc>::list(list&& __c, const allocator_type& __a)
    : base(__a)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
    if (__a == __c.get_allocator())
        splice(end(), __c);
    else
    {
        typedef move_iterator<iterator> _Ip;
        assign(_Ip(__c.begin()), _Ip(__c.end()));
    }
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
list<_Tp, _Alloc>&
list<_Tp, _Alloc>::operator=(list&& __c)
        _NOEXCEPT_(
            __node_alloc_traits::propagate_on_container_move_assignment::value &&
            is_nothrow_move_assignable<__node_allocator>::value)
{
    __move_assign(__c, integral_constant<bool,
          __node_alloc_traits::propagate_on_container_move_assignment::value>());
    return *this;
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::__move_assign(list& __c, false_type)
{
    if (base::__node_alloc() != __c.__node_alloc())
    {
        typedef move_iterator<iterator> _Ip;
        assign(_Ip(__c.begin()), _Ip(__c.end()));
    }
    else
        __move_assign(__c, true_type());
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::__move_assign(list& __c, true_type)
        _NOEXCEPT_(is_nothrow_move_assignable<__node_allocator>::value)
{
    clear();
    base::__move_assign_alloc(__c);
    splice(end(), __c);
}

#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Tp, class _Alloc>
template <class _InpIter>
void
list<_Tp, _Alloc>::assign(_InpIter __f, _InpIter __l,
                          typename enable_if<__is_input_iterator<_InpIter>::value>::type*)
{
    iterator __i = begin();
    iterator __e = end();
    for (; __f != __l && __i != __e; ++__f, ++__i)
        *__i = *__f;
    if (__i == __e)
        insert(__e, __f, __l);
    else
        erase(__i, __e);
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::assign(size_type __n, const value_type& __x)
{
    iterator __i = begin();
    iterator __e = end();
    for (; __n > 0 && __i != __e; --__n, ++__i)
        *__i = __x;
    if (__i == __e)
        insert(__e, __n, __x);
    else
        erase(__i, __e);
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
_Alloc
list<_Tp, _Alloc>::get_allocator() const _NOEXCEPT
{
    return allocator_type(base::__node_alloc());
}

template <class _Tp, class _Alloc>
typename list<_Tp, _Alloc>::iterator
list<_Tp, _Alloc>::insert(const_iterator __p, const value_type& __x)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__p) == this,
        "list::insert(iterator, x) called with an iterator not"
        " referring to this list");
#endif
    __node_allocator& __na = base::__node_alloc();
    typedef __allocator_destructor<__node_allocator> _Dp;
    unique_ptr<__node, _Dp> __hold(__node_alloc_traits::allocate(__na, 1), _Dp(__na, 1));
    __hold->__prev_ = 0;
    __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), __x);
    __link_nodes(__p.__ptr_, __hold.get(), __hold.get());
    ++base::__sz();
#if _LIBCPP_DEBUG_LEVEL >= 2
    return iterator(__hold.release(), this);
#else
    return iterator(__hold.release());
#endif
}

template <class _Tp, class _Alloc>
typename list<_Tp, _Alloc>::iterator
list<_Tp, _Alloc>::insert(const_iterator __p, size_type __n, const value_type& __x)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__p) == this,
        "list::insert(iterator, n, x) called with an iterator not"
        " referring to this list");
    iterator __r(__p.__ptr_, this);
#else
    iterator __r(__p.__ptr_);
#endif
    if (__n > 0)
    {
        size_type __ds = 0;
        __node_allocator& __na = base::__node_alloc();
        typedef __allocator_destructor<__node_allocator> _Dp;
        unique_ptr<__node, _Dp> __hold(__node_alloc_traits::allocate(__na, 1), _Dp(__na, 1));
        __hold->__prev_ = 0;
        __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), __x);
        ++__ds;
#if _LIBCPP_DEBUG_LEVEL >= 2
        __r = iterator(__hold.get(), this);
#else
        __r = iterator(__hold.get());
#endif
        __hold.release();
        iterator __e = __r;
#ifndef _LIBCPP_NO_EXCEPTIONS
        try
        {
#endif  // _LIBCPP_NO_EXCEPTIONS
            for (--__n; __n != 0; --__n, ++__e, ++__ds)
            {
                __hold.reset(__node_alloc_traits::allocate(__na, 1));
                __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), __x);
                __e.__ptr_->__next_ = __hold.get();
                __hold->__prev_ = __e.__ptr_;
                __hold.release();
            }
#ifndef _LIBCPP_NO_EXCEPTIONS
        }
        catch (...)
        {
            while (true)
            {
                __node_alloc_traits::destroy(__na, _VSTD::addressof(*__e));
                __node_pointer __prev = __e.__ptr_->__prev_;
                __node_alloc_traits::deallocate(__na, __e.__ptr_, 1);
                if (__prev == 0)
                    break;
#if _LIBCPP_DEBUG_LEVEL >= 2
                __e = iterator(__prev, this);
#else
                __e = iterator(__prev);
#endif
            }
            throw;
        }
#endif  // _LIBCPP_NO_EXCEPTIONS
        __link_nodes(__p.__ptr_, __r.__ptr_, __e.__ptr_);
        base::__sz() += __ds;
    }
    return __r;
}

template <class _Tp, class _Alloc>
template <class _InpIter>
typename list<_Tp, _Alloc>::iterator
list<_Tp, _Alloc>::insert(const_iterator __p, _InpIter __f, _InpIter __l,
             typename enable_if<__is_input_iterator<_InpIter>::value>::type*)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__p) == this,
        "list::insert(iterator, range) called with an iterator not"
        " referring to this list");
    iterator __r(__p.__ptr_, this);
#else
    iterator __r(__p.__ptr_);
#endif
    if (__f != __l)
    {
        size_type __ds = 0;
        __node_allocator& __na = base::__node_alloc();
        typedef __allocator_destructor<__node_allocator> _Dp;
        unique_ptr<__node, _Dp> __hold(__node_alloc_traits::allocate(__na, 1), _Dp(__na, 1));
        __hold->__prev_ = 0;
        __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), *__f);
        ++__ds;
#if _LIBCPP_DEBUG_LEVEL >= 2
        __r = iterator(__hold.get(), this);
#else
        __r = iterator(__hold.get());
#endif
        __hold.release();
        iterator __e = __r;
#ifndef _LIBCPP_NO_EXCEPTIONS
        try
        {
#endif  // _LIBCPP_NO_EXCEPTIONS
            for (++__f; __f != __l; ++__f, ++__e, ++__ds)
            {
                __hold.reset(__node_alloc_traits::allocate(__na, 1));
                __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), *__f);
                __e.__ptr_->__next_ = __hold.get();
                __hold->__prev_ = __e.__ptr_;
                __hold.release();
            }
#ifndef _LIBCPP_NO_EXCEPTIONS
        }
        catch (...)
        {
            while (true)
            {
                __node_alloc_traits::destroy(__na, _VSTD::addressof(*__e));
                __node_pointer __prev = __e.__ptr_->__prev_;
                __node_alloc_traits::deallocate(__na, __e.__ptr_, 1);
                if (__prev == 0)
                    break;
#if _LIBCPP_DEBUG_LEVEL >= 2
                __e = iterator(__prev, this);
#else
                __e = iterator(__prev);
#endif
            }
            throw;
        }
#endif  // _LIBCPP_NO_EXCEPTIONS
        __link_nodes(__p.__ptr_, __r.__ptr_, __e.__ptr_);
        base::__sz() += __ds;
    }
    return __r;
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::push_front(const value_type& __x)
{
    __node_allocator& __na = base::__node_alloc();
    typedef __allocator_destructor<__node_allocator> _Dp;
    unique_ptr<__node, _Dp> __hold(__node_alloc_traits::allocate(__na, 1), _Dp(__na, 1));
    __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), __x);
    __link_nodes(base::__end_.__next_, __hold.get(), __hold.get());
    ++base::__sz();
    __hold.release();
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::push_back(const value_type& __x)
{
    __node_allocator& __na = base::__node_alloc();
    typedef __allocator_destructor<__node_allocator> _Dp;
    unique_ptr<__node, _Dp> __hold(__node_alloc_traits::allocate(__na, 1), _Dp(__na, 1));
    __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), __x);
    __link_nodes(static_cast<__node_pointer>(pointer_traits<__node_base_pointer>::
                         pointer_to(base::__end_)), __hold.get(), __hold.get());
    ++base::__sz();
    __hold.release();
}

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::push_front(value_type&& __x)
{
    __node_allocator& __na = base::__node_alloc();
    typedef __allocator_destructor<__node_allocator> _Dp;
    unique_ptr<__node, _Dp> __hold(__node_alloc_traits::allocate(__na, 1), _Dp(__na, 1));
    __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), _VSTD::move(__x));
    __link_nodes(base::__end_.__next_, __hold.get(), __hold.get());
    ++base::__sz();
    __hold.release();
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::push_back(value_type&& __x)
{
    __node_allocator& __na = base::__node_alloc();
    typedef __allocator_destructor<__node_allocator> _Dp;
    unique_ptr<__node, _Dp> __hold(__node_alloc_traits::allocate(__na, 1), _Dp(__na, 1));
    __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), _VSTD::move(__x));
    __link_nodes(static_cast<__node_pointer>(pointer_traits<__node_base_pointer>::
                         pointer_to(base::__end_)), __hold.get(), __hold.get());
    ++base::__sz();
    __hold.release();
}

#ifndef _LIBCPP_HAS_NO_VARIADICS

template <class _Tp, class _Alloc>
template <class... _Args>
void
list<_Tp, _Alloc>::emplace_front(_Args&&... __args)
{
    __node_allocator& __na = base::__node_alloc();
    typedef __allocator_destructor<__node_allocator> _Dp;
    unique_ptr<__node, _Dp> __hold(__node_alloc_traits::allocate(__na, 1), _Dp(__na, 1));
    __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), _VSTD::forward<_Args>(__args)...);
    __link_nodes(base::__end_.__next_, __hold.get(), __hold.get());
    ++base::__sz();
    __hold.release();
}

template <class _Tp, class _Alloc>
template <class... _Args>
void
list<_Tp, _Alloc>::emplace_back(_Args&&... __args)
{
    __node_allocator& __na = base::__node_alloc();
    typedef __allocator_destructor<__node_allocator> _Dp;
    unique_ptr<__node, _Dp> __hold(__node_alloc_traits::allocate(__na, 1), _Dp(__na, 1));
    __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), _VSTD::forward<_Args>(__args)...);
    __link_nodes(static_cast<__node_pointer>(pointer_traits<__node_base_pointer>::
                         pointer_to(base::__end_)), __hold.get(), __hold.get());
    ++base::__sz();
    __hold.release();
}

template <class _Tp, class _Alloc>
template <class... _Args>
typename list<_Tp, _Alloc>::iterator
list<_Tp, _Alloc>::emplace(const_iterator __p, _Args&&... __args)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__p) == this,
        "list::emplace(iterator, args...) called with an iterator not"
        " referring to this list");
#endif
    __node_allocator& __na = base::__node_alloc();
    typedef __allocator_destructor<__node_allocator> _Dp;
    unique_ptr<__node, _Dp> __hold(__node_alloc_traits::allocate(__na, 1), _Dp(__na, 1));
    __hold->__prev_ = 0;
    __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), _VSTD::forward<_Args>(__args)...);
    __link_nodes(__p.__ptr_, __hold.get(), __hold.get());
    ++base::__sz();
#if _LIBCPP_DEBUG_LEVEL >= 2
    return iterator(__hold.release(), this);
#else
    return iterator(__hold.release());
#endif
}

#endif  // _LIBCPP_HAS_NO_VARIADICS

template <class _Tp, class _Alloc>
typename list<_Tp, _Alloc>::iterator
list<_Tp, _Alloc>::insert(const_iterator __p, value_type&& __x)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__p) == this,
        "list::insert(iterator, x) called with an iterator not"
        " referring to this list");
#endif
    __node_allocator& __na = base::__node_alloc();
    typedef __allocator_destructor<__node_allocator> _Dp;
    unique_ptr<__node, _Dp> __hold(__node_alloc_traits::allocate(__na, 1), _Dp(__na, 1));
    __hold->__prev_ = 0;
    __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), _VSTD::move(__x));
    __link_nodes(__p.__ptr_, __hold.get(), __hold.get());
    ++base::__sz();
#if _LIBCPP_DEBUG_LEVEL >= 2
    return iterator(__hold.release(), this);
#else
    return iterator(__hold.release());
#endif
}

#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::pop_front()
{
    _LIBCPP_ASSERT(!empty(), "list::pop_front() called with empty list");
    __node_allocator& __na = base::__node_alloc();
    __node_pointer __n = base::__end_.__next_;
    base::__unlink_nodes(__n, __n);
    --base::__sz();
#if _LIBCPP_DEBUG_LEVEL >= 2
    __c_node* __c = __get_db()->__find_c_and_lock(this);
    for (__i_node** __p = __c->end_; __p != __c->beg_; )
    {
        --__p;
        iterator* __i = static_cast<iterator*>((*__p)->__i_);
        if (__i->__ptr_ == __n)
        {
            (*__p)->__c_ = nullptr;
            if (--__c->end_ != __p)
                memmove(__p, __p+1, (__c->end_ - __p)*sizeof(__i_node*));
        }
    }
    __get_db()->unlock();
#endif
    __node_alloc_traits::destroy(__na, _VSTD::addressof(__n->__value_));
    __node_alloc_traits::deallocate(__na, __n, 1);
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::pop_back()
{
    _LIBCPP_ASSERT(!empty(), "list::pop_back() called with empty list");
    __node_allocator& __na = base::__node_alloc();
    __node_pointer __n = base::__end_.__prev_;
    base::__unlink_nodes(__n, __n);
    --base::__sz();
#if _LIBCPP_DEBUG_LEVEL >= 2
    __c_node* __c = __get_db()->__find_c_and_lock(this);
    for (__i_node** __p = __c->end_; __p != __c->beg_; )
    {
        --__p;
        iterator* __i = static_cast<iterator*>((*__p)->__i_);
        if (__i->__ptr_ == __n)
        {
            (*__p)->__c_ = nullptr;
            if (--__c->end_ != __p)
                memmove(__p, __p+1, (__c->end_ - __p)*sizeof(__i_node*));
        }
    }
    __get_db()->unlock();
#endif
    __node_alloc_traits::destroy(__na, _VSTD::addressof(__n->__value_));
    __node_alloc_traits::deallocate(__na, __n, 1);
}

template <class _Tp, class _Alloc>
typename list<_Tp, _Alloc>::iterator
list<_Tp, _Alloc>::erase(const_iterator __p)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__p) == this,
        "list::erase(iterator) called with an iterator not"
        " referring to this list");
#endif
    _LIBCPP_ASSERT(__p != end(),
        "list::erase(iterator) called with a non-dereferenceable iterator");
    __node_allocator& __na = base::__node_alloc();
    __node_pointer __n = __p.__ptr_;
    __node_pointer __r = __n->__next_;
    base::__unlink_nodes(__n, __n);
    --base::__sz();
#if _LIBCPP_DEBUG_LEVEL >= 2
    __c_node* __c = __get_db()->__find_c_and_lock(this);
    for (__i_node** __p = __c->end_; __p != __c->beg_; )
    {
        --__p;
        iterator* __i = static_cast<iterator*>((*__p)->__i_);
        if (__i->__ptr_ == __n)
        {
            (*__p)->__c_ = nullptr;
            if (--__c->end_ != __p)
                memmove(__p, __p+1, (__c->end_ - __p)*sizeof(__i_node*));
        }
    }
    __get_db()->unlock();
#endif
    __node_alloc_traits::destroy(__na, _VSTD::addressof(__n->__value_));
    __node_alloc_traits::deallocate(__na, __n, 1);
#if _LIBCPP_DEBUG_LEVEL >= 2
    return iterator(__r, this);
#else
    return iterator(__r);
#endif
}

