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v4.0-release
firebird-mirror/CHANGELOG.md
Dmitry Yemanov 1c5755a652 Document v4.0.5 changes
2024-07-31 17:00:01 +03:00

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# v4.0.5
## Improvements
* [#8181](https://github.com/FirebirdSQL/firebird/pull/8181): Ensure the standalone CS listener on Linux uses the _SO_REUSEADDR_ socket option
Contributor(s): Dmitry Yemanov
* [#8165](https://github.com/FirebirdSQL/firebird/pull/8165): Added shutdown handler for _Classic Server_
Contributor(s): Alexander Zhdanov
* [#8104](https://github.com/FirebirdSQL/firebird/issues/8104): More efficient evaluation of expressions like `RDB$DB_KEY <= ?` after mass delete
Contributor(s): Vlad Khorsun
* [#8066](https://github.com/FirebirdSQL/firebird/issues/8066): Make protocol schemes case-insensitive
Contributor(s): Vlad Khorsun
* [#8042](https://github.com/FirebirdSQL/firebird/issues/8042): Improve conflict resolution on replica when table have both primary and unique keys
Contributor(s): Vlad Khorsun
* [#8030](https://github.com/FirebirdSQL/firebird/issues/8030): Better cardinality estimation when empty data pages exist
Contributor(s): Vlad Khorsun
* [#8010](https://github.com/FirebirdSQL/firebird/issues/8010): Remove `gfix -cache` option
Contributor(s): Vlad Khorsun
* [#7978](https://github.com/FirebirdSQL/firebird/issues/7978): Update Windows distributions with _zlib_ version 1.3.1
Contributor(s): Vlad Khorsun
* [#7928](https://github.com/FirebirdSQL/firebird/issues/7928): Make `TempCacheLimit` setting to be per-database, (not per-attachment) for _SuperClassic_
Contributor(s): Vlad Khorsun
* [#7854](https://github.com/FirebirdSQL/firebird/issues/7854): Performance issue with time zones
Contributor(s): Adriano dos Santos Fernandes, Vlad Khorsun
## Bugfixes
* [#8189](https://github.com/FirebirdSQL/firebird/issues/8189): Slow connection times with a lot of simultaneous connections and active trace session present
Contributor(s): Alexander Peshkov, Vlad Khorsun
* [#8180](https://github.com/FirebirdSQL/firebird/issues/8180): Sometimes a system trace session is terminated spontaneously
Contributor(s): Artyom Abakumov
* [#8178](https://github.com/FirebirdSQL/firebird/pull/8178): Fix boolean conversion to string inside `DataTypeUtil::makeFromList()`
Contributor(s): Dmitry Yemanov
* [#8171](https://github.com/FirebirdSQL/firebird/issues/8171): Trace plugin unloaded if called method is not implemented
Contributor(s): Vlad Khorsun
* [#8156](https://github.com/FirebirdSQL/firebird/issues/8156): Can not specify concrete IPv6 address in ES/EDS connection string
Contributor(s): Vlad Khorsun
* [#8151](https://github.com/FirebirdSQL/firebird/issues/8151): Deadlock happens when run 'List Trace Sessions' service and there are many active trace sessions
Contributor(s): Vlad Khorsun
* [#8150](https://github.com/FirebirdSQL/firebird/issues/8150): Process could attach to the deleted instance of shared memory
Contributor(s): Alexander Peshkov, Vlad Khorsun
* [#8149](https://github.com/FirebirdSQL/firebird/issues/8149): The hung or crash could happen when connection fires _TRACE_EVENT_DETACH_ event and new trace session created concurrently
Contributor(s): Vlad Khorsun
* [#8138](https://github.com/FirebirdSQL/firebird/issues/8138): Bugcheck when replicator state is changed concurrently
Contributor(s): Vlad Khorsun
* [#8120](https://github.com/FirebirdSQL/firebird/issues/8120): `CAST` dies with numeric value is out of range error
Contributor(s): Vlad Khorsun
* [#8114](https://github.com/FirebirdSQL/firebird/issues/8114): Segfault in connections pool during server shutdown
Contributor(s): Vlad Khorsun
* [#8110](https://github.com/FirebirdSQL/firebird/issues/8110): Firebird crashes on Android API level 34
Contributor(s): Vlad Khorsun
* [#8108](https://github.com/FirebirdSQL/firebird/issues/8108): ICU 63.1 suppresses conversion errors
Contributor(s): Dmitry Kovalenko
* [#8101](https://github.com/FirebirdSQL/firebird/issues/8101): Firebird crashes if a plugin factory returns _nullptr_ and no error in status
Contributor(s): Vlad Khorsun, Dimitry Sibiryakov
* [#8089](https://github.com/FirebirdSQL/firebird/issues/8089): AV when attaching database while low of free memory
Contributor(s): Vlad Khorsun
* [#8085](https://github.com/FirebirdSQL/firebird/issues/8085): Memory leak when executing a lot of different queries and `StatementTimeout > 0`
Contributor(s): Vlad Khorsun
* [#8083](https://github.com/FirebirdSQL/firebird/issues/8083): AV when writting into internal trace log
Contributor(s): Vlad Khorsun
* [#8079](https://github.com/FirebirdSQL/firebird/issues/8079): Engine could crash when executing some trigger(s) while another attachment modifies them
Contributor(s): Vlad Khorsun
* [#8077](https://github.com/FirebirdSQL/firebird/issues/8077): Error "Too many recursion levels" does not stop execution of code that uses `ON DISCONNECT` trigger
Contributor(s): Alexander Peshkov, Vlad Khorsun
* [#8058](https://github.com/FirebirdSQL/firebird/issues/8058): Replicated DDL changes do not set the correct grantor
Contributor(s): Dmitry Yemanov
* [#8056](https://github.com/FirebirdSQL/firebird/issues/8056): Error "Too many temporary blobs" with blob_append when select a stored procedue using rows-clause
Contributor(s): Vlad Khorsun
* [#8040](https://github.com/FirebirdSQL/firebird/issues/8040): Bugcheck 183 (wrong record length) could happen on replica database after UK violation on insert
Contributor(s): Vlad Khorsun
* [#8039](https://github.com/FirebirdSQL/firebird/issues/8039): Segfault when opening damaged (last TIP is missing in `RDB$PAGES`, user's FW was OFF) database
Contributor(s): Alexander Peshkov
* [#8027](https://github.com/FirebirdSQL/firebird/issues/8027): Broken _gbak_ statistics
Contributor(s): Alexander Peshkov
* [#8011](https://github.com/FirebirdSQL/firebird/issues/8011): DECFLOAT error working with `INT128` in UDR
Contributor(s): Alexander Peshkov
* [#8006](https://github.com/FirebirdSQL/firebird/issues/8006): Int128 datatype not supported in FB_MESSAGE macro
Contributor(s): Alexander Peshkov
* [#8003](https://github.com/FirebirdSQL/firebird/issues/8003): _gbak_ v4 can't backup database in _ODS < 13_
Contributor(s): Vlad Khorsun
* [#7997](https://github.com/FirebirdSQL/firebird/issues/7997): Unexpected results when comparing integer with string containing value out of range of that integer datatype
Contributor(s): Alexander Peshkov
* [#7993](https://github.com/FirebirdSQL/firebird/issues/7993): Unexpected results when using `CASE WHEN` with `RIGHT JOIN`
Contributor(s): Dmitry Yemanov
* [#7985](https://github.com/FirebirdSQL/firebird/issues/7985): Hang in case of error when sweep thread is attaching to database (_Classic Server_)
Contributor(s): Alexander Peshkov
* [#7979](https://github.com/FirebirdSQL/firebird/issues/7979): Hang when database with disconnect trigger using `MON$` tables is shutting down
Contributor(s): Alexander Peshkov
* [#7969](https://github.com/FirebirdSQL/firebird/issues/7969): Characters are garbled when replicating fields with type `BLOB SUB_TYPE TEXT` if the character set of the connection and the field are different
Contributor(s): Dmitry Yemanov
* [#7950](https://github.com/FirebirdSQL/firebird/issues/7950): Unable to restore database when .fbk was created on host with other ICU
Contributor(s): Alexander Peshkov
* [#7927](https://github.com/FirebirdSQL/firebird/issues/7927): Some default values is set incorrectly for SC/CS architectures
Contributor(s): Vlad Khorsun
* [#7917](https://github.com/FirebirdSQL/firebird/issues/7917): Hang in case of error when sweep thread is attaching to database
Contributor(s): Alexander Peshkov
* [#7905](https://github.com/FirebirdSQL/firebird/issues/7905): Segfault during TPC initialization
Contributor(s): Alexander Peshkov
* [#7899](https://github.com/FirebirdSQL/firebird/issues/7899): Inconsistent state of master-detail occurs after RE-connect + 'SET AUTODDL OFF' + 'drop <FK>' which is ROLLED BACK
Contributor(s): Vlad Khorsun
* [#7896](https://github.com/FirebirdSQL/firebird/issues/7896): _replication.log_ remains empty (and without any error in firebird.log) until concurrent FB instance is running under different account and generates segments on its master. Significant delay required after stop concurrent FB it in order allow first one to write in its replication log.
Contributor(s): Vlad Khorsun
* [#7885](https://github.com/FirebirdSQL/firebird/issues/7885): Unstable error messages in services due to races related with service status vector
Contributor(s): Alexander Peshkov
* [#7873](https://github.com/FirebirdSQL/firebird/issues/7873): Wrong memory buffer alignment and I/O buffer size when working in direct I/O mode
Contributor(s): Vlad Khorsun
* [#7869](https://github.com/FirebirdSQL/firebird/issues/7869): _gbak_ can write uninitialized data into `RDB$RETURN_ARGUMENT` and `RDB$ARGUMENT_POSITION` fields
Contributor(s): Dmitry Kovalenko
* [#7867](https://github.com/FirebirdSQL/firebird/issues/7867): Error "wrong page type" during garbage collection on v4.0.4
Contributor(s): Ilya Eremin
* [#7860](https://github.com/FirebirdSQL/firebird/issues/7860): Crash potentially caused by `BETWEEN` operator
Contributor(s): Vlad Khorsun
* [#7851](https://github.com/FirebirdSQL/firebird/issues/7851): The skip of `att_functionarg_field_precision` does not check `RESTORE_format`
Contributor(s): Dmitry Kovalenko
* [#7846](https://github.com/FirebirdSQL/firebird/issues/7846): FB4 can't backup/restore `INT128`-array
Contributor(s): Dmitry Kovalenko
* [#7844](https://github.com/FirebirdSQL/firebird/issues/7844): Removing first column with `SET WIDTH` crashes _isql_
Contributor(s): Adriano dos Santos Fernandes
* [#7839](https://github.com/FirebirdSQL/firebird/issues/7839): Potential bug in `BETWEEN` operator
Contributor(s): Vlad Khorsun
* [#7831](https://github.com/FirebirdSQL/firebird/issues/7831): Incorrect type of UDF-argument with array
Contributor(s): Dmitry Kovalenko
* [#7827](https://github.com/FirebirdSQL/firebird/issues/7827): Problem using Python _firebird-driver_ with either Intel or M1 Mac builds with version 4.0.3 or 5.0+
Contributor(s): Adriano dos Santos Fernandes
* [#7809](https://github.com/FirebirdSQL/firebird/issues/7809): Crash "Fatal lock manager error: Process disappeared in LockManager::acquire_shmem"
Contributor(s): Alexander Peshkov
* [#7800](https://github.com/FirebirdSQL/firebird/issues/7800): Default publication status is not preserved after backup/restore
Contributor(s): Dmitry Yemanov
* [#7461](https://github.com/FirebirdSQL/firebird/issues/7461): Differences in field metadata descriptions between Firebird 2.5 and Firebird 4
Contributor(s): Dmitry Yemanov
# v4.0.4
## Improvements
* [#7818](https://github.com/FirebirdSQL/firebird/issues/7818): Extend `RDB$GET_CONTEXT('SYSTEM', '***')` with other info from `MON$ATTACHMENTS`
Contributor(s): Vlad Khorsun
* [#7755](https://github.com/FirebirdSQL/firebird/issues/7755): Update Windows distribution with new _zlib_ version 1.3 (released 2023-08-18)
Contributor(s): Vlad Khorsun
## Bugfixes
* [#7817](https://github.com/FirebirdSQL/firebird/issues/7817): Memory leak is possible for UDF array arguments
Contributor(s): Dmitry Yemanov
* [#7812](https://github.com/FirebirdSQL/firebird/issues/7812): Service backup does not work in multiple engines configuration
Contributor(s): Alexander Peshkov
* [#7779](https://github.com/FirebirdSQL/firebird/issues/7779): Firebird 4.0.3 is constantly crashing with the same symptoms (fbclient.dll)
Contributor(s): Vlad Khorsun
* [#7772](https://github.com/FirebirdSQL/firebird/issues/7772): Blob corruption in FB4.0.3 (embedded)
Contributor(s): Vlad Khorsun
* [#7770](https://github.com/FirebirdSQL/firebird/issues/7770): Restore takes 25% more time vs 4.0.0
Contributor(s): Vlad Khorsun
* [#7766](https://github.com/FirebirdSQL/firebird/issues/7766): Firebird 4 Windows Installer omits DLLs during custom installation mode
Contributor(s): Paul Reeves
* [#7762](https://github.com/FirebirdSQL/firebird/issues/7762): Crash on "Operating system call pthread_mutex_destroy failed. Error code 16" in log
Contributor(s): Alexander Peshkov
* [#7761](https://github.com/FirebirdSQL/firebird/issues/7761): Regression when displaying line number of errors in _ISQL_ scripts
Contributor(s): Adriano dos Santos Fernandes
* [#7759](https://github.com/FirebirdSQL/firebird/issues/7759): Routine calling overhead increased by factor 6 vs Firebird 4.0.0
Contributor(s): Adriano dos Santos Fernandes
* [#7747](https://github.com/FirebirdSQL/firebird/pull/7747): Fix an issue where the garbage collection in indexes and blobs is not performed in _VIO_backout_
Contributor(s): Ilya Eremin
* [#7745](https://github.com/FirebirdSQL/firebird/issues/7745): Error restoring database which has system domains in user table with BLOBs using embedded connection
Contributor(s): Alexander Peshkov
* [#7738](https://github.com/FirebirdSQL/firebird/issues/7738): Crash on multiple connections/disconnections
Contributor(s): Alexander Peshkov
* [#7737](https://github.com/FirebirdSQL/firebird/pull/7737): Fix cases where the precedence relationship between a record page and a blob page is not set
Contributor(s): Ilya Eremin
* [#7731](https://github.com/FirebirdSQL/firebird/issues/7731): Display length of `TIMESTAMP WITH TIME ZONE` is wrong in dialect 1
Contributor(s): Alexander Peshkov
* [#7730](https://github.com/FirebirdSQL/firebird/issues/7730): Server ignores the size of `VARCHAR` when performing `SET BIND ... TO VARCHAR(N)`
Contributor(s): Alexander Peshkov
* [#7729](https://github.com/FirebirdSQL/firebird/issues/7729): `SET BIND OF TS WITH TZ TO VARCHAR(128)` uses the date format of dialect 1
Contributor(s): Alexander Peshkov
* [#7727](https://github.com/FirebirdSQL/firebird/issues/7727): Index for integer column cannot be used when `INT128/DECFLOAT` value is being searched
Contributor(s): Dmitry Yemanov
* [#7723](https://github.com/FirebirdSQL/firebird/issues/7723): Wrong error message on login if the user doesn't exist and _WireCrypt_ is disabled
Contributor(s): Alexander Peshkov
* [#7713](https://github.com/FirebirdSQL/firebird/issues/7713): `FOR SELECT` statement can not see any changes made inside the `DO` block
Contributor(s): Vlad Khorsun
* [#7691](https://github.com/FirebirdSQL/firebird/issues/7691): `WITH CALLER PRIVILEGES` has no effect in triggers
Contributor(s): Alexander Peshkov
