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TBE/MinGW/include/c++/3.2.3/exception

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+// Exception Handling support header for -*- C++ -*-
+
+// Copyright (C) 1995, 1996, 1997, 1998, 2000, 2001, 2002
+// Free Software Foundation
+//
+// This file is part of GNU CC.
+//
+// GNU CC 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.
+// 
+// GNU CC 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 GNU CC; 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, you may use this file as part of a free software
+// library without restriction.  Specifically, if other files instantiate
+// templates or use macros or inline functions from this file, or you compile
+// this file and link it with other files to produce an executable, this
+// file does not by itself 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.
+
+/** @file exception
+ *  This header defines several types and functions relating to the
+ *  handling of exceptions in a C++ program.
+ */
+
+#ifndef __EXCEPTION__
+#define __EXCEPTION__
+
+extern "C++" {
+
+namespace std 
+{
+  /** 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).
+   *  @brief Base class for all library exceptions.
+   */
+  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();
+  };
+
+  /// 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.  */
+  void terminate() __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();
+} // namespace std
+
+namespace __gnu_cxx
+{
+  /** A replacement for the standard terminate_handler which prints more
+      information about the terminating exception (if any) on stderr.  Call
+      @code
+        std::set_terminate (__gnu_cxx::__verbose_terminate_handler)
+      @endcode
+      to use.  For more info, see
+      http://gcc.gnu.org/onlinedocs/libstdc++/19_diagnostics/howto.html#4
+  */
+  void __verbose_terminate_handler ();
+} // namespace __gnu_cxx
+  
+} // extern "C++"
+
+#endif