{

#if __cplusplus >= 201103L

int value = 0;

int tmpValue = 0;

boost::promise<void> promise1;

boost::promise<void> promise2;

auto future1 = promise1.get_future();

auto waitFuture = future1.then([&tmpValue, &promise2](boost::future<void> future){

assert(future.is_ready()); // this works correctly and is ready.

auto fut = boost::async(boost::launch::async, [&promise2, &tmpValue](){

boost::this_thread::sleep_for(boost::chrono::seconds(1));

tmpValue = 1;

promise2.set_value();

std::cout << "Step 2 "<< std::endl; // should print 1 but prints 0

});

std::cout << "Step 1 "<< std::endl; // should print 1 but prints 0

return promise2.get_future();

//return ;

}).then([&value, &tmpValue](boost::future<boost::future<void>> future){

//}).then([&value, &tmpValue](boost::future<void> future){

// error: no matching function for call to ‘boost::future<boost::future<void> >::then(main()::<lambda(boost::future<void>)>)’

// as expected

assert(future.is_ready()); // this doesn't work correctly and is not ready.

value = tmpValue;

});

promise1.set_value();

waitFuture.wait();

std::cout << "value = " << value << std::endl; // should print 1 but prints 0

#endif

return 0;