On Thu, Apr 28, 2016 at 10:06 PM, Tom Lane <t...@sss.pgh.pa.us> wrote: > Andreas Seltenreich <seltenre...@gmx.de> writes: >> the following query against the regression database crashes master as of >> 23b09e15. > >> select 1 from depth0 inner join depth1 on (depth0.c = depth1.c) >> where depth0.c @@ depth1.c limit 1; > > What's going on here is that add_partial_path is recycling a now-dominated > partial path without regard for the fact that there's already a GatherPath > pointing at that old partial path. Later use of the GatherPath tries to > make use of its now-dangling subpath pointer. > > I'd be inclined to think that it's silly to build GatherPaths in advance > of having finalized the list of partial paths for a rel.
Uh ... yeah, that shouldn't be happening. I obviously screwed something up. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers