From: Tomas Vondra <tomas.vondra@postgresql.org>
To: pgsql-committers@lists.postgresql.org
Subject: pgsql: Use the correct sizeof() in BufFileLoadBuffer
Date: Sat, 25 Jan 2025 01:18:05 +0000
Message-ID: <E1tbUoH-003MHr-1X@gemulon.postgresql.org> (raw)
Use the correct sizeof() in BufFileLoadBuffer
The sizeof() call should reference buffer.data, because that's the
buffer we're reading data into, not the whole PGAlignedBuffer union.
This was introduced by 44cac93464, which replaced the simple buffer
with a PGAlignedBuffer field.
It's benign, because the buffer is the largest field of the union, so
the sizes are the same. But it's easy to trip over this in a patch, so
fix and backpatch. Commit 44cac93464 went into 12, but that's EOL.
Backpatch-through: 13
Discussion: https://postgr.es/m/928bdab1-6567-449f-98c4-339cd2203b87@vondra.me
Branch
------
REL_13_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/88d322a160e3e648406ffa692b0988c1b0fe2db8
Modified Files
--------------
src/backend/storage/file/buffile.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
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To: pgsql-committers@postgresql.org
Cc: tomas.vondra@postgresql.org, pgsql-committers@lists.postgresql.org
Subject: Re: pgsql: Use the correct sizeof() in BufFileLoadBuffer
In-Reply-To: <E1tbUoH-003MHr-1X@gemulon.postgresql.org>
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