id summary reporter owner description type status milestone component version severity resolution keywords cc 4674 output operator<< of thread::id ka55i0peia@… Anthony Williams "Hi, {{{#!cpp std::cout << boost::this_thread::get_id(); }}} produces: {{{ thread.hpp(473) : error C2662: 'std::basic_ostream<_Elem,_Traits> &boost::thread::id::print>(std::basic_ostream<_Elem,_Traits> &)' : cannot convert 'this' pointer from 'const boost::thread::id' to 'boost::thread::id &' }}} For me it was okay to comment the const out: {{{#!cpp operator<<(std::basic_ostream& os, /*const*/ thread::id& x) { return x.print(os); } }}} Greetings, Jan." Bugs closed To Be Determined thread Boost 1.44.0 Problem duplicate