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amcheck: Use correct varlena size accessor in bt_normalize_tuple()

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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
This commit is contained in:
Alexander Korotkov 2026-06-14 02:49:05 +03:00
parent 3e3d7875e9
commit da1eff08a5
1 changed files with 1 additions and 1 deletions
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2
contrib/amcheck/verify_nbtree.c
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@ -2891,7 +2891,7 @@ bt_normalize_tuple(BtreeCheckState *state, IndexTuple itup)
ItemPointerGetOffsetNumber(&(itup->t_tid)),
RelationGetRelationName(state->rel))));
else if (!VARATT_IS_COMPRESSED(DatumGetPointer(normalized[i])) &&
VARSIZE(DatumGetPointer(normalized[i])) > TOAST_INDEX_TARGET &&
VARSIZE_ANY(DatumGetPointer(normalized[i])) > TOAST_INDEX_TARGET &&
(att->attstorage == TYPSTORAGE_EXTENDED ||
att->attstorage == TYPSTORAGE_MAIN))
{