Prior to patch, get_password would echo multple mask characters '*', for
a single multibyte input character.

Fixed the behavior by using "wide" version of getch, _getwch.
Also take care of possible characters outside of BMP (i.e we do not print
'*' for high surrogates).

The function will now internally construct the "wide" password string,
and conver to the console codepage. Some characters could still be lost
in that conversion, unless the codepage is utf8, but this is not any new
bug.

and galera_3nodes.galera_ipv6_mariabackup_section
until their corresponding MDEV's are fixed.

They fail almost everywhere.

SQL statments could have table entries added in lexer. This entries
should not invalidate `next_global` member.
Reviewed-by: Jan Lindström <jan.lindstrom@mariadb.com>

- Addressing the format issue in deferred_dblwr() and changed the
function comment.

  InnoDB fails to identify the deferred tablespace after recovery.
Problem is that InnoDB fails to rename the tablespace present
in recovered tablespace. Fix is that InnoDB should try to rename the
recovered tablespace when tablespace is being deferred

  This patch reverts the commit cab8f4b5.
InnoDB fails to restore page0 from doublewrite buffer when the
tablespace is being deferred. In that case, InnoDB doesn't find
INIT_PAGE redo log record for page0 and it leads to failure.
InnoDB should recovery page0 from doublewrite buffer for the
deferred tablespace before applying the redo log records.

Added deferred_dblwr() to restore page0 of deferred tablespace
from doublewrite buffer

In commit 49e2c8f0 (MDEV-25743)
some more use of the printf-style format "%.*s" was added.
The length parameter is of type int, not size_t.
On 64-bit platforms that follow the LLP64 convention (such as
64-bit Microsoft Windows), sizeof(int)==4 and sizeof(size_t)==8.

Let us explicitly cast the lengths to the correct type in order
to avoid any trouble.

[Adjusting Sergei Krivonos's patch]

"duplicates_removal" may contain multiple elements inside it and
so should have a JSON array as a value (and not object).

BUG#31761802 STATISTICS ANY QUERIES USING VIEWS ARE SUMMARIZED TOGETHER WITH THE VIEW DEFINITION SELECT

test case only

now when SLES12.3 is gone, we can enforce it

During startup, InnoDB must write a FILE_CHECKPOINT record.
However, before MDEV-12353 (in MariaDB Server 10.2, 10.3, 10.4)
the corresponding record MLOG_CHECKPOINT was encoded in a different way.

When we are upgrading from a logically empty 10.2, 10.3, or 10.4 redo log,
we must not write anything to the old log file, because if the server were
killed during the upgrade, we would end up with a corrupted log file, and
both the old and the new server would refuse to start up.

On upgrade, we must simply create a new logically empty log file
and replace the old ib_logfile0 with that.

This is a low hanging fruit. Before this patch std::map::emplace() was
a ~50% of the whole recv_sys_t::parse() operation in by test.
After the fix it's only ~20%.

recv_sys_t::parse() recv_sys_t::pages is a collection of all pages
to recovery. Often, there are multiple changes for a single page.
Often, they go in a row and for such cases let's avoid
lookup in a std::map. cached_pages_it serves as a cache
of size 1.

recv_sys_t::add(): replace page_id argument with a std::map::iterator

This reverts commit 2d21917e.

No explainations, lots of code moved, wrong cmake changes

This reverts commit 9feaa6be.

No, we do NOT support fmt 6.x, it formats values differently.
And we MUST use FMT_HEADER_ONLY

Signed-off-by: Sergei Krivonos <sergei.krivonos@mariadb.com>

page_zip_des_t::clear(): Avoid a bogus GCC warning with
some pointer arithmetics. Yes, storing the unrelated member "fix"
in this object is ugly, but it avoids memory alignment overhead
on 64-bit architectures.

In commit aae3f921
recv_apply_hashed_log_recs() was replaced by recv_sys_t::apply().