1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 // <locale>
10
11 // template <> class codecvt<char16_t, char8_t, mbstate_t>
12
13 // result out(stateT& state,
14 // const internT* from, const internT* from_end, const internT*& from_next,
15 // externT* to, externT* to_end, externT*& to_next) const;
16
17 // UNSUPPORTED: c++03, c++11, c++14, c++17
18
19 // C++20 codecvt specializations for char8_t are not yet implemented:
20 // UNSUPPORTED: libc++
21
22 #include <cassert>
23 #include <locale>
24
main(int,char **)25 int main(int, char**) {
26 using F = std::codecvt<char16_t, char8_t, std::mbstate_t>;
27 const F& f = std::use_facet<F>(std::locale::classic());
28 F::intern_type from[9] = {'s', 'o', 'm', 'e', ' ', 't', 'e', 'x', 't'};
29 F::extern_type to[9] = {0};
30 std::mbstate_t mbs = {};
31 const F::intern_type* from_next = nullptr;
32 F::extern_type* to_next = nullptr;
33 F::result r = f.out(mbs, from, from + 9, from_next, to, to + 9, to_next);
34 assert(r == F::ok);
35 assert(from_next - from == 9);
36 assert(to_next - to == 9);
37 for (unsigned i = 0; i < 9; ++i)
38 assert(to[i] == from[i]);
39 return 0;
40 }
41