From: Tom Lane <tgl@sss.pgh.pa.us>
To: pgsql-committers@lists.postgresql.org
Subject: pgsql: Fix off-by-one Asserts in FreePageBtreeInsertInternal/Leaf.
Date: Thu, 23 Oct 2025 16:33:18 +0000
Message-ID: <E1vByFa-003988-2y@gemulon.postgresql.org> (raw)
Fix off-by-one Asserts in FreePageBtreeInsertInternal/Leaf.
These two functions expect there to be room to insert another item
in the FreePageBtree's array, but their assertions were too weak
to guarantee that. This has little practical effect granting that
the callers are not buggy, but it seems to be misleading late-model
Coverity into complaining about possible array overrun.
Author: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/799984.1761150474@sss.pgh.pa.us
Backpatch-through: 13
Branch
------
REL_16_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/a8838689594d95a3c6342cb86b2be8a3add2d4d1
Modified Files
--------------
src/backend/utils/mmgr/freepage.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
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To: pgsql-committers@postgresql.org
Cc: tgl@sss.pgh.pa.us, pgsql-committers@lists.postgresql.org
Subject: Re: pgsql: Fix off-by-one Asserts in FreePageBtreeInsertInternal/Leaf.
In-Reply-To: <E1vByFa-003988-2y@gemulon.postgresql.org>
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