diff --git a/mysql-test/r/grant.result b/mysql-test/r/grant.result
index 10363e552b7..d56bb62300b 100644
--- a/mysql-test/r/grant.result
+++ b/mysql-test/r/grant.result
@@ -923,7 +923,7 @@ ERROR 42000: SELECT command denied to user 'mysqltest_1'@'localhost' for table '
 SHOW CREATE TABLE mysqltest2.t_nn;
 Table	Create Table
 t_nn	CREATE TABLE `t_nn` (
-  `c1` int(11) default NULL
+  `c1` int(11) DEFAULT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SHOW CREATE VIEW  mysqltest2.t_nn;
 ERROR HY000: 'mysqltest2.t_nn' is not VIEW
@@ -942,7 +942,7 @@ v_nn	CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER
 SHOW CREATE TABLE mysqltest2.t_nn;
 Table	Create Table
 t_nn	CREATE TABLE `t_nn` (
-  `c1` int(11) default NULL
+  `c1` int(11) DEFAULT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 SHOW CREATE VIEW mysqltest2.t_nn;
 ERROR HY000: 'mysqltest2.t_nn' is not VIEW
@@ -960,6 +960,72 @@ DROP USER 'mysqltest_1'@'localhost';
 use test;
 create user mysqltest1_thisisreallytoolong;
 ERROR HY000: String 'mysqltest1_thisisreallytoolong' is too long for user name (should be no longer than 16)
+CREATE DATABASE mysqltest1;
+CREATE TABLE mysqltest1.t1 (
+int_field INTEGER UNSIGNED NOT NULL,
+char_field CHAR(10),
+INDEX(`int_field`)
+);
+CREATE TABLE mysqltest1.t2 (int_field INT);
+"Now check that we require equivalent grants for "
+"RENAME TABLE and ALTER TABLE"
+CREATE USER mysqltest_1@localhost;
+GRANT SELECT ON mysqltest1.t1 TO mysqltest_1@localhost;
+SELECT USER();
+USER()
+mysqltest_1@localhost
+SHOW GRANTS;
+Grants for mysqltest_1@localhost
+GRANT USAGE ON *.* TO 'mysqltest_1'@'localhost'
+GRANT SELECT ON `mysqltest1`.`t1` TO 'mysqltest_1'@'localhost'
+RENAME TABLE t1 TO t2;
+ERROR 42000: DROP,ALTER command denied to user 'mysqltest_1'@'localhost' for table 't1'
+ALTER TABLE t1 RENAME TO t2;
+ERROR 42000: DROP,ALTER command denied to user 'mysqltest_1'@'localhost' for table 't1'
+GRANT DROP ON mysqltest1.t1 TO mysqltest_1@localhost;
+RENAME TABLE t1 TO t2;
+ERROR 42000: ALTER command denied to user 'mysqltest_1'@'localhost' for table 't1'
+ALTER TABLE t1 RENAME TO t2;
+ERROR 42000: ALTER command denied to user 'mysqltest_1'@'localhost' for table 't1'
+GRANT ALTER ON mysqltest1.t1 TO mysqltest_1@localhost;
+SHOW GRANTS;
+Grants for mysqltest_1@localhost
+GRANT USAGE ON *.* TO 'mysqltest_1'@'localhost'
+GRANT SELECT, DROP, ALTER ON `mysqltest1`.`t1` TO 'mysqltest_1'@'localhost'
+RENAME TABLE t1 TO t2;
+ERROR 42000: INSERT,CREATE command denied to user 'mysqltest_1'@'localhost' for table 't2'
+ALTER TABLE t1 RENAME TO t2;
+ERROR 42000: INSERT,CREATE command denied to user 'mysqltest_1'@'localhost' for table 't2'
+GRANT INSERT, CREATE ON mysqltest1.t1 TO mysqltest_1@localhost;
+SHOW GRANTS;
+Grants for mysqltest_1@localhost
