diff --git a/mysql-test/include/have_not_innodb_plugin.inc b/mysql-test/include/have_not_innodb_plugin.inc
new file mode 100644
index 00000000000..aaefbaf661c
--- /dev/null
+++ b/mysql-test/include/have_not_innodb_plugin.inc
@@ -0,0 +1,4 @@
+disable_query_log;
+--require r/not_true.require
+select (PLUGIN_LIBRARY LIKE 'ha_innodb_plugin%') as `TRUE` from information_schema.plugins where PLUGIN_NAME='InnoDB';
+enable_query_log;
diff --git a/mysql-test/r/alter_table.result b/mysql-test/r/alter_table.result
index 5a115e9ea99..db7173d0b47 100644
--- a/mysql-test/r/alter_table.result
+++ b/mysql-test/r/alter_table.result
@@ -1268,4 +1268,66 @@ a	b
 4	b
 5	a
 DROP TABLE t1;
+#
+# Bug#45567: Fast ALTER TABLE broken for enum and set
+#
+DROP TABLE IF EXISTS t1;
+CREATE TABLE t1 (a ENUM('a1','a2'));
+INSERT INTO t1 VALUES ('a1'),('a2');
+# No copy: No modification
+ALTER TABLE t1 MODIFY COLUMN a ENUM('a1','a2');
+affected rows: 0
+info: Records: 0  Duplicates: 0  Warnings: 0
+# No copy: Add new enumeration to the end
+ALTER TABLE t1 MODIFY COLUMN a ENUM('a1','a2','a3');
+affected rows: 0
+info: Records: 0  Duplicates: 0  Warnings: 0
+# Copy: Modify and add new to the end
+ALTER TABLE t1 MODIFY COLUMN a ENUM('a1','a2','xx','a5');
+affected rows: 2
+info: Records: 2  Duplicates: 0  Warnings: 0
+# Copy: Remove from the end
+ALTER TABLE t1 MODIFY COLUMN a ENUM('a1','a2','xx');
+affected rows: 2
+info: Records: 2  Duplicates: 0  Warnings: 0
+# Copy: Add new enumeration
+ALTER TABLE t1 MODIFY COLUMN a ENUM('a1','a2','a0','xx');
+affected rows: 2
+info: Records: 2  Duplicates: 0  Warnings: 0
+# No copy: Add new enumerations to the end
+ALTER TABLE t1 MODIFY COLUMN a ENUM('a1','a2','a0','xx','a5','a6');
+affected rows: 0
+info: Records: 0  Duplicates: 0  Warnings: 0
+DROP TABLE t1;
+CREATE TABLE t1 (a SET('a1','a2'));
+INSERT INTO t1 VALUES ('a1'),('a2');
+# No copy: No modification
+ALTER TABLE t1 MODIFY COLUMN a SET('a1','a2');
+affected rows: 0
+info: Records: 0  Duplicates: 0  Warnings: 0
+# No copy: Add new to the end
+ALTER TABLE t1 MODIFY COLUMN a SET('a1','a2','a3');
+affected rows: 0
+info: Records: 0  Duplicates: 0  Warnings: 0
+# Copy: Modify and add new to the end
+ALTER TABLE t1 MODIFY COLUMN a SET('a1','a2','xx','a5');
+affected rows: 2
+info: Records: 2  Duplicates: 0  Warnings: 0
+# Copy: Remove from the end
+ALTER TABLE t1 MODIFY COLUMN a SET('a1','a2','xx');
+affected rows: 2
+info: Records: 2  Duplicates: 0  Warnings: 0
+# Copy: Add new member
+ALTER TABLE t1 MODIFY COLUMN a SET('a1','a2','a0','xx');
+affected rows: 2
+info: Records: 2  Duplicates: 0  Warnings: 0
+# No copy: Add new to the end
+ALTER TABLE t1 MODIFY COLUMN a SET('a1','a2','a0','xx','a5','a6');
+affected rows: 0
+info: Records: 0  Duplicates: 0  Warnings: 0
+# Copy: Numerical incrase (pack lenght)
+ALTER TABLE t1 MODIFY COLUMN a SET('a1','a2','a0','xx','a5','a6','a7','a8','a9','a10');
+affected rows: 2
+info: Records: 2  Duplicates: 0  Warnings: 0
+DROP TABLE t1;
 End of 5.1 tests
diff --git a/mysql-test/r/delete.result b/mysql-test/r/delete.result
index eb93c69d960..0124a7da35a 100644
--- a/mysql-test/r/delete.result
+++ b/mysql-test/r/delete.result
@@ -279,3 +279,48 @@ ERROR 42000: Incorrect number of arguments for FUNCTION test.f1; expected 0, got
 DROP TABLE t1;
 DROP FUNCTION f1;
 End of 5.0 tests
+#
+# Bug#46958: Assertion in Diagnostics_area::set_ok_status, trigger, 
+# merge table
+#
+CREATE TABLE t1 ( a INT );
+CREATE TABLE t2 ( a INT );
+CREATE TABLE t3 ( a INT );
+INSERT INTO t1 VALUES (1), (2);
+INSERT INTO t2 VALUES (1), (2);
+INSERT INTO t3 VALUES (1), (2);
+CREATE TRIGGER tr1 BEFORE DELETE ON t2
+FOR EACH ROW INSERT INTO no_such_table VALUES (1);
+DELETE t1, t2, t3 FROM t1, t2, t3;
+ERROR 42S02: Table 'test.no_such_table' doesn't exist
+SELECT * FROM t1;
+a
+SELECT * FROM t2;
+a
+1
+2
+SELECT * FROM t3;
+a
+1
+2
+DROP TABLE t1, t2, t3;
+CREATE TABLE t1 ( a INT );
+CREATE TABLE t2 ( a INT );
+CREATE TABLE t3 ( a INT );
+INSERT INTO t1 VALUES (1), (2);
+INSERT INTO t2 VALUES (1), (2);
+INSERT INTO t3 VALUES (1), (2);
+CREATE TRIGGER tr1 AFTER DELETE ON t2
+FOR EACH ROW INSERT INTO no_such_table VALUES (1);
+DELETE t1, t2, t3 FROM t1, t2, t3;
+ERROR 42S02: Table 'test.no_such_table' doesn't exist
+SELECT * FROM t1;
+a
+SELECT * FROM t2;
+a
+2
+SELECT * FROM t3;
+a
+1
+2
+DROP TABLE t1, t2, t3;
diff --git a/mysql-test/r/join.result b/mysql-test/r/join.result
index 736ecf1d90e..77f73532474 100644
--- a/mysql-test/r/join.result
+++ b/mysql-test/r/join.result
@@ -1064,3 +1064,13 @@ a	b	c	d
 128	NULL	128	NULL
 DROP TABLE IF EXISTS t1,t2;
 End of 5.0 tests.
+CREATE TABLE t1 (f1 int);
+CREATE TABLE t2 (f1 int);
+INSERT INTO t2  VALUES (1);
+CREATE VIEW v1 AS SELECT * FROM t2;
+PREPARE stmt FROM 'UPDATE t2 AS A NATURAL JOIN v1 B SET B.f1 = 1';
+EXECUTE stmt;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+DROP VIEW v1;
+DROP TABLE t1, t2;
diff --git a/mysql-test/r/not_true.require b/mysql-test/r/not_true.require
new file mode 100644
index 00000000000..0032832f3d1
--- /dev/null
+++ b/mysql-test/r/not_true.require
@@ -0,0 +1,2 @@
+TRUE
+NULL
diff --git a/mysql-test/r/partition_innodb_builtin.result b/mysql-test/r/partition_innodb_builtin.result
new file mode 100644
index 00000000000..384ce0790a4
--- /dev/null
+++ b/mysql-test/r/partition_innodb_builtin.result
@@ -0,0 +1,39 @@
+SET NAMES utf8;
+CREATE TABLE `t``\""e` (a INT, PRIMARY KEY (a))
+ENGINE=InnoDB
+PARTITION BY RANGE (a)
+SUBPARTITION BY HASH (a)
+(PARTITION `p0``\""e` VALUES LESS THAN (100)
+(SUBPARTITION `sp0``\""e`,
+SUBPARTITION `sp1``\""e`),
+PARTITION `p1``\""e` VALUES LESS THAN (MAXVALUE)
+(SUBPARTITION `sp2``\""e`,
+SUBPARTITION `sp3``\""e`));
+INSERT INTO `t``\""e` VALUES (0), (2), (6), (10), (14), (18), (22);
+START TRANSACTION;
+# con1
+SET NAMES utf8;
+START TRANSACTION;
+# default connection
+UPDATE `t``\""e` SET a = 16 WHERE a = 0;
+# con1
+UPDATE `t``\""e` SET a = 8 WHERE a = 22;
+UPDATE `t``\""e` SET a = 12 WHERE a = 0;
+# default connection
+UPDATE `t``\""e` SET a = 4 WHERE a = 22;
+ERROR 40001: Deadlock found when trying to get lock; try restarting transaction
+# First table reported in 'SHOW ENGINE InnoDB STATUS'
+SHOW ENGINE InnoDB STATUS;
+Type	Name	Status
+InnoDB		index `PRIMARY` of table `test`.`t``\""e` /* Partition `p0``\""e`, Subpartition `sp0``\""e` */
+set @old_sql_mode = @@sql_mode;
+set sql_mode = 'ANSI_QUOTES';
+SHOW ENGINE InnoDB STATUS;
+Type	Name	Status
+InnoDB		index `PRIMARY` of table `test`.`t``\""e` /* Partition `p0``\""e`, Subpartition `sp0``\""e` */
+set @@sql_mode = @old_sql_mode;
+# con1
+ROLLBACK;
+# default connection
+DROP TABLE `t``\""e`;
+SET NAMES DEFAULT;
diff --git a/mysql-test/r/partition_innodb_plugin.result b/mysql-test/r/partition_innodb_plugin.result
new file mode 100644
index 00000000000..dd91eee316a
--- /dev/null
+++ b/mysql-test/r/partition_innodb_plugin.result
@@ -0,0 +1,50 @@
+SET NAMES utf8;
+CREATE TABLE `t``\""e` (a INT, PRIMARY KEY (a))
+ENGINE=InnoDB
+PARTITION BY RANGE (a)
+SUBPARTITION BY HASH (a)
+(PARTITION `p0``\""e` VALUES LESS THAN (100)
+(SUBPARTITION `sp0``\""e`,
+SUBPARTITION `sp1``\""e`),
+PARTITION `p1``\""e` VALUES LESS THAN (MAXVALUE)
+(SUBPARTITION `sp2``\""e`,
+SUBPARTITION `sp3``\""e`));
+INSERT INTO `t``\""e` VALUES (0), (2), (6), (10), (14), (18), (22);
+START TRANSACTION;
+# con1
+SET NAMES utf8;
+START TRANSACTION;
+# default connection
+UPDATE `t``\""e` SET a = 16 WHERE a = 0;
+# con1
+UPDATE `t``\""e` SET a = 8 WHERE a = 22;
+UPDATE `t``\""e` SET a = 12 WHERE a = 0;
+# default connection
+SELECT lock_table, COUNT(*) FROM INFORMATION_SCHEMA.INNODB_LOCKS
+GROUP BY lock_table;
+lock_table	COUNT(*)
+`test`.`t``\""e` /* Partition `p0``\""e`, Subpartition `sp0``\""e` */	2
+set @old_sql_mode = @@sql_mode;
+set sql_mode = 'ANSI_QUOTES';
+SELECT lock_table, COUNT(*) FROM INFORMATION_SCHEMA.INNODB_LOCKS
+GROUP BY lock_table;
+lock_table	COUNT(*)
+"test"."t`\""""e" /* Partition "p0`\""""e", Subpartition "sp0`\""""e" */	2
+set @@sql_mode = @old_sql_mode;
+UPDATE `t``\""e` SET a = 4 WHERE a = 22;
+ERROR 40001: Deadlock found when trying to get lock; try restarting transaction
+# First table reported in 'SHOW ENGINE InnoDB STATUS'
+SHOW ENGINE InnoDB STATUS;
+Type	Name	Status
+InnoDB		index `PRIMARY` of table `test`.`t``\""e` /* Partition `p0``\""e`, Subpartition `sp0``\""e` */
+set @old_sql_mode = @@sql_mode;
+set sql_mode = 'ANSI_QUOTES';
+SHOW ENGINE InnoDB STATUS;
+Type	Name	Status
+InnoDB		index `PRIMARY` of table `test`.`t``\""e` /* Partition `p0``\""e`, Subpartition `sp0``\""e` */
+set @@sql_mode = @old_sql_mode;
+# con1
+ROLLBACK;
+# default connection
+DROP TABLE `t``\""e`;
+SET NAMES DEFAULT;
diff --git a/mysql-test/r/subselect4.result b/mysql-test/r/subselect4.result
index 68577cb2a4c..482e0045840 100644
--- a/mysql-test/r/subselect4.result
+++ b/mysql-test/r/subselect4.result
@@ -27,4 +27,35 @@ SELECT 1;
 1
 1
 DROP TABLE t1,t2,t3;
+#
+# Bug #47106: Crash / segfault on adding EXPLAIN to a non-crashing 
+# query
+#
+CREATE TABLE t1 (
+a INT,
+b INT,
+PRIMARY KEY (a),
+KEY b (b)
+);
+INSERT INTO t1 VALUES (1, 1), (2, 1);
+CREATE TABLE t2 LIKE t1;
+INSERT INTO t2 SELECT * FROM t1;
+CREATE TABLE t3 LIKE t1;
+INSERT INTO t3 SELECT * FROM t1;
+# Should not crash.
+# Should have 1 impossible where and 2 dependent subqs.
+EXPLAIN
+SELECT
+(SELECT 1 FROM t1,t2 WHERE t2.b > t3.b)
+FROM t3 WHERE 1 = 0 GROUP BY 1;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE
+2	DEPENDENT SUBQUERY	t1	index	NULL	PRIMARY	4	NULL	2	Using index
+2	DEPENDENT SUBQUERY	t2	index	b	b	5	NULL	2	Using where; Using index; Using join buffer
+# should return 0 rows
+SELECT
+(SELECT 1 FROM t1,t2 WHERE t2.b > t3.b)
+FROM t3 WHERE 1 = 0 GROUP BY 1;
+(SELECT 1 FROM t1,t2 WHERE t2.b > t3.b)
+DROP TABLE t1,t2,t3;
 End of 5.0 tests.
diff --git a/mysql-test/t/alter_table.test b/mysql-test/t/alter_table.test
index ae48d5a8736..17549745203 100644
--- a/mysql-test/t/alter_table.test
+++ b/mysql-test/t/alter_table.test
@@ -1000,4 +1000,50 @@ ALTER TABLE t1 MODIFY b ENUM('a', 'z', 'b', 'c') NOT NULL;
 SELECT * FROM t1;
 DROP TABLE t1;
 
