Qtcreator gdb boost rtti

stima_ua

I've strange runtime warning
@
RTTI symbol not found for class 'boost::signals2::signal<void (bool, std::string const&), boost::signals2::optional_last_value<void>, int, std::less<int>, boost::function<void (bool, std::string const&)>, boost::function<void (boost::signals2::connection const&, bool, std::string const&)>, boost::signals2::mutex>'
@

that was called when debugging in this part of my code:

@
typedef boost::signals2::signal<void(bool, const std::string&)> signal_t;

void send(const std::string& buff, const signal_t& signal)
{
auto async_send = boost::bind(&priv::async_send_handle, shared_from_this(), placeholders::error, boost::ref(signal));
auto timeout = boost::bind(&priv::check_deadline, shared_from_this(), placeholders::error, boost::ref(signal));

boost::asio::async_write(sd, buffer(buff), async_send);

_deadline.expires_from_now(boost::posix_time::milliseconds(connect_timeout));
_deadline.async_wait(timeout);

}
@

How should I handle this? Thanks for any advice.

Info: boost v1.54, qtcreator v2.8.1 (non qt project), g++ v4.8.1, gdb v7.5.91.20130417-cvs-ubuntu

p.s. I run gdb + executable (gdb a.out) without qt and I have not this warnigns.