+GRANT USAGE ON *.* TO 'mysqltest_1'@'localhost'
+GRANT SELECT, INSERT, CREATE, DROP, ALTER ON `mysqltest1`.`t1` TO 'mysqltest_1'@'localhost'
+GRANT INSERT, SELECT, CREATE, ALTER, DROP ON mysqltest1.t2 TO mysqltest_1@localhost;
+DROP TABLE mysqltest1.t2;
+SHOW GRANTS;
+Grants for mysqltest_1@localhost
+GRANT USAGE ON *.* TO 'mysqltest_1'@'localhost'
+GRANT SELECT, INSERT, CREATE, DROP, ALTER ON `mysqltest1`.`t2` TO 'mysqltest_1'@'localhost'
+GRANT SELECT, INSERT, CREATE, DROP, ALTER ON `mysqltest1`.`t1` TO 'mysqltest_1'@'localhost'
+RENAME TABLE t1 TO t2;
+RENAME TABLE t2 TO t1;
+ALTER TABLE t1 RENAME TO t2;
+ALTER TABLE t2 RENAME TO t1;
+REVOKE DROP, INSERT ON mysqltest1.t1 FROM mysqltest_1@localhost;
+REVOKE DROP, INSERT ON mysqltest1.t2 FROM mysqltest_1@localhost;
+SHOW GRANTS;
+Grants for mysqltest_1@localhost
+GRANT USAGE ON *.* TO 'mysqltest_1'@'localhost'
+GRANT SELECT, CREATE, ALTER ON `mysqltest1`.`t2` TO 'mysqltest_1'@'localhost'
+GRANT SELECT, CREATE, ALTER ON `mysqltest1`.`t1` TO 'mysqltest_1'@'localhost'
+RENAME TABLE t1 TO t2;
+ERROR 42000: DROP command denied to user 'mysqltest_1'@'localhost' for table 't1'
+ALTER TABLE t1 RENAME TO t2;
+ERROR 42000: DROP command denied to user 'mysqltest_1'@'localhost' for table 't1'
+DROP USER mysqltest_1@localhost;
+DROP DATABASE mysqltest1;
+USE test;
 GRANT CREATE ON mysqltest.* TO 1234567890abcdefGHIKL@localhost;
 ERROR HY000: String '1234567890abcdefGHIKL' is too long for user name (should be no longer than 16)
 GRANT CREATE ON mysqltest.* TO some_user_name@1234567890abcdefghij1234567890abcdefghij1234567890abcdefghijQWERTY;
@@ -984,6 +1050,26 @@ REVOKE EXECUTE ON PROCEDURE p1 FROM 1234567890abcdefGHIKL@localhost;
 ERROR HY000: String '1234567890abcdefGHIKL' is too long for user name (should be no longer than 16)
 REVOKE EXECUTE ON PROCEDURE t1 FROM some_user_name@1234567890abcdefghij1234567890abcdefghij1234567890abcdefghijQWERTY;
 ERROR HY000: String '1234567890abcdefghij1234567890abcdefghij1234567890abcdefghijQWERTY' is too long for host name (should be no longer than 60)
+CREATE USER bug23556@localhost;
+CREATE DATABASE bug23556;
+GRANT SELECT ON bug23556.* TO bug23556@localhost;
+USE bug23556;
+CREATE TABLE t1 (a INT PRIMARY KEY);
+INSERT INTO t1 VALUES (1),(2),(3),(4),(5);
+GRANT DELETE ON t1 TO bug23556@localhost;
+USE bug23556;
+TRUNCATE t1;
+ERROR 42000: DROP command denied to user 'bug23556'@'localhost' for table 't1'
+USE bug23556;
+REVOKE DELETE ON t1 FROM bug23556@localhost;
+GRANT DROP ON t1 TO bug23556@localhost;
+USE bug23556;
+TRUNCATE t1;
+USE bug23556;
+DROP TABLE t1;
+USE test;
+DROP DATABASE bug23556;
+DROP USER bug23556@localhost;
 GRANT PROCESS ON * TO user@localhost;
 ERROR 3D000: No database selected
 DROP DATABASE IF EXISTS mysqltest1;