* [#7480](https://github.com/FirebirdSQL/firebird/issues/7480): Firebird server stops accepting new connections after some time
Contributor(s): Alexander Peshkov
# v4.0.3
## Improvements
* [#7542](https://github.com/FirebirdSQL/firebird/issues/7542): Compiler warnings raise when build cloop-generated _Firebird.pas_ in RAD Studio 11.3
Contributor(s): Vlad Khorsun
* [#7539](https://github.com/FirebirdSQL/firebird/issues/7539): `RDB$GET/SET_CONTEXT()`: enclosing in apostrophes or double quotes of a missed namespace/variable will made output more readable
Contributor(s): Vlad Khorsun
* [#7494](https://github.com/FirebirdSQL/firebird/issues/7494): Avoid non necessary index reads
Contributor(s): Vlad Khorsun
* [#7468](https://github.com/FirebirdSQL/firebird/issues/7468): Add switch to control in guardian timeout before killing firebird server process
Contributor(s): Alex Peshkoff
* [#7437](https://github.com/FirebirdSQL/firebird/issues/7437): Updated _zlib_ to version 1.2.13 (released 2022-10-13)
Contributor(s): Vlad Khorsun
* [#7425](https://github.com/FirebirdSQL/firebird/issues/7425): Add REPLICA MODE to the output of the _isql_ `SHOW DATABASE` command
Contributor(s): Dmitry Yemanov
* [#7418](https://github.com/FirebirdSQL/firebird/issues/7418): Improve reliability of plugin manager
Contributor(s): Alex Peshkoff
* [#7294](https://github.com/FirebirdSQL/firebird/issues/7294): Allow FB-known macros in replication.conf
Contributor(s): Dmitry Yemanov
* [#7259](https://github.com/FirebirdSQL/firebird/issues/7259): Remove TcpLoopbackFastPath and use of SIO_LOOPBACK_FAST_PATH
Contributor(s): Vlad Khorsun
* [#7186](https://github.com/FirebirdSQL/firebird/issues/7186): _Nbackup_ `RDB$BACKUP_HISTORY` cleanup
Contributor(s): Vlad Khorsun
## Bugfixes
* [#7683](https://github.com/FirebirdSQL/firebird/issues/7683): `rdb$time_zone_util.transitions` returns an infinite result set
Contributor(s): Adriano dos Santos Fernandes
* [#7670](https://github.com/FirebirdSQL/firebird/issues/7670): Cursor name can duplicate parameter and variable names in procedures and functions
Contributor(s): Adriano dos Santos Fernandes
* [#7665](https://github.com/FirebirdSQL/firebird/issues/7665): Wrong result ordering in `LEFT JOIN` query
Contributor(s): Dmitry Yemanov
* [#7664](https://github.com/FirebirdSQL/firebird/issues/7664): `DROP TABLE` executed for a table with big records may lead to "wrong page type" or "end of file" error
Contributor(s): Ilya Eremin
* [#7662](https://github.com/FirebirdSQL/firebird/pull/7662): Peformance issues in prepare_update()
Contributor(s): Ilya Eremin
* [#7661](https://github.com/FirebirdSQL/firebird/issues/7661): FB CS rejects new connections
Contributor(s): Vlad Khorsun
* [#7651](https://github.com/FirebirdSQL/firebird/issues/7651): Unable to find savepoint in insert with nested query and returning clause in FB4
Contributor(s): Dmitry Yemanov
* [#7638](https://github.com/FirebirdSQL/firebird/issues/7638): `OVERRIDING USER VALUE` should be allowed for `GENERATED ALWAYS AS IDENTITY`
Contributor(s): Adriano dos Santos Fernandes
* [#7627](https://github.com/FirebirdSQL/firebird/issues/7627): The size of the database with big records becomes bigger after backup/restore
Contributor(s): Ilya Eremin
* [#7626](https://github.com/FirebirdSQL/firebird/issues/7626): Segfault when new attachment is done to shutting down database
Contributor(s): Alex Peshkoff
* [#7611](https://github.com/FirebirdSQL/firebird/issues/7611): Can't backup/restore database from v3 to v4 with `SEC$USER_NAME` field longer than 10 characters
Contributor(s): Adriano dos Santos Fernandes
* [#7610](https://github.com/FirebirdSQL/firebird/issues/7610): Uninitialized/random value assigned to `RDB$ROLES.RDB$SYSTEM PRIVILEGES` when restoring from FB3 backup
Contributor(s): Adriano dos Santos Fernandes
* [#7605](https://github.com/FirebirdSQL/firebird/issues/7605): Disallow replication of `RDB$BACKUP_HISTORY`
Contributor(s): Dmitry Yemanov
* [#7604](https://github.com/FirebirdSQL/firebird/issues/7604): PSQL functions do not convert the output BLOB to the connection character set
Contributor(s): Adriano dos Santos Fernandes
* [#7603](https://github.com/FirebirdSQL/firebird/issues/7603): `BIN_SHR` on `INT128` does not apply sign extension
Contributor(s): Alex Peshkoff
* [#7599](https://github.com/FirebirdSQL/firebird/issues/7599): Conversion of text with '\0' to `DECFLOAT` without errors
Contributor(s): Alex Peshkoff
* [#7591](https://github.com/FirebirdSQL/firebird/issues/7591): `RELEASE SAVEPOINT ONLY` works incorrectly
Contributor(s): Dmitry Yemanov
* [#7582](https://github.com/FirebirdSQL/firebird/issues/7582): Missing _isc_info_end_ in _Firebird.pas_
Contributor(s): Alex Peshkoff
* [#7579](https://github.com/FirebirdSQL/firebird/issues/7579): Cannot _nbackup_ a Firebird 3.0 database in Firebird 4.0 service with _engine12_ setup in _Providers_
Contributor(s): Alex Peshkoff
* [#7556](https://github.com/FirebirdSQL/firebird/issues/7556): FB Classic can hang attempting to attach DB while it is starting to encrypt/decrypt
Contributor(s): Alex Peshkoff
* [#7555](https://github.com/FirebirdSQL/firebird/issues/7555): Invalid configuration for random fresh created database may be used after drop of another one with alias in _databases.conf_
Contributor(s): Alex Peshkoff
* [#7548](https://github.com/FirebirdSQL/firebird/issues/7548): `SET BIND OF TIMESTAMP WITH TIME ZONE TO CHAR` is not working with UTF8 connection charset
Contributor(s): Adriano dos Santos Fernandes
* [#7537](https://github.com/FirebirdSQL/firebird/issues/7537): Wrong name in error message when unknown namespace is passed into `RDB$SET_CONTEXT`
Contributor(s): Vlad Khorsun
* [#7535](https://github.com/FirebirdSQL/firebird/issues/7535): High CPU usage connect to Firebird 3 database using Firebird 4 Classic and SuperClassic service
Contributor(s): Vlad Khorsun
* [#7517](https://github.com/FirebirdSQL/firebird/issues/7517): Successful compiling of procedure with wrong PLAN(s) used by some of its statement(s)
Contributor(s): Dmitry Yemanov
* [#7514](https://github.com/FirebirdSQL/firebird/issues/7514): Segfault when detaching after deleting shadow on Classic
Contributor(s): Alex Peshkoff
* [#7510](https://github.com/FirebirdSQL/firebird/issues/7510): Firebird regularly crashes soon after unload of _udr_engine_ plugin
Contributor(s): Alex Peshkoff
* [#7501](https://github.com/FirebirdSQL/firebird/issues/7501): Precision of a standalone unit may differ from a packaged one in SQL dialect 1
Contributor(s): Vlad Khorsun
* [#7499](https://github.com/FirebirdSQL/firebird/issues/7499): Problem with restore (error: index cannot be used in the specified plan)
Contributor(s): Vlad Khorsun
* [#7488](https://github.com/FirebirdSQL/firebird/issues/7488): Invalid real to string cast
Contributor(s): Artyom Abakumov, Alex Peshkoff
* [#7484](https://github.com/FirebirdSQL/firebird/issues/7484): External engine `SYSTEM` not found
Contributor(s): Adriano dos Santos Fernandes
* [#7482](https://github.com/FirebirdSQL/firebird/issues/7482): Result of `blob_append(null, null) (literal '<null>')` is not shown
Contributor(s): Vlad Khorsun, Adriano dos Santos Fernandes
* [#7473](https://github.com/FirebirdSQL/firebird/issues/7473): Client application crash when processing callback requests from server during _attachDatabase_
Contributor(s): Alex Peshkoff
* [#7472](https://github.com/FirebirdSQL/firebird/issues/7472): Window functions may lead to crash interacting with others exceptions
Contributor(s): Adriano dos Santos Fernandes
* [#7467](https://github.com/FirebirdSQL/firebird/issues/7467): Simple SQL crashes Firebird: `select cast(rdb$db_key as integer) from rdb$database`
Contributor(s): Alex Peshkoff
* [#7465](https://github.com/FirebirdSQL/firebird/issues/7465): Restore success illegally reported when _gbak_ was unable to activate all indices
Contributor(s): Alex Peshkoff
* [#7456](https://github.com/FirebirdSQL/firebird/issues/7456): Impossible drop function in package with name of PSQL-function
Contributor(s): Adriano dos Santos Fernandes
* [#7446](https://github.com/FirebirdSQL/firebird/issues/7446): Attempt to use data in destroyed transaction pool
Contributor(s): Alex Peshkoff
* [#7444](https://github.com/FirebirdSQL/firebird/issues/7444): _isql_ crashes while executing test from QA suite
Contributor(s): Alex Peshkoff
* [#7415](https://github.com/FirebirdSQL/firebird/issues/7415): _DbCrypt/KeyHolder_ plugins key changing issues on running server
Contributor(s): Alexey Mochalov
* [#7402](https://github.com/FirebirdSQL/firebird/issues/7402): Server crashes on startup error
Contributor(s): Alex Peshkoff
* [#7398](https://github.com/FirebirdSQL/firebird/issues/7398): Worst plan sort created to execute an indexed tables
Contributor(s): Dmitry Yemanov
* [#7393](https://github.com/FirebirdSQL/firebird/issues/7393): Access violation after double fault in _attachDatabase()_
Contributor(s): Alex Peshkoff
* [#7387](https://github.com/FirebirdSQL/firebird/issues/7387): Unreliable replication behaviour in Linux Classic
Contributor(s): Dmitry Yemanov
* [#7380](https://github.com/FirebirdSQL/firebird/issues/7380): Aliased blob variable with less restrictions makes text blob accept malformed string through `BLOB_APPEND`
Contributor(s): Vlad Khorsun
* [#7379](https://github.com/FirebirdSQL/firebird/issues/7379): `BLOB_APPEND` with existing blob accepts malformed string
Contributor(s): Vlad Khorsun, Adriano dos Santos Fernandes
* [#7371](https://github.com/FirebirdSQL/firebird/issues/7371): Various errors (fatal lock manager error, pthread_mutex_destroy failed) caused by races when opening/closing database
Contributor(s): Alex Peshkoff
* [#7370](https://github.com/FirebirdSQL/firebird/issues/7370): Segfault under OOM conditions
Contributor(s): Alex Peshkoff
* [#7369](https://github.com/FirebirdSQL/firebird/issues/7369): Build fails against _re2_ 20220601
Contributor(s): Adriano dos Santos Fernandes
* [#7365](https://github.com/FirebirdSQL/firebird/issues/7365): Client side aliases do not work in _databases.conf_
Contributor(s): Alex Peshkoff
* [#7361](https://github.com/FirebirdSQL/firebird/issues/7361): Broken compacting of trace config storage
Contributor(s): Alex Peshkoff
* [#7359](https://github.com/FirebirdSQL/firebird/issues/7359): Querying to list the running trace sessions can fail if two service API calls was done before it for a short time (Linux specifics)
Contributor(s): Alex Peshkoff
* [#7357](https://github.com/FirebirdSQL/firebird/issues/7357): Lock manager error when connect a Firebird 3.0 database more than once using SuperClassic Firebird 4.0 service
Contributor(s): Alex Peshkoff
* [#7349](https://github.com/FirebirdSQL/firebird/issues/7349): Contradictory licensing/distribution statements in several charset-support files
Contributor(s): Mark Rotteveel
* [#7314](https://github.com/FirebirdSQL/firebird/issues/7314): Multitreaded activating indices restarts server process
Contributor(s): Vlad Khorsun
* [#7298](https://github.com/FirebirdSQL/firebird/issues/7298): Unreliable info result parsing
Contributor(s): Alex Peshkoff
* [#7296](https://github.com/FirebirdSQL/firebird/issues/7296): During shutdown _op_disconnect_ may be sent to invalid handle
Contributor(s): Alex Peshkoff
* [#7295](https://github.com/FirebirdSQL/firebird/issues/7295): Unexpected message 'Error reading data from the connection' when _fbtracemgr_ is closed using Ctrl-C
Contributor(s): Alex Peshkoff
* [#7283](https://github.com/FirebirdSQL/firebird/issues/7283): Suspicious error message during install
Contributor(s): Alex Peshkoff
* [#7276](https://github.com/FirebirdSQL/firebird/issues/7276): Firebird 4 literal with `CONTAINING` crashes server
Contributor(s): Vlad Khorsun
* [#7271](https://github.com/FirebirdSQL/firebird/issues/7271): Sporadic server crash
Contributor(s): Vlad Khorsun
* [#7262](https://github.com/FirebirdSQL/firebird/issues/7262): Repeated _op_batch_create_ leaks the batch
Contributor(s): Alex Peshkoff
* [#7256](https://github.com/FirebirdSQL/firebird/issues/7256): Inconsistent conversion of non-TEXT blobs in `BLOB_APPEND`
Contributor(s): Vlad Khorsun
* [#7255](https://github.com/FirebirdSQL/firebird/issues/7255): `READ COMMITTED READ CONSISTENCY` mode is broken in Classic / SuperClassic on Linux
Contributor(s): Alex Peshkoff
* [#7233](https://github.com/FirebirdSQL/firebird/pull/7233): Slow database restore when Classic server mode is used
Contributor(s): Ilya Eremin
* [#7241](https://github.com/FirebirdSQL/firebird/issues/7241): MacOS installer - firebird user is not created correctly if group already exists
Contributor(s): Jonathan Frutos
* [#7239](https://github.com/FirebirdSQL/firebird/issues/7239): Connect using XNET protocol shows different exception (comparing to INET) if database is in the shutdown state
Contributor(s): Vlad Khorsun
* [#6941](https://github.com/FirebirdSQL/firebird/issues/6941): Dummy (always true) conditions may change the join order
Contributor(s): Dmitry Yemanov
* [#4729](https://github.com/FirebirdSQL/firebird/issues/4729): `GRANT` and `REVOKE UPDATE` (field)
Contributor(s): Alex Peshkoff
# v4.0.2
## New features
* [#6983](https://github.com/FirebirdSQL/firebird/pull/6983): New built-in function BLOB_APPEND
Reference(s): [/doc/sql.extensions/README.blob_append.md](https://github.com/FirebirdSQL/firebird/raw/v4.0-release/doc/sql.extensions/README.blob_append.md)
Contributor(s): Vlad Khorsun
## Improvements
* [#7208](https://github.com/FirebirdSQL/firebird/issues/7208): Trace: provide performance statistics for DDL statement
Contributor(s): Vlad Khorsun
* [#7194](https://github.com/FirebirdSQL/firebird/issues/7194): Make it possible to avoid _fbclient_ dependency in Pascal programs using _firebird.pas_
Contributor(s): Alex Peshkoff
* [#7168](https://github.com/FirebirdSQL/firebird/issues/7168): Ignore missing UDR libraries during restore
Contributor(s): Adriano dos Santos Fernandes
* [#7161](https://github.com/FirebirdSQL/firebird/issues/7161): Update _zlib_ to version 1.2.12
Contributor(s): Vlad Khorsun
* [#7093](https://github.com/FirebirdSQL/firebird/issues/7093): Improve indexed lookup speed of strings when the last keys characters are part of collated contractions
Contributor(s): Adriano dos Santos Fernandes
* [#7092](https://github.com/FirebirdSQL/firebird/issues/7092): Improve performance of `CURRENT_TIME`
Contributor(s): Adriano dos Santos Fernandes
