libstdc++
exception_defines.h
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00001 // -fno-exceptions Support -*- C++ -*-
00002 
00003 // Copyright (C) 2001-2013 Free Software Foundation, Inc.
00004 //
00005 // This file is part of the GNU ISO C++ Library.  This library is free
00006 // software; you can redistribute it and/or modify it under the
00007 // terms of the GNU General Public License as published by the
00008 // Free Software Foundation; either version 3, or (at your option)
00009 // any later version.
00010 
00011 // This library is distributed in the hope that it will be useful,
00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014 // GNU General Public License for more details.
00015 
00016 // Under Section 7 of GPL version 3, you are granted additional
00017 // permissions described in the GCC Runtime Library Exception, version
00018 // 3.1, as published by the Free Software Foundation.
00019 
00020 // You should have received a copy of the GNU General Public License and
00021 // a copy of the GCC Runtime Library Exception along with this program;
00022 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
00023 // <http://www.gnu.org/licenses/>.
00024 
00025 /** @file bits/exception_defines.h
00026  *  This is an internal header file, included by other library headers.
00027  *  Do not attempt to use it directly. @headername{exception}
00028  */
00029 
00030 #ifndef _EXCEPTION_DEFINES_H
00031 #define _EXCEPTION_DEFINES_H 1
00032 
00033 #ifndef __EXCEPTIONS
00034 // Iff -fno-exceptions, transform error handling code to work without it.
00035 # define __try      if (true)
00036 # define __catch(X) if (false)
00037 # define __throw_exception_again
00038 #else
00039 // Else proceed normally.
00040 # define __try      try
00041 # define __catch(X) catch(X)
00042 # define __throw_exception_again throw
00043 #endif
00044 
00045 #endif