Re: [Boost-users] [bcp] [shared_ptr][wave]Extractingsubsetofboostforshared_ptr - 3.2MB?

From: Hartmut Kaiser (hartmut.kaiser_at_[hidden])
Date: 2006-02-19 12:54:25

David Abrahams wrote: 

> >> Good, but what would be needed is a sort of tri-state for each 
> >> define:
> >> defined/not defined/maybe defined.
> >
> > This one is easy. Just run the tool twice, once with the 
> macro defined 
> > and once without.
> 
> No, the combinatorics make that intractable.  And you want to 
> re-use common state (when two different settings of a macro 
> leave you with most of the same preprocessor state).

Good point.

Regards Hartmut