template <class _Tp, class _Alloc>
typename list<_Tp, _Alloc>::iterator
list<_Tp, _Alloc>::erase(const_iterator __f, const_iterator __l)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__f) == this,
        "list::erase(iterator, iterator) called with an iterator not"
        " referring to this list");
#endif
    if (__f != __l)
    {
        __node_allocator& __na = base::__node_alloc();
        base::__unlink_nodes(__f.__ptr_, __l.__ptr_->__prev_);
        while (__f != __l)
        {
            __node_pointer __n = __f.__ptr_;
            ++__f;
            --base::__sz();
#if _LIBCPP_DEBUG_LEVEL >= 2
            __c_node* __c = __get_db()->__find_c_and_lock(this);
            for (__i_node** __p = __c->end_; __p != __c->beg_; )
            {
                --__p;
                iterator* __i = static_cast<iterator*>((*__p)->__i_);
                if (__i->__ptr_ == __n)
                {
                    (*__p)->__c_ = nullptr;
                    if (--__c->end_ != __p)
                        memmove(__p, __p+1, (__c->end_ - __p)*sizeof(__i_node*));
                }
            }
            __get_db()->unlock();
#endif
            __node_alloc_traits::destroy(__na, _VSTD::addressof(__n->__value_));
            __node_alloc_traits::deallocate(__na, __n, 1);
        }
    }
#if _LIBCPP_DEBUG_LEVEL >= 2
    return iterator(__l.__ptr_, this);
#else
    return iterator(__l.__ptr_);
#endif
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::resize(size_type __n)
{
    if (__n < base::__sz())
        erase(__iterator(__n), end());
    else if (__n > base::__sz())
    {
        __n -= base::__sz();
        size_type __ds = 0;
        __node_allocator& __na = base::__node_alloc();
        typedef __allocator_destructor<__node_allocator> _Dp;
        unique_ptr<__node, _Dp> __hold(__node_alloc_traits::allocate(__na, 1), _Dp(__na, 1));
        __hold->__prev_ = 0;
        __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_));
        ++__ds;
#if _LIBCPP_DEBUG_LEVEL >= 2
        iterator __r = iterator(__hold.release(), this);
#else
        iterator __r = iterator(__hold.release());
#endif
        iterator __e = __r;
#ifndef _LIBCPP_NO_EXCEPTIONS
        try
        {
#endif  // _LIBCPP_NO_EXCEPTIONS
            for (--__n; __n != 0; --__n, ++__e, ++__ds)
            {
                __hold.reset(__node_alloc_traits::allocate(__na, 1));
                __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_));
                __e.__ptr_->__next_ = __hold.get();
                __hold->__prev_ = __e.__ptr_;
                __hold.release();
            }
#ifndef _LIBCPP_NO_EXCEPTIONS
        }
        catch (...)
        {
            while (true)
            {
                __node_alloc_traits::destroy(__na, _VSTD::addressof(*__e));
                __node_pointer __prev = __e.__ptr_->__prev_;
                __node_alloc_traits::deallocate(__na, __e.__ptr_, 1);
                if (__prev == 0)
                    break;
#if _LIBCPP_DEBUG_LEVEL >= 2
                __e = iterator(__prev, this);
#else
                __e = iterator(__prev);
#endif
            }
            throw;
        }
#endif  // _LIBCPP_NO_EXCEPTIONS
        __link_nodes(static_cast<__node_pointer>(pointer_traits<__node_base_pointer>::
                         pointer_to(base::__end_)), __r.__ptr_, __e.__ptr_);
        base::__sz() += __ds;
    }
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::resize(size_type __n, const value_type& __x)
{
    if (__n < base::__sz())
        erase(__iterator(__n), end());
    else if (__n > base::__sz())
    {
        __n -= base::__sz();
        size_type __ds = 0;
        __node_allocator& __na = base::__node_alloc();
        typedef __allocator_destructor<__node_allocator> _Dp;
        unique_ptr<__node, _Dp> __hold(__node_alloc_traits::allocate(__na, 1), _Dp(__na, 1));
        __hold->__prev_ = 0;
        __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), __x);
        ++__ds;
#if _LIBCPP_DEBUG_LEVEL >= 2
        iterator __r = iterator(__hold.release(), this);
#else
        iterator __r = iterator(__hold.release());
#endif
        iterator __e = __r;
#ifndef _LIBCPP_NO_EXCEPTIONS
        try
        {
#endif  // _LIBCPP_NO_EXCEPTIONS
            for (--__n; __n != 0; --__n, ++__e, ++__ds)
            {
                __hold.reset(__node_alloc_traits::allocate(__na, 1));
                __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), __x);
                __e.__ptr_->__next_ = __hold.get();
                __hold->__prev_ = __e.__ptr_;
                __hold.release();
            }
#ifndef _LIBCPP_NO_EXCEPTIONS
        }
        catch (...)
        {
            while (true)
            {
                __node_alloc_traits::destroy(__na, _VSTD::addressof(*__e));
                __node_pointer __prev = __e.__ptr_->__prev_;
                __node_alloc_traits::deallocate(__na, __e.__ptr_, 1);
                if (__prev == 0)
                    break;
#if _LIBCPP_DEBUG_LEVEL >= 2
                __e = iterator(__prev, this);
#else
                __e = iterator(__prev);
#endif
            }
            throw;
        }
#endif  // _LIBCPP_NO_EXCEPTIONS
        __link_nodes(static_cast<__node_pointer>(pointer_traits<__node_base_pointer>::
                         pointer_to(base::__end_)), __r.__ptr_, __e.__ptr_);
        base::__sz() += __ds;
    }
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::splice(const_iterator __p, list& __c)
{
    _LIBCPP_ASSERT(this != &__c,
                   "list::splice(iterator, list) called with this == &list");
#if _LIBCPP_DEBUG_LEVEL >= 2
    _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__p) == this,
        "list::splice(iterator, list) called with an iterator not"
        " referring to this list");
#endif
    if (!__c.empty())
    {
        __node_pointer __f = __c.__end_.__next_;
        __node_pointer __l = __c.__end_.__prev_;
        base::__unlink_nodes(__f, __l);
        __link_nodes(__p.__ptr_, __f, __l);
        base::__sz() += __c.__sz();
        __c.__sz() = 0;
#if _LIBCPP_DEBUG_LEVEL >= 2
        __libcpp_db* __db = __get_db();
        __c_node* __cn1 = __db->__find_c_and_lock(this);
        __c_node* __cn2 = __db->__find_c(&__c);
        for (__i_node** __p = __cn2->end_; __p != __cn2->beg_;)
        {
            --__p;
            iterator* __i = static_cast<iterator*>((*__p)->__i_);
            if (__i->__ptr_ != static_cast<__node_pointer>(
                       pointer_traits<__node_base_pointer>::pointer_to(__c.__end_)))
            {
                __cn1->__add(*__p);
                (*__p)->__c_ = __cn1;
                if (--__cn2->end_ != __p)
                    memmove(__p, __p+1, (__cn2->end_ - __p)*sizeof(__i_node*));
            }
        }
        __db->unlock();
#endif
    }
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::splice(const_iterator __p, list& __c, const_iterator __i)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__p) == this,
        "list::splice(iterator, list, iterator) called with first iterator not"
        " referring to this list");
    _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__i) == &__c,
        "list::splice(iterator, list, iterator) called with second iterator not"
        " referring to list argument");
    _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(&__i),
        "list::splice(iterator, list, iterator) called with second iterator not"
        " derefereceable");
#endif
    if (__p.__ptr_ != __i.__ptr_ && __p.__ptr_ != __i.__ptr_->__next_)
    {
        __node_pointer __f = __i.__ptr_;
        base::__unlink_nodes(__f, __f);
        __link_nodes(__p.__ptr_, __f, __f);
        --__c.__sz();
        ++base::__sz();
#if _LIBCPP_DEBUG_LEVEL >= 2
        __libcpp_db* __db = __get_db();
        __c_node* __cn1 = __db->__find_c_and_lock(this);
        __c_node* __cn2 = __db->__find_c(&__c);
        for (__i_node** __p = __cn2->end_; __p != __cn2->beg_;)
        {
            --__p;
            iterator* __j = static_cast<iterator*>((*__p)->__i_);
            if (__j->__ptr_ == __f)
            {
                __cn1->__add(*__p);
                (*__p)->__c_ = __cn1;
                if (--__cn2->end_ != __p)
                    memmove(__p, __p+1, (__cn2->end_ - __p)*sizeof(__i_node*));
            }
        }
        __db->unlock();
#endif
    }
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::splice(const_iterator __p, list& __c, const_iterator __f, const_iterator __l)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__p) == this,
        "list::splice(iterator, list, iterator, iterator) called with first iterator not"
        " referring to this list");
    _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__f) == &__c,
        "list::splice(iterator, list, iterator, iterator) called with second iterator not"
        " referring to list argument");
    if (this == &__c)
    {
        for (const_iterator __i = __f; __i != __l; ++__i)
            _LIBCPP_ASSERT(__i != __p,
                           "list::splice(iterator, list, iterator, iterator)"
                           " called with the first iterator within the range"
                           " of the second and third iterators");
    }
#endif
    if (__f != __l)
    {
        if (this != &__c)
        {
            size_type __s = _VSTD::distance(__f, __l);
            __c.__sz() -= __s;
            base::__sz() += __s;
        }
        __node_pointer __first = __f.__ptr_;
        --__l;
        __node_pointer __last = __l.__ptr_;
        base::__unlink_nodes(__first, __last);
        __link_nodes(__p.__ptr_, __first, __last);
#if _LIBCPP_DEBUG_LEVEL >= 2
        __libcpp_db* __db = __get_db();
        __c_node* __cn1 = __db->__find_c_and_lock(this);
        __c_node* __cn2 = __db->__find_c(&__c);
        for (__i_node** __p = __cn2->end_; __p != __cn2->beg_;)
        {
            --__p;
            iterator* __j = static_cast<iterator*>((*__p)->__i_);
            for (__node_pointer __k = __f.__ptr_;
                                          __k != __l.__ptr_; __k = __k->__next_)
            {
                if (__j->__ptr_ == __k)
                {
                    __cn1->__add(*__p);
                    (*__p)->__c_ = __cn1;
                    if (--__cn2->end_ != __p)
                        memmove(__p, __p+1, (__cn2->end_ - __p)*sizeof(__i_node*));
                }
            }
        }
        __db->unlock();
#endif
    }
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::remove(const value_type& __x)
{
    for (iterator __i = begin(), __e = end(); __i != __e;)
    {
        if (*__i == __x)
        {
            iterator __j = _VSTD::next(__i);
            for (; __j != __e && *__j == __x; ++__j)
                ;
            __i = erase(__i, __j);
        }
        else
            ++__i;
    }
}

template <class _Tp, class _Alloc>
template <class _Pred>
void
list<_Tp, _Alloc>::remove_if(_Pred __pred)
{
    for (iterator __i = begin(), __e = end(); __i != __e;)
    {
        if (__pred(*__i))
        {
            iterator __j = _VSTD::next(__i);
            for (; __j != __e && __pred(*__j); ++__j)
                ;
            __i = erase(__i, __j);
        }
        else
            ++__i;
    }
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
void
list<_Tp, _Alloc>::unique()
{
    unique(__equal_to<value_type>());
}

template <class _Tp, class _Alloc>
template <class _BinaryPred>
void
list<_Tp, _Alloc>::unique(_BinaryPred __binary_pred)
{
    for (iterator __i = begin(), __e = end(); __i != __e;)
    {
        iterator __j = _VSTD::next(__i);
        for (; __j != __e && __binary_pred(*__i, *__j); ++__j)
            ;
        if (++__i != __j)
            __i = erase(__i, __j);
    }
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
void
list<_Tp, _Alloc>::merge(list& __c)
{
    merge(__c, __less<value_type>());
}

template <class _Tp, class _Alloc>
template <class _Comp>
void
list<_Tp, _Alloc>::merge(list& __c, _Comp __comp)
{
    if (this != &__c)
    {
        iterator __f1 = begin();
        iterator __e1 = end();
        iterator __f2 = __c.begin();
        iterator __e2 = __c.end();
        while (__f1 != __e1 && __f2 != __e2)
        {
            if (__comp(*__f2, *__f1))
            {
                size_type __ds = 1;
                iterator __m2 = _VSTD::next(__f2);
                for (; __m2 != __e2 && __comp(*__m2, *__f1); ++__m2, ++__ds)
                    ;
                base::__sz() += __ds;
                __c.__sz() -= __ds;
                __node_pointer __f = __f2.__ptr_;
                __node_pointer __l = __m2.__ptr_->__prev_;
                __f2 = __m2;
                base::__unlink_nodes(__f, __l);
                __m2 = _VSTD::next(__f1);
                __link_nodes(__f1.__ptr_, __f, __l);
                __f1 = __m2;
            }
            else
                ++__f1;
        }
        splice(__e1, __c);
#if _LIBCPP_DEBUG_LEVEL >= 2
        __libcpp_db* __db = __get_db();
        __c_node* __cn1 = __db->__find_c_and_lock(this);
        __c_node* __cn2 = __db->__find_c(&__c);
        for (__i_node** __p = __cn2->end_; __p != __cn2->beg_;)
        {
            --__p;
            iterator* __i = static_cast<iterator*>((*__p)->__i_);
            if (__i->__ptr_ != static_cast<__node_pointer>(
                       pointer_traits<__node_base_pointer>::pointer_to(__c.__end_)))
            {
                __cn1->__add(*__p);
                (*__p)->__c_ = __cn1;
                if (--__cn2->end_ != __p)
                    memmove(__p, __p+1, (__cn2->end_ - __p)*sizeof(__i_node*));
            }
        }
        __db->unlock();
#endif
    }
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
void
list<_Tp, _Alloc>::sort()
{
    sort(__less<value_type>());
}

template <class _Tp, class _Alloc>
template <class _Comp>
inline _LIBCPP_INLINE_VISIBILITY
void
list<_Tp, _Alloc>::sort(_Comp __comp)
{
    __sort(begin(), end(), base::__sz(), __comp);
}

template <class _Tp, class _Alloc>
template <class _Comp>
typename list<_Tp, _Alloc>::iterator
list<_Tp, _Alloc>::__sort(iterator __f1, iterator __e2, size_type __n, _Comp& __comp)
{
    switch (__n)
    {
    case 0:
    case 1:
        return __f1;
    case 2:
        if (__comp(*--__e2, *__f1))
        {
            __node_pointer __f = __e2.__ptr_;
            base::__unlink_nodes(__f, __f);
            __link_nodes(__f1.__ptr_, __f, __f);
            return __e2;
        }
        return __f1;
    }
    size_type __n2 = __n / 2;
    iterator __e1 = _VSTD::next(__f1, __n2);
    iterator  __r = __f1 = __sort(__f1, __e1, __n2, __comp);
    iterator __f2 = __e1 = __sort(__e1, __e2, __n - __n2, __comp);
    if (__comp(*__f2, *__f1))
    {
        iterator __m2 = _VSTD::next(__f2);
        for (; __m2 != __e2 && __comp(*__m2, *__f1); ++__m2)
            ;
        __node_pointer __f = __f2.__ptr_;
        __node_pointer __l = __m2.__ptr_->__prev_;
        __r = __f2;
        __e1 = __f2 = __m2;
        base::__unlink_nodes(__f, __l);
        __m2 = _VSTD::next(__f1);
        __link_nodes(__f1.__ptr_, __f, __l);
        __f1 = __m2;
    }
    else
        ++__f1;
    while (__f1 != __e1 && __f2 != __e2)
    {
        if (__comp(*__f2, *__f1))
        {
            iterator __m2 = _VSTD::next(__f2);
            for (; __m2 != __e2 && __comp(*__m2, *__f1); ++__m2)
                ;
            __node_pointer __f = __f2.__ptr_;
            __node_pointer __l = __m2.__ptr_->__prev_;
            if (__e1 == __f2)
                __e1 = __m2;
            __f2 = __m2;
            base::__unlink_nodes(__f, __l);
            __m2 = _VSTD::next(__f1);
            __link_nodes(__f1.__ptr_, __f, __l);
            __f1 = __m2;
        }
        else
            ++__f1;
    }
    return __r;
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::reverse() _NOEXCEPT
{
    if (base::__sz() > 1)
    {
        iterator __e = end();
        for (iterator __i = begin(); __i.__ptr_ != __e.__ptr_;)
        {
            _VSTD::swap(__i.__ptr_->__prev_, __i.__ptr_->__next_);
            __i.__ptr_ = __i.__ptr_->__prev_;
        }
        _VSTD::swap(__e.__ptr_->__prev_, __e.__ptr_->__next_);
    }
}

template <class _Tp, class _Alloc>
bool
list<_Tp, _Alloc>::__invariants() const
{
    return size() == _VSTD::distance(begin(), end());
}

#if _LIBCPP_DEBUG_LEVEL >= 2

template <class _Tp, class _Alloc>
bool
list<_Tp, _Alloc>::__dereferenceable(const const_iterator* __i) const
{
    return __i->__ptr_ != static_cast<__node_pointer>(
                       pointer_traits<__node_base_pointer>::pointer_to(const_cast<__node_base&>(this->__end_)));
}

template <class _Tp, class _Alloc>
bool
list<_Tp, _Alloc>::__decrementable(const const_iterator* __i) const
{
    return !empty() &&  __i->__ptr_ != base::__end_.__next_;
}

template <class _Tp, class _Alloc>
bool
list<_Tp, _Alloc>::__addable(const const_iterator* __i, ptrdiff_t __n) const
{
    return false;
}

template <class _Tp, class _Alloc>
bool
list<_Tp, _Alloc>::__subscriptable(const const_iterator* __i, ptrdiff_t __n) const
{
    return false;
}

#endif  // _LIBCPP_DEBUG_LEVEL >= 2

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator==(const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y)
{
    return __x.size() == __y.size() && _VSTD::equal(__x.begin(), __x.end(), __y.begin());
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator< (const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y)
{
    return _VSTD::lexicographical_compare(__x.begin(), __x.end(), __y.begin(), __y.end());
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator!=(const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y)
{
    return !(__x == __y);
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator> (const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y)
{
    return __y < __x;
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator>=(const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y)
{
    return !(__x < __y);
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator<=(const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y)
{
    return !(__y < __x);
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
void
swap(list<_Tp, _Alloc>& __x, list<_Tp, _Alloc>& __y)
    _NOEXCEPT_(_NOEXCEPT_(__x.swap(__y)))
{
    __x.swap(__y);
}

