pgsql: Fix possible crash with Parallel Bitmap Heap Scan.

From: Robert Haas <rhaas(at)postgresql(dot)org>
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql: Fix possible crash with Parallel Bitmap Heap Scan.
Date: 2017-10-13 19:09:12
Message-ID: [email protected]
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Fix possible crash with Parallel Bitmap Heap Scan.

If a Parallel Bitmap Heap scan's chain of leftmost descendents
includes a BitmapOr whose first child is a BitmapAnd, the prior coding
would mistakenly create a non-shared TIDBitmap and then try to perform
shared iteration.

Report by Tomas Vondra. Patch by Dilip Kumar.

Discussion: http://postgr.es/m/[email protected]

Branch
------
REL_10_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/a3b1c221893f739950e9232b4b789750f247cee5

Modified Files
--------------
src/backend/optimizer/plan/createplan.c | 4 ++++
1 file changed, 4 insertions(+)

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