+--echo #
+--echo # Bug#45567: Fast ALTER TABLE broken for enum and set
+--echo #
+
+--disable_warnings
+DROP TABLE IF EXISTS t1;
+--enable_warnings
+
+CREATE TABLE t1 (a ENUM('a1','a2'));
+INSERT INTO t1 VALUES ('a1'),('a2');
+--enable_info
+--echo # No copy: No modification
+ALTER TABLE t1 MODIFY COLUMN a ENUM('a1','a2');
+--echo # No copy: Add new enumeration to the end
+ALTER TABLE t1 MODIFY COLUMN a ENUM('a1','a2','a3');
+--echo # Copy: Modify and add new to the end
+ALTER TABLE t1 MODIFY COLUMN a ENUM('a1','a2','xx','a5');
+--echo # Copy: Remove from the end
+ALTER TABLE t1 MODIFY COLUMN a ENUM('a1','a2','xx');
+--echo # Copy: Add new enumeration
+ALTER TABLE t1 MODIFY COLUMN a ENUM('a1','a2','a0','xx');
+--echo # No copy: Add new enumerations to the end
+ALTER TABLE t1 MODIFY COLUMN a ENUM('a1','a2','a0','xx','a5','a6');
+--disable_info
+DROP TABLE t1;
+
+CREATE TABLE t1 (a SET('a1','a2'));
+INSERT INTO t1 VALUES ('a1'),('a2');
+--enable_info
+--echo # No copy: No modification
+ALTER TABLE t1 MODIFY COLUMN a SET('a1','a2');
+--echo # No copy: Add new to the end
+ALTER TABLE t1 MODIFY COLUMN a SET('a1','a2','a3');
+--echo # Copy: Modify and add new to the end
+ALTER TABLE t1 MODIFY COLUMN a SET('a1','a2','xx','a5');
+--echo # Copy: Remove from the end
+ALTER TABLE t1 MODIFY COLUMN a SET('a1','a2','xx');
+--echo # Copy: Add new member
+ALTER TABLE t1 MODIFY COLUMN a SET('a1','a2','a0','xx');
+--echo # No copy: Add new to the end
+ALTER TABLE t1 MODIFY COLUMN a SET('a1','a2','a0','xx','a5','a6');
+--echo # Copy: Numerical incrase (pack lenght)
+ALTER TABLE t1 MODIFY COLUMN a SET('a1','a2','a0','xx','a5','a6','a7','a8','a9','a10');
+--disable_info
+DROP TABLE t1;
+
 --echo End of 5.1 tests
diff --git a/mysql-test/t/delete.test b/mysql-test/t/delete.test
index 602e30687c8..d77f5eb128b 100644
--- a/mysql-test/t/delete.test
+++ b/mysql-test/t/delete.test
@@ -292,3 +292,47 @@ DROP TABLE t1;
 DROP FUNCTION f1;
 
