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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2021-06-12 13:29:24 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2021-06-12 13:29:24 -0400 |
| commit | 26a0535334ce31b12baf146ad0860c10c4947913 (patch) | |
| tree | 4d8fd3f5d1c9ee2710d80ceb17188762048b4eb2 /src/backend/utils/adt/dbsize.c | |
| parent | 4745c119e01a09f927cc67cecab68c24e21b622c (diff) | |
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/20210612023324.GT16435@telsasoft.com
Diffstat (limited to 'src/backend/utils/adt/dbsize.c')
| -rw-r--r-- | src/backend/utils/adt/dbsize.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/backend/utils/adt/dbsize.c b/src/backend/utils/adt/dbsize.c index 515e30d1777..ff2a0160bfb 100644 --- a/src/backend/utils/adt/dbsize.c +++ b/src/backend/utils/adt/dbsize.c @@ -926,7 +926,11 @@ pg_filenode_relation(PG_FUNCTION_ARGS) { Oid reltablespace = PG_GETARG_OID(0); Oid relfilenode = PG_GETARG_OID(1); - Oid heaprel = InvalidOid; + Oid heaprel; + + /* test needed so RelidByRelfilenode doesn't misbehave */ + if (!OidIsValid(relfilenode)) + PG_RETURN_NULL(); heaprel = RelidByRelfilenode(reltablespace, relfilenode); |