1// 2003-05-01 Petur Runolfsson <peturr02@ru.is> 2 3// Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc. 4// 5// This file is part of the GNU ISO C++ Library. This library is free 6// software; you can redistribute it and/or modify it under the 7// terms of the GNU General Public License as published by the 8// Free Software Foundation; either version 2, or (at your option) 9// any later version. 10 11// This library is distributed in the hope that it will be useful, 12// but WITHOUT ANY WARRANTY; without even the implied warranty of 13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14// GNU General Public License for more details. 15 16// You should have received a copy of the GNU General Public License along 17// with this library; see the file COPYING. If not, write to the Free 18// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 19// USA. 20 21// As a special exception, you may use this file as part of a free software 22// library without restriction. Specifically, if other files instantiate 23// templates or use macros or inline functions from this file, or you compile 24// this file and link it with other files to produce an executable, this 25// file does not by itself cause the resulting executable to be covered by 26// the GNU General Public License. This exception does not however 27// invalidate any other reasons why the executable file might be covered by 28// the GNU General Public License. 29 30#include <fstream> 31#include <iostream> 32#include <testsuite_hooks.h> 33 34class gnu_filebuf: public std::wfilebuf 35{ 36 int i; 37public: 38 gnu_filebuf(int j = 1): i(j) { } 39 ~gnu_filebuf() { --i; } 40 int get_i() { return i;} 41}; 42 43const int initial = 4; 44gnu_filebuf buf(initial); 45 46// libstdc++/3045, in a vague way. 47void test01() 48{ 49 bool test __attribute__((unused)) = true; 50 int k1; 51 52 // 1 normal 53 k1 = buf.get_i(); 54 VERIFY( k1 == initial ); 55 { 56 std::wcout.rdbuf(&buf); 57 } 58 k1 = buf.get_i(); 59 VERIFY( k1 == initial ); 60 61 // 2 syncd off 62 k1 = buf.get_i(); 63 VERIFY( k1 == initial ); 64 { 65 std::wcout.rdbuf(&buf); 66 std::ios_base::sync_with_stdio(false); // make sure doesn't clobber buf 67 } 68 k1 = buf.get_i(); 69 VERIFY( k1 == initial ); 70 71 // 3 callling init 72 k1 = buf.get_i(); 73 VERIFY( k1 == initial ); 74 { 75 std::wcout.rdbuf(&buf); 76 std::ios_base::Init make_sure_initialized; 77 } 78 k1 = buf.get_i(); 79 VERIFY( k1 == initial ); 80} 81 82int main() 83{ 84 test01(); 85 return 0; 86} 87