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
22 typedef std::codecvt_byname<wchar_t, char, std::mbstate_t> F;
23
24 class my_facet
25 : public F
26 {
27 public:
28 static int count;
29
my_facet(const char * nm,std::size_t refs=0)30 explicit my_facet(const char* nm, std::size_t refs = 0)
31 : F(nm, refs) {++count;}
my_facet(const std::string & nm,std::size_t refs=0)32 explicit my_facet(const std::string& nm, std::size_t refs = 0)
33 : F(nm, refs) {++count;}
34
~my_facet()35 ~my_facet() {--count;}
36 };
37
38 int my_facet::count = 0;
39
main()40 int 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