 --echo End of 5.0 tests
+
+--echo #
+--echo # Bug#46958: Assertion in Diagnostics_area::set_ok_status, trigger, 
+--echo # merge table
+--echo #
+CREATE TABLE t1 ( a INT );
+CREATE TABLE t2 ( a INT );
+CREATE TABLE t3 ( a INT );
+
+INSERT INTO t1 VALUES (1), (2);
+INSERT INTO t2 VALUES (1), (2);
+INSERT INTO t3 VALUES (1), (2);
+
+CREATE TRIGGER tr1 BEFORE DELETE ON t2
+FOR EACH ROW INSERT INTO no_such_table VALUES (1);
+
+--error ER_NO_SUCH_TABLE
+DELETE t1, t2, t3 FROM t1, t2, t3;
+
+SELECT * FROM t1;
+SELECT * FROM t2;
+SELECT * FROM t3;
+
+DROP TABLE t1, t2, t3;
+
+CREATE TABLE t1 ( a INT );
+CREATE TABLE t2 ( a INT );
+CREATE TABLE t3 ( a INT );
+
+INSERT INTO t1 VALUES (1), (2);
+INSERT INTO t2 VALUES (1), (2);
+INSERT INTO t3 VALUES (1), (2);
+
+CREATE TRIGGER tr1 AFTER DELETE ON t2
+FOR EACH ROW INSERT INTO no_such_table VALUES (1);
+
+--error ER_NO_SUCH_TABLE
+DELETE t1, t2, t3 FROM t1, t2, t3;
+
+SELECT * FROM t1;
+SELECT * FROM t2;
+SELECT * FROM t3;
+
+DROP TABLE t1, t2, t3;
diff --git a/mysql-test/t/disabled.def b/mysql-test/t/disabled.def
index 6d8f0af0c28..6f0b1716d38 100644
--- a/mysql-test/t/disabled.def
+++ b/mysql-test/t/disabled.def
@@ -12,3 +12,5 @@
 kill                     : Bug#37780 2008-12-03 HHunger need some changes to be robust enough for pushbuild.
 innodb_bug39438          : Bug#42383 2009-01-28 lsoares "This fails in embedded and on windows.  Note that this test is not run on windows and on embedded in PB for main trees currently"
 query_cache_28249        : Bug#43861 2009-03-25 main.query_cache_28249 fails sporadically
+partition_innodb_builtin : Bug#32430 2009-09-25 mattiasj Waiting for push of Innodb changes
+partition_innodb_plugin  : Bug#32430 2009-09-25 mattiasj Waiting for push of Innodb changes
diff --git a/mysql-test/t/join.test b/mysql-test/t/join.test
index b5e30e63f54..1cd05c8cb65 100644
--- a/mysql-test/t/join.test
+++ b/mysql-test/t/join.test
@@ -729,4 +729,24 @@ SELECT * FROM t1 JOIN t2 ON b=c ORDER BY a;
 SELECT * FROM t1 JOIN t2 ON a=c ORDER BY a;
 
