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diff --git a/libstdc++-v3/include/ext/pb_ds/detail/binary_heap_/binary_heap_.hpp b/libstdc++-v3/include/ext/pb_ds/detail/binary_heap_/binary_heap_.hpp
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+++ b/libstdc++-v3/include/ext/pb_ds/detail/binary_heap_/binary_heap_.hpp
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+// -*- C++ -*-
+
+// Copyright (C) 2005, 2006, 2009 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the terms
+// of the GNU General Public License as published by the Free Software
+// Foundation; either version 3, or (at your option) any later
+// version.
+
+// This library is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
+
+// Permission to use, copy, modify, sell, and distribute this software
+// is hereby granted without fee, provided that the above copyright
+// notice appears in all copies, and that both that copyright notice
+// and this permission notice appear in supporting documentation. None
+// of the above authors, nor IBM Haifa Research Laboratories, make any
+// representation about the suitability of this software for any
+// purpose. It is provided "as is" without express or implied
+// warranty.
+
+/**
+ * @file binary_heap_.hpp
+ * Contains an implementation class for a binary heap.
+ */
+
+#ifndef PB_DS_BINARY_HEAP_HPP
+#define PB_DS_BINARY_HEAP_HPP
+
+/*
+ * Based on CLRS.
+ */
+
+#include <queue>
+#include <algorithm>
+#include <ext/pb_ds/detail/cond_dealtor.hpp>
+#include <ext/pb_ds/detail/cond_dealtor.hpp>
+#include <ext/pb_ds/detail/type_utils.hpp>
+#include <ext/pb_ds/detail/binary_heap_/entry_cmp.hpp>
+#include <ext/pb_ds/detail/binary_heap_/entry_pred.hpp>
+#include <ext/pb_ds/detail/binary_heap_/resize_policy.hpp>
+#include <ext/pb_ds/detail/binary_heap_/const_point_iterator.hpp>
+#include <ext/pb_ds/detail/binary_heap_/const_iterator.hpp>
+#ifdef PB_DS_BINARY_HEAP_TRACE_
+#include <iostream>
+#endif
+#include <ext/pb_ds/detail/type_utils.hpp>
+#include <debug/debug.h>
+
+namespace __gnu_pbds
+{
+  namespace detail
+  {
+#define PB_DS_CLASS_T_DEC \
+    template<typename Value_Type, class Cmp_Fn, class Allocator>
+
+#define PB_DS_CLASS_C_DEC \
+    binary_heap_<Value_Type, Cmp_Fn, Allocator>
+
+#define PB_DS_ENTRY_CMP_DEC \
+    entry_cmp<Value_Type, Cmp_Fn, is_simple<Value_Type>::value, Allocator>::type
+
+#define PB_DS_RESIZE_POLICY_DEC	\
+    __gnu_pbds::detail::resize_policy<typename Allocator::size_type>
+
+    /**
+     * class description = "Base class for some types of h3ap$">
+     **/
+    template<typename Value_Type, class Cmp_Fn, class Allocator>
+    class binary_heap_ : public PB_DS_ENTRY_CMP_DEC,
+			 public PB_DS_RESIZE_POLICY_DEC
+    {
+
+    private:
+      enum
+	{
+	  simple_value = is_simple<Value_Type>::value
+	};
+
+      typedef integral_constant<int, simple_value> no_throw_copies_t;
+
+      typedef
+      typename Allocator::template rebind<
+	Value_Type>::other
+      value_allocator;
+
+      typedef
+      typename __conditional_type<
+	simple_value,
+	Value_Type,
+	typename value_allocator::pointer>::__type
+      entry;
+
+      typedef
+      typename Allocator::template rebind<
+	entry>::other
+      entry_allocator;
+
+      typedef typename entry_allocator::pointer entry_pointer;
+
+      typedef typename PB_DS_ENTRY_CMP_DEC entry_cmp;
+
+      typedef PB_DS_RESIZE_POLICY_DEC resize_policy;
+
+      typedef
+      cond_dealtor<
+	Value_Type,
+	Allocator>
+      cond_dealtor_t;
+
+    public:
+
+      typedef typename Allocator::size_type size_type;
+
+      typedef typename Allocator::difference_type difference_type;
+
+      typedef Value_Type value_type;
+
+      typedef
+      typename Allocator::template rebind<
+	value_type>::other::pointer
+      pointer;
+
+      typedef
+      typename Allocator::template rebind<
+	value_type>::other::const_pointer
+      const_pointer;
+
+      typedef
+      typename Allocator::template rebind<
+	value_type>::other::reference
+      reference;
+
+      typedef
+      typename Allocator::template rebind<
+	value_type>::other::const_reference
+      const_reference;
+
+      typedef
+      binary_heap_const_point_iterator_<
+	value_type,
+	entry,
+	simple_value,
+	Allocator>
+      const_point_iterator;
