1 // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2009, 2011 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 3, 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 // Under Section 7 of GPL version 3, you are granted additional 16 // permissions described in the GCC Runtime Library Exception, version 17 // 3.1, as published by the Free Software Foundation. 18 19 // You should have received a copy of the GNU General Public License and 20 // a copy of the GCC Runtime Library Exception along with this program; 21 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 22 // <http://www.gnu.org/licenses/>. 23 24 #include "bits/c++config.h" 25 #include <fstream> 26 #include <istream> 27 #include <ostream> 28 #include <ext/stdio_filebuf.h> 29 #include <ext/stdio_sync_filebuf.h> 30 31 // On AIX, and perhaps other systems, library initialization order is 32 // not guaranteed. For example, the static initializers for the main 33 // program might run before the static initializers for this library. 34 // That means that we cannot rely on static initialization in the 35 // library; there is no guarantee that things will get initialized in 36 // time. This file contains definitions of all global variables that 37 // require initialization as arrays of characters. 38 39 // NB: asm directives can rename these non-exported, namespace 40 // __gnu_cxx symbols into exported, namespace std symbols with the 41 // appropriate symbol version name. 42 // The rename syntax is 43 // asm (".symver currentname,oldname@@GLIBCXX_3.2") 44 // In macro form: 45 // _GLIBCXX_ASM_SYMVER(currentname, oldname, GLIBCXX_3.2) 46 47 namespace std _GLIBCXX_VISIBILITY(default) 48 { 49 _GLIBCXX_BEGIN_NAMESPACE_VERSION 50 51 // Standard stream objects. 52 // NB: Iff <iostream> is included, these definitions become wonky. 53 typedef char fake_istream[sizeof(istream)] 54 __attribute__ ((aligned(__alignof__(istream)))); 55 typedef char fake_ostream[sizeof(ostream)] 56 __attribute__ ((aligned(__alignof__(ostream)))); 57 fake_istream cin; 58 fake_ostream cout; 59 fake_ostream cerr; 60 fake_ostream clog; 61 62 #ifdef _GLIBCXX_USE_WCHAR_T 63 typedef char fake_wistream[sizeof(wistream)] 64 __attribute__ ((aligned(__alignof__(wistream)))); 65 typedef char fake_wostream[sizeof(wostream)] 66 __attribute__ ((aligned(__alignof__(wostream)))); 67 fake_wistream wcin; 68 fake_wostream wcout; 69 fake_wostream wcerr; 70 fake_wostream wclog; 71 #endif 72 73 _GLIBCXX_END_NAMESPACE_VERSION 74 } // namespace 75 76 namespace __gnu_internal _GLIBCXX_VISIBILITY(hidden) 77 { 78 using namespace std; 79 using namespace __gnu_cxx; 80 81 // We use different stream buffer types depending on whether 82 // ios_base::sync_with_stdio(false) has been called. 83 typedef char fake_stdiobuf[sizeof(stdio_sync_filebuf<char>)] 84 __attribute__ ((aligned(__alignof__(stdio_sync_filebuf<char>)))); 85 fake_stdiobuf buf_cout_sync; 86 fake_stdiobuf buf_cin_sync; 87 fake_stdiobuf buf_cerr_sync; 88 89 typedef char fake_filebuf[sizeof(stdio_filebuf<char>)] 90 __attribute__ ((aligned(__alignof__(stdio_filebuf<char>)))); 91 fake_filebuf buf_cout; 92 fake_filebuf buf_cin; 93 fake_filebuf buf_cerr; 94 95 #ifdef _GLIBCXX_USE_WCHAR_T 96 typedef char fake_wstdiobuf[sizeof(stdio_sync_filebuf<wchar_t>)] 97 __attribute__ ((aligned(__alignof__(stdio_sync_filebuf<wchar_t>)))); 98 fake_wstdiobuf buf_wcout_sync; 99 fake_wstdiobuf buf_wcin_sync; 100 fake_wstdiobuf buf_wcerr_sync; 101 102 typedef char fake_wfilebuf[sizeof(stdio_filebuf<wchar_t>)] 103 __attribute__ ((aligned(__alignof__(stdio_filebuf<wchar_t>)))); 104 fake_wfilebuf buf_wcout; 105 fake_wfilebuf buf_wcin; 106 fake_wfilebuf buf_wcerr; 107 #endif 108 } // namespace __gnu_internal 109