id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
4706	ValueType requirements seem wrong	Dave Abrahams	nasonov	"According to the doc:

> The specific requirements on value types to be used in an any are:
> 
> A !ValueType is !CopyConstructible [20.1.3].
>
> A !ValueType is optionally Assignable [23.1]. The strong exception-safety guarantee is required for all forms of assignment.
>
> The destructor for a !ValueType upholds the no-throw exception-safety guarantee.

The doc seems to be saying that Assignable is not strictly required, but if you supply an assignment operator, it must offer the strong guarantee.   But nothing in any depends on assignability of its !ValueType parameter, much less that it provides the strong guarantee."	Bugs	closed	To Be Determined	any	Boost 1.44.0	Problem	fixed