 DROP TABLE IF EXISTS t1,t2;
+
 --echo End of 5.0 tests.
+
+
+#
+# Bug#47150 Assertion in Field_long::val_int() on MERGE + TRIGGER + multi-table UPDATE
+#
+CREATE TABLE t1 (f1 int);
+
+CREATE TABLE t2 (f1 int);
+INSERT INTO t2  VALUES (1);
+CREATE VIEW v1 AS SELECT * FROM t2;
+
+PREPARE stmt FROM 'UPDATE t2 AS A NATURAL JOIN v1 B SET B.f1 = 1';
+EXECUTE stmt;
+EXECUTE stmt;
+
+DEALLOCATE PREPARE stmt;
+
+DROP VIEW v1;
+DROP TABLE t1, t2;
diff --git a/mysql-test/t/partition_innodb_builtin.test b/mysql-test/t/partition_innodb_builtin.test
new file mode 100644
index 00000000000..a9be41c7455
--- /dev/null
+++ b/mysql-test/t/partition_innodb_builtin.test
@@ -0,0 +1,67 @@
+--source include/have_partition.inc
+--source include/have_innodb.inc
+--source include/have_not_innodb_plugin.inc
+
+#
+# Bug#32430 - show engine innodb status causes errors
+#
+SET NAMES utf8;
+CREATE TABLE `t``\""e` (a INT, PRIMARY KEY (a))
+ENGINE=InnoDB
+PARTITION BY RANGE (a)
+SUBPARTITION BY HASH (a)
+(PARTITION `p0``\""e` VALUES LESS THAN (100)
+ (SUBPARTITION `sp0``\""e`,
+  SUBPARTITION `sp1``\""e`),
+ PARTITION `p1``\""e` VALUES LESS THAN (MAXVALUE)
+ (SUBPARTITION `sp2``\""e`,
+  SUBPARTITION `sp3``\""e`));
+INSERT INTO `t``\""e` VALUES (0), (2), (6), (10), (14), (18), (22);
+START TRANSACTION;
+--echo # con1
+connect(con1,localhost,root,,);
+SET NAMES utf8;
+START TRANSACTION;
+--echo # default connection
+connection default;
+UPDATE `t``\""e` SET a = 16 WHERE a = 0;
+--echo # con1
+connection con1;
+UPDATE `t``\""e` SET a = 8 WHERE a = 22;
+let $id_1= `SELECT CONNECTION_ID()`;
+SEND;
+UPDATE `t``\""e` SET a = 12 WHERE a = 0;
+--echo # default connection
+connection default;
+let $wait_timeout= 2;
+let $wait_condition= SELECT 1 FROM INFORMATION_SCHEMA.PROCESSLIST
+WHERE ID = $id_1 AND STATE = 'Searching rows for update';
+--source include/wait_condition.inc
+#--echo # tested wait condition $wait_condition_reps times
+--error ER_LOCK_DEADLOCK
+UPDATE `t``\""e` SET a = 4 WHERE a = 22;
+--echo # First table reported in 'SHOW ENGINE InnoDB STATUS'
+# RECORD LOCKS space id 0 page no 50 n bits 80 index `PRIMARY` in \
+# Database `test`, Table `t1`, Partition `p0`, Subpartition `sp0` \
+# trx id 0 775
+# NOTE: replace_regex is very slow on match copy/past '(.*)' regex's
+# on big texts, removing a lot of text before + after makes it much faster.
+#/.*in (.*) trx.*/\1/
+--replace_regex /.*RECORD LOCKS space id [0-9]* page no [0-9]* n bits [0-9]* // / trx id .*// /.*index .* in //
+SHOW ENGINE InnoDB STATUS;
+set @old_sql_mode = @@sql_mode;
+set sql_mode = 'ANSI_QUOTES';
+# INNODB_LOCKS only exists in innodb_plugin
+#SELECT * FROM INFORMATION_SCHEMA.INNODB_LOCKS;
+--replace_regex /.*RECORD LOCKS space id [0-9]* page no [0-9]* n bits [0-9]* // / trx id .*// /.*index .* in //
+SHOW ENGINE InnoDB STATUS;
+set @@sql_mode = @old_sql_mode;
+--echo # con1
+connection con1;
+REAP;
+ROLLBACK;
+disconnect con1;
+--echo # default connection
+connection default;
+DROP TABLE `t``\""e`;
+SET NAMES DEFAULT;
diff --git a/mysql-test/t/partition_innodb_plugin.test b/mysql-test/t/partition_innodb_plugin.test
new file mode 100644
index 00000000000..fed8c96424a
--- /dev/null
+++ b/mysql-test/t/partition_innodb_plugin.test
@@ -0,0 +1,75 @@
+--source include/have_partition.inc
+--source include/have_innodb.inc
+--source suite/innodb/include/have_innodb_plugin.inc
+
+#
+# Bug#32430 - show engine innodb status causes errors
+#
+SET NAMES utf8;
+CREATE TABLE `t``\""e` (a INT, PRIMARY KEY (a))
+ENGINE=InnoDB
+PARTITION BY RANGE (a)
+SUBPARTITION BY HASH (a)
+(PARTITION `p0``\""e` VALUES LESS THAN (100)
+ (SUBPARTITION `sp0``\""e`,
+  SUBPARTITION `sp1``\""e`),
+ PARTITION `p1``\""e` VALUES LESS THAN (MAXVALUE)
+ (SUBPARTITION `sp2``\""e`,
+  SUBPARTITION `sp3``\""e`));
+INSERT INTO `t``\""e` VALUES (0), (2), (6), (10), (14), (18), (22);
+START TRANSACTION;
+--echo # con1
+connect(con1,localhost,root,,);
+SET NAMES utf8;
+START TRANSACTION;
+--echo # default connection
+connection default;
+UPDATE `t``\""e` SET a = 16 WHERE a = 0;
+--echo # con1
+connection con1;
+UPDATE `t``\""e` SET a = 8 WHERE a = 22;
+let $id_1= `SELECT CONNECTION_ID()`;
+SEND;
+UPDATE `t``\""e` SET a = 12 WHERE a = 0;
+--echo # default connection
+connection default;
+let $wait_timeout= 2;
+let $wait_condition= SELECT 1 FROM INFORMATION_SCHEMA.PROCESSLIST
+WHERE ID = $id_1 AND STATE = 'Searching rows for update';
+--source include/wait_condition.inc
+#--echo # tested wait condition $wait_condition_reps times
+# INNODB_LOCKS only exists in innodb_plugin
+--sorted_result
+SELECT lock_table, COUNT(*) FROM INFORMATION_SCHEMA.INNODB_LOCKS
+GROUP BY lock_table;
+set @old_sql_mode = @@sql_mode;
+set sql_mode = 'ANSI_QUOTES';
+--sorted_result
+SELECT lock_table, COUNT(*) FROM INFORMATION_SCHEMA.INNODB_LOCKS
+GROUP BY lock_table;
+set @@sql_mode = @old_sql_mode;
+--error ER_LOCK_DEADLOCK
+UPDATE `t``\""e` SET a = 4 WHERE a = 22;
+--echo # First table reported in 'SHOW ENGINE InnoDB STATUS'
+# RECORD LOCKS space id 0 page no 50 n bits 80 index `PRIMARY` in \
+# Database `test`, Table `t1`, Partition `p0`, Subpartition `sp0` \
+# trx id 0 775
+# NOTE: replace_regex is very slow on match copy/past '(.*)' regex's
+# on big texts, removing a lot of text before + after makes it much faster.
+#/.*in (.*) trx.*/\1/
+--replace_regex /.*RECORD LOCKS space id [0-9]* page no [0-9]* n bits [0-9]* // / trx id .*// /.*index .* in //
+SHOW ENGINE InnoDB STATUS;
+set @old_sql_mode = @@sql_mode;
+set sql_mode = 'ANSI_QUOTES';
+--replace_regex /.*RECORD LOCKS space id [0-9]* page no [0-9]* n bits [0-9]* // / trx id .*// /.*index .* in //
+SHOW ENGINE InnoDB STATUS;
+set @@sql_mode = @old_sql_mode;
+--echo # con1
+connection con1;
+REAP;
+ROLLBACK;
+disconnect con1;
+--echo # default connection
+connection default;
+DROP TABLE `t``\""e`;
+SET NAMES DEFAULT;
diff --git a/mysql-test/t/subselect4.test b/mysql-test/t/subselect4.test
index ff4cdf3c439..440eca22828 100644
--- a/mysql-test/t/subselect4.test
+++ b/mysql-test/t/subselect4.test
@@ -28,5 +28,37 @@ SELECT 1;
 
