INSTALL SONAME ignores attempts to load the same plugin twice, it's not an error
(because one can load one plugin by name and then install soname for the rest).
But Federated and FederatedX are different plugins, despite having the same name.

Now plugin_add() only considers two plugins identical if their names are the same
string (compared as pointers). Otherwise it reports an error.,

first update system tables, then the rest

remove ipv4-mapped-ipv6 test, this feature is not always available

            rpl.rpl_gtid_crash fail on PPC64

This is an addition to the original patch.

Restored show binlog events output and adjusted filters to
replace [\d-\d-\d,\d-\d-\d,\d-\d-\d] with [#-#-#].

fix_privilege_tables: use ALTER TABLE to fix last_update column in innodb stat tables 

Remove the "don't update the row for b'' and store uninitialized bytes on disk" change.
Update test cases to allow DEFAULT b'', because b'' is a valid expression elsewhere.

Don't ignore errors from Count_distinct_field::add(),
pass them to the caller, so that it could abort the data
collection loop.

when binding to wildcard addresses (no --bind is specified or --bind=*),
bind to both ipv6 and ipv4 as mysql-5.6 is doing.

when looking for my.cnf files: if DEFAULT_SYSCONFDIR (or INSTALL_SYSCONFDIR)
is specified (for rpms it always is), use that instead of hardcoded /etc path.

            tool chain

Reverted addition to the original patch:
InterlockedExchangeAcquire and InterlockedAndRelease are
supported only on Itanium-based systems.

            tool chain

This is an addition to the original patch. On Windows
InterlockedExchange implies full memory barrier, whereas
only acquire/release barriers required.

MDEV-6050 MySQL Bug#13036505 62540: TABLE LOCKS WITHIN STORED FUNCTIONS ARE BACK IN 5.5 WITH MIXED AND ROW BI

cherry-pick revno 4053
committer: Gopal Shankar <gopal.shankar@oracle.com>
branch nick: sf_mysql-5.6
timestamp: Fri 2012-07-20 12:25:34 +0530
message:
  Bug#13036505 62540: TABLE LOCKS WITHIN STORED FUNCTIONS ARE BACK IN
                      5.5 WITH MIXED AND ROW BI.

MDEV-6340 Mariadb 10.0.12 fatal "Lost connection" error w/ GCC 4.9 'Release' build; workaround ~ CFLAGS="-fno-delete-null-pointer-checks"

don't use attribute nonnull for arguments that can be null

buf0flu.cc line 549.

Analysis: If buf_page_get_state(bpage) == BUF_BLOCK_REMOVE_HASH then
buf_page_in_file(bpage) might not be true. 

Fix: ut_a(buf_page_in_file(bpage) || buf_page_get_state(bpage) == BUF_BLOCK_REMOVE_HASH);

There was a race condition in lock_table_names() which didn't properly test for CREATE OR REPLACE for slaves.


sql/sql_parse.cc:
  Copy create_info flags to thd for lock_table_names()
sql/sql_table.cc:
  Copy create_info flags to thd for lock_table_names()

also a compiler warning.

            main.mysqlslap fail on PPC64

There seem to be a bug on Power8 which doesn't guarantee
a signal to be delivered to waiting thread if broadcast
is called outside of mutex.

For now workaround it by calling broadcast while mutex is
still held.

4229: MDEV-5670: Assertion failure in file buf0lru.c line 2355
      Add more status information if repeatable.

4230: MDEV-5673: Crash while parallel dropping multiple tables under heavy load
      Improve long semaphore wait output to include all semaphore waits
      and try to find out if there is a sequence of waiters.

4233: Fix compiler errors on product build.

4237: Fix too agressive long semaphore wait output and add guard against introducing
      compression failures on insert buffer.

4238: Fix test failure caused by simulated compression failure on
      IBUF_DUMMY table.

This problem affects only debug builds on PPC64.

There are at least two race conditions around
rw_lock_debug_mutex_enter and rw_lock_debug_mutex_exit:

- rw_lock_debug_waiters was loaded/stored without setting
  appropriate locks/memory barriers.
- there is a gap between calls to os_event_reset() and
  os_event_wait() and in such case we're supposed to pass
  return value of the former to the latter.

Fixed by replacing self-cooked spinlocks with system mutexes.
These days system mutexes offer much better performance. OTOH
performance is not that critical for debug builds.