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diff --git a/libstdc++-v3/include/ext/pb_ds/detail/cc_hash_table_map_/erase_no_store_hash_fn_imps.hpp b/libstdc++-v3/include/ext/pb_ds/detail/cc_hash_table_map_/erase_no_store_hash_fn_imps.hpp
new file mode 100644
index 00000000..d24fc31f
--- /dev/null
+++ b/libstdc++-v3/include/ext/pb_ds/detail/cc_hash_table_map_/erase_no_store_hash_fn_imps.hpp
@@ -0,0 +1,101 @@
+// -*- 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 erase_no_store_hash_fn_imps.hpp
+ * Contains implementations of cc_ht_map_'s erase related functions,
+ * when the hash value is not stored.
+ */
+
+PB_DS_CLASS_T_DEC
+inline bool
+PB_DS_CLASS_C_DEC::
+erase(const_key_reference r_key)
+{
+  _GLIBCXX_DEBUG_ONLY(assert_valid();)
+  return erase_in_pos_imp(r_key, ranged_hash_fn_base::operator()(r_key));
+}
+
+PB_DS_CLASS_T_DEC
+inline bool
+PB_DS_CLASS_C_DEC::
+erase_in_pos_imp(const_key_reference r_key, size_type pos)
+{
+  _GLIBCXX_DEBUG_ONLY(assert_valid();)
+  entry_pointer p_e = m_entries[pos];
+  resize_base::notify_erase_search_start();
+  if (p_e == NULL)
+    {
+      resize_base::notify_erase_search_end();
+      _GLIBCXX_DEBUG_ONLY(debug_base::check_key_does_not_exist(r_key);)
+      _GLIBCXX_DEBUG_ONLY(assert_valid();)
+      return false;
+    }
+
+  if (hash_eq_fn_base::operator()(PB_DS_V2F(p_e->m_value), r_key))
+    {
+      resize_base::notify_erase_search_end();
+      _GLIBCXX_DEBUG_ONLY(debug_base:: check_key_exists(r_key);)
+      erase_entry_pointer(m_entries[pos]);
+      do_resize_if_needed_no_throw();
+      _GLIBCXX_DEBUG_ONLY(assert_valid();)
+      return true;
+    }
+
+  while (true)
+    {
+      entry_pointer p_next_e = p_e->m_p_next;
+      if (p_next_e == NULL)
+        {
+	  resize_base::notify_erase_search_end();
+	  _GLIBCXX_DEBUG_ONLY(debug_base::check_key_does_not_exist(r_key);)
+          _GLIBCXX_DEBUG_ONLY(assert_valid();)
+          return false;
+        }
+
+      if (hash_eq_fn_base::operator()(PB_DS_V2F(p_next_e->m_value), r_key))
+        {
+	  resize_base::notify_erase_search_end();
+	  _GLIBCXX_DEBUG_ONLY(debug_base::check_key_exists(r_key);)
+          erase_entry_pointer(p_e->m_p_next);
+	  do_resize_if_needed_no_throw();
+	  _GLIBCXX_DEBUG_ONLY(assert_valid();)
+          return true;
+        }
+      resize_base::notify_erase_search_collision();
+      p_e = p_next_e;
+    }
+}
+