id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
9747	Warning from template_arity_impl<F,N> using GCC 4.8.2	Hartmut Schirmer <h.schirmer@…>	Aleksey Gurtovoy	"This code
{{{
template< typename F, int N >
struct template_arity_impl
{
    BOOST_STATIC_CONSTANT(int, value =
          sizeof(::boost::mpl::aux::arity_helper(type_wrapper<F>(), arity_tag<N>())) - 1
        );
};
}}}

from boost/mpl/aux_/preprocessed/gcc/template_arity.hpp 
assigns int value = sizeof(...) causing a sign-conversion warning.
"	Bugs	new	To Be Determined	mpl	Boost 1.55.0	Problem