* [#7042](https://github.com/FirebirdSQL/firebird/issues/7042): `ON DISCONNECT` triggers are not executed during forced attachment shutdown
Contributor(s): Ilya Eremin
* [#7041](https://github.com/FirebirdSQL/firebird/issues/7041): Firebird port for Apple M1 architecture
Contributor(s): Jonathan Frutos, Alex Peshkoff, Adriano dos Santos Fernandes
* [#7038](https://github.com/FirebirdSQL/firebird/issues/7038): Improve performance of `STARTING WITH` with insensitive collations
Contributor(s): Adriano dos Santos Fernandes
* [#6730](https://github.com/FirebirdSQL/firebird/issues/6730): Trace: provide ability to see `STATEMENT RESTART` events (or their count)
Contributor(s): Vlad Khorsun
## Bugfixes
* [#7243](https://github.com/FirebirdSQL/firebird/issues/7243): Some _UNICODE_ characters can lead to wrong `CONTAINING` evaluation when lower/upper uses different number of bytes in its encoding
Contributor(s): Adriano dos Santos Fernandes
* [#7229](https://github.com/FirebirdSQL/firebird/issues/7229): `ALTER COLUMN DROP IDENTITY` does not reset generator name in metadata cache
Contributor(s): Adriano dos Santos Fernandes
* [#7222](https://github.com/FirebirdSQL/firebird/issues/7222): Dependencies of packaged functions are not tracked
Contributor(s): Adriano dos Santos Fernandes
* [#7217](https://github.com/FirebirdSQL/firebird/pull/7217): It's not allowed to execute DROP PACKAGE BODY for a package with a procedure even if a user has DROP ANY PACKAGE privilege
Contributor(s): Ilya Eremin
* [#7204](https://github.com/FirebirdSQL/firebird/issues/7204): Segfault in _GBAK_ when restoring a broken backup file over the wire
Contributor(s): Alex Peshkoff
* [#7202](https://github.com/FirebirdSQL/firebird/issues/7202): _ISQL -ch utf8_ (Windows only): either silently quits to OS or issues non-expected 'malformed string' when non-ASCII character occurs in the typed command
Contributor(s): Adriano dos Santos Fernandes
* [#7200](https://github.com/FirebirdSQL/firebird/issues/7200): `DROP DATABASE` leads to hang if it is issued while database encrypting/decrypting is in progress
Contributor(s): Alex Peshkoff
* [#7199](https://github.com/FirebirdSQL/firebird/issues/7199): Various errors (strange messages in firebird.log, segfaults) with high rate of attach/detach database operations
Contributor(s): Alex Peshkoff
* [#7197](https://github.com/FirebirdSQL/firebird/issues/7197): Segfault in Linux CS after successful detach from database
Contributor(s): Alex Peshkoff
* [#7194](https://github.com/FirebirdSQL/firebird/issues/7194): _GSTAT_ fails but returns 0 as error code if incorrect _databases.conf_ is used
Contributor(s): Alexey Mochalov
* [#7188](https://github.com/FirebirdSQL/firebird/issues/7188): Memory leak in _fbclient_ when a multi-database transaction is used
Contributor(s): Alex Peshkoff
* [#7184](https://github.com/FirebirdSQL/firebird/issues/7184): _GBAK_ output is not being flushed to disk
Contributor(s): Alex Peshkoff
* [#7179](https://github.com/FirebirdSQL/firebird/issues/7179): Wrong error message - "string right truncation. expected length 30, actual 30."
Contributor(s): Adriano dos Santos Fernandes
* [#7178](https://github.com/FirebirdSQL/firebird/issues/7178): DEFAULTed grants to PUBLIC must act as DEFAULTed to every user
Contributor(s): Roman Simakov
* [#7176](https://github.com/FirebirdSQL/firebird/issues/7176): Incorrect error "Invalid token. Malformed string." with UNION + blob + non-UTF8 varchar
Contributor(s): Adriano dos Santos Fernandes
* [#7167](https://github.com/FirebirdSQL/firebird/issues/7167): Incorrect transliteration of field names in constraint violation errors
Contributor(s): Adriano dos Santos Fernandes
* [#7160](https://github.com/FirebirdSQL/firebird/issues/7160): Missing checkout in the trace manager when performing user mapping may cause server hang
Contributor(s): Alex Peshkoff
* [#7150](https://github.com/FirebirdSQL/firebird/issues/7150): Replication not restarting after network failure
Contributor(s): Dmitry Yemanov
* [#7147](https://github.com/FirebirdSQL/firebird/issues/7147): Problems with use of big timeout (or no timeout at all) in the trace service
Contributor(s): Alex Peshkoff
* [#7141](https://github.com/FirebirdSQL/firebird/issues/7141): Services manager breaks long lines into 1023 bytes portions when using _isc_info_svc_line_ in _Service::query()_
Contributor(s): Adriano dos Santos Fernandes
* [#7140](https://github.com/FirebirdSQL/firebird/issues/7140): Wrong select result in case of special sort character
Contributor(s): Adriano dos Santos Fernandes
* [#7139](https://github.com/FirebirdSQL/firebird/issues/7139): With multiple trace sessions user may receive trace events related to engine's requests
Contributor(s): Alex Peshkoff
* [#7138](https://github.com/FirebirdSQL/firebird/issues/7138): Problems accessing FB4 database, copied from another host
Contributor(s): Alex Peshkoff
* [#7135](https://github.com/FirebirdSQL/firebird/issues/7135): Firebird engine randomly fails when delivering mapping clear signal to other processes
Contributor(s): Alex Peshkoff
* [#7134](https://github.com/FirebirdSQL/firebird/issues/7134): Database page errors directly after _GBAK_, dissappearing after some calls of _GFIX_
Contributor(s): Vlad Khorsun
* [#7129](https://github.com/FirebirdSQL/firebird/issues/7129): Cannot alter SQL SECURITY on package
Contributor(s): Alexey Mochalov
* [#7128](https://github.com/FirebirdSQL/firebird/issues/7128): Incorrect error message with _isc_sql_interprete()_
Contributor(s): Vlad Khorsun
* [#7124](https://github.com/FirebirdSQL/firebird/issues/7124): Inconsistent _RDB$USER_PRIVILEGES_ after dropping identity
Contributor(s): Adriano dos Santos Fernandes
* [#7123](https://github.com/FirebirdSQL/firebird/issues/7123): ISQL does not extract `INCREMENT BY` for IDENTITY column
Contributor(s): Adriano dos Santos Fernandes
* [#7122](https://github.com/FirebirdSQL/firebird/issues/7122): Invalid state of mapping cache after replacement of database
Contributor(s): Alex Peshkoff
* [#7121](https://github.com/FirebirdSQL/firebird/issues/7121): Mapping error when server tries to use mapping rules from database in full shutdown mode
Contributor(s): Alex Peshkoff
* [#7119](https://github.com/FirebirdSQL/firebird/issues/7119): Database statistics service could not find existing table(s)
Contributor(s): Vlad Khorsun
* [#7118](https://github.com/FirebirdSQL/firebird/issues/7118): Chained `JOIN .. USING` across the same column names may be optimized badly
Contributor(s): Dmitry Yemanov
* [#7113](https://github.com/FirebirdSQL/firebird/issues/7113): Wrong path in Object Pascal's readme.md
Contributor(s): Alex Peshkoff
* [#7112](https://github.com/FirebirdSQL/firebird/issues/7112): Avoid unload of plugins in MacOS due to problematic reload of them
Contributor(s): Adriano dos Santos Fernandes
* [#7108](https://github.com/FirebirdSQL/firebird/issues/7108): Firebird does not find an record when adding a foreign key
Contributor(s): Adriano dos Santos Fernandes
* [#7106](https://github.com/FirebirdSQL/firebird/issues/7106): Wrong detection of must-be-delimited user names
Contributor(s): Alex Peshkoff
* [#7103](https://github.com/FirebirdSQL/firebird/issues/7103): FB service hangs after several `DELETE FROM MON$STATEMENTS` being issued in order to stop ES/EDS which waits record for updating
Contributor(s): Vlad Khorsun
* [#7099](https://github.com/FirebirdSQL/firebird/issues/7099): Incomplete _op_batch_cs_ response with _TAG_MULTIERROR_
Contributor(s): Alex Peshkoff
* [#7096](https://github.com/FirebirdSQL/firebird/issues/7096): Client install on Windows is missing some files
Contributor(s): Paul Reeves
* [#7094](https://github.com/FirebirdSQL/firebird/issues/7094): Incorrect indexed lookup of strings when the last keys characters are part of collated contractions and there is multi-segment insensitive descending index
Contributor(s): Adriano dos Santos Fernandes
* [#7090](https://github.com/FirebirdSQL/firebird/issues/7090): Performance degradation with `CURRENT_DATE`, `LOCALTIME` and `LOCALTIMESTAMP`
Contributor(s): Adriano dos Santos Fernandes
* [#7088](https://github.com/FirebirdSQL/firebird/pull/7088): MacOS UDR and Legacy_UserManager plugins not working due to not exported entry point
Contributor(s): Adriano dos Santos Fernandes
* [#7084](https://github.com/FirebirdSQL/firebird/issues/7084): Creating unique constraints on MacOS fails on larger tables
Contributor(s): Adriano dos Santos Fernandes
* [#7080](https://github.com/FirebirdSQL/firebird/issues/7080): Executing batch crashes the server
Contributor(s): Alex Peshkoff
* [#6947](https://github.com/FirebirdSQL/firebird/issues/6947): Query to MON$ tables does not return data when database encryption/decryption is in progress
Contributor(s): Alex Peshkoff
* [#4085](https://github.com/FirebirdSQL/firebird/issues/4085): _RDB$INDICES_ information stored inconsistently after a `CREATE INDEX`
Contributor(s): Dmitry Yemanov
* [#3357](https://github.com/FirebirdSQL/firebird/issues/3357): Bad execution plan if some stream depends on multiple streams via a function
Contributor(s): Dmitry Yemanov
# v4.0.1
## New features
* [#6910](https://github.com/FirebirdSQL/firebird/issues/6910): Add way to retrieve statement BLR with Statement::getInfo and ISQL's SET EXEC_PATH_DISPLAY BLR
Contributor(s): Adriano dos Santos Fernandes
## Improvements
* [#6959](https://github.com/FirebirdSQL/firebird/issues/6959): Add IBatch::getInfo() method to the API
Contributor(s): Alex Peshkoff
* [#6954](https://github.com/FirebirdSQL/firebird/issues/6954): fb_info_protocol_version support
Contributor(s): Alex Peshkoff
* [#6929](https://github.com/FirebirdSQL/firebird/issues/6929): Add support of PKCS v.1.5 padding to RSA functions, needed for backward compatibility with old systems
Contributor(s): Alex Peshkoff
* [#6915](https://github.com/FirebirdSQL/firebird/issues/6915): Allow attribute DISABLE-COMPRESSIONS in UNICODE collations
Contributor(s): Adriano dos Santos Fernandes
* [#6903](https://github.com/FirebirdSQL/firebird/issues/6903): Make it possible to create ICU-based collations with locales keywords
Contributor(s): tkeinz, Adriano dos Santos Fernandes
* [#6872](https://github.com/FirebirdSQL/firebird/issues/6872): Faster indexed STARTING WITH execution with UNICODE collations
Contributor(s): Adriano dos Santos Fernandes
* [#6810](https://github.com/FirebirdSQL/firebird/issues/6810): Use precise limit of salt length when signing messages and verifying the sign
Contributor(s): Alex Peshkoff
* [#6809](https://github.com/FirebirdSQL/firebird/issues/6809): Integer hex-literal support for INT128
Contributor(s): Alex Peshkoff
## Bugfixes
* [#7070](https://github.com/FirebirdSQL/firebird/issues/7070): Error "BLOB is not found" while replication converts INSERT into UPDATE for a conflicting record
Contributor(s): Dmitry Yemanov
* [#7068](https://github.com/FirebirdSQL/firebird/issues/7068): Errors in the ChaCha plugin are displayed incorrectly
Contributor(s): Alex Peshkoff
* [#7067](https://github.com/FirebirdSQL/firebird/issues/7067): Deadlock when using not initialized security database
Contributor(s): Alex Peshkoff
* [#7066](https://github.com/FirebirdSQL/firebird/issues/7066): Server may send incorrect specific data to client when establishing encrypted connection
Contributor(s): Alex Peshkoff
* [#7065](https://github.com/FirebirdSQL/firebird/issues/7065): Connection hangs after delivery of 256GB of data
Contributor(s): Alex Peshkoff
* [#7064](https://github.com/FirebirdSQL/firebird/issues/7064): Linear regression functions aren't implemented correctly
Contributor(s): Adriano dos Santos Fernandes
* [#7062](https://github.com/FirebirdSQL/firebird/issues/7062): Creation of expression index does not release its statement correctly
Contributor(s): Adriano dos Santos Fernandes
* [#7060](https://github.com/FirebirdSQL/firebird/issues/7060): Deadlock when execute test for CORE-4337
Contributor(s): Alex Peshkoff
* [#7057](https://github.com/FirebirdSQL/firebird/issues/7057): Client-side positioned updates work wrongly with scrollable cursors
Contributor(s): Dmitry Yemanov
* [#7056](https://github.com/FirebirdSQL/firebird/issues/7056): Fetching from a scrollable cursor may overwrite user-specified buffer and corrupt memory
Contributor(s): Dmitry Yemanov
* [#7052](https://github.com/FirebirdSQL/firebird/issues/7052): Races between transactions on the primary side may cause update conflicts while applying journals to the replica
Contributor(s): Dmitry Yemanov
* [#7048](https://github.com/FirebirdSQL/firebird/issues/7048): Incorrect releasing of user savepoint (older savepoints become inaccessible)
Contributor(s): Dmitry Yemanov
* [#7043](https://github.com/FirebirdSQL/firebird/issues/7043): Wrong message when user has no access to /tmp/firebird
Contributor(s): Alex Peshkoff
* [#7037](https://github.com/FirebirdSQL/firebird/issues/7037): Build problem when using both --with-builtin-tommath and --with-builtin-tomcrypt
Contributor(s): Adriano dos Santos Fernandes
* [#7034](https://github.com/FirebirdSQL/firebird/issues/7034): Server crashes while fetching from a scrollable cursor in PSQL
Contributor(s): Dmitry Yemanov
* [#7033](https://github.com/FirebirdSQL/firebird/issues/7033): Replicator is missing sanity checks for user-supplied blocks
Contributor(s): Dmitry Yemanov
* [#7018](https://github.com/FirebirdSQL/firebird/issues/7018): Problems with windows frames
Contributor(s): Adriano dos Santos Fernandes
* [#7015](https://github.com/FirebirdSQL/firebird/issues/7015): Replication applier code may crash if the specified block contains no savepoint operations
Contributor(s): Dmitry Yemanov
* [#6998](https://github.com/FirebirdSQL/firebird/issues/6998): Problems with access to RDB$CONFIG table for non-privileged user when he has grant on execution of SP which has necessary access rights (created by SYSDBA with SQL DEFINER clause)
Contributor(s): Roman Simakov
* [#6995](https://github.com/FirebirdSQL/firebird/issues/6995): "String truncation error" is raised while restoring the database from a v2.5 backup
Contributor(s): Dmitry Yemanov
* [#6989](https://github.com/FirebirdSQL/firebird/issues/6989): Invalid message in replication.log (and possibly crash in the case of synchronous replication) when the target DB has no "replica" flag set
Contributor(s): Dmitry Yemanov
* [#6985](https://github.com/FirebirdSQL/firebird/issues/6985): Application could hang when using new Batch API with blobs over XNET
Contributor(s): Vlad Khorsun
