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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2021-10-06 15:50:24 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2021-10-06 15:50:24 -0400 |
| commit | 3071bbfe44f36019710190a9273ad2bd4a947878 (patch) | |
| tree | 600cbe63e1019d9e55245dc67d01c707fd40becf /contrib/postgres_fdw/sql | |
| parent | db692b0c84908b4ef5ea4c15fa2d742582ad2cf9 (diff) | |
| download | postgresql-3071bbfe44f36019710190a9273ad2bd4a947878.tar.gz postgresql-3071bbfe44f36019710190a9273ad2bd4a947878.zip | |
Fix null-pointer crash in postgres_fdw's conversion_error_callback.
Commit c7b7311f6 adjusted conversion_error_callback to always use
information from the query's rangetable, to avoid doing catalog lookups
in an already-failed transaction. However, as a result of the utterly
inadequate documentation for make_tuple_from_result_row, I failed to
realize that fsstate could be NULL in some contexts. That led to a
crash if we got a conversion error in such a context. Fix by falling
back to the previous coding when fsstate is NULL. Improve the
commentary, too.
Per report from Andrey Borodin. Back-patch to 9.6, like the previous
patch.
Discussion: https://postgr.es/m/08916396-55E4-4D68-AB3A-BD6066F9E5C0@yandex-team.ru
Diffstat (limited to 'contrib/postgres_fdw/sql')
| -rw-r--r-- | contrib/postgres_fdw/sql/postgres_fdw.sql | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/contrib/postgres_fdw/sql/postgres_fdw.sql b/contrib/postgres_fdw/sql/postgres_fdw.sql index 38f4a7837fe..e7b869f8cea 100644 --- a/contrib/postgres_fdw/sql/postgres_fdw.sql +++ b/contrib/postgres_fdw/sql/postgres_fdw.sql @@ -1164,6 +1164,7 @@ SELECT ftx.x1, ft2.c2, ftx.x8 FROM ft1 ftx(x1,x2,x3,x4,x5,x6,x7,x8), ft2 SELECT ftx.x1, ft2.c2, ftx FROM ft1 ftx(x1,x2,x3,x4,x5,x6,x7,x8), ft2 WHERE ftx.x1 = ft2.c1 AND ftx.x1 = 1; -- ERROR SELECT sum(c2), array_agg(c8) FROM ft1 GROUP BY c8; -- ERROR +ANALYZE ft1; -- ERROR ALTER FOREIGN TABLE ft1 ALTER COLUMN c8 TYPE user_enum; -- =================================================================== |