1 files changed, 50 insertions, 2 deletions
diff --git a/mysql-test/t/multi_update.test b/mysql-test/t/multi_update.test
index 48735304aad..e0a35ca2bb9 100644
--- a/mysql-test/t/multi_update.test
+++ b/mysql-test/t/multi_update.test
@@ -696,6 +696,55 @@ DROP FUNCTION f1;
 DROP TABLE t1;
 
 --echo #
+--echo # MDEV-4123: Incorrect results after multi-table update or
+--echo # assertion `!table || (!table->read_set ||
+--echo # bitmap_is_set(table->read_set, field_index))' failure 
+--echo #
+
+DROP TABLE IF EXISTS t1;
+CREATE TABLE t1 (
+  id int(10) unsigned NOT NULL,
+  level tinyint(3) unsigned NOT NULL,
+  PRIMARY KEY (id)
+);
+INSERT INTO t1 VALUES (2519583,1);
+
+DROP TABLE IF EXISTS t2;
+CREATE TABLE t2 (
+  club_id int(11) NOT NULL DEFAULT '0',
+  profile_id int(11) NOT NULL DEFAULT '0',
+  member_level_id int(11) NOT NULL DEFAULT '0',
+  PRIMARY KEY (profile_id,club_id)
+);
+INSERT INTO t2 VALUES (2,2519583,12);
+
+DROP TABLE IF EXISTS t3;
+CREATE TABLE t3 (
+  member_level_id int(11) unsigned NOT NULL DEFAULT '0',
+  map_level int(11) unsigned NOT NULL DEFAULT '0',
+  map_status int(11) unsigned NOT NULL DEFAULT '0',
+  PRIMARY KEY (member_level_id)
+);
+INSERT INTO t3 VALUES (12,12,1);
+
+CREATE 
+    VIEW v1 AS 
+    select club_id,profile_id,
+      map_level AS member_level_id,map_status AS member_status
+    from (t2 tc join t3 map 
+          on(((tc.member_level_id = map.member_level_id) and
+             (club_id = 2))));
+
+select level, count(*) as cnt from t1 group by level;
+UPDATE t1 c LEFT JOIN v1 t ON (c.id = t.profile_id AND t.club_id = 2)
+  SET c.level = IF (t.member_status IS NULL, 1, IF (t.member_status = 1, 2,3));
+select level, count(*) as cnt from t1 group by level;
+drop view v1;
+drop table t1,t2,t3;
+
+--echo end of tests
+
+--echo #
 --echo # BUG#57373: Multi update+InnoDB reports ER_KEY_NOT_FOUND if a
 --echo #            table is updated twice
 --echo #
@@ -759,6 +808,5 @@ SELECT * FROM t2;
 
 DROP TABLE t1,t2;
 
-
-
+--echo end of 5.5 tests