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<char, 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 typedef std::codecvt_byname<char, char, std::mbstate_t> F;
21
22 class my_facet
23 : public F
24 {
25 public:
26 static int count;
27
my_facet(const char * nm,std::size_t refs=0)28 explicit my_facet(const char* nm, std::size_t refs = 0)
29 : F(nm, refs) {++count;}
my_facet(const std::string & nm,std::size_t refs=0)30 explicit my_facet(const std::string& nm, std::size_t refs = 0)
31 : F(nm, refs) {++count;}
32
~my_facet()33 ~my_facet() {--count;}
34 };
35
36 int my_facet::count = 0;
37
main()38 int main()
39 {
40 {
41 std::locale l(std::locale::classic(), new my_facet("en_US"));
42 assert(my_facet::count == 1);
43 }
44 assert(my_facet::count == 0);
45 {
46 my_facet f("en_US", 1);
47 assert(my_facet::count == 1);
48 {
49 std::locale l(std::locale::classic(), &f);
50 assert(my_facet::count == 1);
51 }
52 assert(my_facet::count == 1);
53 }
54 assert(my_facet::count == 0);
55 {
56 std::locale l(std::locale::classic(), new my_facet(std::string("en_US")));
57 assert(my_facet::count == 1);
58 }
59 assert(my_facet::count == 0);
60 {
61 my_facet f(std::string("en_US"), 1);
62 assert(my_facet::count == 1);
63 {
64 std::locale l(std::locale::classic(), &f);
65 assert(my_facet::count == 1);
66 }
67 assert(my_facet::count == 1);
68 }
69 assert(my_facet::count == 0);
70 }
71