vacuumdb: Add missing PQfinish() calls to vacuum_one_database().

nathan-bossart · nathan-bossart · commit 8703cdec2055 · 2025-02-04T13:26:57.000-06:00
A few of the version checks in vacuum_one_database() do not call PQfinish() before exiting. This precedent was unintentionally established in commit 00d1e88, and while it's probably not too problematic, it seems better to properly close the connection. Reviewed-by: Daniel Gustafsson <daniel@yesql.se> Discussion: https://postgr.es/m/Z6JAwqN1I8ljTuXp%40nathan Backpatch-through: 13
diff --git a/src/bin/scripts/vacuumdb.c b/src/bin/scripts/vacuumdb.c
@@ -558,20 +558,32 @@ vacuum_one_database(ConnParams *cparams,
 	}
 
 	if (vacopts->min_xid_age != 0 && PQserverVersion(conn) < 90600)
+	{
+		PQfinish(conn);
 		pg_fatal("cannot use the \"%s\" option on server versions older than PostgreSQL %s",
 				 "--min-xid-age", "9.6");
+	}
 
 	if (vacopts->min_mxid_age != 0 && PQserverVersion(conn) < 90600)
+	{
+		PQfinish(conn);
 		pg_fatal("cannot use the \"%s\" option on server versions older than PostgreSQL %s",
 				 "--min-mxid-age", "9.6");
+	}
 
 	if (vacopts->parallel_workers >= 0 && PQserverVersion(conn) < 130000)
+	{
+		PQfinish(conn);
 		pg_fatal("cannot use the \"%s\" option on server versions older than PostgreSQL %s",
 				 "--parallel", "13");
+	}
 
 	if (vacopts->buffer_usage_limit && PQserverVersion(conn) < 160000)
+	{
+		PQfinish(conn);
 		pg_fatal("cannot use the \"%s\" option on server versions older than PostgreSQL %s",
 				 "--buffer-usage-limit", "16");
+	}
 
 	/* skip_database_stats is used automatically if server supports it */
 	vacopts->skip_database_stats = (PQserverVersion(conn) >= 160000);
