Subject: Re: [Boost-users] Problem with 'cannot instantiate abstract class' after switching from BOOST 1.33.0 to 1.34.1 (also VS2005 -> VS2008)
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2009-03-13 16:50:01
AMDG
Tobias Alte wrote:
> After switching from BOOST 1.33.0 to 1.34.1 (and also from VS2005 ->
> VS2008) we got a couple of problems with "cannot instantiate abstract
> class" errors.
>
> The application compiles fine in the setup VS2005 + BOOST 1.33.0 but
> suddenly started to throw a couple of "cannot instantiate abstract
> class" errors when using VS2008 + BOOST 1.34.1 .
>
> The errors itself get reported for 'concept_check.hpp' but that header
> did not change between the two BOOST releases (as far as I know - I
> think I made a diff with no results).
>
> I believe that the issue is most likely related to the
> boost::shared_ptr's to templated classes in our code.
>
> I already solved a few of these errors that arose thanks to slightly
> different types in the method definitions thanks to VS2008 having more
> built in types.
>
> However, the current "cannot instantiate abstract class" errors are
> persistently eluding my grasp. And the compiler is not helpful with
> just reporting the error in 'concept_check.hpp' and not where it
> really is.
Can you post the full error message?
In Christ,
Steven Watanabe