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 // <regex>
10 
11 // template <class charT, class traits = regex_traits<charT>> class basic_regex;
12 
13 // void swap(basic_regex& e);
14 
15 #include <regex>
16 #include <cassert>
17 #include "test_macros.h"
18 
main(int,char **)19 int main(int, char**)
20 {
21     std::regex r1("(a([bc]))");
22     std::regex r2;
23     r2.swap(r1);
24     assert(r1.flags() == std::regex::ECMAScript);
25     assert(r1.mark_count() == 0);
26     assert(r2.flags() == std::regex::ECMAScript);
27     assert(r2.mark_count() == 2);
28 
29   return 0;
30 }
31