_LIBCPP_END_NAMESPACE_STD

#endif  // _LIBCPP_LIST
@


1.4
log
@## SVN ## Exported commit - http://svnweb.freebsd.org/changeset/base/249998
## SVN ## CVS IS DEPRECATED: http://wiki.freebsd.org/CvsIsDeprecated
@
text
@d199 7
d211 2
a212 2
        : __prev_(static_cast<pointer>(this)),
          __next_(static_cast<pointer>(this))
d315 8
a322 1
    pointer operator->() const {return &(operator*());}
d369 1
a369 1
        rebind<const __list_node<_Tp, _VoidPtr> > __node_pointer;
d371 1
a371 1
        rebind<const __list_node<_Tp, _VoidPtr> >::other __node_pointer;
d456 8
a463 1
    pointer operator->() const {return &(operator*());}
d529 1
a529 1
    typedef typename __node_alloc_traits::const_pointer              __node_const_pointer;
d534 9
d558 1
a558 1
    static void __unlink_nodes(__node_base& __f, __node_base& __l) _NOEXCEPT;
d590 2
a591 1
        return iterator(static_cast<__node_pointer>(&__end_), this);
d593 2
a594 1
        return iterator(static_cast<__node_pointer>(&__end_));
d601 2
a602 1
        return const_iterator(static_cast<__node_const_pointer>(&__end_), this);
d604 2
a605 1
        return const_iterator(static_cast<__node_const_pointer>(&__end_));
d674 1
a674 1
__list_imp<_Tp, _Alloc>::__unlink_nodes(__node_base& __f, __node_base& __l)
d677 2
a678 2
    __f.__prev_->__next_ = __l.__next_;
    __l.__next_->__prev_ = __f.__prev_;
d713 3
a715 2
        __node_pointer __l = static_cast<__node_pointer>(&__end_);
        __unlink_nodes(*__f, *__l->__prev_);
d719 1
a719 1
            __node& __n = *__f;
d721 2
a722 2
            __node_alloc_traits::destroy(__na, _VSTD::addressof(__n.__value_));
            __node_alloc_traits::deallocate(__na, _VSTD::addressof(__n), 1);
d757 2
a758 1
        __end_.__next_ = __end_.__prev_ = &static_cast<__node&>(__end_);
d761 2
a762 1
                                = &static_cast<__node&>(__end_);
d765 2
a766 1
                           = &static_cast<__node&>(__c.__end_);
d769 2
a770 1
                                    = &static_cast<__node&>(__c.__end_);
d782 2
a783 1
        if (__i->__ptr_ == static_cast<__node_pointer>(&__c.__end_))
d796 2
a797 1
        if (__i->__ptr_ == static_cast<__node_pointer>(&__end_))
d819 2
d1060 1
a1060 1
    static void __link_nodes(__node& __p, __node& __f, __node& __l);
d1074 1
a1074 1
list<_Tp, _Alloc>::__link_nodes(__node& __p, __node& __f, __node& __l)
d1076 4
a1079 4
    __p.__prev_->__next_ = &__f;
    __f.__prev_ = __p.__prev_;
    __p.__prev_ = &__l;
    __l.__next_ = &__p;
d1336 1
a1336 1
    __link_nodes(const_cast<__node&>(*__p.__ptr_), *__hold, *__hold);
d1353 1
a1353 1
    iterator __r(const_cast<__node_pointer>(__p.__ptr_), this);
d1355 1
a1355 1
    iterator __r(const_cast<__node_pointer>(__p.__ptr_));
d1405 1
a1405 1
        __link_nodes(const_cast<__node&>(*__p.__ptr_), *__r.__ptr_, *__e.__ptr_);
d1421 1
a1421 1
    iterator __r(const_cast<__node_pointer>(__p.__ptr_), this);
d1423 1
a1423 1
    iterator __r(const_cast<__node_pointer>(__p.__ptr_));
d1473 1
a1473 1
        __link_nodes(const_cast<__node&>(*__p.__ptr_), *__r.__ptr_, *__e.__ptr_);
d1487 1
a1487 1
    __link_nodes(*base::__end_.__next_, *__hold, *__hold);
d1500 2
a1501 1
    __link_nodes(static_cast<__node&>(base::__end_), *__hold, *__hold);
d1516 1
a1516 1
    __link_nodes(*base::__end_.__next_, *__hold, *__hold);
d1529 2
a1530 1
    __link_nodes(static_cast<__node&>(base::__end_), *__hold, *__hold);
d1546 1
a1546 1
    __link_nodes(*base::__end_.__next_, *__hold, *__hold);
d1560 2
a1561 1
    __link_nodes(static_cast<__node&>(base::__end_), *__hold, *__hold);
d1581 1
a1581 1
    __link_nodes(const_cast<__node&>(*__p.__ptr_), *__hold, *__hold);
d1606 1
a1606 1
    __link_nodes(const_cast<__node&>(*__p.__ptr_), *__hold, *__hold);
d1623 1
a1623 1
    __node& __n = *base::__end_.__next_;
d1632 1
a1632 1
        if (__i->__ptr_ == &__n)
d1641 2
a1642 2
    __node_alloc_traits::destroy(__na, _VSTD::addressof(__n.__value_));
    __node_alloc_traits::deallocate(__na, _VSTD::addressof(__n), 1);
d1649 1
a1649 1
    _LIBCPP_ASSERT(!empty(), "list::pop_front() called with empty list");
d1651 1
a1651 1
    __node& __n = *base::__end_.__prev_;
d1660 1
a1660 1
        if (__i->__ptr_ == &__n)
d1669 2
a1670 2
    __node_alloc_traits::destroy(__na, _VSTD::addressof(__n.__value_));
    __node_alloc_traits::deallocate(__na, _VSTD::addressof(__n), 1);
d1685 2
a1686 2
    __node& __n = const_cast<__node&>(*__p.__ptr_);
    __node_pointer __r = __n.__next_;
d1695 1
a1695 1
        if (__i->__ptr_ == &__n)
d1704 2
a1705 2
    __node_alloc_traits::destroy(__na, _VSTD::addressof(__n.__value_));
    __node_alloc_traits::deallocate(__na, _VSTD::addressof(__n), 1);
d1725 1
a1725 1
        base::__unlink_nodes(const_cast<__node&>(*__f.__ptr_), *__l.__ptr_->__prev_);
d1728 1
a1728 1
            __node& __n = const_cast<__node&>(*__f.__ptr_);
d1737 1
a1737 1
                if (__i->__ptr_ == &__n)
d1746 2
a1747 2
            __node_alloc_traits::destroy(__na, _VSTD::addressof(__n.__value_));
            __node_alloc_traits::deallocate(__na, _VSTD::addressof(__n), 1);
d1751 1
a1751 1
    return iterator(const_cast<__node_pointer>(__l.__ptr_), this);
d1753 1
a1753 1
    return iterator(const_cast<__node_pointer>(__l.__ptr_));
d1811 2
a1812 1
        __link_nodes(static_cast<__node&>(base::__end_), *__r.__ptr_, *__e.__ptr_);
d1871 2
a1872 1
        __link_nodes(static_cast<__node&>(base::__end_), *__r.__ptr_, *__e.__ptr_);
d1890 2
a1891 2
        __node& __f = *__c.__end_.__next_;
        __node& __l = *__c.__end_.__prev_;
d1893 1
a1893 1
        __link_nodes(const_cast<__node&>(*__p.__ptr_), __f, __l);
d1904 2
a1905 1
            if (__i->__ptr_ != static_cast<__node_pointer>(&__c.__end_))
d1935 1
a1935 1
        __node& __f = const_cast<__node&>(*__i.__ptr_);
d1937 1
a1937 1
        __link_nodes(const_cast<__node&>(*__p.__ptr_), __f, __f);
d1948 1
a1948 1
            if (__j->__ptr_ == &__f)
d1989 1
a1989 1
        __node& __first = const_cast<__node&>(*__f.__ptr_);
d1991 1
a1991 1
        __node& __last = const_cast<__node&>(*__l.__ptr_);
d1993 1
a1993 1
        __link_nodes(const_cast<__node&>(*__p.__ptr_), __first, __last);
d2002 1
a2002 1
            for (__node_pointer __k = const_cast<__node_pointer>(__f.__ptr_);
d2108 2
a2109 2
                __node& __f = *__f2.__ptr_;
                __node& __l = *__m2.__ptr_->__prev_;
d2113 1
a2113 1
                __link_nodes(*__f1.__ptr_, __f, __l);
d2128 2
a2129 1
            if (__i->__ptr_ != static_cast<__node_pointer>(&__c.__end_))
d2172 1
a2172 1
            __node& __f = *__e2.__ptr_;
d2174 1
a2174 1
            __link_nodes(*__f1.__ptr_, __f, __f);
d2188 2
a2189 2
        __node& __f = *__f2.__ptr_;
        __node& __l = *__m2.__ptr_->__prev_;
d2194 1
a2194 1
        __link_nodes(*__f1.__ptr_, __f, __l);
d2206 2
a2207 2
            __node& __f = *__f2.__ptr_;
            __node& __l = *__m2.__ptr_->__prev_;
d2213 1
a2213 1
            __link_nodes(*__f1.__ptr_, __f, __l);
d2251 2
a2252 1
    return __i->__ptr_ != &this->__end_;
@


1.3
log
@SVN rev 241903 on 2012-10-22 18:25:04Z by dim

Import libc++ trunk r165949.  Among other improvements and bug fixes,
this has many visibility problems fixed, which should help with
compiling certain ports that exercise C++11 mode (i.e. Firefox).

Also, belatedly add the LICENSE.TXT and accompanying CREDITS.TXT files,
which are referred to in all the source files.

MFC after:	1 month
@
text
@d216 1
a216 1
template <class _Tp, class _Alloc> class _LIBCPP_VISIBLE list;
d218 1
a218 1
template <class _Tp, class _VoidPtr> class _LIBCPP_VISIBLE __list_const_iterator;
d221 1
a221 1
class _LIBCPP_VISIBLE __list_iterator
d351 1
a351 1
class _LIBCPP_VISIBLE __list_const_iterator
d397 1
a397 1
    __list_const_iterator(__list_iterator<_Tp, _VoidPtr> __p) _NOEXCEPT
d770 1
a770 1
class _LIBCPP_VISIBLE list
d1295 3
d1299 1
d1525 5
d1636 2
@


1.2
log
@SVN rev 232950 on 2012-03-14 00:09:36Z by theraven

Import new versions of libcxxrt and libc++.
Please tests any C++ code you care about with -stdlib=libc++!

Approved by:	dim (mentor)
@
text
@d216 1
a216 1
template <class _Tp, class _Alloc> class list;
d218 1
a218 1
template <class _Tp, class _VoidPtr> class __list_const_iterator;
@


1.2.2.1
log
@file list was added on branch RELENG_9 on 2012-05-22 18:32:26 +0000
@
text
@d1 2275
@


1.2.2.2
log
@SVN rev 235798 on 2012-05-22 18:30:14Z by theraven

Merged libcxxrt and libc++.  Now available for testing on 9-stable with
-stdlib=libc++.  Changes to libstdc++ not yet merged, so it is not yet possible
to mix libstdc++ and libc++ in the same program.

Merged revisions: 226702,226785,227006,227755,227983,227987,228531,228630,228761,229067,230127,232950,233098,234715-234716,234772
@
text
@a0 2275
// -*- C++ -*-
//===---------------------------- list ------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#ifndef _LIBCPP_LIST
#define _LIBCPP_LIST

/*
    list synopsis

namespace std
{

template <class T, class Alloc = allocator<T> >
class list
{
public:

    // types:
    typedef T value_type;
    typedef Alloc allocator_type;
    typedef typename allocator_type::reference reference;
    typedef typename allocator_type::const_reference const_reference;
    typedef typename allocator_type::pointer pointer;
    typedef typename allocator_type::const_pointer const_pointer;
    typedef implementation-defined iterator;
    typedef implementation-defined const_iterator;
    typedef implementation-defined size_type;
    typedef implementation-defined difference_type;
    typedef reverse_iterator<iterator> reverse_iterator;
    typedef reverse_iterator<const_iterator> const_reverse_iterator;

    list()
        noexcept(is_nothrow_default_constructible<allocator_type>::value);
    explicit list(const allocator_type& a);
    explicit list(size_type n);
    list(size_type n, const value_type& value);
    list(size_type n, const value_type& value, const allocator_type& a);
    template <class Iter>
        list(Iter first, Iter last);
    template <class Iter>
        list(Iter first, Iter last, const allocator_type& a);
    list(const list& x);
    list(const list&, const allocator_type& a);
    list(list&& x)
        noexcept(is_nothrow_move_constructible<allocator_type>::value);
    list(list&&, const allocator_type& a);
    list(initializer_list<value_type>);
    list(initializer_list<value_type>, const allocator_type& a);

    ~list();

    list& operator=(const list& x);
    list& operator=(list&& x)
        noexcept(
             allocator_type::propagate_on_container_move_assignment::value &&
             is_nothrow_move_assignable<allocator_type>::value);
    list& operator=(initializer_list<value_type>);
    template <class Iter>
        void assign(Iter first, Iter last);
    void assign(size_type n, const value_type& t);
    void assign(initializer_list<value_type>);

    allocator_type get_allocator() const noexcept;

    iterator begin() noexcept;
    const_iterator begin() const noexcept;
    iterator end() noexcept;
    const_iterator end() const noexcept;
    reverse_iterator rbegin() noexcept;
    const_reverse_iterator rbegin() const noexcept;
    reverse_iterator rend() noexcept;
    const_reverse_iterator rend() const noexcept;
    const_iterator cbegin() const noexcept;
    const_iterator cend() const noexcept;
    const_reverse_iterator crbegin() const noexcept;
    const_reverse_iterator crend() const noexcept;

    reference front();
    const_reference front() const;
    reference back();
    const_reference back() const;

    bool empty() const noexcept;
    size_type size() const noexcept;
    size_type max_size() const noexcept;

    template <class... Args>
        void emplace_front(Args&&... args);
    void pop_front();
    template <class... Args>
        void emplace_back(Args&&... args);
    void pop_back();
    void push_front(const value_type& x);
    void push_front(value_type&& x);
    void push_back(const value_type& x);
    void push_back(value_type&& x);
    template <class... Args>
        iterator emplace(const_iterator position, Args&&... args);
    iterator insert(const_iterator position, const value_type& x);
    iterator insert(const_iterator position, value_type&& x);
    iterator insert(const_iterator position, size_type n, const value_type& x);
    template <class Iter>
        iterator insert(const_iterator position, Iter first, Iter last);
    iterator insert(const_iterator position, initializer_list<value_type> il);

    iterator erase(const_iterator position);
    iterator erase(const_iterator position, const_iterator last);

    void resize(size_type sz);
    void resize(size_type sz, const value_type& c);

    void swap(list&)
        noexcept(!allocator_type::propagate_on_container_swap::value ||
                 __is_nothrow_swappable<allocator_type>::value);
    void clear() noexcept;

    void splice(const_iterator position, list& x);
    void splice(const_iterator position, list&& x);
    void splice(const_iterator position, list& x, const_iterator i);
    void splice(const_iterator position, list&& x, const_iterator i);
    void splice(const_iterator position, list& x, const_iterator first,
                                                  const_iterator last);
    void splice(const_iterator position, list&& x, const_iterator first,
                                                  const_iterator last);

    void remove(const value_type& value);
    template <class Pred> void remove_if(Pred pred);
    void unique();
    template <class BinaryPredicate>
        void unique(BinaryPredicate binary_pred);
    void merge(list& x);
    void merge(list&& x);
    template <class Compare>
        void merge(list& x, Compare comp);
    template <class Compare>
        void merge(list&& x, Compare comp);
    void sort();
    template <class Compare>
        void sort(Compare comp);
    void reverse() noexcept;
};

template <class T, class Alloc>
    bool operator==(const list<T,Alloc>& x, const list<T,Alloc>& y);
template <class T, class Alloc>
    bool operator< (const list<T,Alloc>& x, const list<T,Alloc>& y);
template <class T, class Alloc>
    bool operator!=(const list<T,Alloc>& x, const list<T,Alloc>& y);
template <class T, class Alloc>
    bool operator> (const list<T,Alloc>& x, const list<T,Alloc>& y);
template <class T, class Alloc>
    bool operator>=(const list<T,Alloc>& x, const list<T,Alloc>& y);
template <class T, class Alloc>
    bool operator<=(const list<T,Alloc>& x, const list<T,Alloc>& y);

template <class T, class Alloc>
    void swap(list<T,Alloc>& x, list<T,Alloc>& y)
         noexcept(noexcept(x.swap(y)));

}  // std

*/

#include <__config>

#include <memory>
#include <limits>
#include <initializer_list>
#include <iterator>
#include <algorithm>

#include <__undef_min_max>

#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif

_LIBCPP_BEGIN_NAMESPACE_STD

template <class _Tp, class _VoidPtr> struct __list_node;

template <class _Tp, class _VoidPtr>
struct __list_node_base
{
    typedef typename pointer_traits<_VoidPtr>::template
#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
        rebind<__list_node<_Tp, _VoidPtr> > pointer;
#else
        rebind<__list_node<_Tp, _VoidPtr> >::other pointer;
#endif

    pointer __prev_;
    pointer __next_;

