Doesn't work with gcc >= 8.4

[zhekha]

#include "wildcards.hpp"
#include <iostream>
#include <string>

int main()
{
    using wildcards::make_matcher;
    constexpr auto pattern = make_matcher("???");

    for (auto& entry : {"qwe", "asd", "zxc"}) {

        std::string str = entry;.
        if (pattern.matches(str))
            std::cout << str << " ok" << std::endl;
        else
            std::cout << str << " failed" << std::endl;
    }

    return 0;
}

output:
qwe failed
asd failed
zxc failed