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[/] [scarts/] [trunk/] [toolchain/] [scarts-gcc/] [gcc-4.1.1/] [libstdc++-v3/] [testsuite/] [27_io/] [basic_stringbuf/] [sync/] [char/] [1057.cc] - Rev 19
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// 1999-10-11 bkoz // Copyright (C) 1999, 2000, 2001, 2002, 2003 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 2, 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 COPYING. If not, write to the Free // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, // USA. // As a special exception, you may use this file as part of a free software // library without restriction. Specifically, if other files instantiate // templates or use macros or inline functions from this file, or you compile // this file and link it with other files to produce an executable, this // file does not by itself cause the resulting executable to be covered by // the GNU General Public License. This exception does not however // invalidate any other reasons why the executable file might be covered by // the GNU General Public License. // 27.5.2 template class basic_streambuf #include <sstream> #include <testsuite_hooks.h> class setpbuf : public std::stringbuf { char buffer[4]; std::string result; public: std::string& get_result() { return result; } setpbuf() { char foo [32]; setp(foo, foo + 32); setp(buffer, buffer + 4); } ~setpbuf() { sync(); } virtual int_type overflow(int_type n) { if (sync() != 0) return traits_type::eof(); result += traits_type::to_char_type(n); return n; } virtual int sync() { result.append(pbase(), pptr()); setp(buffer, buffer + 4); return 0; } }; // libstdc++/1057 void test04() { bool test __attribute__((unused)) = true; std::string text = "abcdefghijklmn"; // 01 setpbuf sp1; // Here xsputn writes over sp1.result sp1.sputn(text.c_str(), text.length()); // This crashes when result is accessed sp1.pubsync(); VERIFY( sp1.get_result() == text ); // 02 setpbuf sp2; for (std::string::size_type i = 0; i < text.length(); ++i) { // sputc also writes over result sp2.sputc(text[i]); } // Crash here sp2.pubsync(); VERIFY( sp2.get_result() == text ); } int main() { test04(); return 0; }