id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
4227	operator safe bool	Domagoj Šarić	Fernando Cacciola	See https://svn.boost.org/trac/boost/ticket/4226	Bugs	closed	Boost 1.56.0	optional	Boost 1.44.0	Optimization	fixed