[Boost-users] BOOST_NO_IS_ABSTRACT defined for SunPRO CC?

Hi, In the upgrade to boost 1.34.1, I noticed that the sunpro_cc.hpp config file now defines BOOST_NO_IS_ABSTRACT for the latest compiler. This affects serialization code that used to work with 1.33.1. The relevant change is here: http://svn.boost.org/trac/boost/changeset/32005 I'm wondering, why was this change made since it seems to work? There is no ticket referenced in the commit. Thanks, Sohail