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

Hello, The following code, compiled with Boost trunk: #include <string> #include int main() {     boost::promisestd::string p;     boost::shared_futurestd::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