Обсуждение: pgsql: Fix wrong logic in TransactionIdInRecentPast()
Fix wrong logic in TransactionIdInRecentPast() The TransactionIdInRecentPast() should return false for all the transactions older than TransamVariables->oldestClogXid. However, the function contains a bug in comparison FullTransactionId to TransactionID allowing full transactions between nextXid - 2^32 and oldestClogXid - 2^31. This commit fixes TransactionIdInRecentPast() by turning the oldestClogXid into FullTransactionId first, then performing the comparison. Backpatch to all supported versions. Reported-by: Egor Chindyaskin Bug: 18212 Discussion: https://postgr.es/m/18212-547307f8adf57262%40postgresql.org Author: Karina Litskevich Reviewed-by: Kyotaro Horiguchi Backpatch-through: 12 Branch ------ REL_12_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/d44060cfcc49d512da1ae9b1b846385748e46d04 Modified Files -------------- src/backend/utils/adt/txid.c | 31 +++++++++++++++++++++---------- 1 file changed, 21 insertions(+), 10 deletions(-)