Tags: edgarlanting/mysql-server
Tags
Merge tag 'mysql-5.7.6' into mysql-5.7.7-rc-release. This is a null merge to include commits previously cherry-picked into 5.7.6 in the history of 5.7.7.
Bug #20730155: BACKPORT BUG#19699237 TO 5.1
Backport from mysql-5.5 to mysql-5.1
Bug# 19699237: UNINITIALIZED VARIABLE IN
ITEM_FIELD::STR_RESULT LEADS TO INCORRECT
BEHAVIOR
ISSUE:
------
When the following conditions are satisfied in a query, a
server crash occurs:
a) Two rows are compared using a NULL-safe equal-to operator.
b) Each of these rows belong to different charsets.
SOLUTION:
---------
When one charset is converted to another for comparision,
the constructor of "Item_func_conv_charset" is called.
This will attempt to use the Item_cache if the string is a
constant. This check succeeds because the "used_table_map"
of the Item_cache class is never set to the correct value.
Since it is mistakenly assumed to be a constant, it tries
to fetch the relevant null value related fields which are
yet to be initialized. This results in valgrind issues
and wrong results.
The fix is to update the "used_table_map" of "Item_cache".
This will allow "Item_func_conv_charset" to realise that
this is not a constant.
Revert accidental bump of server version back to 5.6.23
BUG#19811871 VERSION NUMBR NOT SHOWN IN LOG WHEN [RE]STARTING 5.6.21 … …SERVICE WITH SLES11 REPO Log file directory had too strict access rights, server not able to write to log file. Signed-off-by: Terje Røsten <[email protected]>
Bug#20518217 M_I_DB SHOULD RUN WITH -V OPTION WITH DEPLOYMENT SCRIPTS… … TO GET ROOT PASSWORD Switch to new init mechanism offered by mysqld option --initialize, change align all rpm based installs. Signed-off-by: Terje Røsten <[email protected]> (cherry picked from commit 08592c3cfe370f5a9154f8a04515e2b709b75d15)
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