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+// Exception Handling support header for -*- C++ -*-
+
+// Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
+// 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
+// Free Software Foundation
+//
+// This file is part of GCC.
+//
+// GCC 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.
+//
+// GCC 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/>.
+
+/** @file exception
+ *  This is a Standard C++ Library header.
+ */
+
+#ifndef __EXCEPTION__
+#define __EXCEPTION__
+
+#pragma GCC system_header
+
+#pragma GCC visibility push(default)
+
+#include <bits/c++config.h>
+
+extern "C++" {
+
+namespace std
+{
+  /**
+   * @defgroup exceptions Exceptions
+   * @ingroup diagnostics
+   *
+   * Classes and functions for reporting errors via exception classes.
+   * @{
+   */
+
+  /**
+   *  @brief Base class for all library exceptions.
+   *
+   *  This is the base class for all exceptions thrown by the standard
+   *  library, and by certain language expressions.  You are free to derive
+   *  your own %exception classes, or use a different hierarchy, or to
+   *  throw non-class data (e.g., fundamental types).
+   */
+  class exception
+  {
+  public:
+    exception() throw() { }
+    virtual ~exception() throw();
+
+    /** Returns a C-style character string describing the general cause
+     *  of the current error.  */
+    virtual const char* what() const throw();
+  };
+
+  /** If an %exception is thrown which is not listed in a function's
+   *  %exception specification, one of these may be thrown.  */
+  class bad_exception : public exception
+  {
+  public:
+    bad_exception() throw() { }
+
+    // This declaration is not useless:
+    // http://gcc.gnu.org/onlinedocs/gcc-3.0.2/gcc_6.html#SEC118
+    virtual ~bad_exception() throw();
+
+    // See comment in eh_exception.cc.
+    virtual const char* what() const throw();
+  };
+
+  /// If you write a replacement %terminate handler, it must be of this type.
+  typedef void (*terminate_handler) ();
+
+  /// If you write a replacement %unexpected handler, it must be of this type.
+  typedef void (*unexpected_handler) ();
+
+  /// Takes a new handler function as an argument, returns the old function.
+  terminate_handler set_terminate(terminate_handler) throw();
+
+  /** The runtime will call this function if %exception handling must be
+   *  abandoned for any reason.  It can also be called by the user.  */
+  void terminate() throw() __attribute__ ((__noreturn__));
+
+  /// Takes a new handler function as an argument, returns the old function.
+  unexpected_handler set_unexpected(unexpected_handler) throw();
+
+  /** The runtime will call this function if an %exception is thrown which
+   *  violates the function's %exception specification.  */
+  void unexpected() __attribute__ ((__noreturn__));
+
+  /** [18.6.4]/1:  'Returns true after completing evaluation of a
+   *  throw-expression until either completing initialization of the
+   *  exception-declaration in the matching handler or entering @c unexpected()
+   *  due to the throw; or after entering @c terminate() for any reason
+   *  other than an explicit call to @c terminate().  [Note: This includes
+   *  stack unwinding [15.2].  end note]'
+   *
+   *  2: 'When @c uncaught_exception() is true, throwing an
+   *  %exception can result in a call of @c terminate()
+   *  (15.5.1).'
+   */
+  bool uncaught_exception() throw() __attribute__ ((__pure__));
+
+  // @} group exceptions
+} // namespace std
+
+namespace __gnu_cxx
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+  /**
+   *  @brief A replacement for the standard terminate_handler which
+   *  prints more information about the terminating exception (if any)
+   *  on stderr.
+   *
+   *  @ingroup exceptions
+   *
+   *  Call
+   *   @code
+   *     std::set_terminate(__gnu_cxx::__verbose_terminate_handler)
+   *   @endcode
+   *  to use.  For more info, see
+   *  http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt02ch06s02.html
+   *
+   *  In 3.4 and later, this is on by default.
+   */
+  void __verbose_terminate_handler();
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace
+
+} // extern "C++"
+
+#pragma GCC visibility pop
+
+#if (defined(__GXX_EXPERIMENTAL_CXX0X__) \
+     && defined(_GLIBCXX_ATOMIC_BUILTINS_4))
+#include <bits/exception_ptr.h>
+#include <bits/nested_exception.h>
+#endif
+
+#endif