id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
1097	keyword.hpp generates many warnings C4180: qualifier applied to function type has no meaning; ignored	Paul A. Bristow	Daniel Wallin	"KEYWORD_050328_HPP 

template <class Tag>
struct keyword
{
    template <class T>
    typename aux::tag<Tag, T>::type const
                                   ^^^^^^^^^ this const is said to be meaningless 

and could be commented out.

    operator=(T& x) const
    {
        typedef typename aux::tag<Tag, T>::type result;
        return result(x);
    }

there are several others similar.

This creates a blizzard of warnings, even at normal warning level 3. (4180 is a level 1 warning).

#ifdef _MSC_VER
#  pragma warning(disable: 4127) // conditional expression is constant.
#  pragma warning(disable: 4512) // assignment operator could not be generated.
#  pragma warning(disable: 4180) // qualifier applied to function type has no meaning; ignored
#endif

produced a quiet compilation.

So I suggest either commenting out the const,

AND push the above disables, and popping at the end.





"	Bugs	closed	To Be Determined	parameter	Boost 1.34.0	Problem	fixed	parameter keyword c4180