I wrote:
> grebe, which is also a PPC64 machine, isn't showing the bug. And I just
> failed to reproduce the problem on a RHEL6 PPC64 box. About to go try
> it on RHEL5, which has a gcc version much closer to what wombat says
> it's using, but I'm not very hopeful about that.
Nope, no luck there either. It's going to be hard to make any progress
on this without investigation on wombat itself.
regards, tom lane
