[Boost-users] [thread] debug output when using futures/promises

Hello, The following code, compiled with Boost trunk: #include <string> #include <boost/thread/future.hpp> int main() {     boost::promise<std::string> p;     boost::shared_future<std::string> f(p.get_future()); } Gives me the following output when I run it: 1334 0 1336 0 1347 0 1349 1 I have built Boost in release mode. What is causing this output? Can it be removed? Thanks, Nate