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From: Alexander Korotkov <akorotkov@postgresql.org>
To: pgsql-committers@lists.postgresql.org
Subject: pgsql: amcheck: Use correct varlena size accessor in bt_normalize_tuple
Date: Sun, 14 Jun 2026 01:14:09 +0000
Message-ID: <E1wYZQO-000DSM-2m@gemulon.postgresql.org> (raw)

amcheck: Use correct varlena size accessor in bt_normalize_tuple()

bt_normalize_tuple() uses VARSIZE() to get the size of varlena, even though
it's not yet known, that it has a 4-byte header.  Fix this by replacing a
accessor with a universal VARSIZE_ANY().

Backpatch to all supported versions.

Reported-by: Andres Freund <andres@anarazel.de>
Discussion: https://postgr.es/m/7ckc7oka4bvafkf5bwlqs6ygrhlsbhz25ppozfch7zbuxcx3rf%40e4pr4oqenalc
Author: Andrey Borodin <x4mmm@yandex-team.ru>
Reviewed-by: Alexander Korotkov <aekorotkov@gmail.com>
Backpatch-through: 14

Branch
------
REL_17_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/8abb8a1555f4051491eced0307adf218e0f9f34e

Modified Files
--------------
contrib/amcheck/verify_nbtree.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)



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