// Exception Handling support header for -*- C++ -*-
-// Copyright (C) 1995, 1996, 1997, 1998, 2000, 2001 Free Software Foundation
-
-// This file is part of GNU CC.
+// Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
+// 2004, 2005, 2006, 2007, 2008
+// Free Software Foundation
+//
+// This file is part of GCC.
//
-// GNU CC is free software; you can redistribute it and/or modify
+// 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 2, or (at your option)
// any later version.
//
-// GNU CC is distributed in the hope that it will be useful,
+// 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.
//
// 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.
+// along with GCC; see the file COPYING. If not, write to
+// the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+// Boston, MA 02110-1301, USA.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
+/** @file exception
+ * This is a Standard C++ Library header.
+ */
+
#ifndef __EXCEPTION__
#define __EXCEPTION__
-#pragma interface "exception"
+#pragma GCC visibility push(default)
+
+#include <bits/c++config.h>
extern "C++" {
namespace std
{
+ /**
+ * @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() { }
+ 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() { }
- virtual ~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() __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
+_GLIBCXX_BEGIN_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
+
+ In 3.4 and later, this is on by default.
+ */
+ void __verbose_terminate_handler ();
+
+_GLIBCXX_END_NAMESPACE
+
} // extern "C++"
+#pragma GCC visibility pop
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+#include <exception_ptr.h>
+#endif
+
#endif
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