From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
---|---|
To: | pgsql-committers(at)lists(dot)postgresql(dot)org |
Subject: | pgsql: Fix missed cases in libpq's error handling. |
Date: | 2022-04-21 21:12:57 |
Message-ID: | E1nhe6j-000UBk-Ad@gemulon.postgresql.org |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-committers |
Fix missed cases in libpq's error handling.
Commit 618c16707 invented an "error_result" flag in PGconn, which
intends to represent the state that we have an error condition and
need to build a PGRES_FATAL_ERROR PGresult from the message text in
conn->errorMessage, but have not yet done so. (Postponing construction
of the error object simplifies dealing with out-of-memory conditions
and with concatenation of messages for multiple errors.) For nearly all
purposes, this "virtual" PGresult object should act the same as if it
were already materialized. But a couple of places in fe-protocol3.c
didn't get that memo, and were only testing conn->result as they used
to, without also checking conn->error_result.
In hopes of reducing the probability of similar mistakes in future,
I invented a pgHavePendingResult() macro that includes both tests.
Per report from Peter Eisentraut.
Discussion: https://postgr.es/m/b52277b9-fa66-b027-4a37-fb8989c73ff8@enterprisedb.com
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/914611ea738a3601717990faff0f5d71a0f14a3d
Modified Files
--------------
src/interfaces/libpq/fe-exec.c | 5 +++--
src/interfaces/libpq/fe-protocol3.c | 10 +++++-----
src/interfaces/libpq/libpq-int.h | 8 ++++++++
3 files changed, 16 insertions(+), 7 deletions(-)
From | Date | Subject | |
---|---|---|---|
Next Message | Tom Lane | 2022-04-21 21:59:04 | pgsql: Remove inadequate assertion check in CTE inlining. |
Previous Message | Tom Lane | 2022-04-21 20:23:38 | pgsql: Rethink method for assigning OIDs to the template0 and postgres |