 DROP TABLE t1,t2,t3;
 
+--echo #
+--echo # Bug #47106: Crash / segfault on adding EXPLAIN to a non-crashing 
+--echo # query
+--echo #
+
+CREATE TABLE t1 (
+  a INT,
+  b INT,
+  PRIMARY KEY (a),
+  KEY b (b)
+);
+INSERT INTO t1 VALUES (1, 1), (2, 1);
+
+CREATE TABLE t2 LIKE t1;
+INSERT INTO t2 SELECT * FROM t1;
+
+CREATE TABLE t3 LIKE t1;
+INSERT INTO t3 SELECT * FROM t1;
+
+--echo # Should not crash.
+--echo # Should have 1 impossible where and 2 dependent subqs.
+EXPLAIN
+SELECT
+  (SELECT 1 FROM t1,t2 WHERE t2.b > t3.b)
+FROM t3 WHERE 1 = 0 GROUP BY 1;
+
+--echo # should return 0 rows
+SELECT
+  (SELECT 1 FROM t1,t2 WHERE t2.b > t3.b)
+FROM t3 WHERE 1 = 0 GROUP BY 1;
+
+DROP TABLE t1,t2,t3;
 
 --echo End of 5.0 tests.
diff --git a/mysys/my_thr_init.c b/mysys/my_thr_init.c
index 2278c467f32..d8c7d85ff30 100644
--- a/mysys/my_thr_init.c
+++ b/mysys/my_thr_init.c
@@ -108,10 +108,11 @@ my_bool my_thread_global_init(void)
     pthread_attr_t  dummy_thread_attr;
 
     pthread_attr_init(&dummy_thread_attr);
-    pthread_attr_setdetachstate(&dummy_thread_attr, PTHREAD_CREATE_DETACHED);
+    pthread_attr_setdetachstate(&dummy_thread_attr, PTHREAD_CREATE_JOINABLE);
 
-    pthread_create(&dummy_thread,&dummy_thread_attr,
-                   nptl_pthread_exit_hack_handler, NULL);
+    if (pthread_create(&dummy_thread,&dummy_thread_attr,
+                       nptl_pthread_exit_hack_handler, NULL) == 0)
+      (void)pthread_join(dummy_thread, NULL);
   }
 #endif /* TARGET_OS_LINUX */
 
diff --git a/sql/field.cc b/sql/field.cc
index 9f46552d5bd..0df9b0fc2e4 100644
--- a/sql/field.cc
+++ b/sql/field.cc
@@ -8832,6 +8832,24 @@ bool Field::eq_def(Field *field)
 }
 
 
+/**
+  Compare the first t1::count type names.
+
+  @return TRUE if the type names of t1 match those of t2. FALSE otherwise.
+*/
+
+static bool compare_type_names(CHARSET_INFO *charset, TYPELIB *t1, TYPELIB *t2)
+{
+  for (uint i= 0; i < t1->count; i++)
+    if (my_strnncoll(charset,
+                     (const uchar*) t1->type_names[i],
+                     t1->type_lengths[i],
+                     (const uchar*) t2->type_names[i],
+                     t2->type_lengths[i]))
+      return FALSE;
+  return TRUE;
+}
+
 /**
   @return
   returns 1 if the fields are equally defined
@@ -8839,32 +8857,57 @@ bool Field::eq_def(Field *field)
 
 bool Field_enum::eq_def(Field *field)
 {
+  TYPELIB *values;
+
   if (!Field::eq_def(field))
-    return 0;
-  return compare_enum_values(((Field_enum*) field)->typelib);
-}
+    return FALSE;
 
+  values= ((Field_enum*) field)->typelib;
 
-bool Field_enum::compare_enum_values(TYPELIB *values)
-{
+  /* Definition must be strictly equal. */
   if (typelib->count != values->count)
     return FALSE;
-  for (uint i= 0; i < typelib->count; i++)
-    if (my_strnncoll(field_charset,
-                     (const uchar*) typelib->type_names[i],
-                     typelib->type_lengths[i],
-                     (const uchar*) values->type_names[i],
-                     values->type_lengths[i]))
-      return FALSE;
-  return TRUE;
+
+  return compare_type_names(field_charset, typelib, values);
 }
 
 
+/**
+  Check whether two fields can be considered 'equal' for table
+  alteration purposes. Fields are equal if they retain the same
+  pack length and if new members are added to the end of the list.
+
+  @return IS_EQUAL_YES if fields are compatible.
+          IS_EQUAL_NO otherwise.
+*/
+
 uint Field_enum::is_equal(Create_field *new_field)
 {
-  if (!Field_str::is_equal(new_field))
-    return 0;
-  return compare_enum_values(new_field->interval);
+  TYPELIB *values= new_field->interval;
+
+  /*
+    The fields are compatible if they have the same flags,
+    type, charset and have the same underlying length.
+  */
+  if (compare_str_field_flags(new_field, flags) ||
+      new_field->sql_type != real_type() ||
+      new_field->charset != field_charset ||
+      new_field->pack_length != pack_length())
+    return IS_EQUAL_NO;
+
+  /*
+    Changing the definition of an ENUM or SET column by adding a new
+    enumeration or set members to the end of the list of valid member
+    values only alters table metadata and not table data.
+  */
+  if (typelib->count > values->count)
+    return IS_EQUAL_NO;
+
+  /* Check whether there are modification before the end. */
+  if (! compare_type_names(field_charset, typelib, new_field->interval))
+    return IS_EQUAL_NO;
+
+  return IS_EQUAL_YES;
 }
 
 
diff --git a/sql/field.h b/sql/field.h
index a9299256f88..7a9b69eff40 100644
--- a/sql/field.h
+++ b/sql/field.h
@@ -472,6 +472,13 @@ public:
   /* maximum possible display length */
   virtual uint32 max_display_length()= 0;
 
