#define BOOST_THREAD_PROVIDES_FUTURE
#define BOOST_THREAD_PROVIDES_FUTURE_CONTINUATION
// #define BOOST_THREAD_VERSION 4

#include <boost/thread/thread.hpp>
#include <boost/thread/future.hpp>

int main()
{
    for (long i = 0; i < 10000000; i++) {
        boost::promise<void> p;
    
        auto f = p.get_future().then(boost::launch::async,
            [i](boost::future<void> previous) { });
        
        p.set_value();
        f.get();
    }
}