[boost] [system] - std::terminate() called after throw system_error

Hi, I tried boost::system-0.2.1 out. If I execute: int main( int argc, char *argv[]) { ... sys::error_code ec( EINTR, sys::errno_ec); sys::system_error se( ec); printf("%s\n", se.what() ); throw se; // terminate() called ... } std::terminate() and std::set_unexpected are called. What is going wrong? regards, Oliver