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diff --git a/i686-linux-gnu-4.7/usr/include/c++/4.7/ext/pb_ds/detail/debug_map_base.hpp b/i686-linux-gnu-4.7/usr/include/c++/4.7/ext/pb_ds/detail/debug_map_base.hpp
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+++ b/i686-linux-gnu-4.7/usr/include/c++/4.7/ext/pb_ds/detail/debug_map_base.hpp
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+// -*- C++ -*-
+
+// Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011
+// 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 detail/debug_map_base.hpp
+ * Contains a debug-mode base for all maps.
+ */
+
+#ifndef PB_DS_DEBUG_MAP_BASE_HPP
+#define PB_DS_DEBUG_MAP_BASE_HPP
+
+#ifdef _GLIBCXX_DEBUG
+
+#include <list>
+#include <utility>
+#include <cstdlib>
+#include <iostream>
+#include <ext/throw_allocator.h>
+#include <debug/debug.h>
+
+namespace __gnu_pbds
+{
+  namespace detail
+  {
+    // Need std::pair ostream extractor.
+    template<typename _CharT, typename _Traits, typename _Tp1, typename _Tp2>
+    inline std::basic_ostream<_CharT, _Traits>&
+    operator<<(std::basic_ostream<_CharT, _Traits>& __out,
+	       const std::pair<_Tp1, _Tp2>& p)
+    { return (__out << '(' << p.first << ',' << p.second << ')'); }
+
+#define PB_DS_CLASS_T_DEC \
+    template<typename Key, typename Eq_Fn, typename Const_Key_Reference>
+
+#define PB_DS_CLASS_C_DEC \
+    debug_map_base<Key, Eq_Fn, Const_Key_Reference>
+
+    /// Debug base class.
+    template<typename Key, typename Eq_Fn, typename Const_Key_Reference>
+    class debug_map_base
+    {
+    private:
+      typedef Const_Key_Reference 			key_const_reference;
+      typedef std::_GLIBCXX_STD_C::list<Key> 		key_repository;
+      typedef typename key_repository::size_type       	size_type;
+      typedef typename key_repository::iterator	       	iterator;
+      typedef typename key_repository::const_iterator  	const_iterator;
+
+    protected:
+      debug_map_base();
+
+      debug_map_base(const PB_DS_CLASS_C_DEC&);
+
+      ~debug_map_base();
+
+      inline void
+      insert_new(key_const_reference);
+
+      inline void
+      erase_existing(key_const_reference);
+
+      void
+      clear();
+
+      inline void
+      check_key_exists(key_const_reference, const char*, int) const;
+
+      inline void
+      check_key_does_not_exist(key_const_reference, const char*, int) const;
+
+      inline void
+      check_size(size_type, const char*, int) const;
+
+      void
+      swap(PB_DS_CLASS_C_DEC&);
+
+      template<typename Cmp_Fn>
+      void
+      split(key_const_reference, Cmp_Fn, PB_DS_CLASS_C_DEC&);
+
+      void
+      join(PB_DS_CLASS_C_DEC&, bool with_cleanup = true);
+
+    private:
+      void
+      assert_valid(const char*, int) const;
+
+      const_iterator
+      find(key_const_reference) const;
+
+      iterator
+      find(key_const_reference);
+
+      key_repository 	m_keys;
+      Eq_Fn 		m_eq;
+    };
+
+    PB_DS_CLASS_T_DEC
+    PB_DS_CLASS_C_DEC::
+    debug_map_base()
+    { PB_DS_ASSERT_VALID((*this)) }
+
+    PB_DS_CLASS_T_DEC
+    PB_DS_CLASS_C_DEC::
+    debug_map_base(const PB_DS_CLASS_C_DEC& other)
+    : m_keys(other.m_keys), m_eq(other.m_eq)
+    { PB_DS_ASSERT_VALID((*this)) }
+
+    PB_DS_CLASS_T_DEC
+    PB_DS_CLASS_C_DEC::
+    ~debug_map_base()
+    { PB_DS_ASSERT_VALID((*this)) }
+
+    PB_DS_CLASS_T_DEC
+    inline void
+    PB_DS_CLASS_C_DEC::
+    insert_new(key_const_reference r_key)
+    {
+      PB_DS_ASSERT_VALID((*this))
+
+      if (find(r_key) != m_keys.end())
+	{
+	  std::cerr << "insert_new key already present " << r_key << std::endl;
+	  std::abort();
+	}
+
+      __try
+	{
+	  m_keys.push_back(r_key);
+	}
+      __catch(...)