* [#6979](https://github.com/FirebirdSQL/firebird/issues/6979): Windows x64 server installer installs an incomplete x86 client
Contributor(s): Paul Reeves
* [#6978](https://github.com/FirebirdSQL/firebird/issues/6978): Firebird 4 fails to build on big endian platforms
Contributor(s): Alex Peshkoff
* [#6976](https://github.com/FirebirdSQL/firebird/issues/6976): Lack of proper clean up after failure to initialize shared memory
Contributor(s): Vlad Khorsun
* [#6975](https://github.com/FirebirdSQL/firebird/issues/6975): Crash or hang while shutting down the replica database if segments are being applied
Contributor(s): Dmitry Yemanov
* [#6968](https://github.com/FirebirdSQL/firebird/issues/6968): On Windows, engine may hang when works with corrupted database and read after the end of file
Contributor(s): Vlad Khorsun
* [#6966](https://github.com/FirebirdSQL/firebird/issues/6966): Status vector for ES(<EMPTY_STRING>) is unstable if another execute block with correct statement was executed before. Affects only LINUX builds in Classic mode
Contributor(s): Alex Peshkoff
* [#6963](https://github.com/FirebirdSQL/firebird/issues/6963): The REFERENCES permission does not work
Contributor(s): Alex Peshkoff
* [#6955](https://github.com/FirebirdSQL/firebird/issues/6955): fb_info_creation_timestamp_tz returns a corrupted buffer
Contributor(s): Vlad Khorsun
* [#6945](https://github.com/FirebirdSQL/firebird/issues/6945): Segfault in the batch interface when gbak restores a database with many blobs over the wire
Contributor(s): Alex Peshkoff
* [#6943](https://github.com/FirebirdSQL/firebird/issues/6943): Windows client install is missing some DLLs
Contributor(s): Paul Reeves
* [#6935](https://github.com/FirebirdSQL/firebird/issues/6935): SQL SECURITY DEFINER has inconsistent behaviour if the object owner is non-privileged
Contributor(s): Dmitry Yemanov
* [#6935](https://github.com/FirebirdSQL/firebird/issues/6935): SQL SECURITY DEFINER does not affect the ownership of created DDL objects
Contributor(s): Dmitry Yemanov
* [#6930](https://github.com/FirebirdSQL/firebird/issues/6930): Segfault when calling cryptographic functions
Contributor(s): Alex Peshkoff
* [#6917](https://github.com/FirebirdSQL/firebird/issues/6917): Firebird 4 installer asks for SYSDBA password when doing client installation
Contributor(s): Paul Reeves
* [#6913](https://github.com/FirebirdSQL/firebird/issues/6913): Buffer overflows in getInfo APIs
Contributor(s): Adriano dos Santos Fernandes
* [#6909](https://github.com/FirebirdSQL/firebird/issues/6909): Some updates may crash Firebird server on the replica side
Contributor(s): Dmitry Yemanov
* [#6907](https://github.com/FirebirdSQL/firebird/issues/6907): Failed DDL commands can be replicated
Contributor(s): Dmitry Yemanov
* [#6900](https://github.com/FirebirdSQL/firebird/issues/6900): IBatch::add() method fails silently when a memory limit is exceeded
Contributor(s): Alex Peshkoff
* [#6893](https://github.com/FirebirdSQL/firebird/issues/6893): Problem with replication of BLOB segments longer than 32KB
Contributor(s): Dmitry Yemanov
* [#6887](https://github.com/FirebirdSQL/firebird/issues/6887): Invalid SIMILAR TO patterns may lead memory read beyond string limits
Contributor(s): Adriano dos Santos Fernandes
* [#6886](https://github.com/FirebirdSQL/firebird/issues/6886): Differerent interfaces behaviour depending upon source of interface
Contributor(s): Alex Peshkoff
* [#6887](https://github.com/FirebirdSQL/firebird/issues/6887): Significant performance regression of SIMILAR TO and SUBSTRING(SIMILAR) when pattern is taken from a variable
Contributor(s): Adriano dos Santos Fernandes
* [#6874](https://github.com/FirebirdSQL/firebird/issues/6874): Literal 65536 (interpreted as int) cannot be multiplied by itself w/o cast if result is more than 2^63-1
Contributor(s): Alex Peshkoff
* [#6860](https://github.com/FirebirdSQL/firebird/issues/6860): Create user statement fails with SQLSTATE = HY000 when using DataTypeCompatibility
Contributor(s): Alex Peshkoff
* [#6856](https://github.com/FirebirdSQL/firebird/issues/6856): Permission error after replication of DDL commands
Contributor(s): Dmitry Yemanov
* [#6853](https://github.com/FirebirdSQL/firebird/issues/6853): Asynchronous replication leaks file handles
Contributor(s): Dmitry Yemanov
* [#6850](https://github.com/FirebirdSQL/firebird/issues/6850): Database-level and DDL triggers are executed at the replica side
Contributor(s): Dmitry Yemanov
* [#6849](https://github.com/FirebirdSQL/firebird/issues/6849): Conflicting INSERT propagated into a read-write replica may cause duplicate records to appear (and PK/UK violation to happen)
Contributor(s): Dmitry Yemanov
* [#6848](https://github.com/FirebirdSQL/firebird/issues/6848): Generator values may not replicate after commit
Contributor(s): Dmitry Yemanov
* [#6845](https://github.com/FirebirdSQL/firebird/issues/6845): Result type of AVG over BIGINT column results in type INT128
Contributor(s): Alex Peshkoff
* [#6838](https://github.com/FirebirdSQL/firebird/issues/6838): Deleting multiple rows from a view with triggers may cause triggers to fire just once
Contributor(s): Dmitry Yemanov
* [#6832](https://github.com/FirebirdSQL/firebird/issues/6832): Segfault when using COMMIT RETAINING with Global Temporary Tables
Contributor(s): Alex Peshkoff
* [#6801](https://github.com/FirebirdSQL/firebird/issues/6801): Error recompiling a package with some combination of nested functions
Contributor(s): Adriano dos Santos Fernandes
# v4.0 Release (01-Jun-2021)
## Improvements
* [#6806](https://github.com/FirebirdSQL/firebird/issues/6806): Rename RSA_SIGN and RSA_VERIFY
Reference(s): [/doc/sql.extensions/README.builtin_functions.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.builtin_functions.txt), [/doc/sql.extensions/README.keywords](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.keywords)
Contributor(s): Alex Peshkoff
* [#6786](https://github.com/FirebirdSQL/firebird/issues/6786): Add session time zone to system context
Reference(s): [/doc/sql.extensions/README.time_zone.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.time_zone.md), [/doc/sql.extensions/README.context_variables2](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.context_variables2)
Contributor(s): Adriano dos Santos Fernandes
* [#6769](https://github.com/FirebirdSQL/firebird/issues/6769): More efficient implementation of SUBSTRING for UTF8 character set
Contributor(s): Adriano dos Santos Fernandes
* [#6767](https://github.com/FirebirdSQL/firebird/issues/6767): Add ability for a replication plugin to refuse attachment
Contributor(s): Dmitry Yemanov
* [#6748](https://github.com/FirebirdSQL/firebird/issues/6748): Freeing a statement using DSQL_drop or DSQL_unprepare should send free packet immediately
Contributor(s): Vlad Khorsun
* [#6715](https://github.com/FirebirdSQL/firebird/issues/6715): Provide time zone ID constants in public headers
Contributor(s): Adriano dos Santos Fernandes
* [#6253](https://github.com/FirebirdSQL/firebird/issues/6253): RDB$GET_TRANSACTION_CN should work the same way in Super and Classic
Contributor(s): Vlad Khorsun
## Bugfixes
* [#6816](https://github.com/FirebirdSQL/firebird/issues/6816): Illegal output length in base64/hex encode/decode functions
Contributor(s): Alex Peshkoff
* [#6812](https://github.com/FirebirdSQL/firebird/issues/6812): BASE64_ENCODE and HEX_ENCODE can exceed maximum widths for VARCHAR
Contributor(s): Alex Peshkoff
* [#6808](https://github.com/FirebirdSQL/firebird/issues/6808): Segfault in encrypt/decrypt functions when their first argument is NULL
Contributor(s): Alex Peshkoff
* [#6805](https://github.com/FirebirdSQL/firebird/issues/6805): RDB$TYPES has incorrect entries for RDB$TYPE 28 and 29 in RDB$TYPE_NAME column
Contributor(s): Alex Peshkoff
* [#6804](https://github.com/FirebirdSQL/firebird/issues/6804): Assertion in tomcrypt when key length for RC4 is too small
Contributor(s): Alex Peshkoff
* [#6802](https://github.com/FirebirdSQL/firebird/issues/6802): When the statement timeout is set, it causes the lock manager to delay reporting deadlocks until timeout is expired
Contributor(s): Vlad Khorsun
* [#6800](https://github.com/FirebirdSQL/firebird/issues/6800): Client config DefaultTimeZone is not passed to server when isc_dpb_session_time_zone is not set
Contributor(s): Adriano dos Santos Fernandes
* [#6797](https://github.com/FirebirdSQL/firebird/issues/6797): Functions DECRYPT and RSA_DECRYPT return VARCHAR CHARACTER SET NONE instead of VARBINARY (VARCHAR CHARACTER SET OCTETS)
Contributor(s): Alex Peshkoff
* [#6796](https://github.com/FirebirdSQL/firebird/issues/6796): Buffer overflow when padding line with national characters causes ISQL to crash
Contributor(s): Adriano dos Santos Fernandes
* [#6795](https://github.com/FirebirdSQL/firebird/issues/6795): Replication gets stuck due to "Blob xxx.xx is not found for table xxx" error
Contributor(s): Dmitry Yemanov
* [#6790](https://github.com/FirebirdSQL/firebird/issues/6790): MON$ATTACHMENTS.MON$TIMESTAMP is incorrect when DefaultTimeZone is configured with time zone different from the server's default
Contributor(s): Adriano dos Santos Fernandes
* [#6787](https://github.com/FirebirdSQL/firebird/issues/6787): MON$ATTACHMENTS.MON$TIMESTAMP should use its session original time zone
Contributor(s): Adriano dos Santos Fernandes
* [#6785](https://github.com/FirebirdSQL/firebird/issues/6785): Problem when restoring the database on Firebird 4 RC1
Contributor(s): Vlad Khorsun
* [#6782](https://github.com/FirebirdSQL/firebird/issues/6782): Cannot get "records fetched" for selectable procedures in trace
Contributor(s): Vlad Khorsun
* [#6781](https://github.com/FirebirdSQL/firebird/issues/6781): Crashing (due to UDF exception) process hangs
Contributor(s): Vlad Khorsun
* [#6780](https://github.com/FirebirdSQL/firebird/issues/6780): firebird.msg is missing in Firebird Android builds
Contributor(s): Alex Peshkoff
* [#6778](https://github.com/FirebirdSQL/firebird/issues/6778): Inconsistent cursor-driven deletion
Contributor(s): Dmitry Yemanov
* [#6777](https://github.com/FirebirdSQL/firebird/issues/6777): AV when the engine shuts down and cancels an attachment waiting in the lock manager
Contributor(s): Vlad Khorsun
* [#6768](https://github.com/FirebirdSQL/firebird/issues/6768): Restore backup on RawDevice (error during "open O_CREAT" operation for file "/dev/sda1")
Contributor(s): Alex Peshkoff
* [#6766](https://github.com/FirebirdSQL/firebird/issues/6766): Replication plugin can crash engine returning nullptr from startTransaction() method
Contributor(s): Dmitry Yemanov
* [#6761](https://github.com/FirebirdSQL/firebird/issues/6761): Hash join cannot match records using some TIME ZONE / DECFLOAT keys
Contributor(s): Dmitry Yemanov
* [#6759](https://github.com/FirebirdSQL/firebird/issues/6759): Results of concatenation with blob has no info about collation of source columns (which are declared with such info)
Contributor(s): Vlad Khorsun
* [#6758](https://github.com/FirebirdSQL/firebird/issues/6758): COMPUTED BY column looses charset and collate of source field <F> when <F> is either of type BLOB or VARCHAR casted to BLOB
Contributor(s): Vlad Khorsun
* [#6756](https://github.com/FirebirdSQL/firebird/issues/6756): Error "no current record for fetch operation" when sorting by a international string
Contributor(s): Dmitry Yemanov
* [#6754](https://github.com/FirebirdSQL/firebird/issues/6754): Connect to database that contains broken pages can lead to FB crash
Contributor(s): Alex Peshkoff
* [#6753](https://github.com/FirebirdSQL/firebird/issues/6753): AV in the engine when StatementTimeout is active for user statement and some internal DSQL statement was executed as part of overall execution process
Contributor(s): Vlad Khorsun
* [#6752](https://github.com/FirebirdSQL/firebird/issues/6752): Segfaults in fbclient when receiving invalid / unexpected data from server
Contributor(s): Alex Peshkoff
* [#6751](https://github.com/FirebirdSQL/firebird/issues/6751): Various segfaults in fbclient
Contributor(s): Alex Peshkoff
* [#6750](https://github.com/FirebirdSQL/firebird/issues/6750): CAST of Infinity values to FLOAT doesn't work
Contributor(s): Alex Peshkoff
* [#6749](https://github.com/FirebirdSQL/firebird/issues/6749): Error "Invalid time zone (+08). Falling back to displacement" in firebird.log
Contributor(s): Adriano dos Santos Fernandes
* [#6747](https://github.com/FirebirdSQL/firebird/issues/6747): Wrong message when connecting to tiny trash database file
Contributor(s): Alex Peshkoff
* [#6746](https://github.com/FirebirdSQL/firebird/issues/6746): Regression: CREATE DATABASE fails with 'Token unknown' error when DB name is enclosed in double quotes and 'DEFAULT CHARACTER SET' is specified after DB name
Contributor(s): Adriano dos Santos Fernandes
* [#6745](https://github.com/FirebirdSQL/firebird/issues/6745): Protect included tomcrypt library from being overwritten by a system package
Contributor(s): Alex Peshkoff
* [#6738](https://github.com/FirebirdSQL/firebird/issues/6738): Segfault when GFIX requests for database page buffer more memory than available from OS
Contributor(s): Alex Peshkoff
* [#6734](https://github.com/FirebirdSQL/firebird/issues/6734): Provide same results for date arithmetics when date is changed by values near +/-max(bigint)
Contributor(s): Alex Peshkoff
* [#6733](https://github.com/FirebirdSQL/firebird/issues/6733): Attempt to create database with page_size >= 65536 makes DB with actual page size = 4KB or 8KB, but not 32KB as it should
Contributor(s): Alex Peshkoff
* [#6731](https://github.com/FirebirdSQL/firebird/issues/6731): Segfault when shutting down database which got encrypted by another process
Contributor(s): Alex Peshkoff
* [#6729](https://github.com/FirebirdSQL/firebird/issues/6729): Regression: GSTAT with switch -t executed via services fails with "found unknown switch" error
Contributor(s): Alex Peshkoff
* [#6727](https://github.com/FirebirdSQL/firebird/issues/6727): Synchronous replication to localhost hangs on disconnect
Contributor(s): Dmitry Yemanov
* [#6724](https://github.com/FirebirdSQL/firebird/issues/6724): Inconsistent translation "string->timestamp->string->timestamp" in Dialect 1
Contributor(s): Adriano dos Santos Fernandes
* [#6719](https://github.com/FirebirdSQL/firebird/issues/6719): User without ALTER ANY ROLE privilege can use COMMENT ON ROLE
Contributor(s): Alex Peshkoff
