//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// <regex>

// template <class BidirectionalIterator, class Allocator, class charT, class traits>
//     bool
//     regex_match(BidirectionalIterator first, BidirectionalIterator last,
//                  match_results<BidirectionalIterator, Allocator>& m,
//                  const basic_regex<charT, traits>& e,
//                  regex_constants::match_flag_type flags = regex_constants::match_default);

// http://llvm.org/bugs/show_bug.cgi?id=16135

#include <string>
#include <regex>
#include <cassert>

void
test1()
{
    std::string re{"\\{a\\}"};
    std::string target{"{a}"};
    std::regex regex{re};
    std::smatch smatch;
    assert((std::regex_match(target, smatch, regex)));
}

void
test2()
{
    std::string re{"\\{a\\}"};
    std::string target{"{a}"};
    std::regex regex{re, std::regex::extended};
    std::smatch smatch;
    assert((std::regex_match(target, smatch, regex)));
}

void
test3()
{
    std::string re{"\\{a\\}"};
    std::string target{"{a}"};
    std::regex regex{re, std::regex::awk};
    std::smatch smatch;
    assert((std::regex_match(target, smatch, regex)));
}

void
test4()
{
    std::string re{"\\{a\\}"};
    std::string target{"{a}"};
    std::regex regex{re, std::regex::egrep};
    std::smatch smatch;
    assert((std::regex_match(target, smatch, regex)));
}

int
main()
{
    test1();
    test2();
    test3();
    test4();
}
