1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <locale>
11
12// template <> class codecvt_byname<wchar_t, char, mbstate_t>
13
14// explicit codecvt_byname(const char* nm, size_t refs = 0);
15// explicit codecvt_byname(const string& nm, size_t refs = 0);
16
17#include <locale>
18#include <cassert>
19
20#include "platform_support.h" // locale name macros
21
22typedef std::codecvt_byname<wchar_t, char, std::mbstate_t> F;
23
24class my_facet
25    : public F
26{
27public:
28    static int count;
29
30    explicit my_facet(const char* nm, std::size_t refs = 0)
31        : F(nm, refs) {++count;}
32    explicit my_facet(const std::string& nm, std::size_t refs = 0)
33        : F(nm, refs) {++count;}
34
35    ~my_facet() {--count;}
36};
37
38int my_facet::count = 0;
39
40int main()
41{
42    {
43        std::locale l(std::locale::classic(), new my_facet(LOCALE_en_US_UTF_8));
44        assert(my_facet::count == 1);
45    }
46    assert(my_facet::count == 0);
47    {
48        my_facet f(LOCALE_en_US_UTF_8, 1);
49        assert(my_facet::count == 1);
50        {
51            std::locale l(std::locale::classic(), &f);
52            assert(my_facet::count == 1);
53        }
54        assert(my_facet::count == 1);
55    }
56    assert(my_facet::count == 0);
57    {
58        std::locale l(std::locale::classic(), new my_facet(std::string(LOCALE_en_US_UTF_8)));
59        assert(my_facet::count == 1);
60    }
61    assert(my_facet::count == 0);
62    {
63        my_facet f(std::string(LOCALE_en_US_UTF_8), 1);
64        assert(my_facet::count == 1);
65        {
66            std::locale l(std::locale::classic(), &f);
67            assert(my_facet::count == 1);
68        }
69        assert(my_facet::count == 1);
70    }
71    assert(my_facet::count == 0);
72}
73