    _LIBCPP_INLINE_VISIBILITY
    __list_node_base()
        : __prev_(static_cast<pointer>(this)),
          __next_(static_cast<pointer>(this))
          {}
};

template <class _Tp, class _VoidPtr>
struct __list_node
    : public __list_node_base<_Tp, _VoidPtr>
{
    _Tp __value_;
};

template <class _Tp, class _Alloc> class list;
template <class _Tp, class _Alloc> class __list_imp;
template <class _Tp, class _VoidPtr> class __list_const_iterator;

template <class _Tp, class _VoidPtr>
class _LIBCPP_VISIBLE __list_iterator
{
    typedef typename pointer_traits<_VoidPtr>::template
#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
        rebind<__list_node<_Tp, _VoidPtr> > __node_pointer;
#else
        rebind<__list_node<_Tp, _VoidPtr> >::other __node_pointer;
#endif

    __node_pointer __ptr_;

#if _LIBCPP_DEBUG_LEVEL >= 2
    _LIBCPP_INLINE_VISIBILITY
    explicit __list_iterator(__node_pointer __p, const void* __c) _NOEXCEPT
        : __ptr_(__p)
    {
        __get_db()->__insert_ic(this, __c);
    }
#else
    _LIBCPP_INLINE_VISIBILITY
    explicit __list_iterator(__node_pointer __p) _NOEXCEPT : __ptr_(__p) {}
#endif



    template<class, class> friend class list;
    template<class, class> friend class __list_imp;
    template<class, class> friend class __list_const_iterator;
public:
    typedef bidirectional_iterator_tag       iterator_category;
    typedef _Tp                              value_type;
    typedef value_type&                      reference;
    typedef typename pointer_traits<_VoidPtr>::template
#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
            rebind<value_type>
#else
            rebind<value_type>::other
#endif
                                             pointer;
    typedef typename pointer_traits<pointer>::difference_type difference_type;

    _LIBCPP_INLINE_VISIBILITY
    __list_iterator() _NOEXCEPT
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        __get_db()->__insert_i(this);
#endif
    }

#if _LIBCPP_DEBUG_LEVEL >= 2

    _LIBCPP_INLINE_VISIBILITY
    __list_iterator(const __list_iterator& __p)
        : __ptr_(__p.__ptr_)
    {
        __get_db()->__iterator_copy(this, &__p);
    }

    _LIBCPP_INLINE_VISIBILITY
    ~__list_iterator()
    {
        __get_db()->__erase_i(this);
    }

    _LIBCPP_INLINE_VISIBILITY
    __list_iterator& operator=(const __list_iterator& __p)
    {
        if (this != &__p)
        {
            __get_db()->__iterator_copy(this, &__p);
            __ptr_ = __p.__ptr_;
        }
        return *this;
    }

#endif  // _LIBCPP_DEBUG_LEVEL >= 2

    _LIBCPP_INLINE_VISIBILITY
    reference operator*() const
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this),
                       "Attempted to dereference a non-dereferenceable list::iterator");
#endif
        return __ptr_->__value_;
    }
    _LIBCPP_INLINE_VISIBILITY
    pointer operator->() const {return &(operator*());}

    _LIBCPP_INLINE_VISIBILITY
    __list_iterator& operator++()
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this),
                       "Attempted to increment non-incrementable list::iterator");
#endif
        __ptr_ = __ptr_->__next_;
        return *this;
    }
    _LIBCPP_INLINE_VISIBILITY
    __list_iterator operator++(int) {__list_iterator __t(*this); ++(*this); return __t;}

    _LIBCPP_INLINE_VISIBILITY
    __list_iterator& operator--()
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        _LIBCPP_ASSERT(__get_const_db()->__decrementable(this),
                       "Attempted to decrement non-decrementable list::iterator");
#endif
        __ptr_ = __ptr_->__prev_;
        return *this;
    }
    _LIBCPP_INLINE_VISIBILITY
    __list_iterator operator--(int) {__list_iterator __t(*this); --(*this); return __t;}

    friend _LIBCPP_INLINE_VISIBILITY
    bool operator==(const __list_iterator& __x, const __list_iterator& __y)
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        _LIBCPP_ASSERT(__get_const_db()->__comparable(&__x, &__y),
                       "Attempted to compare non-comparable list::iterator");
#endif
        return __x.__ptr_ == __y.__ptr_;
    }
    friend _LIBCPP_INLINE_VISIBILITY
     bool operator!=(const __list_iterator& __x, const __list_iterator& __y)
        {return !(__x == __y);}
};

template <class _Tp, class _VoidPtr>
class _LIBCPP_VISIBLE __list_const_iterator
{
    typedef typename pointer_traits<_VoidPtr>::template
#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
        rebind<const __list_node<_Tp, _VoidPtr> > __node_pointer;
#else
        rebind<const __list_node<_Tp, _VoidPtr> >::other __node_pointer;
#endif

    __node_pointer __ptr_;

#if _LIBCPP_DEBUG_LEVEL >= 2
    _LIBCPP_INLINE_VISIBILITY
    explicit __list_const_iterator(__node_pointer __p, const void* __c) _NOEXCEPT
        : __ptr_(__p)
    {
        __get_db()->__insert_ic(this, __c);
    }
#else
    _LIBCPP_INLINE_VISIBILITY
    explicit __list_const_iterator(__node_pointer __p) _NOEXCEPT : __ptr_(__p) {}
#endif

    template<class, class> friend class list;
    template<class, class> friend class __list_imp;
public:
    typedef bidirectional_iterator_tag       iterator_category;
    typedef _Tp                              value_type;
    typedef const value_type&                reference;
    typedef typename pointer_traits<_VoidPtr>::template
#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
            rebind<const value_type>
#else
            rebind<const value_type>::other
#endif
                                             pointer;
    typedef typename pointer_traits<pointer>::difference_type difference_type;

    _LIBCPP_INLINE_VISIBILITY
    __list_const_iterator() _NOEXCEPT
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        __get_db()->__insert_i(this);
#endif
    }
    _LIBCPP_INLINE_VISIBILITY
    __list_const_iterator(__list_iterator<_Tp, _VoidPtr> __p) _NOEXCEPT
        : __ptr_(__p.__ptr_)
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        __get_db()->__iterator_copy(this, &__p);
#endif
    }

#if _LIBCPP_DEBUG_LEVEL >= 2

    _LIBCPP_INLINE_VISIBILITY
    __list_const_iterator(const __list_const_iterator& __p)
        : __ptr_(__p.__ptr_)
    {
        __get_db()->__iterator_copy(this, &__p);
    }

    _LIBCPP_INLINE_VISIBILITY
    ~__list_const_iterator()
    {
        __get_db()->__erase_i(this);
    }

    _LIBCPP_INLINE_VISIBILITY
    __list_const_iterator& operator=(const __list_const_iterator& __p)
    {
        if (this != &__p)
        {
            __get_db()->__iterator_copy(this, &__p);
            __ptr_ = __p.__ptr_;
        }
        return *this;
    }

#endif  // _LIBCPP_DEBUG_LEVEL >= 2
    _LIBCPP_INLINE_VISIBILITY
    reference operator*() const
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this),
                       "Attempted to dereference a non-dereferenceable list::const_iterator");
#endif
        return __ptr_->__value_;
    }
    _LIBCPP_INLINE_VISIBILITY
    pointer operator->() const {return &(operator*());}

    _LIBCPP_INLINE_VISIBILITY
    __list_const_iterator& operator++()
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this),
                       "Attempted to increment non-incrementable list::const_iterator");
#endif
        __ptr_ = __ptr_->__next_;
        return *this;
    }
    _LIBCPP_INLINE_VISIBILITY
    __list_const_iterator operator++(int) {__list_const_iterator __t(*this); ++(*this); return __t;}

    _LIBCPP_INLINE_VISIBILITY
    __list_const_iterator& operator--()
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        _LIBCPP_ASSERT(__get_const_db()->__decrementable(this),
                       "Attempted to decrement non-decrementable list::const_iterator");
#endif
        __ptr_ = __ptr_->__prev_;
        return *this;
    }
    _LIBCPP_INLINE_VISIBILITY
    __list_const_iterator operator--(int) {__list_const_iterator __t(*this); --(*this); return __t;}

    friend _LIBCPP_INLINE_VISIBILITY
    bool operator==(const __list_const_iterator& __x, const __list_const_iterator& __y)
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        _LIBCPP_ASSERT(__get_const_db()->__comparable(&__x, &__y),
                       "Attempted to compare non-comparable list::const_iterator");
#endif
        return __x.__ptr_ == __y.__ptr_;
    }
    friend _LIBCPP_INLINE_VISIBILITY
    bool operator!=(const __list_const_iterator& __x, const __list_const_iterator& __y)
        {return !(__x == __y);}
};

template <class _Tp, class _Alloc>
class __list_imp
{
    __list_imp(const __list_imp&);
    __list_imp& operator=(const __list_imp&);
protected:
    typedef _Tp                                                     value_type;
    typedef _Alloc                                                  allocator_type;
    typedef allocator_traits<allocator_type>                        __alloc_traits;
    typedef typename __alloc_traits::size_type                      size_type;
    typedef typename __alloc_traits::void_pointer                   __void_pointer;
    typedef __list_iterator<value_type, __void_pointer>             iterator;
    typedef __list_const_iterator<value_type, __void_pointer>       const_iterator;
    typedef __list_node_base<value_type, __void_pointer>            __node_base;
    typedef __list_node<value_type, __void_pointer>                 __node;
    typedef typename __alloc_traits::template
#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
                rebind_alloc<__node>
#else
                rebind_alloc<__node>::other
#endif
                                                                     __node_allocator;
    typedef allocator_traits<__node_allocator>                       __node_alloc_traits;
    typedef typename __node_alloc_traits::pointer                    __node_pointer;
    typedef typename __node_alloc_traits::const_pointer              __node_const_pointer;
    typedef typename __alloc_traits::pointer                         pointer;
    typedef typename __alloc_traits::const_pointer                   const_pointer;
    typedef typename __alloc_traits::difference_type                 difference_type;

    __node_base __end_;
    __compressed_pair<size_type, __node_allocator> __size_alloc_;

    _LIBCPP_INLINE_VISIBILITY
          size_type& __sz() _NOEXCEPT {return __size_alloc_.first();}
    _LIBCPP_INLINE_VISIBILITY
    const size_type& __sz() const _NOEXCEPT
        {return __size_alloc_.first();}
    _LIBCPP_INLINE_VISIBILITY
          __node_allocator& __node_alloc() _NOEXCEPT
          {return __size_alloc_.second();}
    _LIBCPP_INLINE_VISIBILITY
    const __node_allocator& __node_alloc() const _NOEXCEPT
        {return __size_alloc_.second();}

    static void __unlink_nodes(__node_base& __f, __node_base& __l) _NOEXCEPT;

    __list_imp()
        _NOEXCEPT_(is_nothrow_default_constructible<__node_allocator>::value);
    __list_imp(const allocator_type& __a);
    ~__list_imp();
    void clear() _NOEXCEPT;
    _LIBCPP_INLINE_VISIBILITY
    bool empty() const _NOEXCEPT {return __sz() == 0;}

    _LIBCPP_INLINE_VISIBILITY
    iterator begin() _NOEXCEPT
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        return iterator(__end_.__next_, this);
#else
        return iterator(__end_.__next_);
#endif
    }
    _LIBCPP_INLINE_VISIBILITY
    const_iterator begin() const  _NOEXCEPT
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        return const_iterator(__end_.__next_, this);
#else
        return const_iterator(__end_.__next_);
#endif
    }
    _LIBCPP_INLINE_VISIBILITY
    iterator end() _NOEXCEPT
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        return iterator(static_cast<__node_pointer>(&__end_), this);
#else
        return iterator(static_cast<__node_pointer>(&__end_));
#endif
    }
    _LIBCPP_INLINE_VISIBILITY
    const_iterator end() const _NOEXCEPT
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        return const_iterator(static_cast<__node_const_pointer>(&__end_), this);
#else
        return const_iterator(static_cast<__node_const_pointer>(&__end_));
#endif
    }

    void swap(__list_imp& __c)
        _NOEXCEPT_(!__node_alloc_traits::propagate_on_container_swap::value ||
                   __is_nothrow_swappable<__node_allocator>::value);

    _LIBCPP_INLINE_VISIBILITY
    void __copy_assign_alloc(const __list_imp& __c)
        {__copy_assign_alloc(__c, integral_constant<bool,
                      __node_alloc_traits::propagate_on_container_copy_assignment::value>());}

    _LIBCPP_INLINE_VISIBILITY
    void __move_assign_alloc(__list_imp& __c)
        _NOEXCEPT_(
            !__node_alloc_traits::propagate_on_container_move_assignment::value ||
            is_nothrow_move_assignable<__node_allocator>::value)
        {__move_assign_alloc(__c, integral_constant<bool,
                      __node_alloc_traits::propagate_on_container_move_assignment::value>());}

private:
    _LIBCPP_INLINE_VISIBILITY
    static void __swap_alloc(__node_allocator& __x, __node_allocator& __y)
        _NOEXCEPT_(!__node_alloc_traits::propagate_on_container_swap::value ||
                   __is_nothrow_swappable<__node_allocator>::value)
        {__swap_alloc(__x, __y, integral_constant<bool,
                      __node_alloc_traits::propagate_on_container_swap::value>());}
    _LIBCPP_INLINE_VISIBILITY
    static void __swap_alloc(__node_allocator& __x, __node_allocator& __y, true_type)
        _NOEXCEPT_(__is_nothrow_swappable<__node_allocator>::value)
        {
            using _VSTD::swap;
            swap(__x, __y);
        }
    _LIBCPP_INLINE_VISIBILITY
    static void __swap_alloc(__node_allocator& __x, __node_allocator& __y, false_type)
        _NOEXCEPT
        {}

    _LIBCPP_INLINE_VISIBILITY
    void __copy_assign_alloc(const __list_imp& __c, true_type)
        {
            if (__node_alloc() != __c.__node_alloc())
                clear();
            __node_alloc() = __c.__node_alloc();
        }

    _LIBCPP_INLINE_VISIBILITY
    void __copy_assign_alloc(const __list_imp& __c, false_type)
        {}

    _LIBCPP_INLINE_VISIBILITY
    void __move_assign_alloc(__list_imp& __c, true_type)
        _NOEXCEPT_(is_nothrow_move_assignable<__node_allocator>::value)
        {
            __node_alloc() = _VSTD::move(__c.__node_alloc());
        }

    _LIBCPP_INLINE_VISIBILITY
    void __move_assign_alloc(__list_imp& __c, false_type)
        _NOEXCEPT
        {}
};

// Unlink nodes [__f, __l]
template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
void
__list_imp<_Tp, _Alloc>::__unlink_nodes(__node_base& __f, __node_base& __l)
    _NOEXCEPT
{
    __f.__prev_->__next_ = __l.__next_;
    __l.__next_->__prev_ = __f.__prev_;
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
__list_imp<_Tp, _Alloc>::__list_imp()
        _NOEXCEPT_(is_nothrow_default_constructible<__node_allocator>::value)
    : __size_alloc_(0)
{
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
__list_imp<_Tp, _Alloc>::__list_imp(const allocator_type& __a)
    : __size_alloc_(0, __node_allocator(__a))
{
}

template <class _Tp, class _Alloc>
__list_imp<_Tp, _Alloc>::~__list_imp()
{
    clear();
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__erase_c(this);
#endif
}

template <class _Tp, class _Alloc>
void
__list_imp<_Tp, _Alloc>::clear() _NOEXCEPT
{
    if (!empty())
    {
        __node_allocator& __na = __node_alloc();
        __node_pointer __f = __end_.__next_;
        __node_pointer __l = static_cast<__node_pointer>(&__end_);
        __unlink_nodes(*__f, *__l->__prev_);
        __sz() = 0;
        while (__f != __l)
        {
            __node& __n = *__f;
            __f = __f->__next_;
            __node_alloc_traits::destroy(__na, _VSTD::addressof(__n.__value_));
            __node_alloc_traits::deallocate(__na, _VSTD::addressof(__n), 1);
        }
#if _LIBCPP_DEBUG_LEVEL >= 2
        __c_node* __c = __get_db()->__find_c_and_lock(this);
        for (__i_node** __p = __c->end_; __p != __c->beg_; )
        {
            --__p;
            const_iterator* __i = static_cast<const_iterator*>((*__p)->__i_);
            if (__i->__ptr_ != __l)
            {
                (*__p)->__c_ = nullptr;
                if (--__c->end_ != __p)
                    memmove(__p, __p+1, (__c->end_ - __p)*sizeof(__i_node*));
            }
        }
        __get_db()->unlock();
#endif
    }
}