* [#6718](https://github.com/FirebirdSQL/firebird/issues/6718): Event delivery could be missed when local (XNET) protocol is used
Contributor(s): Vlad Khorsun
* [#6717](https://github.com/FirebirdSQL/firebird/issues/6717): FETCH ABSOLUTE and RELATIVE beyond bounds of cursor should always position immediately before-first or after-last
Contributor(s): Dmitry Yemanov
* [#6716](https://github.com/FirebirdSQL/firebird/issues/6716): FETCH RELATIVE has an off by one error for the first row
Contributor(s): Dmitry Yemanov
* [#6710](https://github.com/FirebirdSQL/firebird/issues/6710): COMMENT ON USER can only apply comment on user defined by the default user manager plugin
Contributor(s): Alex Peshkoff
* [#6709](https://github.com/FirebirdSQL/firebird/issues/6709): GBAK discards replica mode during backup/restore
Contributor(s): Dmitry Yemanov
* [#6708](https://github.com/FirebirdSQL/firebird/issues/6708): Rare race condition in Plugin Manager could lead to the server crash
Contributor(s): Vlad Khorsun
* [#6700](https://github.com/FirebirdSQL/firebird/issues/6700): Wire compression causes sporadic "Error reading data from the connection" errors
Contributor(s): Alex Peshkoff
* [#6698](https://github.com/FirebirdSQL/firebird/issues/6698): Comments before the first line of code are removed
Contributor(s): Adriano dos Santos Fernandes
* [#6679](https://github.com/FirebirdSQL/firebird/issues/6679): CLOOP envelopes are wrong regarding IStatus
Contributor(s): Alex Peshkoff
* [#6265](https://github.com/FirebirdSQL/firebird/issues/6265): Segfault when using expression index with complex expression
Contributor(s): Vlad Khorsun
* [#5784](https://github.com/FirebirdSQL/firebird/issues/5784): When 32-bit and 64-bit Firebird 3 servers run on a single Windows machine concurrently, Firebird services freeze several minutes after first disconnect
Contributor(s): Vlad Khorsun
* [#3810](https://github.com/FirebirdSQL/firebird/issues/3810): Wrong or missing IS NULL optimization (regression)
Contributor(s): Vlad Khorsun
* [#3106](https://github.com/FirebirdSQL/firebird/issues/3106): Many indexed reads in a compound index with NULLs
Contributor(s): Vlad Khorsun
* [#2469](https://github.com/FirebirdSQL/firebird/issues/2469): Stored procedure recursively called by calculated field fails after reconnect
Contributor(s): Vlad Khorsun
# v4.0 Release Candidate 1 (01-Feb-2021)
## New features
* [CORE-5832](http://tracker.firebirdsql.org/browse/CORE-5832): Add command to reset user session environment to its initial (default) state
Contributor(s): Vlad Khorsun
* [CORE-3708](http://tracker.firebirdsql.org/browse/CORE-3708): Add virtual table RDB$CONFIG that shows actual configuration settings
Contributor(s): Vlad Khorsun
## Improvements
* [CORE-6474](http://tracker.firebirdsql.org/browse/CORE-6474): Report replica mode through isc_database_info, MON$DATABASE and SYSTEM context
Contributor(s): Dmitry Yemanov
* [CORE-6469](http://tracker.firebirdsql.org/browse/CORE-6469): Ability to trace session management commands (e.g. ALTER SESSION RESET)
Contributor(s): Vlad Khorsun
* [CORE-6429](http://tracker.firebirdsql.org/browse/CORE-6429): Timezone offset in timestamp/time literal, CAST, SET TIME ZONE and AT TIME ZONE should follow SQL standard syntax only
Reference(s): [/doc/sql.extensions/README.time_zone.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.time_zone.md)
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6413](http://tracker.firebirdsql.org/browse/CORE-6413): Remove PIDFile/-pidfile directive/option from firebird Super(Server/Classic) systemd unit
Contributor(s): Alex Peshkoff
* [CORE-6395](http://tracker.firebirdsql.org/browse/CORE-6395): Allow usage of time zone displacement in config DefaultTimeZone
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6366](http://tracker.firebirdsql.org/browse/CORE-6366): Check presence of tomcrypt & curses libraries before installing Firebird
Contributor(s): Alex Peshkoff
* [CORE-6342](http://tracker.firebirdsql.org/browse/CORE-6342): INT128 as explicit basic type for high precision numerics
Reference(s): [/doc/sql.extensions/README.data_types](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.data_types)
Contributor(s): Alex Peshkoff
* [CORE-6320](http://tracker.firebirdsql.org/browse/CORE-6320): Replace Util methods to get interface pointer by legacy handle with plain functions
Contributor(s): Alex Peshkoff
* [CORE-6308](http://tracker.firebirdsql.org/browse/CORE-6308): Make it possible to update list of time zones (names and ids) without source code recompilation
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6300](http://tracker.firebirdsql.org/browse/CORE-6300): Ability to retrieve next attachment id and next statement id
Reference(s): [/doc/README.monitoring_tables](https://github.com/FirebirdSQL/firebird/raw/master/doc/README.monitoring_tables)
Contributor(s): Dmitry Yemanov
* [CORE-5085](http://tracker.firebirdsql.org/browse/CORE-5085): Allow to fixup (nbackup) database via Services API
Reference(s): [/doc/README.services_extension](https://github.com/FirebirdSQL/firebird/raw/master/doc/README.services_extension)
Contributor(s): Alex Peshkoff
* [CORE-4841](http://tracker.firebirdsql.org/browse/CORE-4841): Report explicit message about missing password in CREATE (OR ALTER) USER
Contributor(s): Alex Peshkoff
* [CORE-2650](http://tracker.firebirdsql.org/browse/CORE-2650): Improve sorting performance when long VARCHARs are involved
Contributor(s): Dmitry Yemanov
## Bugfixes
* [CORE-6475](http://tracker.firebirdsql.org/browse/CORE-6475): Memory leak when running EXECUTE STATEMENT with named parameters
Contributor(s): Vlad Khorsun
* [CORE-6472](http://tracker.firebirdsql.org/browse/CORE-6472): Wrong byte order for UUIDs in gstat and monitoring output
Contributor(s): Dmitriy Sibiryakov
* [CORE-6460](http://tracker.firebirdsql.org/browse/CORE-6460): Incorrect query result when using named window
Contributor(s): Vlad Khorsun
* [CORE-6453](http://tracker.firebirdsql.org/browse/CORE-6453): EXECUTE STATEMENT fails on FB 4.x if containing time/timestamp with time zone parameters
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6450](http://tracker.firebirdsql.org/browse/CORE-6450): Races in the security databases cache could lead to the server crash
Contributor(s): Alex Peshkoff
* [CORE-6447](http://tracker.firebirdsql.org/browse/CORE-6447): Unexpectedly different text of message for parameterized expression starting from second run
Contributor(s): Vlad Khorsun
* [CORE-6441](http://tracker.firebirdsql.org/browse/CORE-6441): Srp plugin keeps connection after database has been removed for ~10 seconds
Contributor(s): Alex Peshkoff
* [CORE-6440](http://tracker.firebirdsql.org/browse/CORE-6440): Expression indexes containing COALESCE inside cannot be matched by the optimizer after migration from v2.5 to v3.0
Contributor(s): Dmitry Yemanov
* [CORE-6438](http://tracker.firebirdsql.org/browse/CORE-6438): ISQL: bad headers when text columns has >= 80 characters
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6437](http://tracker.firebirdsql.org/browse/CORE-6437): GFIX cannot set big value for page buffers
Contributor(s): Vlad Khorsun
* [CORE-6433](http://tracker.firebirdsql.org/browse/CORE-6433): Server could crash during a daily maintenance / set statistics index
Contributor(s): Alex Peshkoff
* [CORE-6432](http://tracker.firebirdsql.org/browse/CORE-6432): Possible buffer overflow in client library in Attachment::getInfo() call
Contributor(s): Alex Peshkoff
* [CORE-6427](http://tracker.firebirdsql.org/browse/CORE-6427): Whitespace as date separator causes conversion error
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6426](http://tracker.firebirdsql.org/browse/CORE-6426): Assertion when the batch is executed without a BLOB field
Contributor(s): Alex Peshkoff
* [CORE-6425](http://tracker.firebirdsql.org/browse/CORE-6425): Exception in client library in IAttachment::createBatch()
Contributor(s): Alex Peshkoff
* [CORE-6421](http://tracker.firebirdsql.org/browse/CORE-6421): Parameter in offset expression in LAG, LEAD, NTH_VALUE window functions requires explicit cast to BIGINT or INTEGER
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6419](http://tracker.firebirdsql.org/browse/CORE-6419): Truncation of strings to put in MON$ tables do not work correctly
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6415](http://tracker.firebirdsql.org/browse/CORE-6415): Error "malformed string' is raised instead of "expected: N, actual: M" when UTF-8 charset is used and default value is longer than the column length
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6414](http://tracker.firebirdsql.org/browse/CORE-6414): Error "expected length N, actual M" contains wrong value of M when UTF-8 charset is used in the field declaration
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6412](http://tracker.firebirdsql.org/browse/CORE-6412): Firebird was freezing when trying to manage users via triggers
Contributor(s): Alex Peshkoff
* [CORE-6408](http://tracker.firebirdsql.org/browse/CORE-6408): RETURNING clause in the MERGE statement cannot reference column in aliased target table using qualified reference (alias.column) if DELETE action present
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6403](http://tracker.firebirdsql.org/browse/CORE-6403): Some PSQL statements may lead to exceptions report wrong line/column
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6398](http://tracker.firebirdsql.org/browse/CORE-6398): Error converting string with hex representation of INTEGER to SMALLINT
Contributor(s): Alex Peshkoff
* [CORE-6397](http://tracker.firebirdsql.org/browse/CORE-6397): Message length error with COALESCE and TIME/TIMESTAMP WITHOUT TIME ZONE and WITH TIME ZONE
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6389](http://tracker.firebirdsql.org/browse/CORE-6389): Using binary string literal to assign to user-defined blob sub-types yield conversion error
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6387](http://tracker.firebirdsql.org/browse/CORE-6387): Client process was aborting due to bugs inside the ChaCha plugin
Contributor(s): Alex Peshkoff
* [CORE-6386](http://tracker.firebirdsql.org/browse/CORE-6386): ALTER SEQUENCE RESTART WITH <n> should not change the initial sequence START value
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6385](http://tracker.firebirdsql.org/browse/CORE-6385): Wrong line and column information after IF statement
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6379](http://tracker.firebirdsql.org/browse/CORE-6379): Bugcheck 179 (decompression overran buffer)
Contributor(s): Vlad Khorsun
* [CORE-6377](http://tracker.firebirdsql.org/browse/CORE-6377): Unable to restore database with tables using GENERATED ALWAYS AS IDENTITY columns
Contributor(s): Alex Peshkoff
* [CORE-6376](http://tracker.firebirdsql.org/browse/CORE-6376): IDENTITY column with explicit START WITH or INCREMENT BY starts with wrong value
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6357](http://tracker.firebirdsql.org/browse/CORE-6357): LEAD() and LAG() do not allow to specify 3rd argument of INT128 datatype
Contributor(s): Alex Peshkoff
* [CORE-6356](http://tracker.firebirdsql.org/browse/CORE-6356): ROUND() does not allow second argument >=1 when its first argument is more than MAX_BIGINT / 10
Contributor(s): Alex Peshkoff
* [CORE-6355](http://tracker.firebirdsql.org/browse/CORE-6355): TRUNC() does not accept second argument = -128 (but shows it as required boundary in error message)
Contributor(s): Alex Peshkoff
* [CORE-6353](http://tracker.firebirdsql.org/browse/CORE-6353): INT128 data type has problems with some PSQL objects
Contributor(s): Alex Peshkoff
* [CORE-6344](http://tracker.firebirdsql.org/browse/CORE-6344): Invalid return type for functions with INT128 / Numeric(38) argument
Contributor(s): Alex Peshkoff
* [CORE-6337](http://tracker.firebirdsql.org/browse/CORE-6337): Sub-type information is lost when calculating arithmetic expressions
Contributor(s): Alex Peshkoff
* [CORE-6336](http://tracker.firebirdsql.org/browse/CORE-6336): Error "Implementation of text subtype <NNNN> not located" on attempt to use some collations defined in fbintl.conf
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6335](http://tracker.firebirdsql.org/browse/CORE-6335): INSERT ... RETURNING does not require a SELECT privilege
Contributor(s): Dmitry Yemanov
* [CORE-6328](http://tracker.firebirdsql.org/browse/CORE-6328): FB4 Beta 2 may still be using the current date for TIME WITH TIME ZONE and extended wire protocol
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6325](http://tracker.firebirdsql.org/browse/CORE-6325): NTILE/RANK/PERCENT_RANK may cause problems in big/complex statements
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6318](http://tracker.firebirdsql.org/browse/CORE-6318): CAST('NOW' as TIME) raises a conversion error
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6316](http://tracker.firebirdsql.org/browse/CORE-6316): Unable to specify new 32KB page size in CREATE DATABASE statement
Contributor(s): Alex Peshkoff
* [CORE-6305](http://tracker.firebirdsql.org/browse/CORE-6305): Android port build failure
Contributor(s): Alex Peshkoff
* [CORE-6303](http://tracker.firebirdsql.org/browse/CORE-6303): Error writing to TIMESTAMP/TIME WITH TIME ZONE array
Contributor(s): Alex Peshkoff
* [CORE-6302](http://tracker.firebirdsql.org/browse/CORE-6302): Error writing an array of NUMERIC(24,6) to the database
Contributor(s): Alex Peshkoff
* [CORE-6084](http://tracker.firebirdsql.org/browse/CORE-6084): CREATE SEQUENCE START WITH has wrong initial value
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6023](http://tracker.firebirdsql.org/browse/CORE-6023): FB4 is unable to overwrite older ODS database
Contributor(s): Alex Peshkoff
* [CORE-5838](http://tracker.firebirdsql.org/browse/CORE-5838): Rotated trace files are locked by the engine
Contributor(s): Vlad Khorsun
* [CORE-4985](http://tracker.firebirdsql.org/browse/CORE-4985): A non-privileged user could implicitly count records in a restricted table
Contributor(s): Dmitry Yemanov
* [CORE-2274](http://tracker.firebirdsql.org/browse/CORE-2274): MERGE has a non-standard behaviour, accepts multiple matches
Contributor(s): Vlad Khorsun
# v4.0 Beta 2 (14-May-2020)
## New features
* [CORE-6287](http://tracker.firebirdsql.org/browse/CORE-6287): SET BIND OF type1 TO type2
