id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
9813	[boost] [fusion] constexpr support	gonzalobg88@…	Joel de Guzman	"Boost.MPL and Boost.Fusion are very useful inside C++14 relaxed constexpr functions. However, this doesn't work out of the box since constexpr functions can only call other constexpr functions. 

I have started to mark fusion and mpl functions and types as constexpr within my local Boost copy. This task is pretty big so I am only doing it for the parts of the library that I need to use within constexpr functions.

It would be nice to know what is the best way to proceed (e.g. incremental patches until full support is achieved vs a single patch that enables constexpr support). "	Feature Requests	closed	To Be Determined	fusion	Boost 1.55.0	Problem	fixed	constexpr