// 1999-10-11 bkoz // Copyright (C) 1999, 2000, 2001, 2002, 2003, 2009 // Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 3, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License along // with this library; see the file COPYING3. If not see // . // 27.5.2 template class basic_streambuf #include #include #include #include // test03 // http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00151.html template > class basic_nullbuf : public std::basic_streambuf { protected: typedef typename std::basic_streambuf::int_type int_type; virtual int_type overflow(int_type c) { return traits::not_eof(c); } }; typedef basic_nullbuf nullbuf; template char print(const T& x) { nullbuf ob; std::ostream out(&ob); out << x << std::endl; return (!out ? '0' : '1'); } void test03() { bool test __attribute__((unused)) = true; const std::string control01("11111"); std::string test01; test01 += print(true); test01 += print(3.14159); test01 += print(10); test01 += print('x'); test01 += print("pipo"); VERIFY( test01 == control01 ); } int main() { test03(); return 0; }