template <class _Tp, class _Alloc>
void
__list_imp<_Tp, _Alloc>::swap(__list_imp& __c)
        _NOEXCEPT_(!__node_alloc_traits::propagate_on_container_swap::value ||
                   __is_nothrow_swappable<__node_allocator>::value)
{
    _LIBCPP_ASSERT(__alloc_traits::propagate_on_container_swap::value ||
                   this->__node_alloc() == __c.__node_alloc(),
                   "list::swap: Either propagate_on_container_swap must be true"
                   " or the allocators must compare equal");
    using _VSTD::swap;
    __swap_alloc(__node_alloc(), __c.__node_alloc());
    swap(__sz(), __c.__sz());
    swap(__end_, __c.__end_);
    if (__sz() == 0)
        __end_.__next_ = __end_.__prev_ = &static_cast<__node&>(__end_);
    else
        __end_.__prev_->__next_ = __end_.__next_->__prev_
                                = &static_cast<__node&>(__end_);
    if (__c.__sz() == 0)
        __c.__end_.__next_ = __c.__end_.__prev_
                           = &static_cast<__node&>(__c.__end_);
    else
        __c.__end_.__prev_->__next_ = __c.__end_.__next_->__prev_
                                    = &static_cast<__node&>(__c.__end_);
#if _LIBCPP_DEBUG_LEVEL >= 2
    __libcpp_db* __db = __get_db();
    __c_node* __cn1 = __db->__find_c_and_lock(this);
    __c_node* __cn2 = __db->__find_c(&__c);
    std::swap(__cn1->beg_, __cn2->beg_);
    std::swap(__cn1->end_, __cn2->end_);
    std::swap(__cn1->cap_, __cn2->cap_);
    for (__i_node** __p = __cn1->end_; __p != __cn1->beg_;)
    {
        --__p;
        const_iterator* __i = static_cast<const_iterator*>((*__p)->__i_);
        if (__i->__ptr_ == static_cast<__node_pointer>(&__c.__end_))
        {
            __cn2->__add(*__p);
            if (--__cn1->end_ != __p)
                memmove(__p, __p+1, (__cn1->end_ - __p)*sizeof(__i_node*));
        }
        else
            (*__p)->__c_ = __cn1;
    }
    for (__i_node** __p = __cn2->end_; __p != __cn2->beg_;)
    {
        --__p;
        const_iterator* __i = static_cast<const_iterator*>((*__p)->__i_);
        if (__i->__ptr_ == static_cast<__node_pointer>(&__end_))
        {
            __cn1->__add(*__p);
            if (--__cn2->end_ != __p)
                memmove(__p, __p+1, (__cn2->end_ - __p)*sizeof(__i_node*));
        }
        else
            (*__p)->__c_ = __cn2;
    }
    __db->unlock();
#endif
}

template <class _Tp, class _Alloc = allocator<_Tp> >
class _LIBCPP_VISIBLE list
    : private __list_imp<_Tp, _Alloc>
{
    typedef __list_imp<_Tp, _Alloc> base;
    typedef typename base::__node              __node;
    typedef typename base::__node_allocator    __node_allocator;
    typedef typename base::__node_pointer      __node_pointer;
    typedef typename base::__node_alloc_traits __node_alloc_traits;

public:
    typedef _Tp                                      value_type;
    typedef _Alloc                                   allocator_type;
    static_assert((is_same<value_type, typename allocator_type::value_type>::value),
                  "Invalid allocator::value_type");
    typedef value_type&                              reference;
    typedef const value_type&                        const_reference;
    typedef typename base::pointer                   pointer;
    typedef typename base::const_pointer             const_pointer;
    typedef typename base::size_type                 size_type;
    typedef typename base::difference_type           difference_type;
    typedef typename base::iterator                  iterator;
    typedef typename base::const_iterator            const_iterator;
    typedef _VSTD::reverse_iterator<iterator>         reverse_iterator;
    typedef _VSTD::reverse_iterator<const_iterator>   const_reverse_iterator;

    _LIBCPP_INLINE_VISIBILITY
    list()
        _NOEXCEPT_(is_nothrow_default_constructible<__node_allocator>::value)
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        __get_db()->__insert_c(this);
#endif
    }
    _LIBCPP_INLINE_VISIBILITY
    list(const allocator_type& __a) : base(__a)
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        __get_db()->__insert_c(this);
#endif
    }
    list(size_type __n);
    list(size_type __n, const value_type& __x);
    list(size_type __n, const value_type& __x, const allocator_type& __a);
    template <class _InpIter>
        list(_InpIter __f, _InpIter __l,
             typename enable_if<__is_input_iterator<_InpIter>::value>::type* = 0);
    template <class _InpIter>
        list(_InpIter __f, _InpIter __l, const allocator_type& __a,
             typename enable_if<__is_input_iterator<_InpIter>::value>::type* = 0);

    list(const list& __c);
    list(const list& __c, const allocator_type& __a);
    list& operator=(const list& __c);
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
    list(initializer_list<value_type> __il);
    list(initializer_list<value_type> __il, const allocator_type& __a);
#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    list(list&& __c)
        _NOEXCEPT_(is_nothrow_move_constructible<__node_allocator>::value);
    list(list&& __c, const allocator_type& __a);
    list& operator=(list&& __c)
        _NOEXCEPT_(
            __node_alloc_traits::propagate_on_container_move_assignment::value &&
            is_nothrow_move_assignable<__node_allocator>::value);
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
    _LIBCPP_INLINE_VISIBILITY
    list& operator=(initializer_list<value_type> __il)
        {assign(__il.begin(), __il.end()); return *this;}
#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

    template <class _InpIter>
        void assign(_InpIter __f, _InpIter __l,
             typename enable_if<__is_input_iterator<_InpIter>::value>::type* = 0);
    void assign(size_type __n, const value_type& __x);
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
    _LIBCPP_INLINE_VISIBILITY
    void assign(initializer_list<value_type> __il)
        {assign(__il.begin(), __il.end());}
#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

    allocator_type get_allocator() const _NOEXCEPT;

    _LIBCPP_INLINE_VISIBILITY
    size_type size() const _NOEXCEPT     {return base::__sz();}
    _LIBCPP_INLINE_VISIBILITY
    bool empty() const _NOEXCEPT         {return base::empty();}
    _LIBCPP_INLINE_VISIBILITY
    size_type max_size() const _NOEXCEPT
        {return numeric_limits<difference_type>::max();}

    _LIBCPP_INLINE_VISIBILITY
          iterator begin() _NOEXCEPT        {return base::begin();}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator begin()  const _NOEXCEPT {return base::begin();}
    _LIBCPP_INLINE_VISIBILITY
          iterator end() _NOEXCEPT          {return base::end();}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator end()    const _NOEXCEPT {return base::end();}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator cbegin() const _NOEXCEPT {return base::begin();}
    _LIBCPP_INLINE_VISIBILITY
    const_iterator cend()   const _NOEXCEPT {return base::end();}

    _LIBCPP_INLINE_VISIBILITY
          reverse_iterator rbegin() _NOEXCEPT
            {return       reverse_iterator(end());}
    _LIBCPP_INLINE_VISIBILITY
    const_reverse_iterator rbegin()  const _NOEXCEPT
        {return const_reverse_iterator(end());}
    _LIBCPP_INLINE_VISIBILITY
          reverse_iterator rend() _NOEXCEPT
            {return       reverse_iterator(begin());}
    _LIBCPP_INLINE_VISIBILITY
    const_reverse_iterator rend()    const _NOEXCEPT
        {return const_reverse_iterator(begin());}
    _LIBCPP_INLINE_VISIBILITY
    const_reverse_iterator crbegin() const _NOEXCEPT
        {return const_reverse_iterator(end());}
    _LIBCPP_INLINE_VISIBILITY
    const_reverse_iterator crend()   const _NOEXCEPT
        {return const_reverse_iterator(begin());}

    _LIBCPP_INLINE_VISIBILITY
    reference front()
    {
        _LIBCPP_ASSERT(!empty(), "list::front called on empty list");
        return base::__end_.__next_->__value_;
    }
    _LIBCPP_INLINE_VISIBILITY
    const_reference front() const
    {
        _LIBCPP_ASSERT(!empty(), "list::front called on empty list");
        return base::__end_.__next_->__value_;
    }
    _LIBCPP_INLINE_VISIBILITY
    reference back()
    {
        _LIBCPP_ASSERT(!empty(), "list::back called on empty list");
        return base::__end_.__prev_->__value_;
    }
    _LIBCPP_INLINE_VISIBILITY
    const_reference back() const
    {
        _LIBCPP_ASSERT(!empty(), "list::back called on empty list");
        return base::__end_.__prev_->__value_;
    }

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    void push_front(value_type&& __x);
    void push_back(value_type&& __x);
#ifndef _LIBCPP_HAS_NO_VARIADICS
    template <class... _Args>
       void emplace_front(_Args&&... __args);
    template <class... _Args>
        void emplace_back(_Args&&... __args);
    template <class... _Args>
        iterator emplace(const_iterator __p, _Args&&... __args);
#endif  // _LIBCPP_HAS_NO_VARIADICS
    iterator insert(const_iterator __p, value_type&& __x);
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

    void push_front(const value_type& __x);
    void push_back(const value_type& __x);

    iterator insert(const_iterator __p, const value_type& __x);
    iterator insert(const_iterator __p, size_type __n, const value_type& __x);
    template <class _InpIter>
        iterator insert(const_iterator __p, _InpIter __f, _InpIter __l,
             typename enable_if<__is_input_iterator<_InpIter>::value>::type* = 0);
#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
    _LIBCPP_INLINE_VISIBILITY
    iterator insert(const_iterator __p, initializer_list<value_type> __il)
        {return insert(__p, __il.begin(), __il.end());}
#endif   // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

    _LIBCPP_INLINE_VISIBILITY
    void swap(list& __c)
        _NOEXCEPT_(!__node_alloc_traits::propagate_on_container_swap::value ||
                   __is_nothrow_swappable<__node_allocator>::value)
        {base::swap(__c);}
    _LIBCPP_INLINE_VISIBILITY
    void clear() _NOEXCEPT {base::clear();}

    void pop_front();
    void pop_back();

    iterator erase(const_iterator __p);
    iterator erase(const_iterator __f, const_iterator __l);

    void resize(size_type __n);
    void resize(size_type __n, const value_type& __x);

    void splice(const_iterator __p, list& __c);
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    _LIBCPP_INLINE_VISIBILITY
    void splice(const_iterator __p, list&& __c) {splice(__p, __c);}
#endif
    void splice(const_iterator __p, list& __c, const_iterator __i);
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    _LIBCPP_INLINE_VISIBILITY
    void splice(const_iterator __p, list&& __c, const_iterator __i)
        {splice(__p, __c, __i);}
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
    void splice(const_iterator __p, list& __c, const_iterator __f, const_iterator __l);
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    _LIBCPP_INLINE_VISIBILITY
    void splice(const_iterator __p, list&& __c, const_iterator __f, const_iterator __l)
        {splice(__p, __c, __f, __l);}
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

    void remove(const value_type& __x);
    template <class _Pred> void remove_if(_Pred __pred);
    void unique();
    template <class _BinaryPred>
        void unique(_BinaryPred __binary_pred);
    void merge(list& __c);
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    _LIBCPP_INLINE_VISIBILITY
    void merge(list&& __c) {merge(__c);}
#endif
    template <class _Comp>
        void merge(list& __c, _Comp __comp);
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
    template <class _Comp>
    _LIBCPP_INLINE_VISIBILITY
        void merge(list&& __c, _Comp __comp) {merge(__c, __comp);}
#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
    void sort();
    template <class _Comp>
        void sort(_Comp __comp);

    void reverse() _NOEXCEPT;

    bool __invariants() const;

#if _LIBCPP_DEBUG_LEVEL >= 2

    bool __dereferenceable(const const_iterator* __i) const;
    bool __decrementable(const const_iterator* __i) const;
    bool __addable(const const_iterator* __i, ptrdiff_t __n) const;
    bool __subscriptable(const const_iterator* __i, ptrdiff_t __n) const;

#endif  // _LIBCPP_DEBUG_LEVEL >= 2

private:
    static void __link_nodes(__node& __p, __node& __f, __node& __l);
    iterator __iterator(size_type __n);
    template <class _Comp>
        static iterator __sort(iterator __f1, iterator __e2, size_type __n, _Comp& __comp);

    void __move_assign(list& __c, true_type)
        _NOEXCEPT_(is_nothrow_move_assignable<__node_allocator>::value);
    void __move_assign(list& __c, false_type);
};

// Link in nodes [__f, __l] just prior to __p
template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
void
list<_Tp, _Alloc>::__link_nodes(__node& __p, __node& __f, __node& __l)
{
    __p.__prev_->__next_ = &__f;
    __f.__prev_ = __p.__prev_;
    __p.__prev_ = &__l;
    __l.__next_ = &__p;
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
typename list<_Tp, _Alloc>::iterator
list<_Tp, _Alloc>::__iterator(size_type __n)
{
    return __n <= base::__sz() / 2 ? _VSTD::next(begin(), __n)
                                   : _VSTD::prev(end(), base::__sz() - __n);
}

template <class _Tp, class _Alloc>
list<_Tp, _Alloc>::list(size_type __n)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
    for (; __n > 0; --__n)
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
        emplace_back();
#else
        push_back(value_type());
#endif
}

template <class _Tp, class _Alloc>
list<_Tp, _Alloc>::list(size_type __n, const value_type& __x)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
    for (; __n > 0; --__n)
        push_back(__x);
}

template <class _Tp, class _Alloc>
list<_Tp, _Alloc>::list(size_type __n, const value_type& __x, const allocator_type& __a)
    : base(__a)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
    for (; __n > 0; --__n)
        push_back(__x);
}

template <class _Tp, class _Alloc>
template <class _InpIter>
list<_Tp, _Alloc>::list(_InpIter __f, _InpIter __l,
                        typename enable_if<__is_input_iterator<_InpIter>::value>::type*)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
    for (; __f != __l; ++__f)
        push_back(*__f);
}

template <class _Tp, class _Alloc>
template <class _InpIter>
list<_Tp, _Alloc>::list(_InpIter __f, _InpIter __l, const allocator_type& __a,
                        typename enable_if<__is_input_iterator<_InpIter>::value>::type*)
    : base(__a)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
    for (; __f != __l; ++__f)
        push_back(*__f);
}

template <class _Tp, class _Alloc>
list<_Tp, _Alloc>::list(const list& __c)
    : base(allocator_type(
           __node_alloc_traits::select_on_container_copy_construction(
                __c.__node_alloc())))
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
    for (const_iterator __i = __c.begin(), __e = __c.end(); __i != __e; ++__i)
        push_back(*__i);
}

template <class _Tp, class _Alloc>
list<_Tp, _Alloc>::list(const list& __c, const allocator_type& __a)
    : base(__a)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
    for (const_iterator __i = __c.begin(), __e = __c.end(); __i != __e; ++__i)
        push_back(*__i);
}

#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

template <class _Tp, class _Alloc>
list<_Tp, _Alloc>::list(initializer_list<value_type> __il, const allocator_type& __a)
    : base(__a)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
    for (typename initializer_list<value_type>::const_iterator __i = __il.begin(),
            __e = __il.end(); __i != __e; ++__i)
        push_back(*__i);
}

template <class _Tp, class _Alloc>
list<_Tp, _Alloc>::list(initializer_list<value_type> __il)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
    for (typename initializer_list<value_type>::const_iterator __i = __il.begin(),
            __e = __il.end(); __i != __e; ++__i)
        push_back(*__i);
}

#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
list<_Tp, _Alloc>&
list<_Tp, _Alloc>::operator=(const list& __c)
{
    if (this != &__c)
    {
        base::__copy_assign_alloc(__c);
        assign(__c.begin(), __c.end());
    }
    return *this;
}

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
list<_Tp, _Alloc>::list(list&& __c)
    _NOEXCEPT_(is_nothrow_move_constructible<__node_allocator>::value)
    : base(allocator_type(_VSTD::move(__c.__node_alloc())))
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
    splice(end(), __c);
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
list<_Tp, _Alloc>::list(list&& __c, const allocator_type& __a)
    : base(__a)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
    if (__a == __c.get_allocator())
        splice(end(), __c);
    else
    {
        typedef move_iterator<iterator> _Ip;
        assign(_Ip(__c.begin()), _Ip(__c.end()));
    }
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
list<_Tp, _Alloc>&
list<_Tp, _Alloc>::operator=(list&& __c)
        _NOEXCEPT_(
            __node_alloc_traits::propagate_on_container_move_assignment::value &&
            is_nothrow_move_assignable<__node_allocator>::value)
{
    __move_assign(__c, integral_constant<bool,
          __node_alloc_traits::propagate_on_container_move_assignment::value>());
    return *this;
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::__move_assign(list& __c, false_type)
{
    if (base::__node_alloc() != __c.__node_alloc())
    {
        typedef move_iterator<iterator> _Ip;
        assign(_Ip(__c.begin()), _Ip(__c.end()));
    }
    else
        __move_assign(__c, true_type());
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::__move_assign(list& __c, true_type)
        _NOEXCEPT_(is_nothrow_move_assignable<__node_allocator>::value)
{
    clear();
    base::__move_assign_alloc(__c);
    splice(end(), __c);
}

