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(parent: 5129026) | patch
Fix division by zero in _bt_vacuum_needs_cleanup()
authorAlexander Korotkov <akorotkov@postgresql.org>
Mon, 15 Apr 2019 17:20:43 +0000 (20:20 +0300)
committerAlexander Korotkov <akorotkov@postgresql.org>
Mon, 15 Apr 2019 18:52:32 +0000 (21:52 +0300)
commit0d68ad3fc28377d36a3e1dd8b0e2ff47e693e552
tree01f1e2feb7e82303f7585103b4e0222f267dfc3atree | snapshot
parent51290264346f0afce9752e5f6c957e1bfa3d2391commit | diff
Fix division by zero in _bt_vacuum_needs_cleanup()

Checks inside _bt_vacuum_needs_cleanup() allow division by zero to happen when
metad->btm_last_cleanup_num_heap_tuples == 0.  This commit adjusts the
expression so that no division by zero might happen.

Reported-by: Piotr Stefaniak
Discussion: https://postgr.es/m/DB8PR03MB5931C41F7787A95313F08322F22A0%40DB8PR03MB5931.eurprd03.prod.outlook.com
Reviewed-by: Masahiko Sawada
Backpatch-through: 11
src/backend/access/nbtree/nbtree.c diff | blob | history
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