Added test cases for LP bug #798625 and LP bug #800085

fixed by the patch for LP bug 798621.

mysql-test/r/derived.result

@@ -464,3 +464,16 @@ a	b	a
 255	8	8
 DROP VIEW v1;
 DROP TABLE t1,t2;
+#
+#  LP bug #800085: crash with a query using a simple derived table 
+#                  (fixed by the patch for bug 798621)
+#
+CREATE TABLE t1 (f1 int, f2 varchar(32)) ;
+INSERT INTO t1 VALUES (NULL,'j'), (8,'c');
+CREATE TABLE t2 (f1 int);
+INSERT INTO t2 VALUES (1), (5);
+SELECT DISTINCT t.f1 FROM (SELECT * FROM t1) AS t, t2
+WHERE t.f2='s' AND t.f2 LIKE '%a%' OR t.f1<>0 ORDER BY t.f2;
+f1
+8
+DROP TABLE t1, t2;

mysql-test/r/view.result

@@ -4207,6 +4207,23 @@ Warnings:
 Note	1003	select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a` from `test`.`t1` left join `test`.`t2` on((`test`.`t2`.`a` = `test`.`t1`.`a`)) where ((`test`.`t1`.`b` = 1) or ((`test`.`t1`.`a` = 'a') and (length(`test`.`t1`.`a`) >= `test`.`t1`.`b`)))
 DROP VIEW v1;
 DROP TABLE t1,t2;
+# Bug#798625: duplicate of the previous one, but without crash  
+CREATE TABLE t1 (f1 int NOT NULL, f2 int, f3 int, f4 varchar(32), f5 int) ;
+INSERT INTO t1 VALUES (20,5,2,'r', 0);
+CREATE VIEW v1 AS SELECT * FROM t1;
+SELECT v1.f4 FROM v1 
+WHERE f1<>0 OR f2<>0 AND f4='v' AND (f2<>0 OR f3<>0 AND f5<>0 OR f4 LIKE '%b%');
+f4
+r
+EXPLAIN EXTENDED
+SELECT v1.f4 FROM v1 
+WHERE f1<>0 OR f2<>0 AND f4='v' AND (f2<>0 OR f3<>0 AND f5<>0 OR f4 LIKE '%b%');
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	system	NULL	NULL	NULL	NULL	1	100.00	
+Warnings:
+Note	1003	select 'r' AS `f4` from `test`.`t1` where ((20 <> 0) or 0)
+DROP VIEW v1;
+DROP TABLE t1;
 #
 # Bug#798576: abort on a GROUP BY query over a view with left join 
 #             that can be converted to inner join

mysql-test/t/derived.test

@@ -369,3 +369,19 @@ SELECT * FROM v1, t1 WHERE v1.b=t1.a  ORDER BY v1.a;
 
 DROP VIEW v1;
 DROP TABLE t1,t2;
+
+--echo #
+--echo #  LP bug #800085: crash with a query using a simple derived table 
+--echo #                  (fixed by the patch for bug 798621)
+--echo #
+
+CREATE TABLE t1 (f1 int, f2 varchar(32)) ;
+INSERT INTO t1 VALUES (NULL,'j'), (8,'c');
+
+CREATE TABLE t2 (f1 int);
+INSERT INTO t2 VALUES (1), (5);
+
+SELECT DISTINCT t.f1 FROM (SELECT * FROM t1) AS t, t2
+  WHERE t.f2='s' AND t.f2 LIKE '%a%' OR t.f1<>0 ORDER BY t.f2;
+
+DROP TABLE t1, t2;

mysql-test/t/view.test

@@ -4156,6 +4156,22 @@ SELECT * FROM v1 LEFT JOIN t2 ON t2.a = v1.a
 DROP VIEW v1;
 DROP TABLE t1,t2;
 
+--echo # Bug#798625: duplicate of the previous one, but without crash  
+
+CREATE TABLE t1 (f1 int NOT NULL, f2 int, f3 int, f4 varchar(32), f5 int) ;
+INSERT INTO t1 VALUES (20,5,2,'r', 0);
+
+CREATE VIEW v1 AS SELECT * FROM t1;
+
+SELECT v1.f4 FROM v1 
+  WHERE f1<>0 OR f2<>0 AND f4='v' AND (f2<>0 OR f3<>0 AND f5<>0 OR f4 LIKE '%b%');
+EXPLAIN EXTENDED
+SELECT v1.f4 FROM v1 
+  WHERE f1<>0 OR f2<>0 AND f4='v' AND (f2<>0 OR f3<>0 AND f5<>0 OR f4 LIKE '%b%');
+
+DROP VIEW v1;
+DROP TABLE t1;
+
 --echo #
 --echo # Bug#798576: abort on a GROUP BY query over a view with left join 
 --echo #             that can be converted to inner join