Re: [Boost-users] Problem with 'cannot instantiate abstract class' after switching from BOOST 1.33.0 to 1.34.1 (also VS2005 -> VS2008)

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