#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Tp, class _Alloc>
template <class _InpIter>
void
list<_Tp, _Alloc>::assign(_InpIter __f, _InpIter __l,
                          typename enable_if<__is_input_iterator<_InpIter>::value>::type*)
{
    iterator __i = begin();
    iterator __e = end();
    for (; __f != __l && __i != __e; ++__f, ++__i)
        *__i = *__f;
    if (__i == __e)
        insert(__e, __f, __l);
    else
        erase(__i, __e);
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::assign(size_type __n, const value_type& __x)
{
    iterator __i = begin();
    iterator __e = end();
    for (; __n > 0 && __i != __e; --__n, ++__i)
        *__i = __x;
    if (__i == __e)
        insert(__e, __n, __x);
    else
        erase(__i, __e);
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
_Alloc
list<_Tp, _Alloc>::get_allocator() const _NOEXCEPT
{
    return allocator_type(base::__node_alloc());
}

template <class _Tp, class _Alloc>
typename list<_Tp, _Alloc>::iterator
list<_Tp, _Alloc>::insert(const_iterator __p, const value_type& __x)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__p) == this,
        "list::insert(iterator, x) called with an iterator not"
        " referring to this list");
#endif
    __node_allocator& __na = base::__node_alloc();
    typedef __allocator_destructor<__node_allocator> _Dp;
    unique_ptr<__node, _Dp> __hold(__node_alloc_traits::allocate(__na, 1), _Dp(__na, 1));
    __hold->__prev_ = 0;
    __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), __x);
    __link_nodes(const_cast<__node&>(*__p.__ptr_), *__hold, *__hold);
    ++base::__sz();
    return iterator(__hold.release());
}

template <class _Tp, class _Alloc>
typename list<_Tp, _Alloc>::iterator
list<_Tp, _Alloc>::insert(const_iterator __p, size_type __n, const value_type& __x)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__p) == this,
        "list::insert(iterator, n, x) called with an iterator not"
        " referring to this list");
    iterator __r(const_cast<__node_pointer>(__p.__ptr_), this);
#else
    iterator __r(const_cast<__node_pointer>(__p.__ptr_));
#endif
    if (__n > 0)
    {
        size_type __ds = 0;
        __node_allocator& __na = base::__node_alloc();
        typedef __allocator_destructor<__node_allocator> _Dp;
        unique_ptr<__node, _Dp> __hold(__node_alloc_traits::allocate(__na, 1), _Dp(__na, 1));
        __hold->__prev_ = 0;
        __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), __x);
        ++__ds;
#if _LIBCPP_DEBUG_LEVEL >= 2
        __r = iterator(__hold.get(), this);
#else
        __r = iterator(__hold.get());
#endif
        __hold.release();
        iterator __e = __r;
#ifndef _LIBCPP_NO_EXCEPTIONS
        try
        {
#endif  // _LIBCPP_NO_EXCEPTIONS
            for (--__n; __n != 0; --__n, ++__e, ++__ds)
            {
                __hold.reset(__node_alloc_traits::allocate(__na, 1));
                __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), __x);
                __e.__ptr_->__next_ = __hold.get();
                __hold->__prev_ = __e.__ptr_;
                __hold.release();
            }
#ifndef _LIBCPP_NO_EXCEPTIONS
        }
        catch (...)
        {
            while (true)
            {
                __node_alloc_traits::destroy(__na, _VSTD::addressof(*__e));
                __node_pointer __prev = __e.__ptr_->__prev_;
                __node_alloc_traits::deallocate(__na, __e.__ptr_, 1);
                if (__prev == 0)
                    break;
#if _LIBCPP_DEBUG_LEVEL >= 2
                __e = iterator(__prev, this);
#else
                __e = iterator(__prev);
#endif
            }
            throw;
        }
#endif  // _LIBCPP_NO_EXCEPTIONS
        __link_nodes(const_cast<__node&>(*__p.__ptr_), *__r.__ptr_, *__e.__ptr_);
        base::__sz() += __ds;
    }
    return __r;
}

template <class _Tp, class _Alloc>
template <class _InpIter>
typename list<_Tp, _Alloc>::iterator
list<_Tp, _Alloc>::insert(const_iterator __p, _InpIter __f, _InpIter __l,
             typename enable_if<__is_input_iterator<_InpIter>::value>::type*)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__p) == this,
        "list::insert(iterator, range) called with an iterator not"
        " referring to this list");
    iterator __r(const_cast<__node_pointer>(__p.__ptr_), this);
#else
    iterator __r(const_cast<__node_pointer>(__p.__ptr_));
#endif
    if (__f != __l)
    {
        size_type __ds = 0;
        __node_allocator& __na = base::__node_alloc();
        typedef __allocator_destructor<__node_allocator> _Dp;
        unique_ptr<__node, _Dp> __hold(__node_alloc_traits::allocate(__na, 1), _Dp(__na, 1));
        __hold->__prev_ = 0;
        __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), *__f);
        ++__ds;
#if _LIBCPP_DEBUG_LEVEL >= 2
        __r = iterator(__hold.get(), this);
#else
        __r = iterator(__hold.get());
#endif
        __hold.release();
        iterator __e = __r;
#ifndef _LIBCPP_NO_EXCEPTIONS
        try
        {
#endif  // _LIBCPP_NO_EXCEPTIONS
            for (++__f; __f != __l; ++__f, ++__e, ++__ds)
            {
                __hold.reset(__node_alloc_traits::allocate(__na, 1));
                __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), *__f);
                __e.__ptr_->__next_ = __hold.get();
                __hold->__prev_ = __e.__ptr_;
                __hold.release();
            }
#ifndef _LIBCPP_NO_EXCEPTIONS
        }
        catch (...)
        {
            while (true)
            {
                __node_alloc_traits::destroy(__na, _VSTD::addressof(*__e));
                __node_pointer __prev = __e.__ptr_->__prev_;
                __node_alloc_traits::deallocate(__na, __e.__ptr_, 1);
                if (__prev == 0)
                    break;
#if _LIBCPP_DEBUG_LEVEL >= 2
                __e = iterator(__prev, this);
#else
                __e = iterator(__prev);
#endif
            }
            throw;
        }
#endif  // _LIBCPP_NO_EXCEPTIONS
        __link_nodes(const_cast<__node&>(*__p.__ptr_), *__r.__ptr_, *__e.__ptr_);
        base::__sz() += __ds;
    }
    return __r;
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::push_front(const value_type& __x)
{
    __node_allocator& __na = base::__node_alloc();
    typedef __allocator_destructor<__node_allocator> _Dp;
    unique_ptr<__node, _Dp> __hold(__node_alloc_traits::allocate(__na, 1), _Dp(__na, 1));
    __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), __x);
    __link_nodes(*base::__end_.__next_, *__hold, *__hold);
    ++base::__sz();
    __hold.release();
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::push_back(const value_type& __x)
{
    __node_allocator& __na = base::__node_alloc();
    typedef __allocator_destructor<__node_allocator> _Dp;
    unique_ptr<__node, _Dp> __hold(__node_alloc_traits::allocate(__na, 1), _Dp(__na, 1));
    __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), __x);
    __link_nodes(static_cast<__node&>(base::__end_), *__hold, *__hold);
    ++base::__sz();
    __hold.release();
}

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::push_front(value_type&& __x)
{
    __node_allocator& __na = base::__node_alloc();
    typedef __allocator_destructor<__node_allocator> _Dp;
    unique_ptr<__node, _Dp> __hold(__node_alloc_traits::allocate(__na, 1), _Dp(__na, 1));
    __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), _VSTD::move(__x));
    __link_nodes(*base::__end_.__next_, *__hold, *__hold);
    ++base::__sz();
    __hold.release();
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::push_back(value_type&& __x)
{
    __node_allocator& __na = base::__node_alloc();
    typedef __allocator_destructor<__node_allocator> _Dp;
    unique_ptr<__node, _Dp> __hold(__node_alloc_traits::allocate(__na, 1), _Dp(__na, 1));
    __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), _VSTD::move(__x));
    __link_nodes(static_cast<__node&>(base::__end_), *__hold, *__hold);
    ++base::__sz();
    __hold.release();
}

#ifndef _LIBCPP_HAS_NO_VARIADICS

template <class _Tp, class _Alloc>
template <class... _Args>
void
list<_Tp, _Alloc>::emplace_front(_Args&&... __args)
{
    __node_allocator& __na = base::__node_alloc();
    typedef __allocator_destructor<__node_allocator> _Dp;
    unique_ptr<__node, _Dp> __hold(__node_alloc_traits::allocate(__na, 1), _Dp(__na, 1));
    __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), _VSTD::forward<_Args>(__args)...);
    __link_nodes(*base::__end_.__next_, *__hold, *__hold);
    ++base::__sz();
    __hold.release();
}

template <class _Tp, class _Alloc>
template <class... _Args>
void
list<_Tp, _Alloc>::emplace_back(_Args&&... __args)
{
    __node_allocator& __na = base::__node_alloc();
    typedef __allocator_destructor<__node_allocator> _Dp;
    unique_ptr<__node, _Dp> __hold(__node_alloc_traits::allocate(__na, 1), _Dp(__na, 1));
    __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), _VSTD::forward<_Args>(__args)...);
    __link_nodes(static_cast<__node&>(base::__end_), *__hold, *__hold);
    ++base::__sz();
    __hold.release();
}

template <class _Tp, class _Alloc>
template <class... _Args>
typename list<_Tp, _Alloc>::iterator
list<_Tp, _Alloc>::emplace(const_iterator __p, _Args&&... __args)
{
    __node_allocator& __na = base::__node_alloc();
    typedef __allocator_destructor<__node_allocator> _Dp;
    unique_ptr<__node, _Dp> __hold(__node_alloc_traits::allocate(__na, 1), _Dp(__na, 1));
    __hold->__prev_ = 0;
    __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), _VSTD::forward<_Args>(__args)...);
    __link_nodes(const_cast<__node&>(*__p.__ptr_), *__hold, *__hold);
    ++base::__sz();
#if _LIBCPP_DEBUG_LEVEL >= 2
    return iterator(__hold.release(), this);
#else
    return iterator(__hold.release());
#endif
}

#endif  // _LIBCPP_HAS_NO_VARIADICS

template <class _Tp, class _Alloc>
typename list<_Tp, _Alloc>::iterator
list<_Tp, _Alloc>::insert(const_iterator __p, value_type&& __x)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__p) == this,
        "list::insert(iterator, x) called with an iterator not"
        " referring to this list");
#endif
    __node_allocator& __na = base::__node_alloc();
    typedef __allocator_destructor<__node_allocator> _Dp;
    unique_ptr<__node, _Dp> __hold(__node_alloc_traits::allocate(__na, 1), _Dp(__na, 1));
    __hold->__prev_ = 0;
    __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), _VSTD::move(__x));
    __link_nodes(const_cast<__node&>(*__p.__ptr_), *__hold, *__hold);
    ++base::__sz();
#if _LIBCPP_DEBUG_LEVEL >= 2
    return iterator(__hold.release(), this);
#else
    return iterator(__hold.release());
#endif
}

#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::pop_front()
{
    _LIBCPP_ASSERT(!empty(), "list::pop_front() called with empty list");
    __node_allocator& __na = base::__node_alloc();
    __node& __n = *base::__end_.__next_;
    base::__unlink_nodes(__n, __n);
    --base::__sz();
#if _LIBCPP_DEBUG_LEVEL >= 2
    __c_node* __c = __get_db()->__find_c_and_lock(this);
    for (__i_node** __p = __c->end_; __p != __c->beg_; )
    {
        --__p;
        iterator* __i = static_cast<iterator*>((*__p)->__i_);
        if (__i->__ptr_ == &__n)
        {
            (*__p)->__c_ = nullptr;
            if (--__c->end_ != __p)
                memmove(__p, __p+1, (__c->end_ - __p)*sizeof(__i_node*));
        }
    }
    __get_db()->unlock();
#endif
    __node_alloc_traits::destroy(__na, _VSTD::addressof(__n.__value_));
    __node_alloc_traits::deallocate(__na, _VSTD::addressof(__n), 1);
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::pop_back()
{
    _LIBCPP_ASSERT(!empty(), "list::pop_front() called with empty list");
    __node_allocator& __na = base::__node_alloc();
    __node& __n = *base::__end_.__prev_;
    base::__unlink_nodes(__n, __n);
    --base::__sz();
#if _LIBCPP_DEBUG_LEVEL >= 2
    __c_node* __c = __get_db()->__find_c_and_lock(this);
    for (__i_node** __p = __c->end_; __p != __c->beg_; )
    {
        --__p;
        iterator* __i = static_cast<iterator*>((*__p)->__i_);
        if (__i->__ptr_ == &__n)
        {
            (*__p)->__c_ = nullptr;
            if (--__c->end_ != __p)
                memmove(__p, __p+1, (__c->end_ - __p)*sizeof(__i_node*));
        }
    }
    __get_db()->unlock();
#endif
    __node_alloc_traits::destroy(__na, _VSTD::addressof(__n.__value_));
    __node_alloc_traits::deallocate(__na, _VSTD::addressof(__n), 1);
}

template <class _Tp, class _Alloc>
typename list<_Tp, _Alloc>::iterator
list<_Tp, _Alloc>::erase(const_iterator __p)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__p) == this,
        "list::erase(iterator) called with an iterator not"
        " referring to this list");
#endif
    __node_allocator& __na = base::__node_alloc();
    __node& __n = const_cast<__node&>(*__p.__ptr_);
    __node_pointer __r = __n.__next_;
    base::__unlink_nodes(__n, __n);
    --base::__sz();
#if _LIBCPP_DEBUG_LEVEL >= 2
    __c_node* __c = __get_db()->__find_c_and_lock(this);
    for (__i_node** __p = __c->end_; __p != __c->beg_; )
    {
        --__p;
        iterator* __i = static_cast<iterator*>((*__p)->__i_);
        if (__i->__ptr_ == &__n)
        {
            (*__p)->__c_ = nullptr;
            if (--__c->end_ != __p)
                memmove(__p, __p+1, (__c->end_ - __p)*sizeof(__i_node*));
        }
    }
    __get_db()->unlock();
#endif
    __node_alloc_traits::destroy(__na, _VSTD::addressof(__n.__value_));
    __node_alloc_traits::deallocate(__na, _VSTD::addressof(__n), 1);
#if _LIBCPP_DEBUG_LEVEL >= 2
    return iterator(__r, this);
#else
    return iterator(__r);
#endif
}

