3045.cc revision 1.1.1.1
1// 2001-06-05 Benjamin Kosnik <bkoz@redhat.com> 2 3// Copyright (C) 2001, 2002, 2003, 2009 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 3, 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 COPYING3. If not see 18// <http://www.gnu.org/licenses/>. 19 20 21#include <fstream> 22#include <iostream> 23#include <testsuite_hooks.h> 24 25class gnu_filebuf: public std::filebuf 26{ 27 int i; 28public: 29 gnu_filebuf(int j = 1): i(j) { } 30 ~gnu_filebuf() { --i; } 31 int get_i() { return i;} 32}; 33 34const int initial = 4; 35gnu_filebuf buf(initial); 36 37// libstdc++/3045, in a vague way. 38void test01() 39{ 40 bool test __attribute__((unused)) = true; 41 int k1; 42 43 // 1 normal 44 k1 = buf.get_i(); 45 VERIFY( k1 == initial ); 46 { 47 std::cout.rdbuf(&buf); 48 } 49 k1 = buf.get_i(); 50 VERIFY( k1 == initial ); 51 52 // 2 syncd off 53 k1 = buf.get_i(); 54 VERIFY( k1 == initial ); 55 { 56 std::cout.rdbuf(&buf); 57 std::ios_base::sync_with_stdio(false); // make sure doesn't clobber buf 58 } 59 k1 = buf.get_i(); 60 VERIFY( k1 == initial ); 61 62 // 3 callling init 63 k1 = buf.get_i(); 64 VERIFY( k1 == initial ); 65 { 66 std::cout.rdbuf(&buf); 67 std::ios_base::Init make_sure_initialized; 68 } 69 k1 = buf.get_i(); 70 VERIFY( k1 == initial ); 71} 72 73int main() 74{ 75 test01(); 76 return 0; 77} 78