Remove the unused dbug_print_rec() functions because they break
the clang build due to -Wreturn-stack-address

Add history row outside of compare_record() check. For TRX_ID
versioning we have to fail can_compare_record to force InnoDB update
which adds history row; and there in ha_innobase::update_row() is
additional "row changed" check where we force history row anyway.

MDEV-23644 Assertion on evaluating foreign referential action for self-reference in system versioned table

First part of the fix (row0mysql.cc) addresses external columns when adding history
row on referential action. The full data must be retrieved before the
row is inserted.

Second part of the fix (the rest) avoids duplicate primary key error between
the history row generated on referential action and the history row
generated by SQL command. Both command and referential action can
happen on same table since foreign key can be self-reference (parent
and child tables are same). Moreover, the self-reference can refer
multiple rows when the key is non-unique. In such case history is
generated by referential action occured on first row but processed all
rows by a matched key. The second round is when the next row is
processed by a command but history already exists. In such case we
check TRX_ID of existing history row and if it is the same we assume
the above situation and skip adding one more history row or failing
the command.

First part (row0mysql.cc) fixes ins_node_set_new_row() usage workflow
as it is designed to operate on empty row (see row_get_prebuilt_insert_row()
for example).

Second part (row0ins.cc) fixes duplicate key error in FTS_DOC_ID_INDEX
since history rows must not generate entries in that index. We detect
FTS_DOC_ID_INDEX by a number of attributes and skip it if the row is
historical.

Misc fixes:

row_build_index_entry_low() does not accept non-NULL tuple
for FTS index (subject assertion fails), assertion (index->type !=
DICT_FTS) adds code understanding.

Now as historical_row is copied in row_update_vers_insert() there is
no need to copy the row twice: ROW_COPY_POINTERS is used to build
historical_row initially.

dbug_print_rec() debug functions.

MDEV-22178 Assertion `info->alias.str' failed in partition_info::check_partition_info instead of ER_VERS_WRONG_PARTS

Assign create_info->alias for ALTER TABLE since it is NULL and later
accessed for printing error message.

ip_len has a different meaning on AIX so we use a
different variable name here not to conflict.

Backport from MDEV-20178 2f5d3724

MDEV-22740: UBSAN: sql/opt_split.cc:1150:28: runtime error: shift exponent 61 is too large for 32-bit type 'int' (on optimized builds)

Use a ulonglong instead of uint when left shifting to calculate the table map for all the tables in a query

This reverts commit bc2dc83c.

feedback plugin now fakes a SHOW command to force
create_schema_table() to instantiate the table at once,
not lazily.

The test from plugins.feedback_plugin_send applies.

Caused by e64084d5

MDEV-19273: Server crash in MDL_ticket::has_stronger_or_equal_type or Assertion `thd->mdl_context.is_lock_owner(MDL_key::TABLE, table->db.str, table->table_name.str, MDL_SHARED)' failed in mysql_rm_table_no_locks

Early report error in case of DROP SEQUENCE <non-sequence>

Do not use error variable for other purposes except error.

Closes PR #1649

Post-push Windows compilation errors fix.

Change thd->mdl_context.release_transactional_locks() to
thd->mdl_release_transactional_locks()

row_undo_ins_parse_undo_rec(): Do not try to read non-existing
virtual column information for the metadata record.

The new option --log-innodb-page-corruption is introduced.

When this option is set, backup is not interrupted if innodb corrupted
page is detected. Instead it logs all found corrupted pages in
innodb_corrupted_pages file in backup directory and finishes with error.

For incremental backup corrupted pages are also copied to .delta file,
because we can't do LSN check for such pages during backup,
innodb_corrupted_pages will also be created in incremental backup
directory.

During --prepare, corrupted pages list is read from the file just after
redo log is applied, and each page from the list is checked if it is allocated
in it's tablespace or not. If it is not allocated, then it is zeroed out,
flushed to the tablespace and removed from the list. If all pages are removed
from the list, then --prepare is finished successfully and
innodb_corrupted_pages file is removed from backup directory. Otherwise
--prepare is finished with error message and innodb_corrupted_pages contains
the list of the pages, which are detected as corrupted during backup, and are
allocated in their tablespaces, what means backup directory contains corrupted
innodb pages, and backup can not be considered as consistent.

For incremental --prepare corrupted pages from .delta files are applied
to the base backup, innodb_corrupted_pages is read from both base in
incremental directories, and the same action is proceded for corrupted
pages list as for full --prepare. innodb_corrupted_pages file is
modified or removed only in base directory.

If DDL happens during backup, it is also processed at the end of backup
to have correct tablespace names in innodb_corrupted_pages.

The reason for the failure is that
thd->mdl_context.release_transactional_locks()
was called after commit & rollback even in cases where the current
transaction is still active.

