id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
4141	typeof/msvc/typeof_impl specializes base class template in derived class	jhs@…	Peder Holt	"This pieces of code from boost/typeof/msvc/typeof_impl.hpp (line 121 in 1.42.0) specializes the base class id2type_tmpl and then declares a local template with the same name.   It is marked as a VC8 bugfeature, but I don't know if that is for this reason, or just because it uses the Microsoft in-class specialization feature.

We ran into this because our failure to accept this was reported as a bug in the EDG front end's MIcrosoft mode.

template<typename ID, typename T>
        struct msvc_extract_type : msvc_extract_type<ID,msvc_extract_type_default_param>
        {
            template<> 
            struct id2type_impl<true>  //VC8.0 specific bugfeature
            {
                typedef T type;
            };
            template<bool>
            struct id2type_impl;

            typedef id2type_impl<true> id2type;
        };"	Bugs	closed	Boost 1.43.0	typeof	Boost 1.42.0	Problem	invalid