[Boost-users] Re: Forwarding problem in base_from_member

From: Jens Theisen (jens.theisen_at_[hidden])
Date: 2005-01-11 09:26:16

Daryle Walker wrote:
> The forwarding problem looks like a C++ "flaw" that can't be solved
> trivially.  So I'm not going to pretend to have a solution.  Take a look at
> <http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2002/n1385.htm> for a
> description of the problem.  (I saw the link in another thread.)

I have read this paper; I just though that the way the forwarding 
problem in base_from_member is addressed is not the best solution.

> I never checked how the constructors work with reference-based arguments,
> either const or non-const.  (I guess that const references could work since
> they can take conversion-generated temporaries.)

Yes. The usual constructor wrappers I have seen so far therefore take 
const&. However, I do not know if there might be any other subtle catches.

Cheers,

Jens