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 ST, class SA>
15 // basic_regex(const basic_string<charT, ST, SA>& s);
16
17 #include <regex>
18 #include <cassert>
19
main()20 int main()
21 {
22 using std::regex_constants::awk;
23
24 assert(std::regex_match("\4", std::regex("\\4", awk)));
25 assert(std::regex_match("\41", std::regex("\\41", awk)));
26 assert(std::regex_match("\141", std::regex("\\141", awk)));
27 assert(std::regex_match("\1411", std::regex("\\1411", awk)));
28 }
29