id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
12329	typedef argument_type missing on optional<T&>	Daniel Laügt <daniel.laugt@…>	Fernando Cacciola	"Hi,

Any reason why typedef argument_type has been removed in the new specialization of optional<T&>?

To have the same typedefs between optional<T> and optional<T&>, it would be nice to add the following in the specialization of optional<T&>:[[BR]]
typedef T& argument_type;

This allows also to keep compatibility on public interface of the old optional implementation, except of course if there is a good reason to have removing this typedef...

Regards,[[BR]]
Daniel."	Bugs	closed	To Be Determined	optional	Boost 1.61.0	Regression	wontfix