pgsql: Ensure pg_filenode_relation(0, 0) returns NULL.

Lists: pgsql-committers
From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: pgsql-committers(at)lists(dot)postgresql(dot)org
Subject: pgsql: Ensure pg_filenode_relation(0, 0) returns NULL.
Date: 2021-06-12 17:29:45
Message-ID: [email protected]
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Lists: pgsql-committers

Ensure pg_filenode_relation(0, 0) returns NULL.

Previously, a zero value for the relfilenode resulted in
a confusing error message about "unexpected duplicate".
This function returns NULL for other invalid relfilenode
values, so zero should be treated likewise.

It's been like this all along, so back-patch to all supported
branches.

Justin Pryzby

Discussion: https://postgr.es/m/[email protected]

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/1250aad42520fd5a3db68d6381997b7e1f9bb4aa

Modified Files
--------------
src/backend/utils/adt/dbsize.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)