1// 2003-07-06  Benjamin Kosnik  <bkoz@redhat.com>
2
3// Copyright (C) 2003-2015 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#include <locale>
21#include <sstream>
22#include <ostream>
23#include <testsuite_hooks.h>
24
25class numpunct_checked : public std::numpunct<wchar_t>
26{
27  typedef std::numpunct<wchar_t> base;
28
29public:
30  explicit
31  numpunct_checked(std::size_t refs = 0): base(refs) { }
32
33  string_type
34  base_truename() const
35  { return base::do_truename(); }
36
37protected:
38  virtual string_type
39  do_truename() const
40  { return base::do_truename() + L"st"; }
41};
42
43// Thwart locale caching strategies that incorrectly overwrite base
44// class data.
45void test01()
46{
47  using namespace std;
48
49  bool test __attribute__((unused)) = true;
50  const wstring 	basestr(L"true");
51  const wstring 	derivedstr(L"truest");
52
53  const locale 	loc(locale::classic(), new numpunct_checked);
54  wstringbuf 	sbuf;
55  wostream 	os(&sbuf);
56  os.setf(ios_base::boolalpha);
57
58  // Pre-cache sanity check.
59  const numpunct<wchar_t>& np = use_facet<numpunct<wchar_t> >(loc);
60  VERIFY( np.truename() == derivedstr );
61
62  // Cache.
63  os.imbue(loc);
64  os << true;
65  VERIFY( sbuf.str() == derivedstr );
66
67  // Post-cache sanity check, make sure that base class is still fine.
68  VERIFY( np.truename() == derivedstr );
69  const numpunct_checked& npd = static_cast<const numpunct_checked&>(np);
70  VERIFY( npd.base_truename() == basestr );
71}
72
73int main()
74{
75  test01();
76  return 0;
77}
78