1// Copyright (C) 2006-2015 Free Software Foundation, Inc.
2//
3// This file is part of the GNU ISO C++ Library.  This library is free
4// software; you can redistribute it and/or modify it under the
5// terms of the GNU General Public License as published by the
6// Free Software Foundation; either version 3, or (at your option)
7// any later version.
8
9// This library is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12// GNU General Public License for more details.
13
14// You should have received a copy of the GNU General Public License along
15// with this library; see the file COPYING3.  If not see
16// <http://www.gnu.org/licenses/>.
17
18// 27.8.1.4 Overridden virtual functions
19
20#include <sstream>
21#include <testsuite_hooks.h>
22
23struct pubbuf
24: std::wstringbuf
25{
26  using std::wstringbuf::eback;
27  using std::wstringbuf::egptr;
28  using std::wstringbuf::pbase;
29  using std::wstringbuf::pptr;
30  using std::wstringbuf::epptr;
31  using std::wstringbuf::overflow;
32};
33
34// libstdc++/26250
35void test01()
36{
37  bool test __attribute__((unused)) = true;
38
39  pubbuf buf;
40
41  VERIFY( buf.overflow(L'x') == L'x' );
42  VERIFY( buf.pptr() - buf.pbase() == 1 );
43
44  // not required but good for efficiency
45  // NB: we are implementing DR 169 and DR 432
46  const int write_positions = buf.epptr() - buf.pbase();
47  VERIFY( write_positions > 1 );
48
49  // 27.7.1.3, p8:
50  VERIFY( buf.egptr() - buf.eback() == 1 );
51}
52
53int main()
54{
55  test01();
56  return 0;
57}
58