id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
12896	"[Utility] string_view's comparison operators are not marked ""constexpr"""	Zheng Luo	Marshall Clow	"During the implementation of my GSoC static_map competency project, I found that in Boost 1.63, string_view's comparison operator was not marked as constexpr(http://www.boost.org/doc/libs/1_63_0/boost/utility/string_view.hpp).
According to cppreference, string_view in C++17's standard library includes constexpr comparison operators, and actually the implementation of Boost's comparison operators calls constexpr compare() method. However, constexpr compare() in Boost never works in C++14, since it uses std::char_traits in standard library, of which char_traits::compare is not marked constexpr until C++17. It seems possible to backport C++17's constexpr char_traits into Boost's library."	Bugs	new	To Be Determined	utility	Boost 1.63.0	Problem		string_view,constexpr