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 // UNSUPPORTED: c++03, c++11, c++14, c++17
10 // UNSUPPORTED: no-localization
11 // UNSUPPORTED: libcpp-has-no-experimental-syncstream
12
13 // <syncstream>
14
15 // template<class charT, class traits, class Allocator>
16 // void swap(basic_syncbuf<charT, traits, Allocator>&,
17 // basic_syncbuf<charT, traits, Allocator>&);
18
19 #include <syncstream>
20 #include <cassert>
21
22 #include "test_macros.h"
23
24 template <class CharT>
test()25 void test() {
26 std::basic_syncbuf<CharT> base1;
27 std::basic_syncbuf<CharT> base2;
28 std::basic_syncbuf<CharT> buff1(&base1);
29 std::basic_syncbuf<CharT> buff2(&base2);
30 std::swap(buff1, buff2);
31
32 assert(buff1.get_wrapped() == &base2);
33 assert(buff2.get_wrapped() == &base1);
34 }
35
main(int,char **)36 int main(int, char**) {
37 test<char>();
38 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
39 test<wchar_t>();
40 #endif
41
42 return 0;
43 }
44