Reference(s): [/doc/sql.extensions/README.set_bind.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.set_bind.md)
Contributor(s): Alex Peshkoff
* [CORE-6285](http://tracker.firebirdsql.org/browse/CORE-6285): SQL-level replication management
Reference(s): [/doc/README.replication.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/README.replication.md), [/doc/sql.extensions/README.ddl.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.ddl.txt)
Contributor(s): Dmitry Yemanov
* [CORE-6109](http://tracker.firebirdsql.org/browse/CORE-6109): Changed FLOAT to a SQL standard compliant FLOAT datatype
Reference(s): [/doc/sql.extensions/README.floating_point_types.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.floating_point_types.md)
Contributor(s): Mark Rotteveel
* [CORE-6018](http://tracker.firebirdsql.org/browse/CORE-6018): Make it possible to start multiple transactions (possibly in different attachments) using the same initial transaction snapshot
Reference(s): [/doc/README.transaction_at_snapshot.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/README.transaction_at_snapshot.md)
Contributor(s): Adriano dos Santos Fernandes
* [CORE-4933](http://tracker.firebirdsql.org/browse/CORE-4933): Add better transaction control to ISQL
Reference(s): [/doc/README.isql_enhancements.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/README.isql_enhancements.txt)
Contributor(s): Vlad Khorsun
* [CORE-3435](http://tracker.firebirdsql.org/browse/CORE-3435): Lateral derived tables
Reference(s): [/doc/sql.extensions/README.derived_tables.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.derived_tables.txt)
Contributor(s): Dmitry Yemanov
## Improvements
* [CORE-6286](http://tracker.firebirdsql.org/browse/CORE-6286): Make usage of TIMESTAMP/TIME WITH TIME ZONE convenient for users when appropriate ICU library is not installed on the client side
Reference(s): [/doc/sql.extensions/README.time_zone.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.time_zone.md), [/doc/sql.extensions/README.set_bind.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.set_bind.md)
Contributor(s): Alex Peshkoff
* [CORE-6279](http://tracker.firebirdsql.org/browse/CORE-6279): Put options in user management statements in any order
Reference(s): [/doc/sql.extensions/README.user_management](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.user_management)
Contributor(s): Alex Peshkoff
* [CORE-6278](http://tracker.firebirdsql.org/browse/CORE-6278): Efficient table scans for DBKEY-based range conditions
Contributor(s): Dmitry Yemanov
* [CORE-6274](http://tracker.firebirdsql.org/browse/CORE-6274): Increase parse speed of long queries
Note(s): Backported into v3.0.6
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6268](http://tracker.firebirdsql.org/browse/CORE-6268): Add methods to set various names (field, relation, etc.) in metadata builder
Reference(s): [/doc/Using_OO_API.html](https://github.com/FirebirdSQL/firebird/raw/master/doc/Using_OO_API.html)
Contributor(s): Alex Peshkoff
* [CORE-6239](http://tracker.firebirdsql.org/browse/CORE-6239): Procedures and EXECUTE BLOCK without RETURNS should not be allowed to use SUSPEND
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6237](http://tracker.firebirdsql.org/browse/CORE-6237): Performance problem when using SRP plugin
Note(s): Backported into v3.0.6
Contributor(s): Alex Peshkoff
* [CORE-6220](http://tracker.firebirdsql.org/browse/CORE-6220): Enable delivery of known to the client key to any connection to the server
Contributor(s): Alex Peshkoff
* [CORE-6219](http://tracker.firebirdsql.org/browse/CORE-6219): Add support for special (inf/nan) values when sorting DECFLOAT values
Contributor(s): Alex Peshkoff
* [CORE-6095](http://tracker.firebirdsql.org/browse/CORE-6095): Extend trace record for COMMIT/ROLLBACK RETAINING to allow chaining of transaction ids
Note(s): Backported into v3.0.6
Contributor(s): Vlad Khorsun
* [CORE-6069](http://tracker.firebirdsql.org/browse/CORE-6069): Show OS-specific error when entrypont is not found in dynamic library
Contributor(s): Alex Peshkoff
* [CORE-6058](http://tracker.firebirdsql.org/browse/CORE-6058): Change behavior of skipped and repeated wall times within time zones
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6049](http://tracker.firebirdsql.org/browse/CORE-6049): Builtin functions converting binary string to hexadecimal representation and vice versa
Reference(s): [/doc/sql.extensions/README.builtin_functions.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.builtin_functions.txt)
Contributor(s): Alex Peshkoff
* [CORE-6048](http://tracker.firebirdsql.org/browse/CORE-6048): Provide ability to see current state of DB encryption
Reference(s): [/doc/README.monitoring_tables](https://github.com/FirebirdSQL/firebird/raw/master/doc/README.monitoring_tables)
Contributor(s): Alex Peshkoff
* [CORE-6032](http://tracker.firebirdsql.org/browse/CORE-6032): Add DPB properties for time zone bind and decfloat configuration
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6017](http://tracker.firebirdsql.org/browse/CORE-6017): Add transaction info fb\_info\_tra\_snapshot\_number
Contributor(s): Vlad Khorsun
* [CORE-5658](http://tracker.firebirdsql.org/browse/CORE-5658): Execute statement with excess parameters
Reference(s): [/doc/sql.extensions/README.execute_statement2](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.execute_statement2)
Contributor(s): Vlad Khorsun
* [CORE-5538](http://tracker.firebirdsql.org/browse/CORE-5538): Add ability to backup/restore only those (several) tables which are enumerated as command line argument (pattern)
Reference(s): [/doc/README.gbak](https://github.com/FirebirdSQL/firebird/raw/master/doc/README.gbak)
Contributor(s): Dimitry Sibiryakov
* [CORE-4726](http://tracker.firebirdsql.org/browse/CORE-4726): Implement REcreate user <user_name> password <user_pwd>
Contributor(s): Alex Peshkoff
* [CORE-4579](http://tracker.firebirdsql.org/browse/CORE-4579): Distribute separate header files instead merged one
Contributor(s): Dimitry Sibiryakov
* [CORE-3983](http://tracker.firebirdsql.org/browse/CORE-3983): Ability to authenticate user in "EXECUTE STATEMENT ON EXTERNAL DATA SOURCE" by hash of the current password
Contributor(s): Alex Peshkoff
## Bugfixes
* [CORE-6290](http://tracker.firebirdsql.org/browse/CORE-6290): Hex number used at the end of statement may read invalid memory and produce wrong values or exceptions
Note(s): Backported into v3.0.6
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6283](http://tracker.firebirdsql.org/browse/CORE-6283): isNullable() in message metadata, returned by metadata builder, does not match with datatype set by setType() in metadata builder
Note(s): Backported into v3.0.6
Contributor(s): Alex Peshkoff
* [CORE-6282](http://tracker.firebirdsql.org/browse/CORE-6282): Change type of MON$ATTACHMENTS.MON$IDLE\_TIMER and MON$STATEMENTS.MON$STATEMENT\_TIMER to TIMESTAMP WITH TIME ZONE
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6281](http://tracker.firebirdsql.org/browse/CORE-6281): Invalid timestamp errors with RDB$TIME\_ZONE_UTIL.TRANSITIONS
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6280](http://tracker.firebirdsql.org/browse/CORE-6280): MERGE statement loses parameters in WHEN (NOT) MATCHED clause that will never be matched, crashes server in some situations
Note(s): Backported into v3.0.6
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6272](http://tracker.firebirdsql.org/browse/CORE-6272): Failed attach to a database is not traced
Contributor(s): Alex Peshkoff
* [CORE-6266](http://tracker.firebirdsql.org/browse/CORE-6266): Deleting records from MON$ATTACHMENTS using ORDER BY clause doesn't close the corresponding attachments
Note(s): Backported into v3.0.6
Contributor(s): Dmitry Yemanov
* [CORE-6265](http://tracker.firebirdsql.org/browse/CORE-6265): Mapping rules are destroyed by backup / restore
Note(s): Backported into v3.0.6
Contributor(s): Alex Peshkoff
* [CORE-6264](http://tracker.firebirdsql.org/browse/CORE-6264): GBAK with PIPE to stdout: invalid content if user '-se <host>:service_mgr' command switch
Note(s): Backported into v3.0.6
Contributor(s): Alex Peshkoff
* [CORE-6262](http://tracker.firebirdsql.org/browse/CORE-6262): SHOW DOMAIN/TABLE does not display character set of system objects
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6260](http://tracker.firebirdsql.org/browse/CORE-6260): Warnings are not always displayed in ISQL
Note(s): Backported into v3.0.6
Contributor(s): Alex Peshkoff
* [CORE-6254](http://tracker.firebirdsql.org/browse/CORE-6254): Server crashes when using SET TRANSACTION and ON TRANSACTION START trigger uses EXECUTE STATEMENT against current transaction
Note(s): Backported into v3.0.6
Contributor(s): Vlad Khorsun
* [CORE-6253](http://tracker.firebirdsql.org/browse/CORE-6253): Crash caused by the locked fb_lock file
Note(s): Backported into v3.0.6
Contributor(s): Vlad Khorsun
* [CORE-6252](http://tracker.firebirdsql.org/browse/CORE-6252): UNIQUE CONSTRAINT violation
Note(s): Backported into v3.0.6
Contributor(s): Vlad Khorsun
* [CORE-6251](http://tracker.firebirdsql.org/browse/CORE-6251): Crash when built-in function LEFT or RIGHT is missing its 2nd argument
Note(s): Backported into v3.0.6
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6250](http://tracker.firebirdsql.org/browse/CORE-6250): Signature mismatch when creating package body on identical packaged procedure header
Note(s): Backported into v3.0.6
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6248](http://tracker.firebirdsql.org/browse/CORE-6248): A number of errors when database name is longer than 255 symbols
Contributor(s): Alex Peshkoff
* [CORE-6243](http://tracker.firebirdsql.org/browse/CORE-6243): Regression: v4 Beta 1 rejects POSITION element of v2.5 defined SQL2003 CREATE TRIGGER syntax
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6241](http://tracker.firebirdsql.org/browse/CORE-6241): Values greater than number of days between 01.01.0001 and 31.12.9999 (=3652058) can be added or subtracted from DATE
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6238](http://tracker.firebirdsql.org/browse/CORE-6238): DECFLOAT: subtraction Num1 - Num2 leads to "Decimal float overflow" if Num2 is specified in scientific notation and less than max double (1.7976931348623157e308)
Contributor(s): Alex Peshkoff
* [CORE-6236](http://tracker.firebirdsql.org/browse/CORE-6236): RDB$TIME_ZONE_UTIL package has wrong privilege for PUBLIC
Contributor(s): Adriano dos Santos Fernandes, Dmitry Yemanov
* [CORE-6233](http://tracker.firebirdsql.org/browse/CORE-6233): Wrong dependencies of stored function on view after backup/restore
Note(s): Backported into v3.0.6
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6231](http://tracker.firebirdsql.org/browse/CORE-6231): Server crashes on shutdown of XNET connection to a local database when events have been registered
Note(s): Backported into v3.0.6
Contributor(s): Vlad Khorsun
* [CORE-6230](http://tracker.firebirdsql.org/browse/CORE-6230): Unable to connect with database if security.db reference is removed from databases.conf file
Note(s): Backported into v3.0.6
Contributor(s): Alex Peshkoff
* [CORE-6227](http://tracker.firebirdsql.org/browse/CORE-6227): isc\_info\_svc\_user\_dbpath always returns alias of main security database
Note(s): Backported into v3.0.6
Contributor(s): Alex Peshkoff
* [CORE-6224](http://tracker.firebirdsql.org/browse/CORE-6224): Server crash: re-destruction of the rem_port object
Note(s): Backported into v3.0.6
Contributor(s): Dmitry Kovalenko, Alex Peshkoff
* [CORE-6221](http://tracker.firebirdsql.org/browse/CORE-6221): Incorrect (throw-based) allocFunc for zlib1: memory leak is possible
Note(s): Backported into v3.0.6
Contributor(s): Alex Peshkoff
* [CORE-6218](http://tracker.firebirdsql.org/browse/CORE-6218): COUNT(DISTINCT <DECFLOAT_FIELD>) leads FB to crash when there are duplicate values of this field
Contributor(s): Alex Peshkoff
* [CORE-6217](http://tracker.firebirdsql.org/browse/CORE-6217): [inet.cpp] Dangerous work with pointer: delete ptr; ptr=new ;
Note(s): Backported into v3.0.6
Contributor(s): Dmitry Kovalenko, Alex Peshkoff
* [CORE-6214](http://tracker.firebirdsql.org/browse/CORE-6214): Update outdated tzdata version
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6212](http://tracker.firebirdsql.org/browse/CORE-6212): Authentication plugin on server may get garbage data from client instead empty packet
Contributor(s): Alex Peshkoff
* [CORE-6211](http://tracker.firebirdsql.org/browse/CORE-6211): Command "ISQL -X" can not extract ROLE name when use multi-byte charset for connection
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6208](http://tracker.firebirdsql.org/browse/CORE-6208): Grant lost in security.db after backup/restore cycle
Note(s): Backported into v3.0.6
Contributor(s): Alex Peshkoff
* [CORE-6207](http://tracker.firebirdsql.org/browse/CORE-6207): Modifications needed to complile Firebird.pas under FPC
Contributor(s): Alex Peshkoff
* [CORE-6206](http://tracker.firebirdsql.org/browse/CORE-6206): VARCHAR of insufficient length used for set bind of decfloat to varchar
Contributor(s): Vlad Khorsun
* [CORE-6205](http://tracker.firebirdsql.org/browse/CORE-6205): Generate proper error for UNION DISTINCT with more than 255 columns
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6186](http://tracker.firebirdsql.org/browse/CORE-6186): Original content of column which is involved into ENCRYPT() is displayed as distorted view after this call
Contributor(s): Alex Peshkoff
* [CORE-6181](http://tracker.firebirdsql.org/browse/CORE-6181): Operations when using "SET DECFLOAT BIND BIGINT,n" with result of 11+ digits, fail with "Decimal float invalid operation"
Contributor(s): Alex Peshkoff
* [CORE-6174](http://tracker.firebirdsql.org/browse/CORE-6174): ibase.h is missing from nightly builds
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6170](http://tracker.firebirdsql.org/browse/CORE-6170): Cannot install on CentOS 8 because version of LibTomMath and LibNCurses library
Contributor(s): Alex Peshkoff
* [CORE-6166](http://tracker.firebirdsql.org/browse/CORE-6166): Problems with long object names (> 255 bytes)
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6160](http://tracker.firebirdsql.org/browse/CORE-6160): SUBSTRING of non-text/-blob is described to return NONE character set in DSQL
