1// 2001-05-21 Benjamin Kosnik <bkoz@redhat.com> 2 3// Copyright (C) 2001-2015 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// 27.8.1.4 Overridden virtual functions 21 22#include <sstream> 23#include <testsuite_hooks.h> 24 25class OverBuf : public std::wstringbuf 26{ 27public: 28 int_type pub_overflow(int_type c = traits_type::eof()) 29 { return std::wstringbuf::overflow(c); } 30}; 31 32// libstdc++/9988 33// filebuf::overflow writes EOF to file 34void test15() 35{ 36 using namespace std; 37 bool test __attribute__((unused)) = true; 38 39 OverBuf sb; 40 41 sb.sputc(L'a'); 42 sb.pub_overflow(L'b'); 43 sb.pub_overflow(); 44 sb.sputc(L'c'); 45 46 wstringbuf sbin(sb.str(), ios_base::in); 47 wstringbuf::int_type c; 48 c = sbin.sbumpc(); 49 VERIFY( c == L'a' ); 50 c = sbin.sbumpc(); 51 VERIFY( c == L'b' ); 52 c = sbin.sbumpc(); 53 VERIFY( c == L'c' ); 54 c = sbin.sbumpc(); 55 VERIFY( c == wstringbuf::traits_type::eof() ); 56} 57 58int main() 59{ 60 test15(); 61 return 0; 62} 63