id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
9018	No cross-version constructor	Daryle Walker	Daryle Walker	"I was writing a numeric class template, and it has constructor templates for cross-version conversion.  When I tested with two `boost::rational` instantiations as the component types, the code calls `static_cast` at the component level, which fails since we never defined that between `rational` instantiations.  (There's the `boost::rational_cast` function template, but that doesn't help in generic code.)  Let's fix that.

We could be fancy and add a non-explicit constructor template for when the component types are implicitly convertible, and an explicit version otherwise, but that would be rude to add C++11 features to a class that's otherwise C++98.  Maybe we'll add it someday....
"	Bugs	new	To Be Determined	rational	Boost 1.54.0	Problem