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6159](http://tracker.firebirdsql.org/browse/CORE-6159): SUBSTRING SIMILAR is described with wrong data type in DSQL
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6130](http://tracker.firebirdsql.org/browse/CORE-6130): Creating backup to stdout using service manager is broken
Note(s): Backported into v3.0.6
Contributor(s): Alex Peshkoff
* [CORE-6116](http://tracker.firebirdsql.org/browse/CORE-6116): Metadata script extracted using ISQL of a database restored from a v2.5.9 backup is invalid when table has COMPUTED BY fields
Note(s): Backported into v3.0.6
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6110](http://tracker.firebirdsql.org/browse/CORE-6110): 64-bit transaction IDs are not stored properly in status vector
Contributor(s): Ilya Eremin
* [CORE-6080](http://tracker.firebirdsql.org/browse/CORE-6080): Attempt to drop existing user randomly fails with "336723990 : record not found for user"
Contributor(s): Vlad Khorsun
* [CORE-6071](http://tracker.firebirdsql.org/browse/CORE-6071): Restore of encrypted backup of database with SQL dialect 1 fails
Contributor(s): Alex Peshkoff
* [CORE-6061](http://tracker.firebirdsql.org/browse/CORE-6061): Building with --with-builtin-tommath doesn't work
Contributor(s): Alex Peshkoff
* [CORE-6056](http://tracker.firebirdsql.org/browse/CORE-6056): Overflow warnings when building some collations
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6046](http://tracker.firebirdsql.org/browse/CORE-6046): Incorrect time zone parsing reads garbage in memory
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6044](http://tracker.firebirdsql.org/browse/CORE-6044): ISQL issues with increased identifier length
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6034](http://tracker.firebirdsql.org/browse/CORE-6034): The original time zone should be set to the current time zone at routine invocation
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6033](http://tracker.firebirdsql.org/browse/CORE-6033): SUBSTRING(CURRENT_TIMESTAMP) does not work
Contributor(s): Adriano dos Santos Fernandes
* [CORE-6019](http://tracker.firebirdsql.org/browse/CORE-6019): Wire compression does not work without MSVC 2010 runtime installation
Contributor(s): Vlad Khorsun
* [CORE-5976](http://tracker.firebirdsql.org/browse/CORE-5976): GBAK multi-database file restore uses wrong minimum number of pages for first database file
Contributor(s): Mark Rotteveel
* [CORE-5972](http://tracker.firebirdsql.org/browse/CORE-5972): External engine trigger crashing server if table have computed field
Note(s): Backported into v3.0.6
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5957](http://tracker.firebirdsql.org/browse/CORE-5957): Bug in SIMILAR TO when adding numeric quantifier as bound for repetetion of expression leads to empty resultset
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5931](http://tracker.firebirdsql.org/browse/CORE-5931): SIMILAR TO does not return result when invalid pattern is used
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5892](http://tracker.firebirdsql.org/browse/CORE-5892): SQL SECURITY DEFINER context is not properly evaluated for monitoring tables
Contributor(s): Roman Simakov
* [CORE-5697](http://tracker.firebirdsql.org/browse/CORE-5697): Conversion from numeric literals to DECFLOAT adds precision that is not originally present
Contributor(s): Alex Peshkoff
* [CORE-5696](http://tracker.firebirdsql.org/browse/CORE-5696): Conversion from zero numeric literals to DECFLOAT results in incorrect value
Contributor(s): Alex Peshkoff
* [CORE-5691](http://tracker.firebirdsql.org/browse/CORE-5691): File description on Firebird executables should be specific
Contributor(s): Vlad Khorsun
* [CORE-5664](http://tracker.firebirdsql.org/browse/CORE-5664): SIMILAR TO is substantially (500-700x) slower than LIKE on trivial pattern matches with VARCHAR data
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5445](http://tracker.firebirdsql.org/browse/CORE-5445): Cannot install on Debian Stretch/Testing because version of LibTomMath library
Contributor(s): Alex Peshkoff
* [CORE-5364](http://tracker.firebirdsql.org/browse/CORE-5364): gfix -online normal <db> (executed in session #1) does not produce error when there is a SYSDBA-owned session #2
Note(s): Backported into v3.0.6
Contributor(s): Alex Peshkoff
* [CORE-4893](http://tracker.firebirdsql.org/browse/CORE-4893): SIMILAR-TO leads FB to crash when matching blob with size > 2Gb to a string literal
Contributor(s): Adriano dos Santos Fernandes
* [CORE-4874](http://tracker.firebirdsql.org/browse/CORE-4874): Infinite "SIMILAR TO" matching
Contributor(s): Adriano dos Santos Fernandes
* [CORE-4739](http://tracker.firebirdsql.org/browse/CORE-4739): Accent insensitive comparison: diacritical letters with DIAGONAL crossing stroke pass only test on EQUALITY to their non-accented forms
Contributor(s): Adriano dos Santos Fernandes
* [CORE-3858](http://tracker.firebirdsql.org/browse/CORE-3858): Very poor performance of SIMILAR TO on some arguments
Contributor(s): Adriano dos Santos Fernandes
* [CORE-3380](http://tracker.firebirdsql.org/browse/CORE-3380): Disable reading from the newly created BLOB
Contributor(s): Adriano dos Santos Fernandes
* [CORE-2251](http://tracker.firebirdsql.org/browse/CORE-2251): GBAK doesn't return error code
Note(s): Backported into v3.0.6
Contributor(s): Alex Peshkoff
# v4.0 Beta 1 (20-Feb-2019)
## New features
* [CORE-5990](http://tracker.firebirdsql.org/browse/CORE-5990): Pool of external connections
Reference(s): [/doc/sql.extensions/README.external_connections_pool](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.external_connections_pool)
Contributor(s): Vlad Khorsun
* [CORE-5970](http://tracker.firebirdsql.org/browse/CORE-5970): Built-in cryptographic functions
Reference(s): [/doc/sql.extensions/README.builtin_functions.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.builtin_functions.txt)
Contributor(s): Alex Peshkoff
* [CORE-5953](http://tracker.firebirdsql.org/browse/CORE-5953): Statement level read consistency in read-committed transactions
Reference(s): [/doc/README.read_consistency.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/README.read_consistency.md)
Contributor(s): Nickolay Samofatov, Roman Simakov, Vlad Khorsun
* [CORE-5951](http://tracker.firebirdsql.org/browse/CORE-5951): Add support of batch insert and update operations
Reference(s): [/doc/Using_OO_API.html](https://github.com/FirebirdSQL/firebird/raw/master/doc/Using_OO_API.html)
Contributor(s): Alex Peshkoff
* [CORE-5808](http://tracker.firebirdsql.org/browse/CORE-5808): Support backup of encrypted databases
Contributor(s): Alex Peshkoff
* [CORE-5768](http://tracker.firebirdsql.org/browse/CORE-5768): Implement FILTER-clause for aggregate functions
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5620](http://tracker.firebirdsql.org/browse/CORE-5620): Add builtin functions FIRST_DAY and LAST_DAY
Reference(s): [/doc/sql.extensions/README.builtin_functions.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.builtin_functions.txt)
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5536](http://tracker.firebirdsql.org/browse/CORE-5536): Connection compressed/encrypted status in MON$ATTACHMENTS table
Reference(s): [/doc/README.monitoring_tables](https://github.com/FirebirdSQL/firebird/raw/master/doc/README.monitoring_tables)
Contributor(s): Alex Peshkoff
* [CORE-2022](http://tracker.firebirdsql.org/browse/CORE-2022): Built-in logical replication
Reference(s): [/doc/README.replication.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/README.replication.md)
Contributor(s): Dmitry Yemanov
* [CORE-909](http://tracker.firebirdsql.org/browse/CORE-909): Ability to retrieve current UTC/GMT timestamp
Reference(s): [/doc/sql.extensions/README.time_zone.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.time_zone.md)
Contributor(s): Adriano dos Santos Fernandes
* [CORE-694](http://tracker.firebirdsql.org/browse/CORE-694): Support for time zones
Reference(s): [/doc/sql.extensions/README.time_zone.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.time_zone.md)
Contributor(s): Adriano dos Santos Fernandes
## Improvements
* [CORE-5973](http://tracker.firebirdsql.org/browse/CORE-5973): Handling FP overflow in DOUBLE PRECISION value when converting from DECFLOAT
Contributor(s): Alex Peshkoff
* [CORE-5954](http://tracker.firebirdsql.org/browse/CORE-5954): Garbage collection in intermediate record versions
Reference(s): [/doc/README.read_consistency.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/README.read_consistency.md)
Contributor(s): Nickolay Samofatov, Roman Simakov, Vlad Khorsun
* [CORE-5952](http://tracker.firebirdsql.org/browse/CORE-5952): Enhance restore performance of GBAK using batch API
Contributor(s): Alex Peshkoff
* [CORE-5948](http://tracker.firebirdsql.org/browse/CORE-5948): Make WIN_SSPI plugin produce keys for wirecrypt plugin
Note(s): Backported into v3.0.5
Contributor(s): Alex Peshkoff
* [CORE-5928](http://tracker.firebirdsql.org/browse/CORE-5928): Make it possible for AuthClient plugin to access authentication block from DPB
Note(s): Backported into v3.0.5
Contributor(s): Alex Peshkoff
* [CORE-5921](http://tracker.firebirdsql.org/browse/CORE-5921): Provide information about Global Commit Number, Commit Number of currently used database snapshot (if any) and Commit Numbers assigned to the committed transactions
Reference(s): [/doc/sql.extensions/README.builtin_functions.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.builtin_functions.txt)
Contributor(s): Vlad Khorsun
* [CORE-5887](http://tracker.firebirdsql.org/browse/CORE-5887): Allow the use of management statements in PSQL blocks
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5883](http://tracker.firebirdsql.org/browse/CORE-5883): Services version 1 cleanup
Contributor(s): Alex Peshkoff
* [CORE-5874](http://tracker.firebirdsql.org/browse/CORE-5874): Provide name of read-only column incorrectly referenced in UPDATE ... SET xxx
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5779](http://tracker.firebirdsql.org/browse/CORE-5779): Add support for riscv64
Contributor(s): Richard Jones
* [CORE-5770](http://tracker.firebirdsql.org/browse/CORE-5770): User who is allowed to manage other users must have this ability WITHOUT need to grant him RDB$ADMIN role
Contributor(s): Alex Peshkoff
* [CORE-5741](http://tracker.firebirdsql.org/browse/CORE-5741): Replace word "fixing" with "adjusting" in GBAK output
Note(s): Backported into v3.0.5
Contributor(s): Alex Peshkoff
* [CORE-5718](http://tracker.firebirdsql.org/browse/CORE-5718): Make TempCacheLimit setting database-wise
Contributor(s): Dmitry Yemanov
* [CORE-5705](http://tracker.firebirdsql.org/browse/CORE-5705): Store precision of DECFLOAT in RDB$FIELDS
Contributor(s): Alex Peshkoff
* [CORE-5647](http://tracker.firebirdsql.org/browse/CORE-5647): Increase number of formats/versions of views from 255 to 32K
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5606](http://tracker.firebirdsql.org/browse/CORE-5606): Add expression index name to exception message if computation failed
Contributor(s): Adriano dos Santos Fernandes
* [CORE-4529](http://tracker.firebirdsql.org/browse/CORE-4529): Allow to use index when GROUP BY on field which has DESCENDING index
Contributor(s): Dmitry Yemanov
* [CORE-4409](http://tracker.firebirdsql.org/browse/CORE-4409): Enhancement in precision of calculations with NUMERIC/DECIMAL
Contributor(s): Alex Peshkoff
* [CORE-3808](http://tracker.firebirdsql.org/browse/CORE-3808): Provide ability to return all columns using RETURNING clause
Reference(s): [/doc/sql.extensions/README.returning](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.returning)
Contributor(s): Adriano dos Santos Fernandes
## Bugfixes
* [CORE-5995](http://tracker.firebirdsql.org/browse/CORE-5995): Creator user name is empty in user trace sessions
Note(s): Backported into v3.0.5
Contributor(s): Vlad Khorsun
* [CORE-5993](http://tracker.firebirdsql.org/browse/CORE-5993): When creation of audit log file fails, there is no error message in firebird.log
Note(s): Backported into v3.0.5
Contributor(s): Vlad Khorsun
* [CORE-5991](http://tracker.firebirdsql.org/browse/CORE-5991): Trace could not work correctly with quoted file names in trace configurations
Note(s): Backported into v3.0.5
Contributor(s): Vlad Khorsun
* [CORE-5989](http://tracker.firebirdsql.org/browse/CORE-5989): iconv / libiconv 1.15 vs libc / libiconv_open | common/isc_file.cpp
Note(s): Backported into v3.0.5
Contributor(s): Alex Peshkoff
* [CORE-5986](http://tracker.firebirdsql.org/browse/CORE-5986): Incorrect evaluation of NULL IS [NOT] {FALSE | TRUE}
Note(s): Backported into v3.0.5
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5985](http://tracker.firebirdsql.org/browse/CORE-5985): Regression: ROLE does not passed in ES/EDS (specifying it in the statement is ignored)
Note(s): Backported into v3.0.5
Contributor(s): Alex Peshkoff
* [CORE-5982](http://tracker.firebirdsql.org/browse/CORE-5982): Error "read permission for BLOB field", when it's an input/output procedure's parameter
Note(s): Backported into v3.0.5
Contributor(s): Dmitriy Starodubov
* [CORE-5980](http://tracker.firebirdsql.org/browse/CORE-5980): Firebird crashes due to concurrent operations with expression indices
Note(s): Backported into v3.0.5
Contributor(s): Vlad Khorsun
* [CORE-5974](http://tracker.firebirdsql.org/browse/CORE-5974): Wrong result of select distinct with decfload/timezone/collated column
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5972](http://tracker.firebirdsql.org/browse/CORE-5972): External engine trigger crashing server if table have computed field
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5965](http://tracker.firebirdsql.org/browse/CORE-5965): FB3 optimizer chooses less efficient plan than FB2.5 optimizer
Note(s): Backported into v3.0.5
Contributor(s): Dmitry Yemanov
* [CORE-5959](http://tracker.firebirdsql.org/browse/CORE-5959): Firebird returns wrong time after changes of time zone
Note(s): Backported into v3.0.5
Contributor(s): Vlad Khorsun
* [CORE-5955](http://tracker.firebirdsql.org/browse/CORE-5955): Unable to init binreloc with ld >= 2.31
Note(s): Backported into v3.0.5
Contributor(s): Roman Simakov
* [CORE-5950](http://tracker.firebirdsql.org/browse/CORE-5950): Deadlock when attaching to bugchecked database
Note(s): Backported into v3.0.5
Contributor(s): Alex Peshkoff
