id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
11449	[C++11] is_polymorphic doesn't work with final-ed class in MSVC.	Kohei Takahashi <flast@…>	John Maddock	"Following code don't compile in MSVC 12 and 14 RC: I didn't test with other versions.

{{{
#!c++
#include <type_traits>
#include <boost/type_traits/is_polymorphic.hpp>

struct S final {};

int main()
{
	static_assert(!std::is_polymorphic<S>::value, ""S should not be a polymorphic type""); // works fine
	static_assert(boost::is_polymorphic<final>::value, ""hmm...""); // hard error
}
}}}

[[Image(66bfcbfd052b0b94e6fe284d4a2ac78a.png)]]

The error message says:

    'boost::detail::is_polymorphic_impl1<T>::d1' cannot derive from 'S' because it is declared as 'final'.
"	Bugs	closed	Boost 1.60.0	type_traits	Boost Development Trunk	Problem	fixed