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(parent: 3839e29) | patch
Check syscache result in AlterStatistics
authorTomas Vondra <[email protected]>
Sun, 23 Jan 2022 01:49:41 +0000 (02:49 +0100)
committerTomas Vondra <[email protected]>
Sun, 23 Jan 2022 02:18:02 +0000 (03:18 +0100)
commita192243c75be0f142f829b3e73548bc7cbd3b90d
tree5b568be216742afcc9a8ddf2509659f220d5746etree
parent3839e29c58b44639bb6800f3415af87f4d1fb655commit | diff
Check syscache result in AlterStatistics

The syscache lookup may return NULL even for valid OID, for example due
to a concurrent DROP STATISTICS, so a HeapTupleIsValid is necessary.
Without it, it may fail with a segfault.

Reported by Alexander Lakhin, patch by me. Backpatch to 13, where ALTER
STATISTICS ... SET STATISTICS was introduced.

Backpatch-through: 13
Discussion: https://postgr.es/m/17372-bf3b6e947e35ae77%40postgresql.org
src/backend/commands/statscmds.c diff | blob | blame | history
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