OpenLDAP: core dump with latest CLANG buildworld.

[Hartmann, O.]

On all FreeBSD 10-CURRENt boxes, built with CLANG, there is no OpenLDAP
anymore since yesterday's buildworld!
OpenLDAP (slapd), the most recent build from the ports (recompiled
everything in hope to fix the problem) coredumps immediately after it
tries to start. Examination of the cause with slapd -d256 doesn't work.

On those boxes working isn't possible at the moment, FreeBSD has still
its trouble with no OpenLDAP present, even if nscd is configured for
caching. It takes ages to login as root or those accounts supposed to be
locally.

Recompiling everything prerequisit for OpenLDAP/SASL revealed that even
now databases/db5 isn't compiling with CLANG anymore (which has before
the last LLVM update).

What happened? Why is CLANG (3.1?) now so picky about some __atomic_...
statements?

Thanks for the help and patience,

O. Hartmann