id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
10678	search by a compatible key and default predicates	maxim.yegorushkin@…	Joaquín M López Muñoz	"Ordered and hashed indexes require predicates for comparing elements, which default to std::equal_to<Key> and std::less<Key> respectively.

At the same time find functions take a compatible key, that does not need to be convertible to Key.

Using std::equal_to<Key> and std::less<Key> breaks find when the compatible key is not convertible to Key because these predicates require both arguments to be of type Key.

Something like C++14 std::equal_to<void> and std::less<void> should be used as the default predicates.
"	Bugs	closed	To Be Determined	multi_index	Boost 1.56.0	Problem	wontfix