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diff --git a/libstdc++-v3/include/ext/pb_ds/detail/cc_hash_table_map_/cmp_fn_imps.hpp b/libstdc++-v3/include/ext/pb_ds/detail/cc_hash_table_map_/cmp_fn_imps.hpp
new file mode 100644
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+++ b/libstdc++-v3/include/ext/pb_ds/detail/cc_hash_table_map_/cmp_fn_imps.hpp
@@ -0,0 +1,83 @@
+// -*- 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 cmp_fn_imps.hpp
+ * Contains implementations of cc_ht_map_'s entire container comparison related
+ *    functions.
+ */
+
+PB_DS_CLASS_T_DEC
+template<typename Other_HT_Map_Type>
+bool
+PB_DS_CLASS_C_DEC::
+operator==(const Other_HT_Map_Type& other) const
+{ return cmp_with_other(other); }
+
+PB_DS_CLASS_T_DEC
+template<typename Other_Map_Type>
+bool
+PB_DS_CLASS_C_DEC::
+cmp_with_other(const Other_Map_Type& other) const
+{
+  if (size() != other.size())
+    return false;
+
+  for (typename Other_Map_Type::const_iterator it = other.begin();
+       it != other.end(); ++it)
+    {
+      const_key_reference r_key = const_key_reference(PB_DS_V2F(*it));
+
+      const_mapped_pointer p_mapped_value =
+	const_cast<PB_DS_CLASS_C_DEC& >(*this).
+	find_key_pointer(r_key, traits_base::m_store_extra_indicator);
+
+      if (p_mapped_value == NULL)
+	return false;
+
+#ifdef PB_DS_DATA_TRUE_INDICATOR
+      if (p_mapped_value->second != it->second)
+	return false;
+#endif
+    }
+  return true;
+}
+
+PB_DS_CLASS_T_DEC
+template<typename Other_HT_Map_Type>
+bool
+PB_DS_CLASS_C_DEC::
+operator!=(const Other_HT_Map_Type& other) const
+{ return !operator==(other); }