id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
9021	Cannot export boost::iostreams::source implementation on MSVC	mathstuf@…	Jonathan Turkanis	"The following fails on MSVC 10 (VS2010) and MSVC 11 (VS2012) at least:

    #include <boost/iostreams/concepts.hpp>
    class __declspec(dllexport) mystream : public boost::iostreams::source {};

with the error:

    error C2338: (is_convertible<Mode, two_sequence>::value)

in concepts.hpp line 47. The same think happens with a sink. Are custom sources and sinks not meant to be exported from a library?"	Bugs	new	To Be Determined	iostreams	Boost 1.54.0	Problem