1// 2003-07-06  Benjamin Kosnik  <bkoz@redhat.com>
2
3// Copyright (C) 2003 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 2, 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 COPYING.  If not, write to the Free
18// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
19// USA.
20
21#include <locale>
22#include <sstream>
23#include <ostream>
24#include <testsuite_hooks.h>
25
26class numpunct_checked : public std::numpunct<char>
27{
28  typedef std::numpunct<char> base;
29
30public:
31  explicit
32  numpunct_checked(std::size_t refs = 0): base(refs) { }
33
34  string_type
35  base_truename() const
36  { return base::do_truename(); }
37
38protected:
39  virtual string_type
40  do_truename() const
41  { return base::do_truename() + "st"; }
42};
43
44// Thwart locale caching strategies that incorrectly overwrite base
45// class data.
46void test01()
47{
48  using namespace std;
49
50  bool test __attribute__((unused)) = true;
51  const string 	basestr("true");
52  const string 	derivedstr("truest");
53
54  const locale 	loc(locale::classic(), new numpunct_checked);
55  stringbuf 	sbuf;
56  ostream 	os(&sbuf);
57  os.setf(ios_base::boolalpha);
58
59  // Pre-cache sanity check.
60  const numpunct<char>& np = use_facet<numpunct<char> >(loc);
61  VERIFY( np.truename() == derivedstr );
62
63  // Cache.
64  os.imbue(loc);
65  os << true;
66  VERIFY( sbuf.str() == derivedstr );
67
68  // Post-cache sanity check, make sure that base class is still fine.
69  VERIFY( np.truename() == derivedstr );
70  const numpunct_checked& npd = static_cast<const numpunct_checked&>(np);
71  VERIFY( npd.base_truename() == basestr );
72}
73
74int main()
75{
76  test01();
77  return 0;
78}
79