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diff --git a/libstdc++/stdexcept b/libstdc++/stdexcept
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+// Methods for Exception Support for -*- C++ -*-
+// Copyright (C) 1994, 1995, 1997 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 "stdexcept"
+#endif
+
+#include <exception>
+#include <string>
+
+extern "C++" {
+
+class logic_error : public exception {
+  string _what;
+public:
+  logic_error(const string& what_arg): _what (what_arg) { }
+  virtual const char* what () const { return _what.c_str (); }
+};
+
+class domain_error : public logic_error {
+public:
+  domain_error (const string& what_arg): logic_error (what_arg) { }
+};
+
+class invalid_argument : public logic_error {
+public:
+  invalid_argument (const string& what_arg): logic_error (what_arg) { }
+};
+
+class length_error : public logic_error {
+public:
+  length_error (const string& what_arg): logic_error (what_arg) { }
+};
+
+class out_of_range : public logic_error {
+public:
+  out_of_range (const string& what_arg): logic_error (what_arg) { }
+};
+
+class runtime_error : public exception {
+  string _what;
+public:
+  runtime_error(const string& what_arg): _what (what_arg) { }
+  virtual const char* what () const { return _what.c_str (); }
+protected:
+  runtime_error(): exception () { }
+};
+
+class range_error : public runtime_error {
+public:
+  range_error (const string& what_arg): runtime_error (what_arg) { }
+};
+
+class overflow_error : public runtime_error {
+public:
+  overflow_error (const string& what_arg): runtime_error (what_arg) { }
+};
+
+class underflow_error : public runtime_error {
+public:
+  underflow_error (const string& what_arg): runtime_error (what_arg) { }
+};
+
+} // extern "C++"
+
+#endif