id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
5271	is_convertible with 16-byte aligned types causes errors on MSVC	Mathias Gaunard	John Maddock	"This appears to be caused by passing those types by value to functions, as is done by ""..."".
MSVC doesn't allow types with alignment higher than that of the stack to be passed by value to functions.

The fix would involve forcing everything to be references somehow.

Testcase:
{{{
#include <boost/type_traits/is_convertible.hpp>

struct A
{
    __declspec(align(16)) int value;
};

struct B
{
};

typedef boost::is_convertible<A, B>::type C;
}}}"	Bugs	closed	To Be Determined	type_traits	Boost Development Trunk	Problem	fixed	is_convertible msvc alignment