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diff --git a/i686-linux-gnu-4.7/usr/include/c++/4.7/profile/impl/profiler_node.h b/i686-linux-gnu-4.7/usr/include/c++/4.7/profile/impl/profiler_node.h
new file mode 100644
index 0000000..efdfe14
--- /dev/null
+++ b/i686-linux-gnu-4.7/usr/include/c++/4.7/profile/impl/profiler_node.h
@@ -0,0 +1,166 @@
+// -*- 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_node.h
+ *  @brief Data structures to represent a single profiling event.
+ */
+
+// Written by Lixia Liu and Silvius Rus.
+
+#ifndef _GLIBCXX_PROFILE_PROFILER_NODE_H
+#define _GLIBCXX_PROFILE_PROFILER_NODE_H 1
+
+#include <cstdio> // FILE, fprintf
+
+#include <vector>
+#if defined _GLIBCXX_HAVE_EXECINFO_H
+#include <execinfo.h>
+#endif
+
+namespace __gnu_profile
+{
+  typedef const void* __object_t;
+  typedef void* __instruction_address_t;
+  typedef std::_GLIBCXX_STD_C::vector<__instruction_address_t> __stack_npt;
+  typedef __stack_npt* __stack_t;
+
+  std::size_t __stack_max_depth();
+
+  inline __stack_t
+  __get_stack()
+  {
+#if defined _GLIBCXX_HAVE_EXECINFO_H
+    std::size_t __max_depth = __stack_max_depth();
+    if (__max_depth == 0)
+      return 0;
+    __stack_npt __buffer(__max_depth);
+    int __depth = backtrace(&__buffer[0], __max_depth);
+    __stack_t __stack = new __stack_npt(__depth);
+    __builtin_memcpy(&(*__stack)[0], &__buffer[0],
+		     __depth * sizeof(__object_t));
+    return __stack;
+#else
+    return 0;
+#endif
+  }
+
+  inline std::size_t
+  __size(__stack_t __stack)
+  {
+    if (!__stack)
+      return 0;
+    else
+      return __stack->size();
+  }
+
+  // XXX
+  inline void
+  __write(FILE* __f, __stack_t __stack)
+  {
+    if (!__stack)
+      return;
+  
+    __stack_npt::const_iterator __it;
+    for (__it = __stack->begin(); __it != __stack->end(); ++__it)
+      std::fprintf(__f, "%p ", *__it);
+  }
+
+  /** @brief Hash function for summary trace using call stack as index.  */
+  class __stack_hash 
+  {
+  public:
+    std::size_t
+    operator()(__stack_t __s) const
+    {
+      if (!__s) 
+	return 0;
+
+      std::size_t __index = 0;
+      __stack_npt::const_iterator __it;
+      for (__it = __s->begin(); __it != __s->end(); ++__it)
+	__index += reinterpret_cast<std::size_t>(*__it);
+      return __index;
+    }
+
+    bool operator() (__stack_t __stack1, __stack_t __stack2) const
+    {
+      if (!__stack1 && !__stack2)
+	return true;
+      if (!__stack1 || !__stack2)
+	return false;
+      if (__stack1->size() != __stack2->size())
+	return false;
+
+      std::size_t __byte_size
+	= __stack1->size() * sizeof(__stack_npt::value_type);
+      return __builtin_memcmp(&(*__stack1)[0], &(*__stack2)[0],
+			      __byte_size) == 0;
+    }
+  };
+
+
+  /** @brief Base class for a line in the object table.  */
+  class __object_info_base
+  {
+  public:
+    __object_info_base() { }
+
+    __object_info_base(__stack_t __stack)
+    : _M_stack(__stack), _M_valid(true) { }
+
+    __object_info_base(const __object_info_base& __o)
+    : _M_stack(__o._M_stack), _M_valid(__o._M_valid) { }
+
+    virtual ~__object_info_base() { }
+
+    bool
+    __is_valid() const 
+    { return _M_valid; }
+    
+    __stack_t
+    __stack() const
+    { return _M_stack; }
+    
+    virtual void __write(FILE* __f) const = 0;
+
+  protected:
+    __stack_t _M_stack;
+    bool _M_valid;
+  };
+
+
+  /** @brief Base class for a line in the stack table.  */
+  template<typename __object_info>
+    class __stack_info_base
+    {
+    public:
+      __stack_info_base() { }
+      __stack_info_base(const __object_info& __info) = 0;
+      virtual ~__stack_info_base() {}
+      void __merge(const __object_info& __info) = 0;
+      virtual float __magnitude() const = 0;
+      virtual const char* __get_id() const = 0;
+    };
+
+} // namespace __gnu_profile
+#endif /* _GLIBCXX_PROFILE_PROFILER_NODE_H */