libstdc++-v3/libsupc++/exception_defines.h

   1 // -fno-exceptions Support -*- C++ -*-
   2
   3 // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2006, 2007, 2008, 2009
   4 // Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // Under Section 7 of GPL version 3, you are granted additional
  18 // permissions described in the GCC Runtime Library Exception, version
  19 // 3.1, as published by the Free Software Foundation.
  20
  21 // You should have received a copy of the GNU General Public License and
  22 // a copy of the GCC Runtime Library Exception along with this program;
  23 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  24 // <http://www.gnu.org/licenses/>.
  25
  26 //
  27 // ISO C++ 14882: 19.1  Exception classes
  28 //
  29
  30 /** @file exception_defines.h
  31  *  This is a Standard C++ Library header.
  32  */
  33
  34 #ifndef _EXCEPTION_DEFINES_H
  35 #define _EXCEPTION_DEFINES_H 1
  36
  37 #ifndef __EXCEPTIONS
  38 // Iff -fno-exceptions, transform error handling code to work without it.
  39 # define __try      if (true)
  40 # define __catch(X) if (false)
  41 # define __throw_exception_again
  42 #else
  43 // Else proceed normally.
  44 # define __try      try
  45 # define __catch(X) catch(X)
  46 # define __throw_exception_again throw
  47 #endif
  48
  49 #endif