[Dovecot] v2.2 getting NULL pointer reference with shared namespace in mailbox_tree?

[Timo Sirainen]

On Fri, 2013-03-22 at 18:34 +0100, Walter Steiner wrote:
> > You most likely want to have subscriptions=no for your shared namespace. Also you most likely want to enable ACL plugin.
> 
> Yes - thank you for your comment!  The ACLs I had configured before are
> not enabled in this minimalistic configuration because of crashes when
> running doveadm backup -R ... imapc: with ACLs enabled.
> 
> You wrote that you are continuing debugging "my problem".  Regardless
> of this, should I investigate / file this ACL (related) bug?
> 
> With todays nightly:
> 
> dsync(wsunpriv at iai.uni-bonn.de): Panic: file imapc-list.c: line 199 (imapc_list_get_vname): assertion failed: (strncmp(prefix, storage_name, prefix_len) == 0 && storage_name[prefix_len] == list->sep)

Oh, and this would be good to solve too. What does it say with gdb:

gdb dsync core
fr 5
p prefix
p storage_name
p prefix_len
p list.sep
p list.ns.prefix