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 
19 int main()
20 {
21     std::regex r1("(a([bc]))");
22     std::regex r2;
23     r2.assign(r1);
24     assert(r2.flags() == std::regex::ECMAScript);
25     assert(r2.mark_count() == 2);
26     assert(std::regex_search("ab", r2));
27 
28     bool caught = false;
29     try { r2.assign("(def", std::regex::extended); }
30     catch(std::regex_error &) { caught = true; }
31     assert(caught);
32     assert(r2.flags() == std::regex::ECMAScript);
33     assert(r2.mark_count() == 2);
34     assert(std::regex_search("ab", r2));
35 }
36