From: Tom Lane <tgl@sss.pgh.pa.us>
To: pgsql-committers@lists.postgresql.org
Subject: pgsql: Fix finalization of decompressor astreamers.
Date: Sun, 22 Mar 2026 22:07:03 +0000
Message-ID: <E1w4Qwo-000zUZ-2w@gemulon.postgresql.org> (raw)
Fix finalization of decompressor astreamers.
Send the correct amount of data to the next astreamer, not the
whole allocated buffer size. This bug escaped detection because
in present uses the next astreamer is always a tar-file parser
which is insensitive to trailing garbage. But that may not
be true in future uses.
Author: Andrew Dunstan <andrew@dunslane.net>
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/2178517.1774064942@sss.pgh.pa.us
Backpatch-through: 15
Branch
------
REL_15_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/5540f9c430f65631887d31fa26dfdfa576c1c17e
Modified Files
--------------
src/bin/pg_basebackup/bbstreamer_gzip.c | 9 +++++----
src/bin/pg_basebackup/bbstreamer_lz4.c | 9 +++++----
src/bin/pg_basebackup/bbstreamer_zstd.c | 2 +-
3 files changed, 11 insertions(+), 9 deletions(-)
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-committers@postgresql.org
Cc: tgl@sss.pgh.pa.us, pgsql-committers@lists.postgresql.org
Subject: Re: pgsql: Fix finalization of decompressor astreamers.
In-Reply-To: <E1w4Qwo-000zUZ-2w@gemulon.postgresql.org>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox