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# v4.0 Alpha 1 (unreleased)
2016-03-26 13:29:44 +01:00
## Bugfixes
* [CORE-5141 ](http://tracker.firebirdsql.org/browse/CORE-5141 ): Field definition allows several NOT NULL clauses
2016-03-23 17:53:35 +01:00
Contributor(s): Dimitry Sibiryakov
2016-03-26 13:29:44 +01:00
* [CORE-4985 ](http://tracker.firebirdsql.org/browse/CORE-4985 ): Non-privileged user can implicitly count records in a restricted table
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Contributor(s): Dmitry Yemanov
2016-03-26 13:29:44 +01:00
* [CORE-4701 ](http://tracker.firebirdsql.org/browse/CORE-4701 ): Index and blob garbage collection don't take into accout data in undo log
2016-03-23 17:53:35 +01:00
Contributor(s): Dimitry Sibiryakov
2016-03-26 13:29:44 +01:00
* [CORE-4424 ](http://tracker.firebirdsql.org/browse/CORE-4424 ): Rollback to wrong savepoint if several exception handlers on the same level are executed
2016-03-23 17:53:35 +01:00
Contributor(s): Dimitry Sibiryakov
2016-03-26 13:29:44 +01:00
## Improvements
* [CORE-5119 ](http://tracker.firebirdsql.org/browse/CORE-5119 ): Support autocommit mode in SET TRANSACTION statement
2016-03-23 17:53:35 +01:00
Contributor(s): Dmitry Yemanov