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Updated the changelog
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‎CHANGELOG.md‎

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# v4.0 Release
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# v4.0.1
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## New features
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* [#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
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Contributor(s): Adriano dos Santos Fernandes
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## Improvements
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* [#6959](https://github.com/FirebirdSQL/firebird/issues/6959): Add IBatch::getInfo() method to the API
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Contributor(s): Alex Peshkoff
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* [#6954](https://github.com/FirebirdSQL/firebird/issues/6954): fb_info_protocol_version support
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Contributor(s): Alex Peshkoff
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* [#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
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Contributor(s): Alex Peshkoff
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* [#6915](https://github.com/FirebirdSQL/firebird/issues/6915): Allow attribute DISABLE-COMPRESSIONS in UNICODE collations
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Contributor(s): Adriano dos Santos Fernandes
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* [#6903](https://github.com/FirebirdSQL/firebird/issues/6903): Make it possible to create ICU-based collations with locales keywords
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Contributor(s): tkeinz, Adriano dos Santos Fernandes
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* [#6872](https://github.com/FirebirdSQL/firebird/issues/6872): Faster indexed STARTING WITH execution with UNICODE collations
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Contributor(s): Adriano dos Santos Fernandes
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* [#6810](https://github.com/FirebirdSQL/firebird/issues/6810): Use precise limit of salt length when signing messages and verifying the sign
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Contributor(s): Alex Peshkoff
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* [#6809](https://github.com/FirebirdSQL/firebird/issues/6809): Integer hex-literal support for INT128
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Contributor(s): Alex Peshkoff
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## Bugfixes
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* [#7070](https://github.com/FirebirdSQL/firebird/issues/7070): Error "BLOB is not found" while replication converts INSERT into UPDATE for a conflicting record
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Contributor(s): Dmitry Yemanov
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* [#7068](https://github.com/FirebirdSQL/firebird/issues/7068): Errors in the ChaCha plugin are displayed incorrectly
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Contributor(s): Alex Peshkoff
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* [#7067](https://github.com/FirebirdSQL/firebird/issues/7067): Deadlock when using not initialized security database
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Contributor(s): Alex Peshkoff
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* [#7066](https://github.com/FirebirdSQL/firebird/issues/7066): Server may send incorrect specific data to client when establishing encrypted connection
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Contributor(s): Alex Peshkoff
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* [#7065](https://github.com/FirebirdSQL/firebird/issues/7065): Connection hangs after delivery of 256GB of data
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Contributor(s): Alex Peshkoff
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* [#7064](https://github.com/FirebirdSQL/firebird/issues/7064): Linear regression functions aren't implemented correctly
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Contributor(s): Adriano dos Santos Fernandes
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* [#7062](https://github.com/FirebirdSQL/firebird/issues/7062): Creation of expression index does not release its statement correctly
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Contributor(s): Adriano dos Santos Fernandes
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* [#7060](https://github.com/FirebirdSQL/firebird/issues/7060): Deadlock when execute test for CORE-4337
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Contributor(s): Alex Peshkoff
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* [#7057](https://github.com/FirebirdSQL/firebird/issues/7057): Client-side positioned updates work wrongly with scrollable cursors
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Contributor(s): Dmitry Yemanov
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* [#7056](https://github.com/FirebirdSQL/firebird/issues/7056): Fetching from a scrollable cursor may overwrite user-specified buffer and corrupt memory
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Contributor(s): Dmitry Yemanov
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* [#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
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Contributor(s): Dmitry Yemanov
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* [#7048](https://github.com/FirebirdSQL/firebird/issues/7048): Incorrect releasing of user savepoint (older savepoints become inaccessible)
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Contributor(s): Dmitry Yemanov
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* [#7043](https://github.com/FirebirdSQL/firebird/issues/7043): Wrong message when user has no access to /tmp/firebird
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Contributor(s): Alex Peshkoff
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* [#7037](https://github.com/FirebirdSQL/firebird/issues/7037): Build problem when using both --with-builtin-tommath and --with-builtin-tomcrypt
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Contributor(s): Adriano dos Santos Fernandes
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* [#7034](https://github.com/FirebirdSQL/firebird/issues/7034): Server crashes while fetching from a scrollable cursor in PSQL
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Contributor(s): Dmitry Yemanov
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* [#7033](https://github.com/FirebirdSQL/firebird/issues/7033): Replicator is missing sanity checks for user-supplied blocks
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Contributor(s): Dmitry Yemanov
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* [#7018](https://github.com/FirebirdSQL/firebird/issues/7018): Problems with windows frames
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Contributor(s): Adriano dos Santos Fernandes
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* [#7015](https://github.com/FirebirdSQL/firebird/issues/7015): Replication applier code may crash if the specified block contains no savepoint operations
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Contributor(s): Dmitry Yemanov
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* [#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)
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Contributor(s): Roman Simakov
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* [#6995](https://github.com/FirebirdSQL/firebird/issues/6995): "String truncation error" is raised while restoring the database from a v2.5 backup
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Contributor(s): Dmitry Yemanov
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* [#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
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Contributor(s): Dmitry Yemanov