+  /**
+    Whether a field being created is compatible with a existing one.
+
+    Used by the ALTER TABLE code to evaluate whether the new definition
+    of a table is compatible with the old definition so that it can
+    determine if data needs to be copied over (table data change).
+  */
   virtual uint is_equal(Create_field *new_field);
   /* convert decimal to longlong with overflow check */
   longlong convert_decimal2longlong(const my_decimal *val, bool unsigned_flag,
@@ -1862,7 +1869,6 @@ public:
   CHARSET_INFO *sort_charset(void) const { return &my_charset_bin; }
 private:
   int do_save_field_metadata(uchar *first_byte);
-  bool compare_enum_values(TYPELIB *values);
   uint is_equal(Create_field *new_field);
 };
 
diff --git a/sql/item.cc b/sql/item.cc
index 26df3a45971..86e4551e55b 100644
--- a/sql/item.cc
+++ b/sql/item.cc
@@ -6331,9 +6331,26 @@ bool Item_direct_view_ref::fix_fields(THD *thd, Item **reference)
   /* view fild reference must be defined */
   DBUG_ASSERT(*ref);
   /* (*ref)->check_cols() will be made in Item_direct_ref::fix_fields */
-  if (!(*ref)->fixed &&
-      ((*ref)->fix_fields(thd, ref)))
+  if ((*ref)->fixed)
+  {
+    Item *ref_item= (*ref)->real_item();
+    if (ref_item->type() == Item::FIELD_ITEM)
+    {
+      /*
+        In some cases we need to update table read set(see bug#47150).
+        If ref item is FIELD_ITEM and fixed then field and table
+        have proper values. So we can use them for update.
+      */
+      Field *fld= ((Item_field*) ref_item)->field;
+      DBUG_ASSERT(fld && fld->table);
+      if (thd->mark_used_columns == MARK_COLUMNS_READ)
+        bitmap_set_bit(fld->table->read_set, fld->field_index);
+    }
+  }
+  else if (!(*ref)->fixed &&
+           ((*ref)->fix_fields(thd, ref)))
     return TRUE;
+
   return Item_direct_ref::fix_fields(thd, reference);
 }
 
diff --git a/sql/mysql_priv.h b/sql/mysql_priv.h
index 381a0313add..6fde16d3049 100644
--- a/sql/mysql_priv.h
+++ b/sql/mysql_priv.h
@@ -2277,10 +2277,9 @@ enum enum_explain_filename_mode
 {
   EXPLAIN_ALL_VERBOSE= 0,
   EXPLAIN_PARTITIONS_VERBOSE,
-  EXPLAIN_PARTITIONS_AS_COMMENT,
-  EXPLAIN_PARTITIONS_AS_COMMENT_NO_QUOTING
+  EXPLAIN_PARTITIONS_AS_COMMENT
 };
-uint explain_filename(const char *from, char *to, uint to_length,
+uint explain_filename(THD* thd, const char *from, char *to, uint to_length,
                       enum_explain_filename_mode explain_mode);
 uint filename_to_tablename(const char *from, char *to, uint to_length);
 uint tablename_to_filename(const char *from, char *to, uint to_length);
diff --git a/sql/sql_class.h b/sql/sql_class.h
index c38eb17f191..b0128244030 100644
--- a/sql/sql_class.h
+++ b/sql/sql_class.h
@@ -2907,7 +2907,8 @@ public:
   bool send_data(List<Item> &items);
   bool initialize_tables (JOIN *join);
   void send_error(uint errcode,const char *err);
-  int  do_deletes();
+  int do_deletes();
+  int do_table_deletes(TABLE *table, bool ignore);
   bool send_eof();
   virtual void abort();
 };
diff --git a/sql/sql_delete.cc b/sql/sql_delete.cc
index d2f90fa9288..a81a5f4641f 100644
--- a/sql/sql_delete.cc
+++ b/sql/sql_delete.cc
@@ -860,22 +860,19 @@ void multi_delete::abort()
 
 
 
-/*
+/**
   Do delete from other tables.
-  Returns values:
-	0 ok
-	1 error
+
+  @retval 0 ok
+  @retval 1 error
+
+  @todo Is there any reason not use the normal nested-loops join? If not, and
+  there is no documentation supporting it, this method and callee should be
+  removed and there should be hooks within normal execution.
 */
 
 int multi_delete::do_deletes()
 {
-  int local_error= 0, counter= 0, tmp_error;
-  bool will_batch;
-  /*
-    If the IGNORE option is used all non fatal errors will be translated
-    to warnings and we should not break the row-by-row iteration
-  */
-  bool ignore= thd->lex->current_select->no_error;
   DBUG_ENTER("do_deletes");
   DBUG_ASSERT(do_delete);
 
@@ -886,79 +883,108 @@ int multi_delete::do_deletes()
   table_being_deleted= (delete_while_scanning ? delete_tables->next_local :
                         delete_tables);
  
