a7ef273e1c
The PGSTAT_NUM_TABENTRIES macro should have been updated when new fields were added to struct PgStat_MsgTabstat in commit 644828908, but it wasn't. Fix that. Also, add a static assertion that we didn't overrun the intended size limit on stats messages. This will not necessarily catch every mistake in computing the maximum array size for stats messages, but it will catch ones that have practical consequences. (The assertion in fact doesn't complain about the aforementioned error in PGSTAT_NUM_TABENTRIES, because that was not big enough to cause the array length to increase.) No back-patch, as there's no actual bug in existing releases; this is just in the nature of future-proofing. Mark Dilger and Tom Lane
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