template <class _Tp, class _Alloc>
typename list<_Tp, _Alloc>::iterator
list<_Tp, _Alloc>::erase(const_iterator __f, const_iterator __l)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__f) == this,
        "list::erase(iterator, iterator) called with an iterator not"
        " referring to this list");
#endif
    if (__f != __l)
    {
        __node_allocator& __na = base::__node_alloc();
        base::__unlink_nodes(const_cast<__node&>(*__f.__ptr_), *__l.__ptr_->__prev_);
        while (__f != __l)
        {
            __node& __n = const_cast<__node&>(*__f.__ptr_);
            ++__f;
            --base::__sz();
#if _LIBCPP_DEBUG_LEVEL >= 2
            __c_node* __c = __get_db()->__find_c_and_lock(this);
            for (__i_node** __p = __c->end_; __p != __c->beg_; )
            {
                --__p;
                iterator* __i = static_cast<iterator*>((*__p)->__i_);
                if (__i->__ptr_ == &__n)
                {
                    (*__p)->__c_ = nullptr;
                    if (--__c->end_ != __p)
                        memmove(__p, __p+1, (__c->end_ - __p)*sizeof(__i_node*));
                }
            }
            __get_db()->unlock();
#endif
            __node_alloc_traits::destroy(__na, _VSTD::addressof(__n.__value_));
            __node_alloc_traits::deallocate(__na, _VSTD::addressof(__n), 1);
        }
    }
#if _LIBCPP_DEBUG_LEVEL >= 2
    return iterator(const_cast<__node_pointer>(__l.__ptr_), this);
#else
    return iterator(const_cast<__node_pointer>(__l.__ptr_));
#endif
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::resize(size_type __n)
{
    if (__n < base::__sz())
        erase(__iterator(__n), end());
    else if (__n > base::__sz())
    {
        __n -= base::__sz();
        size_type __ds = 0;
        __node_allocator& __na = base::__node_alloc();
        typedef __allocator_destructor<__node_allocator> _Dp;
        unique_ptr<__node, _Dp> __hold(__node_alloc_traits::allocate(__na, 1), _Dp(__na, 1));
        __hold->__prev_ = 0;
        __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_));
        ++__ds;
#if _LIBCPP_DEBUG_LEVEL >= 2
        iterator __r = iterator(__hold.release(), this);
#else
        iterator __r = iterator(__hold.release());
#endif
        iterator __e = __r;
#ifndef _LIBCPP_NO_EXCEPTIONS
        try
        {
#endif  // _LIBCPP_NO_EXCEPTIONS
            for (--__n; __n != 0; --__n, ++__e, ++__ds)
            {
                __hold.reset(__node_alloc_traits::allocate(__na, 1));
                __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_));
                __e.__ptr_->__next_ = __hold.get();
                __hold->__prev_ = __e.__ptr_;
                __hold.release();
            }
#ifndef _LIBCPP_NO_EXCEPTIONS
        }
        catch (...)
        {
            while (true)
            {
                __node_alloc_traits::destroy(__na, _VSTD::addressof(*__e));
                __node_pointer __prev = __e.__ptr_->__prev_;
                __node_alloc_traits::deallocate(__na, __e.__ptr_, 1);
                if (__prev == 0)
                    break;
#if _LIBCPP_DEBUG_LEVEL >= 2
                __e = iterator(__prev, this);
#else
                __e = iterator(__prev);
#endif
            }
            throw;
        }
#endif  // _LIBCPP_NO_EXCEPTIONS
        __link_nodes(static_cast<__node&>(base::__end_), *__r.__ptr_, *__e.__ptr_);
        base::__sz() += __ds;
    }
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::resize(size_type __n, const value_type& __x)
{
    if (__n < base::__sz())
        erase(__iterator(__n), end());
    else if (__n > base::__sz())
    {
        __n -= base::__sz();
        size_type __ds = 0;
        __node_allocator& __na = base::__node_alloc();
        typedef __allocator_destructor<__node_allocator> _Dp;
        unique_ptr<__node, _Dp> __hold(__node_alloc_traits::allocate(__na, 1), _Dp(__na, 1));
        __hold->__prev_ = 0;
        __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), __x);
        ++__ds;
#if _LIBCPP_DEBUG_LEVEL >= 2
        iterator __r = iterator(__hold.release(), this);
#else
        iterator __r = iterator(__hold.release());
#endif
        iterator __e = __r;
#ifndef _LIBCPP_NO_EXCEPTIONS
        try
        {
#endif  // _LIBCPP_NO_EXCEPTIONS
            for (--__n; __n != 0; --__n, ++__e, ++__ds)
            {
                __hold.reset(__node_alloc_traits::allocate(__na, 1));
                __node_alloc_traits::construct(__na, _VSTD::addressof(__hold->__value_), __x);
                __e.__ptr_->__next_ = __hold.get();
                __hold->__prev_ = __e.__ptr_;
                __hold.release();
            }
#ifndef _LIBCPP_NO_EXCEPTIONS
        }
        catch (...)
        {
            while (true)
            {
                __node_alloc_traits::destroy(__na, _VSTD::addressof(*__e));
                __node_pointer __prev = __e.__ptr_->__prev_;
                __node_alloc_traits::deallocate(__na, __e.__ptr_, 1);
                if (__prev == 0)
                    break;
#if _LIBCPP_DEBUG_LEVEL >= 2
                __e = iterator(__prev, this);
#else
                __e = iterator(__prev);
#endif
            }
            throw;
        }
#endif  // _LIBCPP_NO_EXCEPTIONS
        __link_nodes(static_cast<__node&>(base::__end_), *__r.__ptr_, *__e.__ptr_);
        base::__sz() += __ds;
    }
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::splice(const_iterator __p, list& __c)
{
    _LIBCPP_ASSERT(this != &__c,
                   "list::splice(iterator, list) called with this == &list");
#if _LIBCPP_DEBUG_LEVEL >= 2
    _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__p) == this,
        "list::splice(iterator, list) called with an iterator not"
        " referring to this list");
#endif
    if (!__c.empty())
    {
        __node& __f = *__c.__end_.__next_;
        __node& __l = *__c.__end_.__prev_;
        base::__unlink_nodes(__f, __l);
        __link_nodes(const_cast<__node&>(*__p.__ptr_), __f, __l);
        base::__sz() += __c.__sz();
        __c.__sz() = 0;
#if _LIBCPP_DEBUG_LEVEL >= 2
        __libcpp_db* __db = __get_db();
        __c_node* __cn1 = __db->__find_c_and_lock(this);
        __c_node* __cn2 = __db->__find_c(&__c);
        for (__i_node** __p = __cn2->end_; __p != __cn2->beg_;)
        {
            --__p;
            iterator* __i = static_cast<iterator*>((*__p)->__i_);
            if (__i->__ptr_ != static_cast<__node_pointer>(&__c.__end_))
            {
                __cn1->__add(*__p);
                (*__p)->__c_ = __cn1;
                if (--__cn2->end_ != __p)
                    memmove(__p, __p+1, (__cn2->end_ - __p)*sizeof(__i_node*));
            }
        }
        __db->unlock();
#endif
    }
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::splice(const_iterator __p, list& __c, const_iterator __i)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__p) == this,
        "list::splice(iterator, list, iterator) called with first iterator not"
        " referring to this list");
    _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__i) == &__c,
        "list::splice(iterator, list, iterator) called with second iterator not"
        " referring to list argument");
    _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(&__i),
        "list::splice(iterator, list, iterator) called with second iterator not"
        " derefereceable");
#endif
    if (__p.__ptr_ != __i.__ptr_ && __p.__ptr_ != __i.__ptr_->__next_)
    {
        __node& __f = const_cast<__node&>(*__i.__ptr_);
        base::__unlink_nodes(__f, __f);
        __link_nodes(const_cast<__node&>(*__p.__ptr_), __f, __f);
        --__c.__sz();
        ++base::__sz();
#if _LIBCPP_DEBUG_LEVEL >= 2
        __libcpp_db* __db = __get_db();
        __c_node* __cn1 = __db->__find_c_and_lock(this);
        __c_node* __cn2 = __db->__find_c(&__c);
        for (__i_node** __p = __cn2->end_; __p != __cn2->beg_;)
        {
            --__p;
            iterator* __j = static_cast<iterator*>((*__p)->__i_);
            if (__j->__ptr_ == &__f)
            {
                __cn1->__add(*__p);
                (*__p)->__c_ = __cn1;
                if (--__cn2->end_ != __p)
                    memmove(__p, __p+1, (__cn2->end_ - __p)*sizeof(__i_node*));
            }
        }
        __db->unlock();
#endif
    }
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::splice(const_iterator __p, list& __c, const_iterator __f, const_iterator __l)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__p) == this,
        "list::splice(iterator, list, iterator, iterator) called with first iterator not"
        " referring to this list");
    _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__f) == &__c,
        "list::splice(iterator, list, iterator, iterator) called with second iterator not"
        " referring to list argument");
    if (this == &__c)
    {
        for (const_iterator __i = __f; __i != __l; ++__i)
            _LIBCPP_ASSERT(__i != __p,
                           "list::splice(iterator, list, iterator, iterator)"
                           " called with the first iterator within the range"
                           " of the second and third iterators");
    }
#endif
    if (__f != __l)
    {
        if (this != &__c)
        {
            size_type __s = _VSTD::distance(__f, __l);
            __c.__sz() -= __s;
            base::__sz() += __s;
        }
        __node& __first = const_cast<__node&>(*__f.__ptr_);
        --__l;
        __node& __last = const_cast<__node&>(*__l.__ptr_);
        base::__unlink_nodes(__first, __last);
        __link_nodes(const_cast<__node&>(*__p.__ptr_), __first, __last);
#if _LIBCPP_DEBUG_LEVEL >= 2
        __libcpp_db* __db = __get_db();
        __c_node* __cn1 = __db->__find_c_and_lock(this);
        __c_node* __cn2 = __db->__find_c(&__c);
        for (__i_node** __p = __cn2->end_; __p != __cn2->beg_;)
        {
            --__p;
            iterator* __j = static_cast<iterator*>((*__p)->__i_);
            for (__node_pointer __k = const_cast<__node_pointer>(__f.__ptr_);
                                          __k != __l.__ptr_; __k = __k->__next_)
            {
                if (__j->__ptr_ == __k)
                {
                    __cn1->__add(*__p);
                    (*__p)->__c_ = __cn1;
                    if (--__cn2->end_ != __p)
                        memmove(__p, __p+1, (__cn2->end_ - __p)*sizeof(__i_node*));
                }
            }
        }
        __db->unlock();
#endif
    }
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::remove(const value_type& __x)
{
    for (iterator __i = begin(), __e = end(); __i != __e;)
    {
        if (*__i == __x)
        {
            iterator __j = _VSTD::next(__i);
            for (; __j != __e && *__j == __x; ++__j)
                ;
            __i = erase(__i, __j);
        }
        else
            ++__i;
    }
}

template <class _Tp, class _Alloc>
template <class _Pred>
void
list<_Tp, _Alloc>::remove_if(_Pred __pred)
{
    for (iterator __i = begin(), __e = end(); __i != __e;)
    {
        if (__pred(*__i))
        {
            iterator __j = _VSTD::next(__i);
            for (; __j != __e && __pred(*__j); ++__j)
                ;
            __i = erase(__i, __j);
        }
        else
            ++__i;
    }
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
void
list<_Tp, _Alloc>::unique()
{
    unique(__equal_to<value_type>());
}

template <class _Tp, class _Alloc>
template <class _BinaryPred>
void
list<_Tp, _Alloc>::unique(_BinaryPred __binary_pred)
{
    for (iterator __i = begin(), __e = end(); __i != __e;)
    {
        iterator __j = _VSTD::next(__i);
        for (; __j != __e && __binary_pred(*__i, *__j); ++__j)
            ;
        if (++__i != __j)
            __i = erase(__i, __j);
    }
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
void
list<_Tp, _Alloc>::merge(list& __c)
{
    merge(__c, __less<value_type>());
}

template <class _Tp, class _Alloc>
template <class _Comp>
void
list<_Tp, _Alloc>::merge(list& __c, _Comp __comp)
{
    if (this != &__c)
    {
        iterator __f1 = begin();
        iterator __e1 = end();
        iterator __f2 = __c.begin();
        iterator __e2 = __c.end();
        while (__f1 != __e1 && __f2 != __e2)
        {
            if (__comp(*__f2, *__f1))
            {
                size_type __ds = 1;
                iterator __m2 = _VSTD::next(__f2);
                for (; __m2 != __e2 && __comp(*__m2, *__f1); ++__m2, ++__ds)
                    ;
                base::__sz() += __ds;
                __c.__sz() -= __ds;
                __node& __f = *__f2.__ptr_;
                __node& __l = *__m2.__ptr_->__prev_;
                __f2 = __m2;
                base::__unlink_nodes(__f, __l);
                __m2 = _VSTD::next(__f1);
                __link_nodes(*__f1.__ptr_, __f, __l);
                __f1 = __m2;
            }
            else
                ++__f1;
        }
        splice(__e1, __c);
#if _LIBCPP_DEBUG_LEVEL >= 2
        __libcpp_db* __db = __get_db();
        __c_node* __cn1 = __db->__find_c_and_lock(this);
        __c_node* __cn2 = __db->__find_c(&__c);
        for (__i_node** __p = __cn2->end_; __p != __cn2->beg_;)
        {
            --__p;
            iterator* __i = static_cast<iterator*>((*__p)->__i_);
            if (__i->__ptr_ != static_cast<__node_pointer>(&__c.__end_))
            {
                __cn1->__add(*__p);
                (*__p)->__c_ = __cn1;
                if (--__cn2->end_ != __p)
                    memmove(__p, __p+1, (__cn2->end_ - __p)*sizeof(__i_node*));
            }
        }
        __db->unlock();
#endif
    }
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
void
list<_Tp, _Alloc>::sort()
{
    sort(__less<value_type>());
}

template <class _Tp, class _Alloc>
template <class _Comp>
inline _LIBCPP_INLINE_VISIBILITY
void
list<_Tp, _Alloc>::sort(_Comp __comp)
{
    __sort(begin(), end(), base::__sz(), __comp);
}

template <class _Tp, class _Alloc>
template <class _Comp>
typename list<_Tp, _Alloc>::iterator
list<_Tp, _Alloc>::__sort(iterator __f1, iterator __e2, size_type __n, _Comp& __comp)
{
    switch (__n)
    {
    case 0:
    case 1:
        return __f1;
    case 2:
        if (__comp(*--__e2, *__f1))
        {
            __node& __f = *__e2.__ptr_;
            base::__unlink_nodes(__f, __f);
            __link_nodes(*__f1.__ptr_, __f, __f);
            return __e2;
        }
        return __f1;
    }
    size_type __n2 = __n / 2;
    iterator __e1 = _VSTD::next(__f1, __n2);
    iterator  __r = __f1 = __sort(__f1, __e1, __n2, __comp);
    iterator __f2 = __e1 = __sort(__e1, __e2, __n - __n2, __comp);
    if (__comp(*__f2, *__f1))
    {
        iterator __m2 = _VSTD::next(__f2);
        for (; __m2 != __e2 && __comp(*__m2, *__f1); ++__m2)
            ;
        __node& __f = *__f2.__ptr_;
        __node& __l = *__m2.__ptr_->__prev_;
        __r = __f2;
        __e1 = __f2 = __m2;
        base::__unlink_nodes(__f, __l);
        __m2 = _VSTD::next(__f1);
        __link_nodes(*__f1.__ptr_, __f, __l);
        __f1 = __m2;
    }
    else
        ++__f1;
    while (__f1 != __e1 && __f2 != __e2)
    {
        if (__comp(*__f2, *__f1))
        {
            iterator __m2 = _VSTD::next(__f2);
            for (; __m2 != __e2 && __comp(*__m2, *__f1); ++__m2)
                ;
            __node& __f = *__f2.__ptr_;
            __node& __l = *__m2.__ptr_->__prev_;
            if (__e1 == __f2)
                __e1 = __m2;
            __f2 = __m2;
            base::__unlink_nodes(__f, __l);
            __m2 = _VSTD::next(__f1);
            __link_nodes(*__f1.__ptr_, __f, __l);
            __f1 = __m2;
        }
        else
            ++__f1;
    }
    return __r;
}

template <class _Tp, class _Alloc>
void
list<_Tp, _Alloc>::reverse() _NOEXCEPT
{
    if (base::__sz() > 1)
    {
        iterator __e = end();
        for (iterator __i = begin(); __i.__ptr_ != __e.__ptr_;)
        {
            _VSTD::swap(__i.__ptr_->__prev_, __i.__ptr_->__next_);
            __i.__ptr_ = __i.__ptr_->__prev_;
        }
        _VSTD::swap(__e.__ptr_->__prev_, __e.__ptr_->__next_);
    }
}

template <class _Tp, class _Alloc>
bool
list<_Tp, _Alloc>::__invariants() const
{
    return size() == _VSTD::distance(begin(), end());
}

#if _LIBCPP_DEBUG_LEVEL >= 2

template <class _Tp, class _Alloc>
bool
list<_Tp, _Alloc>::__dereferenceable(const const_iterator* __i) const
{
    return __i->__ptr_ != &this->__end_;
}

template <class _Tp, class _Alloc>
bool
list<_Tp, _Alloc>::__decrementable(const const_iterator* __i) const
{
    return !empty() &&  __i->__ptr_ != base::__end_.__next_;
}

template <class _Tp, class _Alloc>
bool
list<_Tp, _Alloc>::__addable(const const_iterator* __i, ptrdiff_t __n) const
{
    return false;
}

template <class _Tp, class _Alloc>
bool
list<_Tp, _Alloc>::__subscriptable(const const_iterator* __i, ptrdiff_t __n) const
{
    return false;
}

#endif  // _LIBCPP_DEBUG_LEVEL >= 2

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator==(const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y)
{
    return __x.size() == __y.size() && _VSTD::equal(__x.begin(), __x.end(), __y.begin());
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator< (const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y)
{
    return _VSTD::lexicographical_compare(__x.begin(), __x.end(), __y.begin(), __y.end());
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator!=(const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y)
{
    return !(__x == __y);
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator> (const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y)
{
    return __y < __x;
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator>=(const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y)
{
    return !(__x < __y);
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator<=(const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y)
{
    return !(__y < __x);
}

template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
void
swap(list<_Tp, _Alloc>& __x, list<_Tp, _Alloc>& __y)
    _NOEXCEPT_(_NOEXCEPT_(__x.swap(__y)))
{
    __x.swap(__y);
}

_LIBCPP_END_NAMESPACE_STD

#endif  // _LIBCPP_LIST
@


1.2.2.3
log
@## SVN ##
## SVN ## Exported commit - http://svnweb.freebsd.org/changeset/base/ 243376
## SVN ## CVS IS DEPRECATED: http://wiki.freebsd.org/CvsIsDeprecated
## SVN ##
## SVN ## ------------------------------------------------------------------------
## SVN ## r243376 | dim | 2012-11-21 18:38:56 +0000 (Wed, 21 Nov 2012) | 14 lines
## SVN ##
## SVN ## MFC r241903:
## SVN ##
## SVN ##   Import libc++ trunk r165949.  Among other improvements and bug fixes,
## SVN ##   this has many visibility problems fixed, which should help with
## SVN ##   compiling certain ports that exercise C++11 mode (i.e. Firefox).
## SVN ##
## SVN ##   Also, belatedly add the LICENSE.TXT and accompanying CREDITS.TXT files,
## SVN ##   which are referred to in all the source files.
## SVN ##
## SVN ## MFC r241907:
## SVN ##
## SVN ##   Fix two -Wsystem-header warnings in libc++ that were exposed by the new
## SVN ##   ATF import.  These have also been sent upstream.
## SVN ##
## SVN ## ------------------------------------------------------------------------
## SVN ##
@
text
@d216 1
a216 1
template <class _Tp, class _Alloc> class _LIBCPP_VISIBLE list;
d218 1
a218 1
template <class _Tp, class _VoidPtr> class _LIBCPP_VISIBLE __list_const_iterator;
@


