Re: [boost] Proposal: BOOST_NO_CLASS_TEMPLATE_USING_DECLARATIONS

From: Eric Friedman (ebf_at_[hidden])
Date: 2002-07-19 00:38:51

On Wed, 17 Jul 2002 08:16:06 -0400, Douglas Gregor wrote:

> I'm not sure the macro name is appropriate, because at least on GCC
2.99.3 the 
> problem is unrelated to templates. Removing all of the templates from
the 
> example, GCC 2.95.3 emits the error:
>
>   cannot adjust access to `static void test_base::f()' in `struct
test_using'
>   because of local method `static double test_using::f(double)' with
same name
>
> The problem is that it can't overload a name introduced in the class
and 
> brought in via a using declaration. Maybe 
> BOOST_NO_USING_DECLARATION_OVERLOADS?

Good name.

> (I didn't check the reason for the failure on MSVC)

Yes, MSVC is from where my proposal originated... Its behavior is
slightly different from GCC.

So I guess what we really need are two macros: 
 * BOOST_NO_USING_DECLARATION_OVERLOADS
 * BOOST_NO_USING_DECLARATION_OVERLOADS_FROM_TYPENAME_BASE (long ugly
name -- any suggestions?)

I've attached test files; someone else might want to check them out,
however.

And to answer John Maddock's question: this is needed (in more ways than
one) by the Boost.Variant library under development by Itay Maman and
me.

Thanks,
Eric