1// 1999-10-11 bkoz 2 3// Copyright (C) 1999, 2000, 2001, 2002, 2003, 2009 4// Free Software Foundation, Inc. 5// 6// This file is part of the GNU ISO C++ Library. This library is free 7// software; you can redistribute it and/or modify it under the 8// terms of the GNU General Public License as published by the 9// Free Software Foundation; either version 3, or (at your option) 10// any later version. 11 12// This library is distributed in the hope that it will be useful, 13// but WITHOUT ANY WARRANTY; without even the implied warranty of 14// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15// GNU General Public License for more details. 16 17// You should have received a copy of the GNU General Public License along 18// with this library; see the file COPYING3. If not see 19// <http://www.gnu.org/licenses/>. 20 21 22// 27.5.2 template class basic_streambuf 23 24#include <fstream> 25#include <testsuite_hooks.h> 26 27class setpbuf : public std::filebuf 28{ 29 char buffer[4]; 30 std::string result; 31 32public: 33 34 std::string& 35 get_result() 36 { return result; } 37 38 setpbuf() 39 { 40 this->open("tmp_1057", std::ios_base::out | std::ios_base::trunc); 41 char foo [32]; 42 setp(foo, foo + 32); 43 setp(buffer, buffer + 4); 44 } 45 46 ~setpbuf() 47 { 48 sync(); 49 close(); 50 } 51 52 virtual int_type 53 overflow(int_type n) 54 { 55 if (sync() != 0) 56 return traits_type::eof(); 57 58 result += traits_type::to_char_type(n); 59 60 return n; 61 } 62 63 virtual int 64 sync() 65 { 66 result.append(pbase(), pptr()); 67 setp(buffer, buffer + 4); 68 return 0; 69 } 70}; 71 72// libstdc++/1057 73void test04() 74{ 75 bool test __attribute__((unused)) = true; 76 std::string text = "abcdefghijklmn"; 77 78 // 01 79 setpbuf sp1; 80 // Here xsputn writes over sp1.result 81 sp1.sputn(text.c_str(), text.length()); 82 83 // This crashes when result is accessed 84 sp1.pubsync(); 85 VERIFY( sp1.get_result() == text ); 86 87 // 02 88 setpbuf sp2; 89 for (std::string::size_type i = 0; i < text.length(); ++i) 90 { 91 // sputc also writes over result 92 sp2.sputc(text[i]); 93 } 94 95 // Crash here 96 sp2.pubsync(); 97 VERIFY( sp2.get_result() == text ); 98} 99 100int main() 101{ 102 test04(); 103 return 0; 104} 105