1*38fd1498Szrj // Copyright (C) 2001-2018 Free Software Foundation, Inc. 2*38fd1498Szrj // 3*38fd1498Szrj // This file is part of the GNU ISO C++ Library. This library is free 4*38fd1498Szrj // software; you can redistribute it and/or modify it under the 5*38fd1498Szrj // terms of the GNU General Public License as published by the 6*38fd1498Szrj // Free Software Foundation; either version 3, or (at your option) 7*38fd1498Szrj // any later version. 8*38fd1498Szrj 9*38fd1498Szrj // This library is distributed in the hope that it will be useful, 10*38fd1498Szrj // but WITHOUT ANY WARRANTY; without even the implied warranty of 11*38fd1498Szrj // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12*38fd1498Szrj // GNU General Public License for more details. 13*38fd1498Szrj 14*38fd1498Szrj // Under Section 7 of GPL version 3, you are granted additional 15*38fd1498Szrj // permissions described in the GCC Runtime Library Exception, version 16*38fd1498Szrj // 3.1, as published by the Free Software Foundation. 17*38fd1498Szrj 18*38fd1498Szrj // You should have received a copy of the GNU General Public License and 19*38fd1498Szrj // a copy of the GCC Runtime Library Exception along with this program; 20*38fd1498Szrj // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 21*38fd1498Szrj // <http://www.gnu.org/licenses/>. 22*38fd1498Szrj 23*38fd1498Szrj #include "bits/c++config.h" 24*38fd1498Szrj #include <fstream> 25*38fd1498Szrj #include <istream> 26*38fd1498Szrj #include <ostream> 27*38fd1498Szrj #include <ext/stdio_filebuf.h> 28*38fd1498Szrj #include <ext/stdio_sync_filebuf.h> 29*38fd1498Szrj 30*38fd1498Szrj // On AIX, and perhaps other systems, library initialization order is 31*38fd1498Szrj // not guaranteed. For example, the static initializers for the main 32*38fd1498Szrj // program might run before the static initializers for this library. 33*38fd1498Szrj // That means that we cannot rely on static initialization in the 34*38fd1498Szrj // library; there is no guarantee that things will get initialized in 35*38fd1498Szrj // time. This file contains definitions of all global variables that 36*38fd1498Szrj // require initialization as arrays of characters. 37*38fd1498Szrj 38*38fd1498Szrj // NB: asm directives can rename these non-exported, namespace 39*38fd1498Szrj // __gnu_cxx symbols into exported, namespace std symbols with the 40*38fd1498Szrj // appropriate symbol version name. 41*38fd1498Szrj // The rename syntax is 42*38fd1498Szrj // asm (".symver currentname,oldname@@GLIBCXX_3.2") 43*38fd1498Szrj // In macro form: 44*38fd1498Szrj // _GLIBCXX_ASM_SYMVER(currentname, oldname, GLIBCXX_3.2) 45*38fd1498Szrj 46*38fd1498Szrj namespace std _GLIBCXX_VISIBILITY(default) 47*38fd1498Szrj { 48*38fd1498Szrj _GLIBCXX_BEGIN_NAMESPACE_VERSION 49*38fd1498Szrj 50*38fd1498Szrj // Standard stream objects. 51*38fd1498Szrj // NB: Iff <iostream> is included, these definitions become wonky. 52*38fd1498Szrj typedef char fake_istream[sizeof(istream)] 53*38fd1498Szrj __attribute__ ((aligned(__alignof__(istream)))); 54*38fd1498Szrj typedef char fake_ostream[sizeof(ostream)] 55*38fd1498Szrj __attribute__ ((aligned(__alignof__(ostream)))); 56*38fd1498Szrj fake_istream cin; 57*38fd1498Szrj fake_ostream cout; 58*38fd1498Szrj fake_ostream cerr; 59*38fd1498Szrj fake_ostream clog; 60*38fd1498Szrj 61*38fd1498Szrj #ifdef _GLIBCXX_USE_WCHAR_T 62*38fd1498Szrj typedef char fake_wistream[sizeof(wistream)] 63*38fd1498Szrj __attribute__ ((aligned(__alignof__(wistream)))); 64*38fd1498Szrj typedef char fake_wostream[sizeof(wostream)] 65*38fd1498Szrj __attribute__ ((aligned(__alignof__(wostream)))); 66*38fd1498Szrj fake_wistream wcin; 67*38fd1498Szrj fake_wostream wcout; 68*38fd1498Szrj fake_wostream wcerr; 69*38fd1498Szrj fake_wostream wclog; 70*38fd1498Szrj #endif 71*38fd1498Szrj 72*38fd1498Szrj _GLIBCXX_END_NAMESPACE_VERSION 73*38fd1498Szrj } // namespace 74*38fd1498Szrj 75*38fd1498Szrj namespace __gnu_internal _GLIBCXX_VISIBILITY(hidden) 76*38fd1498Szrj { 77*38fd1498Szrj using namespace std; 78*38fd1498Szrj using namespace __gnu_cxx; 79*38fd1498Szrj 80*38fd1498Szrj // We use different stream buffer types depending on whether 81*38fd1498Szrj // ios_base::sync_with_stdio(false) has been called. 82*38fd1498Szrj typedef char fake_stdiobuf[sizeof(stdio_sync_filebuf<char>)] 83*38fd1498Szrj __attribute__ ((aligned(__alignof__(stdio_sync_filebuf<char>)))); 84*38fd1498Szrj fake_stdiobuf buf_cout_sync; 85*38fd1498Szrj fake_stdiobuf buf_cin_sync; 86*38fd1498Szrj fake_stdiobuf buf_cerr_sync; 87*38fd1498Szrj 88*38fd1498Szrj typedef char fake_filebuf[sizeof(stdio_filebuf<char>)] 89*38fd1498Szrj __attribute__ ((aligned(__alignof__(stdio_filebuf<char>)))); 90*38fd1498Szrj fake_filebuf buf_cout; 91*38fd1498Szrj fake_filebuf buf_cin; 92*38fd1498Szrj fake_filebuf buf_cerr; 93*38fd1498Szrj 94*38fd1498Szrj #ifdef _GLIBCXX_USE_WCHAR_T 95*38fd1498Szrj typedef char fake_wstdiobuf[sizeof(stdio_sync_filebuf<wchar_t>)] 96*38fd1498Szrj __attribute__ ((aligned(__alignof__(stdio_sync_filebuf<wchar_t>)))); 97*38fd1498Szrj fake_wstdiobuf buf_wcout_sync; 98*38fd1498Szrj fake_wstdiobuf buf_wcin_sync; 99*38fd1498Szrj fake_wstdiobuf buf_wcerr_sync; 100*38fd1498Szrj 101*38fd1498Szrj typedef char fake_wfilebuf[sizeof(stdio_filebuf<wchar_t>)] 102*38fd1498Szrj __attribute__ ((aligned(__alignof__(stdio_filebuf<wchar_t>)))); 103*38fd1498Szrj fake_wfilebuf buf_wcout; 104*38fd1498Szrj fake_wfilebuf buf_wcin; 105*38fd1498Szrj fake_wfilebuf buf_wcerr; 106*38fd1498Szrj #endif 107*38fd1498Szrj } // namespace __gnu_internal 108