From 19fe10c3e9609d48c1240667e4400395dd8e9a3b Mon Sep 17 00:00:00 2001
From: Sergei Golubchik <serg@mariadb.org>
Date: Wed, 3 Aug 2016 20:39:47 +0200
Subject: [PATCH] MDEV-6581 Writing to TEMPORARY TABLE not possible in
 read-only

don't mark transactions read-write if no real storage engine is affected (only binlog writes).
---
 sql/handler.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sql/handler.cc b/sql/handler.cc
index d528c0aea7aaa..5fc756020398e 100644
--- a/sql/handler.cc
+++ b/sql/handler.cc
@@ -1238,7 +1238,8 @@ int ha_commit_trans(THD *thd, bool all)
 
   uint rw_ha_count= ha_check_and_coalesce_trx_read_only(thd, ha_info, all);
   /* rw_trans is TRUE when we in a transaction changing data */
-  bool rw_trans= is_real_trans && (rw_ha_count > 0);
+  bool rw_trans= is_real_trans &&
+                 (rw_ha_count > !thd->is_current_stmt_binlog_disabled());
   MDL_request mdl_request;
 
   if (rw_trans)