id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
12003	Implement is_constrructible<T, U> -- no variadics	akrzemi1	John Maddock	"In the current implementation of trait boost::is_constructible, unless the compiler offers variadic templates (and some more), is implemented as boost::is_convertible, and that's it.

I understand the limitations, but would it be possible to provide a more accurate version for the case with exactly two parameters: boost::is_constructible<T, U>. This would check the construction with a single argument, so it does not require variadic templates, and it would cover a significant number of use cases. For instance it would unblock my ticket: 

https://svn.boost.org/trac/boost/ticket/12002"	Bugs	closed	To Be Determined	type_traits	Boost 1.61.0	Problem	fixed		akrzemi1@… raad@… marci_r@…