id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
10964	future<future<T>>::unwrap().then() Deadlocks	code@…	viboes	"The shared_state returned by unwrap() doesn't appear to propagate continuation information properly. The following code will deadlock, but the continuations should be immediately invoked.

{{{
struct TestCallback
{
    typedef boost::future<void> result_type;

    result_type operator()(boost::future<void> future) const
    {
        future.get();
        return boost::make_ready_future();
    }

    result_type operator()(boost::future<boost::future<void>> future) const
    {
       future.get();
       return boost::make_ready_future();
    }
};

int main()
{
    boost::make_ready_future().then(
        TestCallback()).unwrap().then(TestCallback()).get();
    return 0;
}
}}}"	Bugs	closed	To Be Determined	thread	Boost 1.57.0	Problem	fixed		contact@…