Fix use-after-free around DISTINCT transition function calls. Have tuplesort_gettupleslot() copy the contents of its current table slot as needed. This is based on an approach taken by tuplestore_gettupleslot(). In the future, tuplesort_gettupleslot() may also be taught to avoid copying the tuple where caller can determine that that is safe (the tuplestore_gettupleslot() interface already offers this option to callers).
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Patch by Peter Geoghegan. Fixes bug #14344, reported by Regina Obe. Report: <20160929035538.20224.39...@wrigleys.postgresql.org> Backpatch-through: 9.6 Branch ------ REL9_6_STABLE Details ------- http://git.postgresql.org/pg/commitdiff/a5f0bd77a2fab60a52dc335a63efc21abc806aa7 Modified Files -------------- src/backend/utils/sort/tuplesort.c | 9 +++++++++ 1 file changed, 9 insertions(+) -- Sent via pgsql-committers mailing list (pgsql-committers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-committers