-  for (; table_being_deleted;
+  for (uint counter= 0; table_being_deleted;
        table_being_deleted= table_being_deleted->next_local, counter++)
   { 
-    ha_rows last_deleted= deleted;
     TABLE *table = table_being_deleted->table;
     if (tempfiles[counter]->get(table))
+      DBUG_RETURN(1);
+
+    int local_error= 
+      do_table_deletes(table, thd->lex->current_select->no_error);
+
+    if (thd->killed && !local_error)
+      DBUG_RETURN(1);
+
+    if (local_error == -1)				// End of file
+      local_error = 0;
+
+    if (local_error)
+      DBUG_RETURN(local_error);
+  }
+  DBUG_RETURN(0);
+}
+
+
+/**
+   Implements the inner loop of nested-loops join within multi-DELETE
+   execution.
+
+   @param table The table from which to delete.
+
+   @param ignore If used, all non fatal errors will be translated
+   to warnings and we should not break the row-by-row iteration.
+
+   @return Status code
+
+   @retval  0 All ok.
+   @retval  1 Triggers or handler reported error.
+   @retval -1 End of file from handler.
+*/
+int multi_delete::do_table_deletes(TABLE *table, bool ignore)
+{
+  int local_error= 0;
+  READ_RECORD info;
+  ha_rows last_deleted= deleted;
+  DBUG_ENTER("do_deletes_for_table");
+  init_read_record(&info, thd, table, NULL, 0, 1, FALSE);
+  /*
+    Ignore any rows not found in reference tables as they may already have
+    been deleted by foreign key handling
+  */
+  info.ignore_not_found_rows= 1;
+  bool will_batch= !table->file->start_bulk_delete();
+  while (!(local_error= info.read_record(&info)) && !thd->killed)
+  {
+    if (table->triggers &&
+        table->triggers->process_triggers(thd, TRG_EVENT_DELETE,
+                                          TRG_ACTION_BEFORE, FALSE))
     {
-      local_error=1;
+      local_error= 1;
       break;
     }
-
-    READ_RECORD	info;
-    init_read_record(&info, thd, table, NULL, 0, 1, FALSE);
-    /*
-      Ignore any rows not found in reference tables as they may already have
-      been deleted by foreign key handling
-    */
-    info.ignore_not_found_rows= 1;
-    will_batch= !table->file->start_bulk_delete();
-    while (!(local_error=info.read_record(&info)) && !thd->killed)
+      
+    local_error= table->file->ha_delete_row(table->record[0]);
+    if (local_error && !ignore)
     {
+      table->file->print_error(local_error, MYF(0));
+      break;
+    }
+      
+    /*
+      Increase the reported number of deleted rows only if no error occurred
+      during ha_delete_row.
+      Also, don't execute the AFTER trigger if the row operation failed.
+    */
+    if (!local_error)
+    {
+      deleted++;
       if (table->triggers &&
           table->triggers->process_triggers(thd, TRG_EVENT_DELETE,
-                                            TRG_ACTION_BEFORE, FALSE))
+                                            TRG_ACTION_AFTER, FALSE))
       {
         local_error= 1;
         break;
       }
-
-      local_error= table->file->ha_delete_row(table->record[0]);
-      if (local_error && !ignore)
-      {
-        table->file->print_error(local_error,MYF(0));
-        break;
-      }
-
-      /*
-        Increase the reported number of deleted rows only if no error occurred
-        during ha_delete_row.
-        Also, don't execute the AFTER trigger if the row operation failed.
-      */
-      if (!local_error)
-      {
-        deleted++;
-        if (table->triggers &&
-            table->triggers->process_triggers(thd, TRG_EVENT_DELETE,
-                                              TRG_ACTION_AFTER, FALSE))
-        {
-          local_error= 1;
-          break;
-        }
-      }
     }
-    if (will_batch && (tmp_error= table->file->end_bulk_delete()))
-    {
-      if (!local_error)
-      {
-        local_error= tmp_error;
-        table->file->print_error(local_error,MYF(0));
-      }
-    }
-    if (last_deleted != deleted && !table->file->has_transactions())
-      thd->transaction.stmt.modified_non_trans_table= TRUE;
-    end_read_record(&info);
-    if (thd->killed && !local_error)
-      local_error= 1;
-    if (local_error == -1)				// End of file
-      local_error = 0;
   }
+  if (will_batch)
+  {
+    int tmp_error= table->file->end_bulk_delete();
+    if (tmp_error && !local_error)
+    {
+      local_error= tmp_error;
+      table->file->print_error(local_error, MYF(0));
+    }
+  }
+  if (last_deleted != deleted && !table->file->has_transactions())
+    thd->transaction.stmt.modified_non_trans_table= TRUE;
+
+  end_read_record(&info);
+
   DBUG_RETURN(local_error);
 }
 
-
 /*
   Send ok to the client
 
diff --git a/sql/sql_select.cc b/sql/sql_select.cc
index 1ff068c8881..3f1432914a0 100644
--- a/sql/sql_select.cc
+++ b/sql/sql_select.cc
@@ -3308,12 +3308,12 @@ add_key_equal_fields(KEY_FIELD **key_fields, uint and_level,
      @retval FALSE  it's something else
 */
 
-inline static bool
+static bool
 is_local_field (Item *field)
 {
-  field= field->real_item();
-  return field->type() == Item::FIELD_ITEM && 
-    !((Item_field *)field)->depended_from;
+  return field->real_item()->type() == Item::FIELD_ITEM
+    && !(field->used_tables() & OUTER_REF_TABLE_BIT)
+    && !((Item_field *)field->real_item())->depended_from;
 }
 
 
diff --git a/sql/sql_table.cc b/sql/sql_table.cc
index 6dba2f02071..1d147c54059 100644
--- a/sql/sql_table.cc
+++ b/sql/sql_table.cc
@@ -70,15 +70,21 @@ static void wait_for_kill_signal(THD *thd)
 
 /**
   @brief Helper function for explain_filename
+  @param thd          Thread handle
+  @param to_p         Explained name in system_charset_info
+  @param end_p        End of the to_p buffer
+  @param name         Name to be converted
+  @param name_len     Length of the name, in bytes
 */
-static char* add_identifier(char *to_p, const char * end_p,
-                           const char* name, uint name_len, bool add_quotes)
+static char* add_identifier(THD* thd, char *to_p, const char * end_p,
+                            const char* name, uint name_len)
 {
   uint res;
   uint errors;
   const char *conv_name;
   char tmp_name[FN_REFLEN];
   char conv_string[FN_REFLEN];
+  int quote;
 
   DBUG_ENTER("add_identifier");
   if (!name[name_len])
@@ -102,19 +108,21 @@ static char* add_identifier(char *to_p, const char * end_p,
     conv_name= conv_string;
   }
 
-  if (add_quotes && (end_p - to_p > 2))
+  quote = thd ? get_quote_char_for_identifier(thd, conv_name, res - 1) : '"';
+
+  if (quote != EOF && (end_p - to_p > 2))
   {
-    *(to_p++)= '`';
+    *(to_p++)= (char) quote;
     while (*conv_name && (end_p - to_p - 1) > 0)
     {
       uint length= my_mbcharlen(system_charset_info, *conv_name);
       if (!length)
         length= 1;
-      if (length == 1 && *conv_name == '`')
+      if (length == 1 && *conv_name == (char) quote)
       { 
         if ((end_p - to_p) < 3)
           break;
-        *(to_p++)= '`';
+        *(to_p++)= (char) quote;
         *(to_p++)= *(conv_name++);
       }
       else if (((long) length) < (end_p - to_p))
@@ -125,7 +133,11 @@ static char* add_identifier(char *to_p, const char * end_p,
       else
         break;                               /* string already filled */
     }
-    to_p= strnmov(to_p, "`", end_p - to_p);
+    if (end_p > to_p) {
+      *(to_p++)= (char) quote;
+      if (end_p > to_p)
+	*to_p= 0; /* terminate by NUL, but do not include it in the count */
+    }
   }
   else
     to_p= strnmov(to_p, conv_name, end_p - to_p);
@@ -145,6 +157,7 @@ static char* add_identifier(char *to_p, const char * end_p,
   diagnostic, error etc. when it would be useful to know what a particular
   file [and directory] means. Such as SHOW ENGINE STATUS, error messages etc.
 
+   @param      thd          Thread handle
    @param      from         Path name in my_charset_filename
                             Null terminated in my_charset_filename, normalized
                             to use '/' as directory separation character.
@@ -161,13 +174,12 @@ static char* add_identifier(char *to_p, const char * end_p,
                             [,[ Temporary| Renamed] Partition `p`
                             [, Subpartition `sp`]] *|
                             (| is really a /, and it is all in one line)
-                            EXPLAIN_PARTITIONS_AS_COMMENT_NO_QUOTING ->
-                            same as above but no quotes are added.
 
    @retval     Length of returned string
 */
 
-uint explain_filename(const char *from,
+uint explain_filename(THD* thd,
+		      const char *from,
                       char *to,
                       uint to_length,
                       enum_explain_filename_mode explain_mode)
@@ -281,14 +293,12 @@ uint explain_filename(const char *from,
     {
       to_p= strnmov(to_p, ER(ER_DATABASE_NAME), end_p - to_p);
       *(to_p++)= ' ';
-      to_p= add_identifier(to_p, end_p, db_name, db_name_len, 1);
+      to_p= add_identifier(thd, to_p, end_p, db_name, db_name_len);
       to_p= strnmov(to_p, ", ", end_p - to_p);
     }
     else
     {
-      to_p= add_identifier(to_p, end_p, db_name, db_name_len,
-                           (explain_mode !=
-                            EXPLAIN_PARTITIONS_AS_COMMENT_NO_QUOTING));
+      to_p= add_identifier(thd, to_p, end_p, db_name, db_name_len);
       to_p= strnmov(to_p, ".", end_p - to_p);
     }
   }
@@ -296,16 +306,13 @@ uint explain_filename(const char *from,
   {
     to_p= strnmov(to_p, ER(ER_TABLE_NAME), end_p - to_p);
     *(to_p++)= ' ';
-    to_p= add_identifier(to_p, end_p, table_name, table_name_len, 1);
+    to_p= add_identifier(thd, to_p, end_p, table_name, table_name_len);
   }
   else
-    to_p= add_identifier(to_p, end_p, table_name, table_name_len,
-                         (explain_mode !=
-                          EXPLAIN_PARTITIONS_AS_COMMENT_NO_QUOTING));
+    to_p= add_identifier(thd, to_p, end_p, table_name, table_name_len);
   if (part_name)
   {
-    if (explain_mode == EXPLAIN_PARTITIONS_AS_COMMENT ||
-        explain_mode == EXPLAIN_PARTITIONS_AS_COMMENT_NO_QUOTING)
+    if (explain_mode == EXPLAIN_PARTITIONS_AS_COMMENT)
       to_p= strnmov(to_p, " /* ", end_p - to_p);
     else if (explain_mode == EXPLAIN_PARTITIONS_VERBOSE)
       to_p= strnmov(to_p, " ", end_p - to_p);
@@ -321,20 +328,15 @@ uint explain_filename(const char *from,
     }
     to_p= strnmov(to_p, ER(ER_PARTITION_NAME), end_p - to_p);
     *(to_p++)= ' ';
-    to_p= add_identifier(to_p, end_p, part_name, part_name_len,
-                         (explain_mode !=
-                          EXPLAIN_PARTITIONS_AS_COMMENT_NO_QUOTING));
+    to_p= add_identifier(thd, to_p, end_p, part_name, part_name_len);
     if (subpart_name)
     {
       to_p= strnmov(to_p, ", ", end_p - to_p);
       to_p= strnmov(to_p, ER(ER_SUBPARTITION_NAME), end_p - to_p);
       *(to_p++)= ' ';
-      to_p= add_identifier(to_p, end_p, subpart_name, subpart_name_len,
-                           (explain_mode !=
-                            EXPLAIN_PARTITIONS_AS_COMMENT_NO_QUOTING));
+      to_p= add_identifier(thd, to_p, end_p, subpart_name, subpart_name_len);
     }
-    if (explain_mode == EXPLAIN_PARTITIONS_AS_COMMENT ||
-        explain_mode == EXPLAIN_PARTITIONS_AS_COMMENT_NO_QUOTING)
+    if (explain_mode == EXPLAIN_PARTITIONS_AS_COMMENT)
       to_p= strnmov(to_p, " */", end_p - to_p);
   }
   DBUG_PRINT("exit", ("to '%s'", to));
diff --git a/storage/myisam/mi_check.c b/storage/myisam/mi_check.c
index 15eb28e6183..1c33ffa90f5 100644
--- a/storage/myisam/mi_check.c
+++ b/storage/myisam/mi_check.c
@@ -801,7 +801,7 @@ static int chk_index(MI_CHECK *param, MI_INFO *info, MI_KEYDEF *keyinfo,
     {
       DBUG_DUMP("old",(uchar*) info->lastkey, info->lastkey_length);
       DBUG_DUMP("new",(uchar*) key, key_length);
-      DBUG_DUMP("new_in_page",(char*) old_keypos,(uint) (keypos-old_keypos));
+      DBUG_DUMP("new_in_page",(uchar*) old_keypos,(uint) (keypos-old_keypos));
 
       if (comp_flag & SEARCH_FIND && flag == 0)
 	mi_check_print_error(param,"Found duplicated key at page %s",llstr(page,llbuff));
@@ -871,7 +871,7 @@ static int chk_index(MI_CHECK *param, MI_INFO *info, MI_KEYDEF *keyinfo,
 			 llstr(page,llbuff),llstr(record,llbuff2),
 			 llstr(info->state->data_file_length,llbuff3)));
       DBUG_DUMP("key",(uchar*) key,key_length);
-      DBUG_DUMP("new_in_page",(char*) old_keypos,(uint) (keypos-old_keypos));
+      DBUG_DUMP("new_in_page",(uchar*) old_keypos,(uint) (keypos-old_keypos));
       goto err;
     }
     param->record_checksum+=(ha_checksum) record;
@@ -1545,6 +1545,8 @@ int mi_repair(MI_CHECK *param, register MI_INFO *info,
   if (info->s->options & (HA_OPTION_CHECKSUM | HA_OPTION_COMPRESS_RECORD))
     param->testflag|=T_CALC_CHECKSUM;
 
+  DBUG_ASSERT(param->use_buffers < SIZE_T_MAX);
+
   if (!param->using_global_keycache)
     VOID(init_key_cache(dflt_key_cache, param->key_cache_block_size,
                         (size_t) param->use_buffers, 0, 0));
diff --git a/support-files/binary-configure.sh b/support-files/binary-configure.sh
index 884a8363e22..5e6d62f69a0 100644
--- a/support-files/binary-configure.sh
+++ b/support-files/binary-configure.sh
@@ -1,4 +1,28 @@
 #!/bin/sh
+
+SCRIPT_NAME="`basename $0`"
+
+usage()
+{
+  echo "Usage: ${SCRIPT_NAME} [--help|-h]"
+  echo ""
+  echo "This script creates the MySQL system tables and starts the server."
+}
+
+for arg do
+  case "$arg" in
+    --help|-h)
+      usage
+      exit 0
+      ;;
+    *)
+      echo "${SCRIPT_NAME}: unknown option $arg"
+      usage
+      exit 2
+      ;;
+  esac
+done
+
 if test ! -x  ./scripts/mysql_install_db
 then
   echo "I didn't find the script './scripts/mysql_install_db'."