MDEV-21490: binlog tests fail with valgrind: Conditional jump or move depends on uninitialised value in sql_ex_info::init

Problem:
=======
P1) Conditional jump or move depends on uninitialised value(s)
    sql_ex_info::init(char const*, char const*, bool) (log_event.cc:3083)

code: All the following variables are not initialized.
----
  return ((cached_new_format != -1) ? cached_new_format :
    (cached_new_format=(field_term_len > 1 || enclosed_len > 1 ||
    line_term_len > 1 || line_start_len > 1 || escaped_len > 1)));

P2) Conditional jump or move depends on uninitialised value(s)
    Rows_log_event::Rows_log_event(char const*, unsigned
      int, Format_description_log_event const*) (log_event.cc:9571)

Code: Uninitialized values is reported for 'var_header_len' variable.
----
  if (var_header_len < 2 || event_len < static_cast<unsigned
      int>(var_header_len + (post_start - buf)))

P3) Conditional jump or move depends on uninitialised value(s)
    Table_map_log_event::pack_info(Protocol*) (log_event.cc:11553)

code:'m_table_id' is uninitialized.
----
  void Table_map_log_event::pack_info(Protocol *protocol)
  ...
  size_t bytes= my_snprintf(buf, sizeof(buf), "table_id: %lu (%s.%s)",
                              m_table_id, m_dbnam, m_tblnam);

Fix:
===
P1 - Fix)
Initialize cached_new_format,field_term_len, enclosed_len, line_term_len,
line_start_len, escaped_len members in default constructor.

P2 - Fix)
"var_header_len" is initialized by reading the event buffer. In case of an
invalid event the buffer will contain invalid data. Hence added a check to
validate the event data. If event_len is smaller than valid header length
return immediately.

P3 - Fix)
'm_table_id' within Table_map_log_event is initialized by reading data from
the event buffer. Use 'VALIDATE_BYTES_READ' macro to validate the current
state of the buffer. If it is invalid return immediately.

this test needs a *server* and tries to connect with $MYSQL to it

PCRE reports small frame size working with ASAN, so the test has to be ready
for the minimlas possible size.

This is the only symlink in the repository. Symlinks can cause
trouble when using file systems or operating systems that do not
support them.

Also remove the unused file DartConfig.cmake that refers to the script.

cmake -DWITH_INNODB_EXTRA_DEBUG:BOOL=ON
was broken ever since commit 8777458a
(MDEV-6076 Persistent AUTO_INCREMENT for InnoDB).

There is a race condition between page reads that call
page_zip_validate() (while holding clustered index root page S-latch)
and writes that update PAGE_ROOT_AUTO_INC
(with buf_block_t::lock SX-latch, compatible with S-latch).

page_zip_validate_low(): Skip the PAGE_ROOT_AUTO_INC field on
clustered index root pages in order to avoid false positives.

Post-push fix. aria_pack_mdev14183 test is unstable.

The fix is the following:
1. Disable the test for embedded server.
2. Create non-"transactional" Aria table in the test, as aria_pack does not
support "transactional" Aria tables.

tests for --ssl-verify-server-cert with system CA
and with incorrect hostname

MDEV-21249 MariaDB 10.3.10 When referring to bigint to generate timestamp data in the virtual generated column, the value of the generated column does not change when the time zone changes

FROM_UNIXTIME() depends on @@time_zone, so it's VCOL_SESSION_FUNC

Column definition order in st_maria_share::columndef can differ from
order of fields in record(see also st_maria_share::column_nr,
st_maria_columndef::column_nr, _ma_column_nr_write(),
_ma_column_nr_read()). This was not taken into account in aria_pack
tool.

The fix is to initialize elements of HUFF_COUNTS array in the correct
order.

Setting "streamfmt=mbstream" in the "[sst]" section causes SST to fail
because the format automatically switches to 'tar' by default (insead
of mbstream).

To fix this, we need to add mbstream to the list of valid values for
the format, making it synonymous with xbstream. This must be done both
in the SST script and when parsing the options of the corresponding
utilities.

Add wait conditions to make sure correct number of rows have
been replicated.

If the initialization of the wsrep provider failed, in some
cases the internal variable wrep_inited indicating that the
initialization has already been completed is still set to
"1", which then leads to confusion in the initialization
status. To solve the problem, we should set this variable
to "1" only if the wsrep provider initialization really
completed successfully.

An earlier issue has already been fixed for branch 10.4,
and this patch contains a fix for earlier versions (where
Galera 3.x is used).

test case only

The only change is a change of the version number.
In MySQL 5.6.46, the copyright comments in a number of files were changed
in mysql/mysql-server@f1a006ece7521cb02f9b961e6fad04d12ddfbab3
but there was no functional change to InnoDB code.
This was also reflected by XtraDB. We are not changing the copyright
comments in MariaDB Server for now.

Between MySQL 5.6.46 and 5.6.47, InnoDB was not changed at all.

Actually, we had forgotten to update the InnoDB version number to
5.6.46. With this change, we are updating InnoDB
from 5.6.45 to 5.6.47 and XtraDB from 5.6.45-86.1 to 5.6.46-86.2.

- Fixed a warning visible in optimized build related to calling
memcpy with length parameters larger than ptrdiff_t max.

rb#23333 approved by Annamalai Gurusami <annamalai.gurusami@oracle.com>

IndexPurge::next(): Replace btr_pcur_move_to_next_user_rec()
with some equivalent code that performs sanity checks without
killing the server. Perform some additional sanity checks as well.

This change is motivated by
mysql/mysql-server@48de4d74f4d2f10cd01b129753c7dfa908cf36b5
which unnecessarily introduces storage overhead to btr_pcur_t
and uses a test case that injects a fault somewhere else,
not in the code path that was modified.

MySQL 5.7.29 includes the following fix:
Bug #30287668 INNODB: A LONG SEMAPHORE WAIT
mysql/mysql-server@5cdbb22b51cf2b35dbdf5666a251ffbec2f84dec

There is no test case. It seems that the problem could occur when
a spatial index is large and peculiar enough so that multiple R-tree
leaf pages will have the exactly same maximum bounding rectangle (MBR).

The commit message suggests that the hang can occur when R-tree
non-leaf pages are being merged, which should only be possible
during transaction rollback or the purge of transaction history,
when the R-tree index is at least 2 levels high and very many records
are being deleted. The message says that a comparison result that two
spatial index node pointer records are equal will cause an infinite loop
in rtr_page_copy_rec_list_end_no_locks(). Hence, we must include the
child page number in the comparison to be consistent with
mysql/mysql-server@2e11fe0e152e34d73579e1a9ec19aedc3f6010f6.

We fix this bug in a simpler way, involving fewer code changes.

cmp_rec_rec(): Renamed from cmp_rec_rec_with_match().
Assert that rec2 always resides in an index page.
Treat non-leaf spatial index pages specially.

Now that we will be invoking dtuple_get_n_ext() instead of
letting btr_push_update_extern_fields() update an already
calculated value, it is unnecessary to calculate the n_ext
upfront.

row_rec_to_index_entry(), row_rec_to_index_entry_low():
Remove the output parameter n_ext.