Comment 2 for bug 1462490

Confirmed as a feature request.

nilnandan@desktop:~$ mysql -uroot -p
Enter password:
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Your MySQL connection id is 45
Server version: 5.6.24-72.2-log Percona Server (GPL), Release 72.2, Revision 8d0f85b

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mysql> select @@global.sql_mode;
+------------------------+
| @@global.sql_mode |
+------------------------+
| NO_ENGINE_SUBSTITUTION |
+------------------------+
1 row in set (0.00 sec)

mysql>
mysql> CREATE TABLE nil_test (id int, name varchar(10), bdata timestamp NOT NULL ON UPDATE CURRENT_TIMESTAMP);
Query OK, 0 rows affected (0.01 sec)

mysql> SET GLOBAL sql_mode = "STRICT_TRANS_TABLES,STRICT_ALL_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,TRADITIONAL,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION";
Query OK, 0 rows affected, 3 warnings (0.00 sec)

mysql> select @@global.sql_mode;
+------------------------------------------------------------------------------------------------------------------------------------------------------+
| @@global.sql_mode |
+------------------------------------------------------------------------------------------------------------------------------------------------------+
| STRICT_TRANS_TABLES,STRICT_ALL_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,TRADITIONAL,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION |
+------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)

mysql> show create table nil_test \G
*************************** 1. row ***************************
       Table: nil_test
Create Table: CREATE TABLE `nil_test` (
  `id` int(11) DEFAULT NULL,
  `name` varchar(10) DEFAULT NULL,
  `bdata` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00' ON UPDATE CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=latin1
1 row in set (0.00 sec)

mysql> ALTER TABLE nil_test ADD COLUMN phone int;
ERROR 1067 (42000): Invalid default value for 'bdata'
mysql>
mysql> quit
Bye
nilnandan@desktop:~$ pt-online-schema-change --alter "ADD COLUMN c1 INT" D=test,t=nil_test --execute
No slaves found. See --recursion-method if host desktop has slaves.
Not checking slave lag because no slaves were found and --check-slave-lag was not specified.
Operation, tries, wait:
  copy_rows, 10, 0.25
  create_triggers, 10, 1
  drop_triggers, 10, 1
  swap_tables, 10, 1
  update_foreign_keys, 10, 1
Altering `test`.`nil_test`...
Creating new table...
`test`.`nil_test` was not altered.
Killed
nilnandan@desktop:~$