1.2.2.4
log
@## SVN ## Exported commit - http://svnweb.freebsd.org/changeset/base/250514
## SVN ## CVS IS DEPRECATED: http://wiki.freebsd.org/CvsIsDeprecated
@
text
@d216 1
a216 1
template <class _Tp, class _Alloc> class _LIBCPP_TYPE_VIS list;
d218 1
a218 1
template <class _Tp, class _VoidPtr> class _LIBCPP_TYPE_VIS __list_const_iterator;
d221 1
a221 1
class _LIBCPP_TYPE_VIS __list_iterator
d351 1
a351 1
class _LIBCPP_TYPE_VIS __list_const_iterator
d397 1
a397 1
    __list_const_iterator(const __list_iterator<_Tp, _VoidPtr>& __p) _NOEXCEPT
d770 1
a770 1
class _LIBCPP_TYPE_VIS list
a1294 3
#if _LIBCPP_DEBUG_LEVEL >= 2
    return iterator(__hold.release(), this);
#else
a1295 1
#endif
a1520 5
#if _LIBCPP_DEBUG_LEVEL >= 2
    _LIBCPP_ASSERT(__get_const_db()->__find_c_from_i(&__p) == this,
        "list::emplace(iterator, args...) called with an iterator not"
        " referring to this list");
#endif
a1626 2
    _LIBCPP_ASSERT(__p != end(),
        "list::erase(iterator) called with a non-dereferenceable iterator");
@


1.2.2.5
log
@## SVN ## Exported commit - http://svnweb.freebsd.org/changeset/base/253222
## SVN ## CVS IS DEPRECATED: http://wiki.freebsd.org/CvsIsDeprecated
@
text
@a198 7
    typedef typename pointer_traits<_VoidPtr>::template
#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
        rebind<__list_node_base> __base_pointer;
#else
        rebind<__list_node_base>::other __base_pointer;
#endif

d204 2
a205 2
        : __prev_(static_cast<pointer>(pointer_traits<__base_pointer>::pointer_to(*this))),
          __next_(static_cast<pointer>(pointer_traits<__base_pointer>::pointer_to(*this)))
d308 1
a308 8
    pointer operator->() const
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this),
                       "Attempted to dereference a non-dereferenceable list::iterator");
#endif
        return pointer_traits<pointer>::pointer_to(__ptr_->__value_);
    }
d355 1
a355 1
        rebind<__list_node<_Tp, _VoidPtr> > __node_pointer;
d357 1
a357 1
        rebind<__list_node<_Tp, _VoidPtr> >::other __node_pointer;
d442 1
a442 8
    pointer operator->() const
    {
#if _LIBCPP_DEBUG_LEVEL >= 2
        _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this),
                       "Attempted to dereference a non-dereferenceable list::iterator");
#endif
        return pointer_traits<pointer>::pointer_to(__ptr_->__value_);
    }
d508 1
a508 1
    typedef typename __node_alloc_traits::pointer                    __node_const_pointer;
a512 9
    typedef typename __alloc_traits::template
#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
                rebind_alloc<__node_base>
#else
                rebind_alloc<__node_base>::other
#endif
                                                                     __node_base_allocator;
    typedef typename allocator_traits<__node_base_allocator>::pointer __node_base_pointer;

d528 1
a528 1
    static void __unlink_nodes(__node_pointer __f, __node_pointer __l) _NOEXCEPT;
d560 1
a560 2
        return iterator(static_cast<__node_pointer>(
                pointer_traits<__node_base_pointer>::pointer_to(__end_)), this);
d562 1
a562 2
        return iterator(static_cast<__node_pointer>(
                      pointer_traits<__node_base_pointer>::pointer_to(__end_)));
d569 1
a569 2
        return const_iterator(static_cast<__node_const_pointer>(
        pointer_traits<__node_base_pointer>::pointer_to(const_cast<__node_base&>(__end_))), this);
d571 1
a571 2
        return const_iterator(static_cast<__node_const_pointer>(
        pointer_traits<__node_base_pointer>::pointer_to(const_cast<__node_base&>(__end_))));
d640 1
a640 1
__list_imp<_Tp, _Alloc>::__unlink_nodes(__node_pointer __f, __node_pointer __l)
d643 2
a644 2
    __f->__prev_->__next_ = __l->__next_;
    __l->__next_->__prev_ = __f->__prev_;
d679 2
a680 3
        __node_pointer __l = static_cast<__node_pointer>(
                       pointer_traits<__node_base_pointer>::pointer_to(__end_));
        __unlink_nodes(__f, __l->__prev_);
d684 1
a684 1
            __node_pointer __n = __f;
d686 2
a687 2
            __node_alloc_traits::destroy(__na, _VSTD::addressof(__n->__value_));
            __node_alloc_traits::deallocate(__na, __n, 1);
d722 1
a722 2
        __end_.__next_ = __end_.__prev_ = static_cast<__node_pointer>(
                       pointer_traits<__node_base_pointer>::pointer_to(__end_));
d725 1
a725 2
                                = static_cast<__node_pointer>(
                       pointer_traits<__node_base_pointer>::pointer_to(__end_));
d728 1
a728 2
                           = static_cast<__node_pointer>(
                       pointer_traits<__node_base_pointer>::pointer_to(__c.__end_));
d731 1
a731 2
                                    = static_cast<__node_pointer>(
                       pointer_traits<__node_base_pointer>::pointer_to(__c.__end_));
d743 1
a743 2
        if (__i->__ptr_ == static_cast<__node_pointer>(
                       pointer_traits<__node_base_pointer>::pointer_to(__c.__end_)))
d756 1
a756 2
        if (__i->__ptr_ == static_cast<__node_pointer>(
                       pointer_traits<__node_base_pointer>::pointer_to(__end_)))
a777 2
    typedef typename base::__node_base         __node_base;
    typedef typename base::__node_base_pointer __node_base_pointer;
d1017 1
a1017 1
    static void __link_nodes(__node_pointer __p, __node_pointer __f, __node_pointer __l);
d1031 1
a1031 1
list<_Tp, _Alloc>::__link_nodes(__node_pointer __p, __node_pointer __f, __node_pointer __l)
d1033 4
a1036 4
    __p->__prev_->__next_ = __f;
    __f->__prev_ = __p->__prev_;
    __p->__prev_ = __l;
    __l->__next_ = __p;
d1293 1
a1293 1
    __link_nodes(__p.__ptr_, __hold.get(), __hold.get());
d1310 1
a1310 1
    iterator __r(__p.__ptr_, this);
d1312 1
a1312 1
    iterator __r(__p.__ptr_);
d1362 1
a1362 1
        __link_nodes(__p.__ptr_, __r.__ptr_, __e.__ptr_);
d1378 1
a1378 1
    iterator __r(__p.__ptr_, this);
d1380 1
a1380 1
    iterator __r(__p.__ptr_);
d1430 1
a1430 1
        __link_nodes(__p.__ptr_, __r.__ptr_, __e.__ptr_);
d1444 1
a1444 1
    __link_nodes(base::__end_.__next_, __hold.get(), __hold.get());
d1457 1
a1457 2
    __link_nodes(static_cast<__node_pointer>(pointer_traits<__node_base_pointer>::
                         pointer_to(base::__end_)), __hold.get(), __hold.get());
d1472 1
a1472 1
    __link_nodes(base::__end_.__next_, __hold.get(), __hold.get());
d1485 1
a1485 2
    __link_nodes(static_cast<__node_pointer>(pointer_traits<__node_base_pointer>::
                         pointer_to(base::__end_)), __hold.get(), __hold.get());
d1501 1
a1501 1
    __link_nodes(base::__end_.__next_, __hold.get(), __hold.get());
d1515 1
a1515 2
    __link_nodes(static_cast<__node_pointer>(pointer_traits<__node_base_pointer>::
                         pointer_to(base::__end_)), __hold.get(), __hold.get());
d1535 1
a1535 1
    __link_nodes(__p.__ptr_, __hold.get(), __hold.get());
d1560 1
a1560 1
    __link_nodes(__p.__ptr_, __hold.get(), __hold.get());
d1577 1
a1577 1
    __node_pointer __n = base::__end_.__next_;
d1586 1
a1586 1
        if (__i->__ptr_ == __n)
d1595 2
a1596 2
    __node_alloc_traits::destroy(__na, _VSTD::addressof(__n->__value_));
    __node_alloc_traits::deallocate(__na, __n, 1);
d1603 1
a1603 1
    _LIBCPP_ASSERT(!empty(), "list::pop_back() called with empty list");
d1605 1
a1605 1
    __node_pointer __n = base::__end_.__prev_;
d1614 1
a1614 1
        if (__i->__ptr_ == __n)
d1623 2
a1624 2
    __node_alloc_traits::destroy(__na, _VSTD::addressof(__n->__value_));
    __node_alloc_traits::deallocate(__na, __n, 1);
d1639 2
a1640 2
    __node_pointer __n = __p.__ptr_;
    __node_pointer __r = __n->__next_;
d1649 1
a1649 1
        if (__i->__ptr_ == __n)
d1658 2
a1659 2
    __node_alloc_traits::destroy(__na, _VSTD::addressof(__n->__value_));
    __node_alloc_traits::deallocate(__na, __n, 1);
d1679 1
a1679 1
        base::__unlink_nodes(__f.__ptr_, __l.__ptr_->__prev_);
d1682 1
a1682 1
            __node_pointer __n = __f.__ptr_;
d1691 1
a1691 1
                if (__i->__ptr_ == __n)
d1700 2
a1701 2
            __node_alloc_traits::destroy(__na, _VSTD::addressof(__n->__value_));
            __node_alloc_traits::deallocate(__na, __n, 1);
d1705 1
a1705 1
    return iterator(__l.__ptr_, this);
d1707 1
a1707 1
    return iterator(__l.__ptr_);
d1765 1
a1765 2
        __link_nodes(static_cast<__node_pointer>(pointer_traits<__node_base_pointer>::
                         pointer_to(base::__end_)), __r.__ptr_, __e.__ptr_);
d1824 1
a1824 2
        __link_nodes(static_cast<__node_pointer>(pointer_traits<__node_base_pointer>::
                         pointer_to(base::__end_)), __r.__ptr_, __e.__ptr_);
d1842 2
a1843 2
        __node_pointer __f = __c.__end_.__next_;
        __node_pointer __l = __c.__end_.__prev_;
d1845 1
a1845 1
        __link_nodes(__p.__ptr_, __f, __l);
d1856 1
a1856 2
            if (__i->__ptr_ != static_cast<__node_pointer>(
                       pointer_traits<__node_base_pointer>::pointer_to(__c.__end_)))
d1886 1
a1886 1
        __node_pointer __f = __i.__ptr_;
d1888 1
a1888 1
        __link_nodes(__p.__ptr_, __f, __f);
d1899 1
a1899 1
            if (__j->__ptr_ == __f)
d1940 1
a1940 1
        __node_pointer __first = __f.__ptr_;
d1942 1
a1942 1
        __node_pointer __last = __l.__ptr_;
d1944 1
a1944 1
        __link_nodes(__p.__ptr_, __first, __last);
d1953 1
a1953 1
            for (__node_pointer __k = __f.__ptr_;
d2059 2
a2060 2
                __node_pointer __f = __f2.__ptr_;
                __node_pointer __l = __m2.__ptr_->__prev_;
d2064 1
a2064 1
                __link_nodes(__f1.__ptr_, __f, __l);
d2079 1
a2079 2
            if (__i->__ptr_ != static_cast<__node_pointer>(
                       pointer_traits<__node_base_pointer>::pointer_to(__c.__end_)))
d2122 1
a2122 1
            __node_pointer __f = __e2.__ptr_;
d2124 1
a2124 1
            __link_nodes(__f1.__ptr_, __f, __f);
d2138 2
a2139 2
        __node_pointer __f = __f2.__ptr_;
        __node_pointer __l = __m2.__ptr_->__prev_;
d2144 1
a2144 1
        __link_nodes(__f1.__ptr_, __f, __l);
d2156 2
a2157 2
            __node_pointer __f = __f2.__ptr_;
            __node_pointer __l = __m2.__ptr_->__prev_;
d2163 1
a2163 1
            __link_nodes(__f1.__ptr_, __f, __l);
d2201 1
a2201 2
    return __i->__ptr_ != static_cast<__node_pointer>(
                       pointer_traits<__node_base_pointer>::pointer_to(const_cast<__node_base&>(this->__end_)));
@


1.2.2.6
log
@## SVN ## Exported commit - http://svnweb.freebsd.org/changeset/base/262801
## SVN ## CVS IS DEPRECATED: http://wiki.freebsd.org/CvsIsDeprecated
@
text
@a42 1
    explicit list(size_type n, const allocator_type& a); // C++14
a180 6
#ifdef _LIBCPP_DEBUG
#   include <__debug>
#else
#   define _LIBCPP_ASSERT(x, m) ((void)0)
#endif

d223 1
a223 1
template <class _Tp, class _Alloc> class _LIBCPP_TYPE_VIS_ONLY list;
d225 1
a225 1
template <class _Tp, class _VoidPtr> class _LIBCPP_TYPE_VIS_ONLY __list_const_iterator;
d228 1
a228 1
class _LIBCPP_TYPE_VIS_ONLY __list_iterator
d270 1
a270 1
    __list_iterator() _NOEXCEPT : __ptr_(nullptr)
d353 4
d365 1
a365 1
class _LIBCPP_TYPE_VIS_ONLY __list_const_iterator
d404 1
a404 1
    __list_const_iterator() _NOEXCEPT : __ptr_(nullptr)
d494 4
d811 1
a811 1
class _LIBCPP_TYPE_VIS_ONLY list
d847 1
a847 1
    explicit list(const allocator_type& __a) : base(__a)
d853 1
a853 4
    explicit list(size_type __n);
#if _LIBCPP_STD_VER > 11
    explicit list(size_type __n, const allocator_type& __a);
#endif
a1104 16
#if _LIBCPP_STD_VER > 11
template <class _Tp, class _Alloc>
list<_Tp, _Alloc>::list(size_type __n, const allocator_type& __a) : base(__a)
{
#if _LIBCPP_DEBUG_LEVEL >= 2
    __get_db()->__insert_c(this);
#endif
    for (; __n > 0; --__n)
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
        emplace_back();
#else
        push_back(value_type());
#endif
}
#endif

@


1.1
log
@SVN rev 227983 on 2011-11-25 20:59:04Z by theraven

Import libc++ / libcxxrt into base.  Not build by default yet (use
MK_LIBCPLUSPLUS=yes to enable).  This is a work-in-progress.  It works for
me, but is not guaranteed to work for anyone else and may eat your dog.

To build C++ using libc++, add -stdlib=libc++ to your CXX and LD flags.

Bug reports welcome, bug fixes even more welcome...

Approved by:	dim (mentor)
@
text
@d179 2
d1198 2
a1199 2
        typedef move_iterator<iterator> _I;
        assign(_I(__c.begin()), _I(__c.end()));
d1222 2
a1223 2
        typedef move_iterator<iterator> _I;
        assign(_I(__c.begin()), _I(__c.end()));
d1289 2
a1290 2
    typedef __allocator_destructor<__node_allocator> _D;
    unique_ptr<__node, _D> __hold(__node_alloc_traits::allocate(__na, 1), _D(__na, 1));
d1314 2
a1315 2
        typedef __allocator_destructor<__node_allocator> _D;
        unique_ptr<__node, _D> __hold(__node_alloc_traits::allocate(__na, 1), _D(__na, 1));
d1382 2
a1383 2
        typedef __allocator_destructor<__node_allocator> _D;
        unique_ptr<__node, _D> __hold(__node_alloc_traits::allocate(__na, 1), _D(__na, 1));
d1437 2
a1438 2
    typedef __allocator_destructor<__node_allocator> _D;
    unique_ptr<__node, _D> __hold(__node_alloc_traits::allocate(__na, 1), _D(__na, 1));
d1450 2
a1451 2
    typedef __allocator_destructor<__node_allocator> _D;
    unique_ptr<__node, _D> __hold(__node_alloc_traits::allocate(__na, 1), _D(__na, 1));
d1465 2
a1466 2
    typedef __allocator_destructor<__node_allocator> _D;
    unique_ptr<__node, _D> __hold(__node_alloc_traits::allocate(__na, 1), _D(__na, 1));
d1478 2
a1479 2
    typedef __allocator_destructor<__node_allocator> _D;
    unique_ptr<__node, _D> __hold(__node_alloc_traits::allocate(__na, 1), _D(__na, 1));
d1494 2
a1495 2
    typedef __allocator_destructor<__node_allocator> _D;
    unique_ptr<__node, _D> __hold(__node_alloc_traits::allocate(__na, 1), _D(__na, 1));
d1508 2
a1509 2
    typedef __allocator_destructor<__node_allocator> _D;
    unique_ptr<__node, _D> __hold(__node_alloc_traits::allocate(__na, 1), _D(__na, 1));
d1522 2
a1523 2
    typedef __allocator_destructor<__node_allocator> _D;
    unique_ptr<__node, _D> __hold(__node_alloc_traits::allocate(__na, 1), _D(__na, 1));
d1547 2
a1548 2
    typedef __allocator_destructor<__node_allocator> _D;
    unique_ptr<__node, _D> __hold(__node_alloc_traits::allocate(__na, 1), _D(__na, 1));
d1711 2
a1712 2
        typedef __allocator_destructor<__node_allocator> _D;
        unique_ptr<__node, _D> __hold(__node_alloc_traits::allocate(__na, 1), _D(__na, 1));
d1770 2
a1771 2
        typedef __allocator_destructor<__node_allocator> _D;
        unique_ptr<__node, _D> __hold(__node_alloc_traits::allocate(__na, 1), _D(__na, 1));
@

