Re: test020-proxycache segfaults (ITS#3180)

[jongchoi@OpenLDAP.org]

I committed a patch a minute ago.... please test in your setup.

> This appears to be caused by a patch for ITS#3133 in slapd/ctxcsn.c. I
> think adding a check in front like this
>    if (!op->o_bd->be_pending_csn_list) return;
> may fix it. If we require the be_pending_csn_list pointer to be
> populated, there are several overlays that use dummy backend structures
> that will need to be updated. Jong?

Howard, I think the second one is the right approach because the
be_pending_csn_list needs to be maintained also for the backend used for the
proxy cache. Are there more overlays that use dummy backend structures ?