Excerpts from Stephen Frost's message of mar may 24 22:56:21 -0400 2011:
> A couple of notes regarding the patch:
>
> First, it uses ffs(), which might not be fully portable.. We could
> certainly implement the same thing in userspace and use ffs() when
> it's available.
Err, see RIGHTMOST_ONE in bitmapset.c.
--
Álvaro Herrera <alvherre@commandprompt.com>
The PostgreSQL Company - Command Prompt, Inc.
PostgreSQL Replication, Consulting, Custom Development, 24x7 support