third_party/boost/thread/test/test_13561.cpp

// Copyright (C) 2018 Vicente Botet
//
//  Distributed under the Boost Software License, Version 1.0. (See accompanying
//  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

#define BOOST_THREAD_VERSION 4

#include <boost/thread/detail/nullary_function.hpp>
#include <boost/system/detail/error_code.ipp>

int main(int argc, char* argv[])
{
    boost::detail::nullary_function<void ()> f1;
    auto f2 = f1;
}