+
+      typedef const_point_iterator point_iterator;
+
+      typedef
+      binary_heap_const_iterator_<
+	value_type,
+	entry,
+	simple_value,
+	Allocator>
+      const_iterator;
+
+      typedef const_iterator iterator;
+
+      typedef Cmp_Fn cmp_fn;
+
+      typedef Allocator allocator_type;
+
+    public:
+
+      binary_heap_();
+
+      binary_heap_(const Cmp_Fn& r_cmp_fn);
+
+      binary_heap_(const PB_DS_CLASS_C_DEC& other);
+
+      void
+      swap(PB_DS_CLASS_C_DEC& other);
+
+      ~binary_heap_();
+
+      inline bool
+      empty() const;
+
+      inline size_type
+      size() const;
+
+      inline size_type
+      max_size() const;
+
+      Cmp_Fn& 
+      get_cmp_fn();
+
+      const Cmp_Fn& 
+      get_cmp_fn() const;
+
+      inline point_iterator
+      push(const_reference r_val);
+
+      void
+      modify(point_iterator it, const_reference r_new_val);
+
+      inline const_reference
+      top() const;
+
+      inline void
+      pop();
+
+      inline void
+      erase(point_iterator it);
+
+      template<typename Pred>
+      typename PB_DS_CLASS_C_DEC::size_type
+      erase_if(Pred pred);
+
+      inline static void
+      erase_at(entry_pointer a_entries, size_type size, false_type);
+
+      inline static void
+      erase_at(entry_pointer a_entries, size_type size, true_type);
+
+      inline iterator
+      begin();
+
+      inline const_iterator
+      begin() const;
+
+      inline iterator
+      end();
+
+      inline const_iterator
+      end() const;
+
+      void
+      clear();
+
+      template<typename Pred>
+      void
+      split(Pred pred, PB_DS_CLASS_C_DEC& other);
+
+      void
+      join(PB_DS_CLASS_C_DEC& other);
+
+#ifdef PB_DS_BINARY_HEAP_TRACE_
+      void
+      trace() const;
+#endif 
+
+    protected:
+
+      template<typename It>
+      void
+      copy_from_range(It first_it, It last_it);
+
+    private:
+
+      void
+      value_swap(PB_DS_CLASS_C_DEC& other);
+
+      inline void
+      insert_value(const_reference r_val, false_type);
+
+      inline void
+      insert_value(value_type val, true_type);
+
+      inline void
+      insert_entry(entry e);
+
+      inline void
+      resize_for_insert_if_needed();
+
+      inline void
+      swap_value_imp(entry_pointer p_e, value_type new_val, true_type);
+
+      inline void
+      swap_value_imp(entry_pointer p_e, const_reference r_new_val, false_type);
+
+      void
+      fix(entry_pointer p_e);
+
+      inline const_reference
+      top_imp(true_type) const;
+
+      inline const_reference
+      top_imp(false_type) const;
+
+      inline static size_type
+      left_child(size_type i);
+
+      inline static size_type
+      right_child(size_type i);
+
+      inline static size_type
+      parent(size_type i);
+
+      inline void
+      resize_for_erase_if_needed();
+
+      template<typename Pred>
+      size_type
+      partition(Pred pred);
+
+#ifdef _GLIBCXX_DEBUG
+      void
+      assert_valid() const;
+#endif 
+
+#ifdef PB_DS_BINARY_HEAP_TRACE_
+      void
+      trace_entry(const entry& r_e, false_type) const;
+
+      void
+      trace_entry(const entry& r_e, true_type) const;
+#endif 
+
+    private:
+      static entry_allocator s_entry_allocator;
+
+      static value_allocator s_value_allocator;
+
+      static no_throw_copies_t s_no_throw_copies_ind;
+
+      size_type m_size;
+
+      size_type m_actual_size;
+
+      entry_pointer m_a_entries;
+    };
+
+#include <ext/pb_ds/detail/binary_heap_/insert_fn_imps.hpp>
+#include <ext/pb_ds/detail/binary_heap_/constructors_destructor_fn_imps.hpp>
+#include <ext/pb_ds/detail/binary_heap_/iterators_fn_imps.hpp>
+#include <ext/pb_ds/detail/binary_heap_/debug_fn_imps.hpp>
+#include <ext/pb_ds/detail/binary_heap_/trace_fn_imps.hpp>
+#include <ext/pb_ds/detail/binary_heap_/erase_fn_imps.hpp>
+#include <ext/pb_ds/detail/binary_heap_/info_fn_imps.hpp>
+#include <ext/pb_ds/detail/binary_heap_/find_fn_imps.hpp>
+#include <ext/pb_ds/detail/binary_heap_/split_join_fn_imps.hpp>
+#include <ext/pb_ds/detail/binary_heap_/policy_access_fn_imps.hpp>
+
+#undef PB_DS_CLASS_C_DEC
+#undef PB_DS_CLASS_T_DEC
+#undef PB_DS_ENTRY_CMP_DEC
+#undef PB_DS_RESIZE_POLICY_DEC
+
+  } // namespace detail
+} // namespace __gnu_pbds
+
+#endif