1// 2001-05-21 Benjamin Kosnik  <bkoz@redhat.com>
2
3// Copyright (C) 2001, 2002, 2003, 2004, 2009 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