1 files changed, 96 insertions, 0 deletions
diff --git a/mysql-test/main/stack-crash.test b/mysql-test/main/stack-crash.test
new file mode 100644
index 00000000..e4feb95a
--- /dev/null
+++ b/mysql-test/main/stack-crash.test
@@ -0,0 +1,96 @@
+#
+# Test to ensure that we don't get stack overflows
+#
+
+drop table if exists t1,t2;
+
+#
+# MDEV-5724
+# Server crashes on SQL select containing more group by and left join
+# statements
+# This was because record_buffer was 300,000 bytes and caused stack overflow
+#
+
+CREATE TABLE t1 (
+  `sspo_id` int(11) NOT NULL AUTO_INCREMENT,
+  `sspo_uid` int(11) NOT NULL DEFAULT '0',
+  `sspo_type` varchar(1) NOT NULL DEFAULT 'P',
+  `sspo_text` longtext NOT NULL,
+  `sspo_image` varchar(255) NOT NULL,
+  `sspo_source` int(11) NOT NULL DEFAULT '0',
+  `sspo_event_name` varchar(255) NOT NULL DEFAULT '',
+  `sspo_event_location` varchar(255) NOT NULL DEFAULT '',
+  `sspo_event_date` datetime DEFAULT NULL,
+  `sspo_remote_title` varchar(255) NOT NULL,
+  `sspo_remote_url` varchar(255) NOT NULL,
+  `sspo_remote_desc` text NOT NULL,
+  `sspo_remote_image` varchar(255) NOT NULL,
+  `sspo_obj_status` varchar(1) NOT NULL DEFAULT 'A',
+  `sspo_cr_date` datetime NOT NULL DEFAULT '1970-01-01 00:00:00',
+  `sspo_cr_uid` int(11) NOT NULL DEFAULT '0',
+  `sspo_lu_date` datetime NOT NULL DEFAULT '1970-01-01 00:00:00',
+  `sspo_lu_uid` int(11) NOT NULL DEFAULT '0',
+  PRIMARY KEY (`sspo_id`),
+  KEY `post_uid` (`sspo_uid`,`sspo_cr_date`)
+) AUTO_INCREMENT=30 DEFAULT CHARSET=utf8;
+INSERT INTO t1 VALUES (1,2,'P','test1','',0,'','',NULL,'','','','','A','2013-09-30 00:19:32',2,'2013-09-30 00:19:32',2),(2,2,'P','bbb','',0,'','',NULL,'','','','','A','2013-10-02 15:06:35',2,'2013-10-02 15:06:35',2);
+
+CREATE TABLE `t2` (
+  `spoo_id` int(11) NOT NULL AUTO_INCREMENT,
+  `spoo_user_type_id` int(11) NOT NULL DEFAULT '0',
+  `spoo_uid` int(11) NOT NULL DEFAULT '0',
+  `spoo_option_id` int(11) NOT NULL DEFAULT '0',
+  `spoo_value` varchar(10000) NOT NULL,
+  `spoo_obj_status` varchar(1) NOT NULL DEFAULT 'A',
+  `spoo_cr_date` datetime NOT NULL DEFAULT '1970-01-01 00:00:00',
+  `spoo_cr_uid` int(11) NOT NULL DEFAULT '0',
+  `spoo_lu_date` datetime NOT NULL DEFAULT '1970-01-01 00:00:00',
+  `spoo_lu_uid` int(11) NOT NULL DEFAULT '0',
+  PRIMARY KEY (`spoo_id`),
+  KEY `object_option_main_idx` (`spoo_user_type_id`,`spoo_uid`,`spoo_option_id`,`spoo_value`(255))
+) AUTO_INCREMENT=107 DEFAULT CHARSET=utf8;
+INSERT INTO `t2` VALUES (19,1,2,6,'Dortmund','A','2013-09-26 01:36:51',2,'2013-09-26 01:36:51',2),(20,1,2,8,'49','A','2013-09-26 01:36:51',2,'2013-09-26 01:36:51',2);
+
+SELECT Count(*)
+FROM   t1 AS tbl
+       LEFT JOIN t2 a
+              ON a.spoo_uid = sspo_uid
+                 AND a.spoo_option_id = 1
+       LEFT JOIN t2 b
+              ON b.spoo_uid = sspo_uid
+                 AND b.spoo_option_id = 2
+       LEFT JOIN t2 c
+              ON c.spoo_uid = sspo_uid
+                 AND c.spoo_option_id = 3
+       LEFT JOIN t2 d
+              ON d.spoo_uid = sspo_uid
+                 AND d.spoo_option_id = 5
+       LEFT JOIN t2 e
+              ON e.spoo_uid = sspo_uid
+                 AND e.spoo_option_id = 4
+       LEFT JOIN t2 f
+              ON f.spoo_uid = sspo_uid
+                 AND f.spoo_option_id = 11
+       LEFT JOIN t2 g
+              ON g.spoo_uid = sspo_uid
+                 AND g.spoo_option_id = 7
+       LEFT JOIN t2 h
+              ON h.spoo_uid = sspo_uid
+                 AND h.spoo_option_id = 10
+       LEFT JOIN t2 i
+              ON i.spoo_uid = sspo_uid
+                 AND i.spoo_option_id = 18
+       LEFT JOIN t2 j
+              ON j.spoo_uid = sspo_uid
+                 AND j.spoo_option_id = 6
+GROUP  BY a.spoo_value,
+          b.spoo_value,
+          c.spoo_value,
+          d.spoo_value,
+          e.spoo_value,
+          f.spoo_value,
+          g.spoo_value,
+          h.spoo_value,
+          i.spoo_value,
+          j.spoo_value;
+drop table t1,t2;