Silent death of query-backed merge on absent of mysql

Today I grabbed latest PHP 6 snapshot and run my system through it.
phpinfo works fine, however any part that involves TBS gives me blank screen, because mysql is not compiled in.
It took me a while to find out, because the query is silenced in TBS and I never see the undefined funtion error message.
IIRC PHP5 and up does not have mysql in default build/config.

Any comment?

Wait, never mind, I forgot something... I forgot that TBS doesn't make the connection, so it died on the connection instead.  I have been using helper function for so long that I've forgotten how it really works...