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diff --git a/i686-linux-gnu-4.7/usr/include/c++/4.7/profile/impl/profiler_hash_func.h b/i686-linux-gnu-4.7/usr/include/c++/4.7/profile/impl/profiler_hash_func.h
new file mode 100644
index 0000000..7ff11cd
--- /dev/null
+++ b/i686-linux-gnu-4.7/usr/include/c++/4.7/profile/impl/profiler_hash_func.h
@@ -0,0 +1,174 @@
+// -*- C++ -*-
+//
+// Copyright (C) 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 along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+/** @file profile/impl/profiler_hash_func.h
+ *  @brief Data structures to represent profiling traces.
+ */
+
+// Written by Lixia Liu and Silvius Rus.
+
+#ifndef _GLIBCXX_PROFILE_PROFILER_HASH_FUNC_H
+#define _GLIBCXX_PROFILE_PROFILER_HASH_FUNC_H 1
+
+#include "profile/impl/profiler.h"
+#include "profile/impl/profiler_node.h"
+#include "profile/impl/profiler_trace.h"
+
+namespace __gnu_profile
+{
+  /** @brief A hash performance instrumentation line in the object table.  */
+  class __hashfunc_info
+  : public __object_info_base
+  {
+  public:
+    __hashfunc_info()
+    : _M_longest_chain(0), _M_accesses(0), _M_hops(0) { }
+
+    __hashfunc_info(const __hashfunc_info& __o)
+    : __object_info_base(__o), _M_longest_chain(__o._M_longest_chain),
+      _M_accesses(__o._M_accesses), _M_hops(__o._M_hops) { }
+
+    __hashfunc_info(__stack_t __stack)
+    : __object_info_base(__stack), _M_longest_chain(0),
+      _M_accesses(0), _M_hops(0) { }
+
+    virtual ~__hashfunc_info() { }
+
+    void
+    __merge(const __hashfunc_info& __o)
+    {
+      _M_longest_chain  = std::max(_M_longest_chain, __o._M_longest_chain);
+      _M_accesses      += __o._M_accesses;
+      _M_hops          += __o._M_hops;
+    }
+
+    void
+    __destruct(std::size_t __chain, std::size_t __accesses,
+	       std::size_t __hops)
+    { 
+      _M_longest_chain  = std::max(_M_longest_chain, __chain);
+      _M_accesses      += __accesses;
+      _M_hops          += __hops;
+    }
+
+    void
+    __write(FILE* __f) const
+    { std::fprintf(__f, "%Zu %Zu %Zu\n", _M_hops,
+		   _M_accesses, _M_longest_chain); }
+
+    float
+    __magnitude() const
+    { return static_cast<float>(_M_hops); }
+
+    std::string
+    __advice() const
+    { return "change hash function"; }
+
+  private:
+    std::size_t _M_longest_chain;
+    std::size_t _M_accesses;
+    std::size_t _M_hops;
+  };
+
+
+  /** @brief A hash performance instrumentation line in the stack table.  */
+  class __hashfunc_stack_info 
+  : public __hashfunc_info
+  {
+  public:
+    __hashfunc_stack_info(const __hashfunc_info& __o)
+    : __hashfunc_info(__o) { }
+  };
+
+
+  /** @brief Hash performance instrumentation producer.  */
+  class __trace_hash_func
+  : public __trace_base<__hashfunc_info, __hashfunc_stack_info> 
+  {
+  public:
+    __trace_hash_func()
+    : __trace_base<__hashfunc_info, __hashfunc_stack_info>()
+    { __id = "hash-distr"; }
+
+    ~__trace_hash_func() {}
+    
+    // Insert a new node at construct with object, callstack and initial size.
+    void
+    __insert(__object_t __obj, __stack_t __stack)
+    { __add_object(__obj, __hashfunc_info(__stack)); }
+
+    // Call at destruction/clean to set container final size.
+    void
+    __destruct(const void* __obj, std::size_t __chain,
+	       std::size_t __accesses, std::size_t __hops)
+    {
+      if (!__is_on())
+	return;
+
+      // First find the item from the live objects and update the informations.
+      __hashfunc_info* __objs = __get_object_info(__obj);
+      if (!__objs)
+	return;
+
+      __objs->__destruct(__chain, __accesses, __hops);
+      __retire_object(__obj);
+    }
+  };
+
+
+  inline void
+  __trace_hash_func_init()
+  { _GLIBCXX_PROFILE_DATA(_S_hash_func) = new __trace_hash_func(); }
+
+  inline void
+  __trace_hash_func_report(FILE* __f, __warning_vector_t& __warnings)
+  {
+    if (_GLIBCXX_PROFILE_DATA(_S_hash_func))
+      {
+	_GLIBCXX_PROFILE_DATA(_S_hash_func)->__collect_warnings(__warnings);
+	_GLIBCXX_PROFILE_DATA(_S_hash_func)->__write(__f);
+      }
+  }
+
+  inline void
+  __trace_hash_func_construct(const void* __obj)
+  {
+    if (!__profcxx_init())
+      return;
+
+    _GLIBCXX_PROFILE_DATA(_S_hash_func)->__insert(__obj, __get_stack());
+  }
+
+  inline void
+  __trace_hash_func_destruct(const void* __obj, std::size_t __chain,
+			     std::size_t __accesses, std::size_t __hops)
+  {
+    if (!__profcxx_init())
+      return;
+
+    _GLIBCXX_PROFILE_DATA(_S_hash_func)->__destruct(__obj, __chain,
+						    __accesses, __hops);
+  }
+
+} // namespace __gnu_profile
+#endif /* _GLIBCXX_PROFILE_PROFILER_HASH_FUNC_H */