April to August 2021

April

• Fixed bug CORE-6531 : COMPUTED BY column looses charset and collate of source field <F> when <F> is either of type BLOB or VARCHAR casted to BLOB.
• Fixed bug CORE-6532 : Results of сoncatenation with blob has no info about collation of source columns (which are declared with such info)
• Fixed XNET protocol after recent changes.
• Fixed wrong sync used after write failure.
• Added missing sync to the CCH_forget_page().
• Fixed bug CORE-6003 : RDB$GET_TRANSACTION_CN works different in Super and Classic
• Additional patch for CORE-6015 : Segfault when using expression index with complex expression
• Changed way to detect indirect recursion: when req_caller chain is broken by EXECUTE STATEMENT.
• Allow to cancel statement\attachment when it is waiting on LCK_record_gc lock.
• Merge pull request #311 from FirebirdSQL/TempTableDirectory
• Merge pull request #314 from FirebirdSQL/core-5515
• Attempt to fix Travis build on Xenial Linux Fixed bug 6777 : AV when engine shut down and cancels attachment that is waiting in lock manager.
• Fixed bug GH-6782 : Getting "records fetched" for functions/procedures in trace.

• Fixed bug CORE-6531 : COMPUTED BY column looses charset and collate of source field <F> when <F> is either of type BLOB or VARCHAR casted to BLOB.
• Fixed bug CORE-6532 : Results of сoncatenation with blob has no info about collation of source columns (which are declared with such info)
• Fixed XNET protocol after recent changes.
• Fixed wrong sync used after write failure.
• Added missing sync to the CCH_forget_page().
• Backport from master reworked fix for CORE-6015 : Segfault when using expression index with complex expression.
• Additional patch for CORE-6015 : Segfault when using expression index with complex expression.
• Changed way to detect indirect recursion: when req_caller chain is broken by EXECUTE STATEMENT.
• Allow to cancel statement\attachment when it is waiting on LCK_record_gc lock.
• Backport fix for bug GH-6777 : AV when engine shut down and cancels attachment that is waiting in lock manager.
• Fixed bug GH-6782 : Getting "records fetched" for functions/procedures in trace.
• This should fix bug GH-6781 : Crashing process hangs (UDF exception). Another attempt to fix bug GH-6781 : Crashing process hangs (UDF exception).

May

• Fixed bug GH-6785 : problem when restoring the database firebird 4 rc1 4.0.0.2353
• Improvement GH-6748 : Freeing a statement using DSQL_drop or DSQL_unprepare should send free packet immediately [CORE6519] 
• Fixed bugs GH-3106 : Many indexed reads in a compound index with NULLs [CORE2709]
• Fixed bugs GH-3810 : Wrong or missing IS NULL optimization (regression) [CORE3449]
• Fixed bug GH-6781 : Crashing process hangs (UDF exception).
• Fixed bug #6802 : When the statement timeout is set, it causes the lock manager to delay reporting deadlocks until timeout is expired

• Next attempt to fix bug GH-6781 : Crashing process hangs (UDF exception).
• Improvement GH-6748 : Freeing a statement using DSQL_drop or DSQL_unprepare should send free packet immediately [CORE6519]

June

• Fixed bug GH-6866 : Some orphan records left at RDB$SECURITY_CLASSES and RDB$USER_PRIVILEGES after DROP PROCEDURE\FUNCTION
• Fixed few inconsistencies introduced when VIO_erase() started to use update in place:
  - GC thread\sweeper ignores deleted records with no backversions, that should be cleaned up,
  - VIO_erase wrongly increments number of deleted records in case of failure (lock conflict, etc),
  - missing notification of GC thread in VIO_erase().

• Fixed bug GH-6866 : Some orphan records left at RDB$SECURITY_CLASSES and RDB$USER_PRIVILEGES after DROP PROCEDURE\FUNCTION
• Fixed few inconsistencies introduced when VIO_erase() started to use update in place:
  - GC thread\sweeper ignores deleted records with no backversions, that should be cleaned up,
  - VIO_erase wrongly increments number of deleted records in case of failure (lock conflict, etc),
  - missing notification of GC thread in VIO_erase().
• Fixed memory leak found by Jiří, see "Memory leak with external engine plugin" in fb-devel

• Fixed bug GH-6866 : Some orphan records left at RDB$SECURITY_CLASSES and RDB$USER_PRIVILEGES after DROP PROCEDURE\FUNCTION work/gh-6843
• Fixed bug GH-6843 : Crash when UDR is used by system attachment, for ex. Garbage Collector

July

• Correction for my old commit (AV detected by tests bugs.core_3323, bugs.core_5645 and bugs.core_5972)
• Fixed memory leak found by Jiří, see "Memory leak with external engine plugin" in fb-devel
• Fixed tiny memory leak.
• Fixed incorrect pools usage leading to memory leaks.
• Make sure Engine instance is not destroyed before SharedXXX objects, that uses pointer on Engine in own dtor's.
• Also, plugins (i.e. Engine) must be released via Plugin Manager, not directly.
• Postfix (incorrect pools usage leading to memory leaks).

• Fixed tiny memory leak.
• Fixed incorrect pools usage leading to memory leaks.
• Make sure Engine instance is not destroyed before SharedXXX objects, that uses pointer on Engine in own dtor's.
  Also, plugins (i.e. Engine) must be released via Plugin Manager, not directly.
• Correction for my old commit (AV detected by tests bugs.core_3323, bugs.core_5645 and bugs.core_5972)
• Postfix (incorrect pools usage leading to memory leaks).

• Backported PR168 and PR294
• Backport fixes for memory leaks found by Jiří, see "Memory leak with external engine plugin" in fb-devel
• Make sure Engine instance is not destroyed before SharedXXX objects, that uses pointer on Engine in own dtor's.
  Also, plugins (i.e. Engine) must be released via Plugin Manager, not directly.
• Backport one more fix against memory leak in UDR

August

• Frontported additional patch for #6027 : Installation of Firebird 3.0.3 on SLES 12 SP3 fails with ''Could not find acceptable ICU library".
• Fixed bug #6918 : Service detach is always traced
• Follow Alex commit de15522f (Fixed #6886: Different interfaces behavior depending upon source of interface). This should fix numerous crashes shown by fb-tests
• Merge pull request #6938 from red-soft-ru/4_0_drop_gtt_fix

• Additional patch for #6027 : Installation of Firebird 3.0.3 on SLES 12 SP3 fails with ''Could not find acceptable ICU library". This should fix build on Ubuntu 18
• Another attempt to fix a build on Ubuntu 18
• Fixed build on Alpine Linux.
• Added tests for presence of dlinfo() and its options on building host.
• Fixed bug #6918 : Service detach is always traced
• Merge pull request #6938 from red-soft-ru/4_0_drop_gtt_fix

• Fixed bug #6918 : Service detach is always traced
•  Merge pull request #6938 from red-soft-ru/4_0_drop_gtt_fix