1// 1999-07-01 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// 21.3.7.9 inserters and extractors 22 23// NB: This file is predicated on sstreams, istreams, and ostreams 24// working, not to mention other major details like char_traits, and 25// all of the string class. 26 27#include <string> 28#include <sstream> 29#include <testsuite_hooks.h> 30 31// testing basic_stringbuf::xsputn via stress testing with large strings 32// based on a bug report libstdc++ 9 33void test04(std::size_t size) 34{ 35 bool test __attribute__((unused)) = true; 36 std::string str(size, 's'); 37 std::size_t expected_size = 2 * (size + 1); 38 std::ostringstream oss(str); 39 40 // sanity checks 41 VERIFY( str.size() == size ); 42 VERIFY( oss.good() ); 43 44 // stress test 45 oss << str << std::endl; 46 if (!oss.good()) 47 test = false; 48 49 oss << str << std::endl; 50 if (!oss.good()) 51 test = false; 52 53 VERIFY( str.size() == size ); 54 VERIFY( oss.good() ); 55 std::string str_tmp = oss.str(); 56 VERIFY( str_tmp.size() == expected_size ); 57} 58 59int main() 60{ 61 test04(1); // expected_size == 4 62 test04(1000); // expected_size == 2002 63 test04(10000); // expected_size == 20002 64 return 0; 65} 66