id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
8891	upgrade_to_unique_lock: missing mutex() function	Cable Thompson <cthompson102@…>	viboes	"The mutex() function found in shared_lock, upgrade_lock, and unique_lock is missing in upgrade_to_unique_lock.

Could it please be added?"	Feature Requests	closed	Boost 1.55.0	thread	Boost 1.54.0	Problem	fixed