id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
12351	boost::make_shared doesn't use constructor forwarding through move emulation	me@…	Peter Dimov	"Currently, boost::make_shared doesn't perform constructor forwarding unless C++11 r-value references are supported. This prevents using of MOVABLE_BUT_NOT_COPYABLE types as arguments to constructors.

The Boost.Move documentation describes [http://www.boost.org/doc/libs/1_59_0/doc/html/move/construct_forwarding.html how to perform (limited) constructor forwarding]. It's example is perfectly applicable to boost::make_shared.

The change in [https://github.com/boostorg/smart_ptr/pull/24 boostorg/smart_ptr#24] implements constructor forwarding for make_shared as documented in Boost.Move's documentation.

With this change the difference between the code supporting r-value references but not supporting variadic templates became the type signature and the call to boost::detail::sp_forward and boost::forward. The first difference was eliminated by using the macro BOOST_FWD_REF, the second by using boost::forward in both places, making the two pieces of code textually equal and thus I also removed the duplicate."	Patches	new	To Be Determined	smart_ptr	Boost 1.59.0	Problem