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* [#6985](https://github.com/FirebirdSQL/firebird/issues/6985): Application could hang when using new Batch API with blobs over XNET
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Contributor(s): Vlad Khorsun
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* [#6978](https://github.com/FirebirdSQL/firebird/issues/6978): Firebird 4 fails to build on big endian platforms
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Contributor(s): Alex Peshkoff
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* [#6976](https://github.com/FirebirdSQL/firebird/issues/6976): Lack of proper clean up after failure to initialize shared memory
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Contributor(s): Vlad Khorsun
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* [#6975](https://github.com/FirebirdSQL/firebird/issues/6975): Crash or hang while shutting down the replica database if segments are being applied
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Contributor(s): Dmitry Yemanov
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* [#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
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Contributor(s): Vlad Khorsun
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* [#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
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Contributor(s): Alex Peshkoff
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* [#6963](https://github.com/FirebirdSQL/firebird/issues/6963): The REFERENCES permission does not work
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Contributor(s): Alex Peshkoff
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* [#6955](https://github.com/FirebirdSQL/firebird/issues/6955): fb_info_creation_timestamp_tz returns a corrupted buffer
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Contributor(s): Vlad Khorsun
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* [#6945](https://github.com/FirebirdSQL/firebird/issues/6945): Segfault in the batch interface when gbak restores a database with many blobs over the wire
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Contributor(s): Alex Peshkoff
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* [#6935](https://github.com/FirebirdSQL/firebird/issues/6935): SQL SECURITY DEFINER has inconsistent behaviour if the object owner is non-privileged
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Contributor(s): Dmitry Yemanov
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* [#6935](https://github.com/FirebirdSQL/firebird/issues/6935): SQL SECURITY DEFINER does not affect the ownership of created DDL objects
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Contributor(s): Dmitry Yemanov
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* [#6930](https://github.com/FirebirdSQL/firebird/issues/6930): Segfault when calling cryptographic functions
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Contributor(s): Alex Peshkoff
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* [#6913](https://github.com/FirebirdSQL/firebird/issues/6913): Buffer overflows in getInfo APIs
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Contributor(s): Adriano dos Santos Fernandes
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* [#6909](https://github.com/FirebirdSQL/firebird/issues/6909): Some updates may crash Firebird server on the replica side
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Contributor(s): Dmitry Yemanov
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* [#6907](https://github.com/FirebirdSQL/firebird/issues/6907): Failed DDL commands can be replicated
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Contributor(s): Dmitry Yemanov
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* [#6900](https://github.com/FirebirdSQL/firebird/issues/6900): IBatch::add() method fails silently when a memory limit is exceeded
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Contributor(s): Alex Peshkoff
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* [#6893](https://github.com/FirebirdSQL/firebird/issues/6893): Problem with replication of BLOB segments longer than 32KB
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Contributor(s): Dmitry Yemanov
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* [#6887](https://github.com/FirebirdSQL/firebird/issues/6887): Invalid SIMILAR TO patterns may lead memory read beyond string limits
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Contributor(s): Adriano dos Santos Fernandes
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* [#6886](https://github.com/FirebirdSQL/firebird/issues/6886): Differerent interfaces behaviour depending upon source of interface
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Contributor(s): Alex Peshkoff
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* [#6887](https://github.com/FirebirdSQL/firebird/issues/6887): Significant performance regression of SIMILAR TO and SUBSTRING(SIMILAR) when pattern is taken from a variable
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Contributor(s): Adriano dos Santos Fernandes
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* [#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
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Contributor(s): Alex Peshkoff
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* [#6860](https://github.com/FirebirdSQL/firebird/issues/6860): Create user statement fails with SQLSTATE = HY000 when using DataTypeCompatibility
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Contributor(s): Alex Peshkoff
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* [#6856](https://github.com/FirebirdSQL/firebird/issues/6856): Permission error after replication of DDL commands
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Contributor(s): Dmitry Yemanov
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* [#6853](https://github.com/FirebirdSQL/firebird/issues/6853): Asynchronous replication leaks file handles
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Contributor(s): Dmitry Yemanov
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* [#6850](https://github.com/FirebirdSQL/firebird/issues/6850): Database-level and DDL triggers are executed at the replica side
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Contributor(s): Dmitry Yemanov
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* [#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)
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Contributor(s): Dmitry Yemanov
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* [#6848](https://github.com/FirebirdSQL/firebird/issues/6848): Generator values may not replicate after commit
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Contributor(s): Dmitry Yemanov
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* [#6845](https://github.com/FirebirdSQL/firebird/issues/6845): Result type of AVG over BIGINT column results in type INT128
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Contributor(s): Alex Peshkoff
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* [#6838](https://github.com/FirebirdSQL/firebird/issues/6838): Deleting multiple rows from a view with triggers may cause triggers to fire just once
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Contributor(s): Dmitry Yemanov
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* [#6832](https://github.com/FirebirdSQL/firebird/issues/6832): Segfault when using COMMIT RETAINING with Global Temporary Tables
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Contributor(s): Alex Peshkoff
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* [#6801](https://github.com/FirebirdSQL/firebird/issues/6801): Error recompiling a package with some combination of nested functions
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Contributor(s): Adriano dos Santos Fernandes
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# v4.0 Release (01-Jun-2021)
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## Improvements
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