For 10.2, 10.3 and 10.4 the fix is simple:
- Replace all calls to thd->mdl_context.release_transactional_locks() with
  thd->release_transactional_locks(). The thd function will only call
  the mdl_context function if there are no active transactional locks.
  In 10.6 we will better fix where we will change the return value for
  some trans_xxx() functions to indicate if transaction did close the
  transaction or not. This will avoid the need of the indirect call.

Other things:
- trans_xa_commit() and trans_xa_rollback() will automatically
  call release_transactional_locks() if the transaction is closed.
- We can't do that for the other functions as the caller of many of these
  are doing additional work (like close_thread_tables) before calling
  release_transactional_locks().
- Added missing abort_result_set() and missing DBUG_RETURN in
  select_create::send_eof()
- Fixed wrong indentation in injector::transaction::commit()

MDEV-21265: IN predicate conversion to IN subquery should be allowed for a broader set of datatype comparison

Allow materialization strategy when collations on the
inner and outer sides of an IN subquery are the same and the
character set of the inner side is a proper subset of the character
set on the outer side.
This allows conversion from utf8mb3 to utf8mb4
as the former is a subset of the later.
This is only allowed when IN predicate is converted to an IN subquery

Backported part of the patch (d6a00d9b) of MDEV-17905.

Reviewed by:serg@mariadb.com

disable thd->count_cuted_fields when populating internal temporary
tables for I_S, because this is how SELECT works standalone.
And if the SELECT is a part of INSERT or UPDATE or RETURN or SET or
anything else that enables thd->count_cuted_fields, this counting should
only apply when storing the result of the SELECT in a field or a
variable, not when populating internal temporary tables for I_S.

This is a fixup patch for MDEV-23991 afc9d00c

We really should read result.n_leaf_pages, which was set previously.

Analysis and fix was provided by Jukka Santala. Thanks!

Reviewed by: Marko Mäkelä

The nonnull attribute is not applicable to parameters that are
passed by reference, at least not in the Intel compiler.
Let us remove the reference indirection, which was only there
so that the pointer could be assigned to NULL, and let the
callers perform that task.

row_log_allocate(): Fix a bug in out-of-memory error handling
that would leave a pointer to freed memory.

Prior to this patch, it is possible to access freed memory
(THD::event_scheduler) from tp_post_kill_notification().

With this patch, memory is freed only when THD is no more accessible
from other threads, i.e after it is removed from the thread_list.

The idea of this fix is that it's enough to prevent the
next_auto_inc_val from incrementing if an error, to fix this problem
and also the MDEV-17333.
So this patch basically reverts the existing fix to the MDEV-17333.

In galera_3nodes.galera_safe_to_bootstrap node restart can happen too soon, when earlier SST joiner process is still active in the node.
Similar issue may hurt other mtr tests as well.

This is second variant of fix for this issue. Here we only change rsync SST script to wait a little bit if lingering SST rsync is observed to be in execution.
We assume that the previous mysqld and SST processes have been already signaled to abort during earlier stataup attempt.

If other SST methods (than rsync) suffer from similar overlapping SST execution, they should be sorted out separately within each SST method handler scripts.
Reviewed-by: Jan Lindström <jan.lindstrom@mariadb.com>

Add test case

A bogus error message was issued when a condition was pushed into a
materialized derived table or view specified as union of selects with
aggregation when the corresponding columns of the selects had different
names. This happened because the expression pushed into having clauses of
the selects was adjusted for the names of the first select of the union.
The easiest solution was to rename the columns of the other selects to be
name compatible with the columns of the first select.

Approved by Oleksandr Byelkin <sanja@mariadb.com>

Explicitly setting encoding to UTF-8 when writing to file and
replacing wide characters from MTR_RES_FAILED when writing to
XML file. The wide characters are not allowed in XML.

FindBlockX::operator(): Return false if an x-latched block is found.
Previously, we were incorrectly returning false if the block was in
the log, only if not x-latched.

It is unknown if this mistake had any visible impact. Often,
we would register both MTR_MEMO_BUF_FIX and MTR_MEMO_PAGE_X_FIX
for the same block.

           in TABLE_LIST::is_recursive_with_tables

After the patch for MDEV-23619 the code of st_select_lex::cleanup started
using the list st_select_lex::leaf_tables. This list is built for any
query with FROM clause in the function setup_tables(). If such query is
used in a stored procedure it must be ensured that the list is empty
before each new call of the procedure. Otherwise if the first call of
the procedure is successful while the second call reports an error before
the setup_tables() is invoked then list st_select_lex::leaf_tables would
point to a piece of memory that has been already freed.

Approved by Oleksandr Byelkin <sanja@mariadb.com>

Add wait_condition.