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diff --git a/libg++/libstdc++/std/stdexcept.h b/libg++/libstdc++/std/stdexcept.h
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+++ b/libg++/libstdc++/std/stdexcept.h
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+// Methods for Exception Support for -*- C++ -*-
+// Copyright (C) 1994, 1995 Free Software Foundation
+
+// This file is part of the GNU ANSI 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 2, 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.
+
+// You should have received a copy of the GNU General Public License
+// along with this library; see the file COPYING.  If not, write to the Free
+// Software Foundation, 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+// As a special exception, if you link this library with files
+// compiled with a GNU compiler to produce an executable, this does not cause
+// the resulting executable to be covered by the GNU General Public License.
+// This exception does not however invalidate any other reasons why
+// the executable file might be covered by the GNU General Public License.
+
+// Written by Mike Stump based upon the specification in the 20 September 1994
+// C++ working paper, ANSI document X3J16/94-0158.
+
+#ifndef __STDEXCEPT__
+#define __STDEXCEPT__
+
+#ifdef __GNUG__
+#pragma interface "std/stdexcept.h"
+#endif
+
+#include <typeinfo>
+
+extern "C++" {
+#if 0
+#include <string>
+typedef string __string;
+#else
+typedef const char * __string;
+#endif
+
+class exception {
+public:
+  typedef void (*raise_handler)(exception&);
+  static raise_handler set_raise_handler(raise_handler handler_arg);
+  exception (const __string& what_arg): desc (what_arg) { }
+  virtual ~exception() { }
+  void raise();
+  virtual __string what() const { return desc; }
+protected:
+  exception() { }
+  virtual void do_raise() { }
+private:
+  __string desc;
+};
+
+class logic_error : public exception {
+public:
+  logic_error(const __string& what_arg): exception (what_arg) { }
+  virtual ~logic_error() { }
+};
+
+class domain_error : public logic_error {
+public:
+  domain_error (const __string& what_arg): logic_error (what_arg) { }
+  virtual ~domain_error () { }
+};
+
+class invalid_argument : public logic_error {
+public:
+  invalid_argument (const __string& what_arg): logic_error (what_arg) { }
+  virtual ~invalid_argument () { }
+};
+
+class length_error : public logic_error {
+public:
+  length_error (const __string& what_arg): logic_error (what_arg) { }
+  virtual ~length_error () { }
+};
+
+class out_of_range : public logic_error {
+public:
+  out_of_range (const __string& what_arg): logic_error (what_arg) { }
+  virtual ~out_of_range () { }
+};
+
+class runtime_error : public exception {
+public:
+  runtime_error(const __string& what_arg): exception (what_arg) { }
+  virtual ~runtime_error() { }
+protected:
+  runtime_error(): exception () { }
+};
+
+class range_error : public runtime_error {
+public:
+  range_error (const __string& what_arg): runtime_error (what_arg) { }
+  virtual ~range_error () { }
+};
+
+class overflow_error : public runtime_error {
+public:
+  overflow_error (const __string& what_arg): runtime_error (what_arg) { }
+  virtual ~overflow_error () { }
+};
+
+// These are moved here from typeinfo so that we can compile with -frtti
+class bad_cast : public logic_error {
+public:
+  bad_cast(const __string& what_arg): logic_error (what_arg) { }
+  virtual ~bad_cast() { }
+};
+
+extern bad_cast __bad_cast_object;
+
+class bad_typeid : public logic_error {
+ public:
+  bad_typeid (): logic_error ("bad_typeid") { }
+  virtual ~bad_typeid () { }
+};
+} // extern "C++"
+
+#endif