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Fix setting next multixid's offset at offset wraparound
authorHeikki Linnakangas <heikki.linnakangas@iki.fi>
Fri, 5 Dec 2025 09:32:38 +0000 (11:32 +0200)
committerHeikki Linnakangas <heikki.linnakangas@iki.fi>
Fri, 5 Dec 2025 09:35:20 +0000 (11:35 +0200)
commit02ba5e3be4f3520a45f3c9c22f61d62c4eadbb76
tree9c4a786baaa71f06a33239654b8efa5bca530d86tree | snapshot
parent28c5be4aecda3b692aabc5387de66806a37e0135commit | diff
Fix setting next multixid's offset at offset wraparound

In commit 789d65364c, we started updating the next multixid's offset
too when recording a multixid, so that it can always be used to
calculate the number of members. I got it wrong at offset wraparound:
we need to skip over offset 0. Fix that.

Discussion: https://www.postgresql.org/message-id/d9996478-389a-4340-8735-bfad456b313c@iki.fi
Backpatch-through: 14
src/backend/access/transam/multixact.c diff | blob | blame | history
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