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#include "test_macros.h"
20
21int main()
22{
23    using std::regex_constants::awk;
24
25    assert(std::regex_match("\4", std::regex("\\4", awk)));
26    assert(std::regex_match("\41", std::regex("\\41", awk)));
27    assert(std::regex_match("\141", std::regex("\\141", awk)));
28    assert(std::regex_match("\141" "1", std::regex("\\1411", awk)));
29}
30