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// <codecvt>
11
12// template <class Elem, unsigned long Maxcode = 0x10ffff,
13//           codecvt_mode Mode = (codecvt_mode)0>
14// class codecvt_utf16
15//     : public codecvt<Elem, char, mbstate_t>
16// {
17//     // unspecified
18// };
19
20// result
21//     unshift(stateT& state,
22//             externT* to, externT* to_end, externT*& to_next) const;
23
24#include <codecvt>
25#include <cassert>
26
27int main()
28{
29    {
30        typedef std::codecvt_utf16<wchar_t> C;
31        C c;
32        char n[4] = {0};
33        std::mbstate_t m;
34        char* np = nullptr;
35        std::codecvt_base::result r = c.unshift(m, n, n+4, np);
36        assert(r == std::codecvt_base::noconv);
37    }
38    {
39        typedef std::codecvt_utf16<char16_t> C;
40        C c;
41        char n[4] = {0};
42        std::mbstate_t m;
43        char* np = nullptr;
44        std::codecvt_base::result r = c.unshift(m, n, n+4, np);
45        assert(r == std::codecvt_base::noconv);
46    }
47    {
48        typedef std::codecvt_utf16<char32_t> C;
49        C c;
50        char n[4] = {0};
51        std::mbstate_t m;
52        char* np = nullptr;
53        std::codecvt_base::result r = c.unshift(m, n, n+4, np);
54        assert(r == std::codecvt_base::noconv);
55    }
56}
57