MDEV-29074 GET_BIT variables crash in SET STATEMENT

Author: vuvova

mysql-test/main/set_statement.result

@@ -1242,3 +1242,15 @@ t1	CREATE TABLE `t1` (
  `c1` varchar(3) NOT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 DROP TABLE t1;
+#
+# MDEV-29074 GET_BIT variables crash in SET STATEMENT
+#
+set statement log_queries_not_using_indexes=1 for select @@log_queries_not_using_indexes;
+@@log_queries_not_using_indexes
+1
+select @@log_queries_not_using_indexes;
+@@log_queries_not_using_indexes
+0
+#
+# End of 10.3 tests
+#

mysql-test/main/set_statement.test

@@ -1159,3 +1159,13 @@ SET STATEMENT sql_mode = 'NO_ENGINE_SUBSTITUTION' FOR CREATE TABLE t1 AS SELECT
 SHOW CREATE TABLE t1;
 
 DROP TABLE t1;
+
+--echo #
+--echo # MDEV-29074 GET_BIT variables crash in SET STATEMENT
+--echo #
+set statement log_queries_not_using_indexes=1 for select @@log_queries_not_using_indexes;
+select @@log_queries_not_using_indexes;
+
+--echo #
+--echo # End of 10.3 tests
+--echo #

sql/sql_parse.cc

@@ -3313,6 +3313,7 @@ bool run_set_statement_if_requested(THD *thd, LEX *lex)
  {
  switch (v->var->option.var_type & GET_TYPE_MASK)
  {
+ case GET_BIT:
  case GET_BOOL:
  case GET_INT:
  case GET_LONG: