1// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006 2// Free Software Foundation, Inc. 3// 4// This file is part of the GNU ISO C++ Library. This library is free 5// software; you can redistribute it and/or modify it under the 6// terms of the GNU General Public License as published by the 7// Free Software Foundation; either version 2, or (at your option) 8// any later version. 9 10// This library is distributed in the hope that it will be useful, 11// but WITHOUT ANY WARRANTY; without even the implied warranty of 12// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13// GNU General Public License for more details. 14 15// You should have received a copy of the GNU General Public License along 16// with this library; see the file COPYING. If not, write to the Free 17// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 18// USA. 19 20// As a special exception, you may use this file as part of a free software 21// library without restriction. Specifically, if other files instantiate 22// templates or use macros or inline functions from this file, or you compile 23// this file and link it with other files to produce an executable, this 24// file does not by itself cause the resulting executable to be covered by 25// the GNU General Public License. This exception does not however 26// invalidate any other reasons why the executable file might be covered by 27// the GNU General Public License. 28 29#include "bits/c++config.h" 30#include <fstream> 31#include <istream> 32#include <ostream> 33#include <ext/stdio_filebuf.h> 34#include <ext/stdio_sync_filebuf.h> 35 36// On AIX, and perhaps other systems, library initialization order is 37// not guaranteed. For example, the static initializers for the main 38// program might run before the static initializers for this library. 39// That means that we cannot rely on static initialization in the 40// library; there is no guarantee that things will get initialized in 41// time. This file contains definitions of all global variables that 42// require initialization as arrays of characters. 43 44// NB: asm directives can rename these non-exported, namespace 45// __gnu_cxx symbols into exported, namespace std symbols with the 46// appropriate symbol version name. 47// The rename syntax is 48// asm (".symver currentname,oldname@@GLIBCXX_3.2") 49// In macro form: 50// _GLIBCXX_ASM_SYMVER(currentname, oldname, GLIBCXX_3.2) 51 52_GLIBCXX_BEGIN_NAMESPACE(std) 53 54 // Standard stream objects. 55 // NB: Iff <iostream> is included, these definitions become wonky. 56 typedef char fake_istream[sizeof(istream)] 57 __attribute__ ((aligned(__alignof__(istream)))); 58 typedef char fake_ostream[sizeof(ostream)] 59 __attribute__ ((aligned(__alignof__(ostream)))); 60 fake_istream cin; 61 fake_ostream cout; 62 fake_ostream cerr; 63 fake_ostream clog; 64 65#ifdef _GLIBCXX_USE_WCHAR_T 66 typedef char fake_wistream[sizeof(wistream)] 67 __attribute__ ((aligned(__alignof__(wistream)))); 68 typedef char fake_wostream[sizeof(wostream)] 69 __attribute__ ((aligned(__alignof__(wostream)))); 70 fake_wistream wcin; 71 fake_wostream wcout; 72 fake_wostream wcerr; 73 fake_wostream wclog; 74#endif 75 76_GLIBCXX_END_NAMESPACE 77 78namespace __gnu_internal _GLIBCXX_VISIBILITY(hidden) 79{ 80 using namespace std; 81 using namespace __gnu_cxx; 82 83 // We use different stream buffer types depending on whether 84 // ios_base::sync_with_stdio(false) has been called. 85 typedef char fake_stdiobuf[sizeof(stdio_sync_filebuf<char>)] 86 __attribute__ ((aligned(__alignof__(stdio_sync_filebuf<char>)))); 87 fake_stdiobuf buf_cout_sync; 88 fake_stdiobuf buf_cin_sync; 89 fake_stdiobuf buf_cerr_sync; 90 91 typedef char fake_filebuf[sizeof(stdio_filebuf<char>)] 92 __attribute__ ((aligned(__alignof__(stdio_filebuf<char>)))); 93 fake_filebuf buf_cout; 94 fake_filebuf buf_cin; 95 fake_filebuf buf_cerr; 96 97#ifdef _GLIBCXX_USE_WCHAR_T 98 typedef char fake_wstdiobuf[sizeof(stdio_sync_filebuf<wchar_t>)] 99 __attribute__ ((aligned(__alignof__(stdio_sync_filebuf<wchar_t>)))); 100 fake_wstdiobuf buf_wcout_sync; 101 fake_wstdiobuf buf_wcin_sync; 102 fake_wstdiobuf buf_wcerr_sync; 103 104 typedef char fake_wfilebuf[sizeof(stdio_filebuf<wchar_t>)] 105 __attribute__ ((aligned(__alignof__(stdio_filebuf<wchar_t>)))); 106 fake_wfilebuf buf_wcout; 107 fake_wfilebuf buf_wcin; 108 fake_wfilebuf buf_wcerr; 109#endif 110} // namespace __gnu_internal 111