* [CORE-5943](http://tracker.firebirdsql.org/browse/CORE-5943): Server crashes preparing a query with both DISTINCT/ORDER BY and non-field expression in the select list
Note(s): Backported into v3.0.5
Contributor(s): Dmitry Yemanov
* [CORE-5934](http://tracker.firebirdsql.org/browse/CORE-5934): gpre_boot fails to link using cmake, undefined reference 'dladdr' and 'dlerror'
Note(s): Backported into v3.0.5
Contributor(s): Alex Peshkoff
* [CORE-5930](http://tracker.firebirdsql.org/browse/CORE-5930): Bugcheck "incorrect snapshot deallocation - too few slots"
Contributor(s): Vlad Khorsun
* [CORE-5927](http://tracker.firebirdsql.org/browse/CORE-5927): With some non-standard authentication plugins providing correct crypt key wire anyway remains not encrypted
Note(s): Backported into v3.0.5
Contributor(s): Alex Peshkoff
* [CORE-5926](http://tracker.firebirdsql.org/browse/CORE-5926): Attempt to create mapping with non-ASCII user name which is encoded in SINGLE-BYTE codepage (WIN1251) leads to 'Malformed string' error
Note(s): Backported into v3.0.5
Contributor(s): Alex Peshkoff
* [CORE-5918](http://tracker.firebirdsql.org/browse/CORE-5918): Memory pool statistics is not accurate
Note(s): Backported into v3.0.5
Contributor(s): Alex Peshkoff
* [CORE-5907](http://tracker.firebirdsql.org/browse/CORE-5907): Regression: can not launch trace if its 'database' section contains regexp pattern with curvy brackets to enclose quantifier
Note(s): Backported into v3.0.5
Contributor(s): Alex Peshkoff
* [CORE-5896](http://tracker.firebirdsql.org/browse/CORE-5896): NOT NULL constraint is not synchronized after rename column
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5871](http://tracker.firebirdsql.org/browse/CORE-5871): Incorrect caching of the subquery result (procedure call) in independent queries
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5862](http://tracker.firebirdsql.org/browse/CORE-5862): Varchar computed column without explicit type does not populate RDB$CHARACTER_LENGTH
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5861](http://tracker.firebirdsql.org/browse/CORE-5861): GRANT OPTION is not checked for new object
Contributor(s): Roman Simakov
* [CORE-5855](http://tracker.firebirdsql.org/browse/CORE-5855): Firebird 4.0 cannot backup DB with generators which contains space in the names
Contributor(s): Alex Peshkoff
* [CORE-5800](http://tracker.firebirdsql.org/browse/CORE-5800): After backup/restore the indexes by expression on computed field are not working properly
Note(s): Backported into v3.0.5
Contributor(s): Dmitry Yemanov
* [CORE-5795](http://tracker.firebirdsql.org/browse/CORE-5795): ORDER BY clause on compound index may disable usage of other indices
Note(s): Backported into v3.0.5
Contributor(s): Dmitry Yemanov
* [CORE-5750](http://tracker.firebirdsql.org/browse/CORE-5750): Date-time parsing is very weak
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5728](http://tracker.firebirdsql.org/browse/CORE-5728): Field subtype of DEC_FIXED columns not returned by isc_info_sql_sub_type
Contributor(s): Alex Peshkoff
* [CORE-5726](http://tracker.firebirdsql.org/browse/CORE-5726): Unclear error message when inserting value exceeding max of DEC_FIXED decimal
Contributor(s): Alex Peshkoff
* [CORE-5717](http://tracker.firebirdsql.org/browse/CORE-5717): Reject non-constant date/time/timestamp literals
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5710](http://tracker.firebirdsql.org/browse/CORE-5710): Datatype declaration DECFLOAT without precision should use a default precision
Contributor(s): Alex Peshkoff
* [CORE-5700](http://tracker.firebirdsql.org/browse/CORE-5700): DECFLOAT underflow should yield zero instead of an error
Contributor(s): Alex Peshkoff
* [CORE-5699](http://tracker.firebirdsql.org/browse/CORE-5699): DECFLOAT should not throw exceptions when +/-NaN, +/-sNaN and +/-Infinity is used in comparisons
Contributor(s): Alex Peshkoff
* [CORE-5657](http://tracker.firebirdsql.org/browse/CORE-5657): Various UDF-related security vulnerabilities
Contributor(s): Alex Peshkoff
* [CORE-5646](http://tracker.firebirdsql.org/browse/CORE-5646): Parse error when compiling a statement causes memory leak until attachment is disconnected
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5639](http://tracker.firebirdsql.org/browse/CORE-5639): Mapping rule using WIN_SSPI plugin: windows user group conversion to firebird role does not work
Contributor(s): Alex Peshkoff
* [CORE-5637](http://tracker.firebirdsql.org/browse/CORE-5637): string right truncation on restore of security db
Contributor(s): Alex Peshkoff
* [CORE-5612](http://tracker.firebirdsql.org/browse/CORE-5612): Gradual slowdown of view operations (create, recreate or drop)
Contributor(s): Dmitry Yemanov
* [CORE-5611](http://tracker.firebirdsql.org/browse/CORE-5611): Higher memory consumption for prepared statements
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5593](http://tracker.firebirdsql.org/browse/CORE-5593): System function RDB$ROLE_IN_USE cannot take long role names
Contributor(s): Alex Peshkoff
* [CORE-5518](http://tracker.firebirdsql.org/browse/CORE-5518): Firebird UDF string2blob() may allow remote code execution
Contributor(s): Alex Peshkoff
* [CORE-5480](http://tracker.firebirdsql.org/browse/CORE-5480): SUBSTRING startposition smaller than 1 should be allowed
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5395](http://tracker.firebirdsql.org/browse/CORE-5395): Invalid data type for negation (minus operator)
Note(s): Backported into v3.0.5
Contributor(s): Adriano dos Santos Fernandes, Dmitry Yemanov
* [CORE-5118](http://tracker.firebirdsql.org/browse/CORE-5118): Indices on computed fields are broken after restore (all keys are NULL)
Note(s): Backported into v3.0.5
Contributor(s): Dmitry Yemanov
* [CORE-5070](http://tracker.firebirdsql.org/browse/CORE-5070): Compound index cannot be used for filtering in some ORDER/GROUP BY queries
Note(s): Backported into v3.0.5
Contributor(s): Dmitry Yemanov
* [CORE-1592](http://tracker.firebirdsql.org/browse/CORE-1592): Altering procedure parameters can lead to unrestorable database
Contributor(s): Adriano dos Santos Fernandes
# v4.0 Alpha 1 (23-Aug-2017)
## New features
* [CORE-5568](http://tracker.firebirdsql.org/browse/CORE-5568): SQL SECURITY feature
Reference(s): [/doc/sql.extensions/README.sql_security.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.sql_security.txt)
Contributor(s): Roman Simakov
* [CORE-5525](http://tracker.firebirdsql.org/browse/CORE-5525): Create high-precision floating point datatype named DECFLOAT
Reference(s): [/doc/sql.extensions/README.data_types](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.data_types)
Contributor(s): Alex Peshkoff
* [CORE-5488](http://tracker.firebirdsql.org/browse/CORE-5488): Timeouts for running SQL statements and idle connections
Reference(s): [/doc/README.session_idle_timeouts](https://github.com/FirebirdSQL/firebird/raw/master/doc/README.session_idle_timeouts), [/doc/README.statement_timeouts](https://github.com/FirebirdSQL/firebird/raw/master/doc/README.statement_timeouts)
Contributor(s): Vlad Khorsun
* [CORE-5463](http://tracker.firebirdsql.org/browse/CORE-5463): Support DEFAULT context value in INSERT, UPDATE, MERGE and UPDATE OR INSERT statements
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5449](http://tracker.firebirdsql.org/browse/CORE-5449): Support GENERATED ALWAYS identity columns and OVERRIDE clause
Reference(s): [doc/sql.extensions/README.identity_columns.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.identity_columns.txt)
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5346](http://tracker.firebirdsql.org/browse/CORE-5346): Named windows
Reference(s): [doc/sql.extensions/README.window_functions.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.window_functions.md)
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5343](http://tracker.firebirdsql.org/browse/CORE-5343): Allow particular DBA privileges to be transferred to regular users
Reference(s): [doc/sql.extensions/README.builtin_functions.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.builtin_functions.txt), [doc/sql.extensions/README.ddl](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.ddl.txt)
Contributor(s): Alex Peshkoff
* [CORE-3647](http://tracker.firebirdsql.org/browse/CORE-3647): Frames for window functions
Reference(s): [doc/sql.extensions/README.window_functions.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.window_functions.md)
Contributor(s): Adriano dos Santos Fernandes
* [CORE-2762](http://tracker.firebirdsql.org/browse/CORE-2762): New built-in function to check whether some role is implicitly active
Reference(s): [doc/sql.extensions/README.cumulative_roles.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.cumulative_roles.txt)
Contributor(s): Roman Simakov
* [CORE-1815](http://tracker.firebirdsql.org/browse/CORE-1815): Ability to grant role to another role
Reference(s): [doc/sql.extensions/README.cumulative_roles.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.cumulative_roles.txt)
Contributor(s): Roman Simakov
* [CORE-1688](http://tracker.firebirdsql.org/browse/CORE-1688): More ANSI SQL:2003 window functions (PERCENK_RANK, CUME_DIST, NTILE)
Reference(s): [doc/sql.extensions/README.window_functions.md](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.window_functions.md)
Contributor(s): Hajime Nakagami, Adriano dos Santos Fernandes
* [CORE-751](http://tracker.firebirdsql.org/browse/CORE-751): Implicitly active roles (and their permissions summarized)
Contributor(s): Roman Simakov
## Improvements
* [CORE-5431](http://tracker.firebirdsql.org/browse/CORE-5431): Support for DROP IDENTITY clause
Reference(s): [doc/sql.extensions/README.identity_columns.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.identity_columns.txt)
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5430](http://tracker.firebirdsql.org/browse/CORE-5430): Support for INCREMENT option in identity columns
Reference(s): [doc/sql.extensions/README.identity_columns.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.identity_columns.txt)
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5380](http://tracker.firebirdsql.org/browse/CORE-5380): Allow subroutines to call others subroutines and themself recursively
Reference(s): [doc/sql.extensions/README.subroutines.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.subroutines.txt)
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5238](http://tracker.firebirdsql.org/browse/CORE-5238): Replace xinetd support with the native listener
Contributor(s): Alex Peshkoff
* [CORE-5119](http://tracker.firebirdsql.org/browse/CORE-5119): Support autocommit mode in SET TRANSACTION statement
Contributor(s): Dmitry Yemanov
* [CORE-5064](http://tracker.firebirdsql.org/browse/CORE-5064): Add datatypes (VAR)BINARY(n) and BINARY VARYING(n) as aliases for (VAR)CHAR(n) CHARACTER SET OCTETS
Contributor(s): Dimitry Sibiryakov
* [CORE-4436](http://tracker.firebirdsql.org/browse/CORE-4436): Support for different hash algorithms in HASH system function
Reference(s): [doc/sql.extensions/README.builtin_functions.txt](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.builtin_functions.txt)
Contributor(s): Adriano dos Santos Fernandes
* [CORE-2557](http://tracker.firebirdsql.org/browse/CORE-2557): Grants on MON$ tables
Contributor(s): Alex Peshkoff
* [CORE-2216](http://tracker.firebirdsql.org/browse/CORE-2216): NBackup as online dump
Contributor(s): Roman Simakov, Vlad Khorsun
* [CORE-2192](http://tracker.firebirdsql.org/browse/CORE-2192): Extend maximum database page size to 32KB
Contributor(s): Dmitry Yemanov
* [CORE-2040](http://tracker.firebirdsql.org/browse/CORE-2040): Allow exception name and possibly exception text to be determined within a "WHEN ANY" error handling block
Reference(s): [doc/sql.extensions/README.context_variables](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.context_variables)
Contributor(s): Dmitry Yemanov
* [CORE-1132](http://tracker.firebirdsql.org/browse/CORE-1132): Exception context in PSQL exception handlers
Reference(s): [doc/sql.extensions/README.context_variables](https://github.com/FirebirdSQL/firebird/raw/master/doc/sql.extensions/README.context_variables)
Contributor(s): Dmitry Yemanov
* [CORE-749](http://tracker.firebirdsql.org/browse/CORE-749): Increase maximum length of object names to 63 characters
Contributor(s): Adriano dos Santos Fernandes
## Bugfixes
* [CORE-5545](http://tracker.firebirdsql.org/browse/CORE-5545): Wrong syntax with CREATE TRIGGER ... ON <table> used with POSITION
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5454](http://tracker.firebirdsql.org/browse/CORE-5454): INSERT into updatable view without explicit field list failed
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5408](http://tracker.firebirdsql.org/browse/CORE-5408): Result of boolean expression can not be concatenated with string literal
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5404](http://tracker.firebirdsql.org/browse/CORE-5404): Inconsistent column/line references when PSQL definitions return errors
Contributor(s): Adriano dos Santos Fernandes
* [CORE-5237](http://tracker.firebirdsql.org/browse/CORE-5237): Invalid handling of dot (.) and asterisk (*) in config file name and path for include clause
Contributor(s): Dimitry Sibiryakov
* [CORE-5223](http://tracker.firebirdsql.org/browse/CORE-5223): Double dots are prohibited in file names if access is restricted to a list of directories
Contributor(s): Dimitry Sibiryakov
* [CORE-5141](http://tracker.firebirdsql.org/browse/CORE-5141): Field definition allows several NOT NULL clauses
Contributor(s): Dimitry Sibiryakov
* [CORE-4985](http://tracker.firebirdsql.org/browse/CORE-4985): Non-privileged user can implicitly count records in a restricted table
Contributor(s): Dmitry Yemanov
* [CORE-4701](http://tracker.firebirdsql.org/browse/CORE-4701): Index and blob garbage collection don't take into accout data in undo log
Contributor(s): Dimitry Sibiryakov
* [CORE-4483](http://tracker.firebirdsql.org/browse/CORE-4483): Changed data not visible in WHEN-section if exception occured inside SP that has been called from this code
Contributor(s): Dimitry Sibiryakov
* [CORE-4424](http://tracker.firebirdsql.org/browse/CORE-4424): Rollback to wrong savepoint if several exception handlers on the same level are executed
Contributor(s): Dimitry Sibiryakov
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