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// basic_regex& assign(const basic_regex& that);
15
16#include <regex>
17#include <cassert>
18#include "test_macros.h"
19
20int main()
21{
22    std::regex r1("(a([bc]))");
23    std::regex r2;
24    r2.assign(r1);
25    assert(r2.flags() == std::regex::ECMAScript);
26    assert(r2.mark_count() == 2);
27    assert(std::regex_search("ab", r2));
28
29#ifndef TEST_HAS_NO_EXCEPTIONS
30    bool caught = false;
31    try { r2.assign("(def", std::regex::extended); }
32    catch(std::regex_error &) { caught = true; }
33    assert(caught);
34    assert(r2.flags() == std::regex::ECMAScript);
35    assert(r2.mark_count() == 2);
36    assert(std::regex_search("ab", r2));
37#endif
38}
39