=== modified file 'mysql-test/r/not_partition.result'
--- mysql-test/r/not_partition.result	2013-09-14 01:09:36 +0000
+++ mysql-test/r/not_partition.result	2014-03-11 10:38:14 +0000
@@ -85,3 +85,18 @@ explain partitions select * from t1 wher
 id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	NULL	ALL	NULL	NULL	NULL	NULL	5	Using where
 drop table t1;
+#
+# bug#11760213-52599: ALTER TABLE REMOVE PARTITIONING ON NON-PARTITIONED
+#                                 TABLE CORRUPTS MYISAM
+DROP TABLE if exists `t1`;
+CREATE TABLE  `t1`(`a` INT)ENGINE=myisam;
+ALTER TABLE `t1` ADD COLUMN `b` INT;
+CREATE UNIQUE INDEX `i1` ON `t1`(`b`);
+CREATE UNIQUE INDEX `i2` ON `t1`(`a`);
+ALTER TABLE `t1` ADD PRIMARY KEY  (`a`);
+ALTER TABLE `t1` REMOVE PARTITIONING;
+ERROR HY000: The 'partitioning' feature is disabled; you need MySQL built with '--with-plugin-partition' to have it working
+CHECK TABLE `t1` EXTENDED;
+Table	Op	Msg_type	Msg_text
+test.t1	check	status	OK
+DROP TABLE t1;

=== modified file 'mysql-test/t/not_partition.test'
--- mysql-test/t/not_partition.test	2013-09-14 01:09:36 +0000
+++ mysql-test/t/not_partition.test	2014-03-11 10:38:14 +0000
@@ -84,3 +84,18 @@ create table t1 (a varchar(10) charset l
 insert into t1 values (''),(' '),('a'),('a '),('a  ');
 explain partitions select * from t1 where a='a ' OR a='a';
 drop table t1;
+--echo #
+--echo # bug#11760213-52599: ALTER TABLE REMOVE PARTITIONING ON NON-PARTITIONED
+--echo #                                 TABLE CORRUPTS MYISAM
+--disable_warnings
+DROP TABLE if exists `t1`;
+--enable_warnings
+CREATE TABLE  `t1`(`a` INT)ENGINE=myisam;
+ALTER TABLE `t1` ADD COLUMN `b` INT;
+CREATE UNIQUE INDEX `i1` ON `t1`(`b`);
+CREATE UNIQUE INDEX `i2` ON `t1`(`a`);
+ALTER TABLE `t1` ADD PRIMARY KEY  (`a`);
+--error ER_FEATURE_DISABLED
+ALTER TABLE `t1` REMOVE PARTITIONING;
+CHECK TABLE `t1` EXTENDED;
+DROP TABLE t1;