id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
11549	ostream& operator<< overload no longer picked up by boost log	dd0t@…	Andrey Semashev	"Boost log does no longer seem to reliably pick up custom stream operators in boost 1.59.0 (tested with vc14 and vc12). In the example given below the custom operator works fine for cout but isn't found when trying to use it normally for logging. The operator is however found if something else is piped in first. Compiling the same example with 1.58.0 (only tested with vc12) works as expected.

{{{
#include <iostream>
#include <ostream>
#include <boost/log/trivial.hpp>

struct Mine {};

std::ostream& operator << (std::ostream& t, const Mine& m) {
	t << ""Works"";
	return t;
};

int main() {
	Mine m;
	std::cout << m << std::endl; // Works
	BOOST_LOG_TRIVIAL(warning) << m; // error C2678: binary '<<': no operator found which takes a left-hand operand of type 'boost::log::v2s_mt_nt5::basic_record_ostream<char>' (or there is no acceptable conversion)
	BOOST_LOG_TRIVIAL(warning) << """" << m; // Works
	return 0;
};
}}}
"	Bugs	closed	To Be Determined	log	Boost 1.59.0	Regression	fixed		kingsbfs@…