1 // 2001-05-21 Benjamin Kosnik <bkoz@redhat.com> 2 3 // Copyright (C) 2001-2021 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 25 class OverBuf : public std::stringbuf 26 { 27 public: pub_overflow(int_type c=traits_type::eof ())28 int_type pub_overflow(int_type c = traits_type::eof()) 29 { return std::stringbuf::overflow(c); } 30 }; 31 32 // libstdc++/9988 33 // filebuf::overflow writes EOF to file test15()34void test15() 35 { 36 using namespace std; 37 38 OverBuf sb; 39 40 sb.sputc('a'); 41 sb.pub_overflow('b'); 42 sb.pub_overflow(); 43 sb.sputc('c'); 44 45 stringbuf sbin(sb.str(), ios_base::in); 46 stringbuf::int_type c; 47 c = sbin.sbumpc(); 48 VERIFY( c == 'a' ); 49 c = sbin.sbumpc(); 50 VERIFY( c == 'b' ); 51 c = sbin.sbumpc(); 52 VERIFY( c == 'c' ); 53 c = sbin.sbumpc(); 54 VERIFY( c == stringbuf::traits_type::eof() ); 55 } 56 main()57int main() 58 { 59 test15(); 60 return 0; 61 } 62