LP BUG#715759

Pushing test case only. The bug itself was fixed by the
combined patches for LP BUG#717577 and LP BUG#776274.

mysql-test/r/subselect4.result

@@ -1700,3 +1700,21 @@ WHERE (alias2.f10 = alias1.f11) AND (alias1.f11 OR alias1.f3 = 50 AND alias1.f10
 f12	f13
 set @@optimizer_switch=@save_optimizer_switch;
 drop table t1, t2;
+#                                                                                                                                                     
+# LP BUG#715759 Wrong result with in_to_exists=on in maria-5.3-mwl89
+#                                                                                                                                                     
+set @save_optimizer_switch=@@optimizer_switch;
+CREATE TABLE t1 (a1 int, a2 int) ;
+INSERT INTO t1 VALUES (1, 2);
+INSERT INTO t1 VALUES (3, 4);
+CREATE TABLE t2 (b1 int, b2 int) ;
+INSERT INTO t2 VALUES (1, 2);
+SET @@optimizer_switch = 'in_to_exists=on,materialization=off,semijoin=off';
+EXPLAIN SELECT * FROM t1 WHERE a1 IN (SELECT b1 FROM t2 WHERE b1 = b2);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
+2	DEPENDENT SUBQUERY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
+SELECT * FROM t1 WHERE a1 IN (SELECT b1 FROM t2 WHERE b1 = b2);
+a1	a2
+set @@optimizer_switch=@save_optimizer_switch;
+drop table t1, t2;

mysql-test/t/subselect4.test

@@ -1370,3 +1370,23 @@ WHERE ( f12 ) IN (
 
 set @@optimizer_switch=@save_optimizer_switch;
 drop table t1, t2;
+
+--echo #                                                                                                                                                     
+--echo # LP BUG#715759 Wrong result with in_to_exists=on in maria-5.3-mwl89
+--echo #                                                                                                                                                     
+
+set @save_optimizer_switch=@@optimizer_switch;
+CREATE TABLE t1 (a1 int, a2 int) ;
+INSERT INTO t1 VALUES (1, 2);
+INSERT INTO t1 VALUES (3, 4);
+
+CREATE TABLE t2 (b1 int, b2 int) ;
+INSERT INTO t2 VALUES (1, 2);
+
+SET @@optimizer_switch = 'in_to_exists=on,materialization=off,semijoin=off';
+
+EXPLAIN SELECT * FROM t1 WHERE a1 IN (SELECT b1 FROM t2 WHERE b1 = b2);
+SELECT * FROM t1 WHERE a1 IN (SELECT b1 FROM t2 WHERE b1 = b2);
+
+set @@optimizer_switch=@save_optimizer_switch;
+drop table t1, t2;