pgsql: pg_upgrade: Fix inconsistency in memory freeing - Mailing list pgsql-committers

From Michael Paquier
Subject pgsql: pg_upgrade: Fix inconsistency in memory freeing
Date
Msg-id E1tnozS-000428-3B@gemulon.postgresql.org
Whole thread Raw
List pgsql-committers
pg_upgrade: Fix inconsistency in memory freeing

The function in charge of freeing the memory from a result created by
PQescapeIdentifier() has to be PQfreemem(), to ensure that both
allocation and free come from libpq.

One spot in pg_upgrade was not respecting that for pg_database's
datlocale (daticulocale in v16) when the collation provider is libc (aka
datlocale/daticulocale is NULL) with an allocation done using
pg_strdup() and a free with PQfreemem().  The code is changed to always
use PQescapeLiteral() when processing the input.

Oversight in 9637badd9f92.  This commit is similar to 48e4ae9a0707 and
5b94e2753439.

Author: Michael Paquier <michael@paquier.xyz>
Co-authored-by: Ranier Vilela <ranier.vf@gmail.com>
Discussion: https://postgr.es/m/Z601RQxTmIUohdkV@paquier.xyz
Backpatch-through: 16

Branch
------
REL_16_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/9ca2145b00fb5d6272e87f274b0f40df77d81a51

Modified Files
--------------
src/bin/pg_upgrade/pg_upgrade.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)


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