+	{
+	  std::cerr << "insert_new " << r_key << std::endl;
+	  std::abort();
+	}
+
+      PB_DS_ASSERT_VALID((*this))
+    }
+
+    PB_DS_CLASS_T_DEC
+    inline void
+    PB_DS_CLASS_C_DEC::
+    erase_existing(key_const_reference r_key)
+    {
+      PB_DS_ASSERT_VALID((*this))
+      iterator it = find(r_key);
+      if (it == m_keys.end())
+	{
+	  std::cerr << "erase_existing" << r_key << std::endl;
+	  std::abort();
+	}
+      m_keys.erase(it);
+      PB_DS_ASSERT_VALID((*this))
+    }
+
+    PB_DS_CLASS_T_DEC
+    void
+    PB_DS_CLASS_C_DEC::
+    clear()
+    {
+      PB_DS_ASSERT_VALID((*this))
+      m_keys.clear();
+      PB_DS_ASSERT_VALID((*this))
+    }
+
+    PB_DS_CLASS_T_DEC
+    inline void
+    PB_DS_CLASS_C_DEC::
+    check_key_exists(key_const_reference r_key,
+		     const char* __file, int __line) const
+    {
+      assert_valid(__file, __line);
+      if (find(r_key) == m_keys.end())
+	{
+	  std::cerr << __file << ':' << __line << ": check_key_exists "
+		    << r_key << std::endl;
+	  std::abort();
+	}
+    }
+
+    PB_DS_CLASS_T_DEC
+    inline void
+    PB_DS_CLASS_C_DEC::
+    check_key_does_not_exist(key_const_reference r_key,
+			     const char* __file, int __line) const
+    {
+      assert_valid(__file, __line);
+      if (find(r_key) != m_keys.end())
+	{
+	  using std::cerr;
+	  using std::endl;
+	  cerr << __file << ':' << __line << ": check_key_does_not_exist "
+	       << r_key << endl;
+	  std::abort();
+	}
+    }
+
+    PB_DS_CLASS_T_DEC
+    inline void
+    PB_DS_CLASS_C_DEC::
+    check_size(size_type size, const char* __file, int __line) const
+    {
+      assert_valid(__file, __line);
+      const size_type keys_size = m_keys.size();
+      if (size != keys_size)
+	{
+	  std::cerr << __file << ':' << __line << ": check_size "
+		    << size << " != " << keys_size << std::endl;
+	  std::abort();
+	}
+     }
+
+    PB_DS_CLASS_T_DEC
+    void
+    PB_DS_CLASS_C_DEC::
+    swap(PB_DS_CLASS_C_DEC& other)
+    {
+      PB_DS_ASSERT_VALID((*this))
+      m_keys.swap(other.m_keys);
+      std::swap(m_eq, other.m_eq);
+      PB_DS_ASSERT_VALID((*this))
+    }
+
+    PB_DS_CLASS_T_DEC
+    typename PB_DS_CLASS_C_DEC::const_iterator
+    PB_DS_CLASS_C_DEC::
+    find(key_const_reference r_key) const
+    {
+      PB_DS_ASSERT_VALID((*this))
+      typedef const_iterator iterator_type;
+      for (iterator_type it = m_keys.begin(); it != m_keys.end(); ++it)
+	if (m_eq(*it, r_key))
+	  return it;
+      return m_keys.end();
+    }
+
+    PB_DS_CLASS_T_DEC
+    typename PB_DS_CLASS_C_DEC::iterator
+    PB_DS_CLASS_C_DEC::
+    find(key_const_reference r_key)
+    {
+      PB_DS_ASSERT_VALID((*this))
+      iterator it = m_keys.begin();
+      while (it != m_keys.end())
+	{
+	  if (m_eq(*it, r_key))
+	    return it;
+	  ++it;
+	}
+      return it;
+     }
+
+    PB_DS_CLASS_T_DEC
+    void
+    PB_DS_CLASS_C_DEC::
+    assert_valid(const char* __file, int __line) const
+    {
+      const_iterator prime_it = m_keys.begin();
+      while (prime_it != m_keys.end())
+	{
+	  const_iterator sec_it = prime_it;
+	  ++sec_it;
+	  while (sec_it != m_keys.end())
+	    {
+	      PB_DS_DEBUG_VERIFY(!m_eq(*sec_it, *prime_it));
+	      PB_DS_DEBUG_VERIFY(!m_eq(*prime_it, *sec_it));
+	      ++sec_it;
+	    }
+	  ++prime_it;
+	}
+    }
+
+    PB_DS_CLASS_T_DEC
+    template<typename Cmp_Fn>
+    void
+    PB_DS_CLASS_C_DEC::
+    split(key_const_reference r_key, Cmp_Fn cmp_fn, PB_DS_CLASS_C_DEC& other)
+    {
+      other.clear();
+      iterator it = m_keys.begin();
+      while (it != m_keys.end())
+	if (cmp_fn(r_key, *it))
+	  {
+	    other.insert_new(*it);
+	    it = m_keys.erase(it);
+	  }
+	else
+	  ++it;
+    }
+
+    PB_DS_CLASS_T_DEC
+    void
+    PB_DS_CLASS_C_DEC::
+    join(PB_DS_CLASS_C_DEC& other, bool with_cleanup)
+    {
+      iterator it = other.m_keys.begin();
+      while (it != other.m_keys.end())
+	{
+	  insert_new(*it);
+	  if (with_cleanup)
+	    it = other.m_keys.erase(it);
+	  else
+	    ++it;
+	}
+      _GLIBCXX_DEBUG_ASSERT(!with_cleanup || other.m_keys.empty());
+    }
+
+#undef PB_DS_CLASS_T_DEC
+#undef PB_DS_CLASS_C_DEC
+
+} // namespace detail
+} // namespace __gnu_pbds
+
+
+#endif
+
+#endif