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// <regex>
11
12// template <class charT, class traits = regex_traits<charT>> class basic_regex;
13
14// template <class charT, class traits>
15//   void swap(basic_regex<charT, traits>& lhs, basic_regex<charT, traits>& rhs);
16
17#include <regex>
18#include <cassert>
19
20int main()
21{
22    std::regex r1("(a([bc]))");
23    std::regex r2;
24    swap(r2, r1);
25    assert(r1.flags() == std::regex::ECMAScript);
26    assert(r1.mark_count() == 0);
27    assert(r2.flags() == std::regex::ECMAScript);
28    assert(r2.mark_count() == 2);
29}
30