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1 | // 2003-07-06 Benjamin Kosnik <bkoz@redhat.com> |
2 | ||
7adcbafe | 3 | // Copyright (C) 2003-2022 Free Software Foundation, Inc. |
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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 | |
748086b7 | 8 | // Free Software Foundation; either version 3, or (at your option) |
cde63840 BK |
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 | |
748086b7 JJ |
17 | // with this library; see the file COPYING3. If not see |
18 | // <http://www.gnu.org/licenses/>. | |
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19 | |
20 | #include <locale> | |
21 | #include <sstream> | |
22 | #include <ostream> | |
23 | #include <testsuite_hooks.h> | |
24 | ||
25 | class numpunct_checked : public std::numpunct<wchar_t> | |
26 | { | |
27 | typedef std::numpunct<wchar_t> base; | |
28 | ||
29 | public: | |
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 | ||
37 | protected: | |
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. | |
45 | void test01() | |
46 | { | |
47 | using namespace std; | |
48 | ||
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49 | const wstring basestr(L"true"); |
50 | const wstring derivedstr(L"truest"); | |
51 | ||
52 | const locale loc(locale::classic(), new numpunct_checked); | |
53 | wstringbuf sbuf; | |
54 | wostream os(&sbuf); | |
55 | os.setf(ios_base::boolalpha); | |
56 | ||
57 | // Pre-cache sanity check. | |
58 | const numpunct<wchar_t>& np = use_facet<numpunct<wchar_t> >(loc); | |
59 | VERIFY( np.truename() == derivedstr ); | |
60 | ||
61 | // Cache. | |
62 | os.imbue(loc); | |
63 | os << true; | |
64 | VERIFY( sbuf.str() == derivedstr ); | |
65 | ||
66 | // Post-cache sanity check, make sure that base class is still fine. | |
67 | VERIFY( np.truename() == derivedstr ); | |
68 | const numpunct_checked& npd = static_cast<const numpunct_checked&>(np); | |
69 | VERIFY( npd.base_truename() == basestr ); | |
70 | } | |
71 | ||
72 | int main() | |
73 | { | |
74 | test01(); | |
75 | return 0; | |
76 | } |