undefined symbol: mro_meta_init on 5.10.0 (was: speeding up XS_DBI_dispatch())

On Sun, Feb 05, 2012 at 09:04:23PM +0000, Dave Mitchell wrote:
> 
> Anyway, attached is the final patch.
> I've tested it under 5.8.1, 5.8.9, 5.14.2 and 5.15.7, with various
> permutations of threaded builds.

I've just noticed that DBI 1.617_901 has been failing on perl 5.10.0
http://matrix.cpantesters.org/?dist=DBI+1.617_901

The issue seems to be "undefined symbol: mro_meta_init" e.g.:
http://www.cpantesters.org/cpan/report/ba083076-540a-11e1-a48f-e7fb434ae6f1

Any ideas?

Tim.