MDEV-16708: fixed assert firing in the method THD::reset_for_the_next_command

1 files changed, 27 insertions, 0 deletions

diff --git a/sql/sql_class.h b/sql/sql_class.h
index 004b92712c8..713523b7d75 100644
--- a/sql/sql_class.h
+++ b/sql/sql_class.h
@@ -5453,6 +5453,33 @@ public:
     return (variables.old_behavior & OLD_MODE_UTF8_IS_UTF8MB3 ?
             MY_UTF8_IS_UTF8MB3 : 0);
   }
+
+  /**
+    Save current lex to the output parameter and reset it to point to
+    main_lex. This method is called from mysql_client_binlog_statement()
+    to temporary
+
+    @param[out] backup_lex  original value of current lex
+  */
+
+  void backup_and_reset_current_lex(LEX **backup_lex)
+  {
+    *backup_lex= lex;
+    lex= &main_lex;
+  }
+
+
+  /**
+    Restore current lex to its original value it had before calling the method
+    backup_and_reset_current_lex().
+
+    @param backup_lex  original value of current lex
+  */
+
+  void restore_current_lex(LEX *backup_lex)
+  {
+    lex= backup_lex;
+  }
 };