From 2771890bab51f716c36541e51940b8b056ca6933 Mon Sep 17 00:00:00 2001
From: Daniel Black <daniel@mariadb.org>
Date: Thu, 18 May 2023 12:08:40 +1000
Subject: [PATCH] =?UTF-8?q?MDEV-31301=20sql/opt=5Fsplit.cc:1043:5:=20warni?=
 =?UTF-8?q?ng:=20=E2=80=98best=5Fparam=5Ftables=E2=80=99=20may=20be=20used?=
 =?UTF-8?q?=20uninitialized?=
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The warning is true, it needs to be initialized.

Caused by: MDEV-26301 / ce7ffe61d836
---
 sql/opt_split.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sql/opt_split.cc b/sql/opt_split.cc
index 6d816552baf..3b3658cb66b 100644
--- a/sql/opt_split.cc
+++ b/sql/opt_split.cc
@@ -963,7 +963,7 @@ SplM_plan_info * JOIN_TAB::choose_best_splitting(uint idx,
   SplM_plan_info *spl_plan= 0;
   uint best_key= 0;
   uint best_key_parts= 0;
-  table_map best_param_tables;
+  table_map best_param_tables= 0L;
   Json_writer_object trace_obj(thd, "choose_best_splitting");
   Json_writer_array  trace_arr(thd, "considered_keys");
   /*