1// Copyright (C) 2003-2015 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// { dg-require-fileio "" }
19
20// 27.8.1.3 filebuf member functions
21
22#include <locale>
23#include <fstream>
24#include <testsuite_hooks.h>
25
26class Cvt : public std::codecvt<char, char, std::mbstate_t>
27{
28public:
29  mutable bool unshift_called;
30
31  Cvt()
32  : unshift_called(false)
33  { }
34
35protected:
36  bool
37  do_always_noconv() const throw()
38  { return false; }
39
40  int
41  do_encoding() const throw()
42  { return -1; }
43
44  std::codecvt_base::result
45  do_unshift(std::mbstate_t&, char* to, char*, char*& to_next) const
46  {
47    unshift_called = true;
48    to_next = to;
49    return std::codecvt_base::ok;
50  }
51};
52
53// libstdc++/12790
54// basic_filebuf::close() should call codecvt::unshift()
55void test01()
56{
57  using namespace std;
58
59  bool test __attribute__((unused)) = true;
60  const char* name = "tmp_close_12790";
61
62  Cvt* cvt = new Cvt;
63  locale loc(locale::classic(), cvt);
64
65  filebuf fb;
66  fb.pubimbue(loc);
67
68  fb.open(name, ios_base::out);
69  fb.sputc('a');
70  fb.pubsync(); // Does not call unshift()
71
72  VERIFY( !cvt->unshift_called );
73  fb.close();
74  VERIFY( cvt->unshift_called );
75}
76
77int main()
78{
79  test01();
80  return 0;
81}
82