The crash happens because we change share->partition_info where 'share' is global struct
(it affects other threads which use the same 'share').
It causes discrepancy between 'share' and handler data. 
The fix:
Move share->partition_info update into WFRM_INSTALL_SHADOW part which is protected by OPEN_lock.

into  magare.gmz:/home/kgeorge/mysql/work/merge-5.1-opt

  Fix for the bug#31048 for 64bit platforms.
subselect.test, subselect.result:
  Corrected text case for the bug#31048.

into  gleb.loc:/work/bk/5.0-opt

into  magare.gmz:/home/kgeorge/mysql/autopush/B31171-5.1-opt

into  polly.(none):/home/kaa/src/opt/mysql-5.1-opt

into  polly.(none):/home/kaa/src/opt/mysql-5.0-opt

into  polly.(none):/home/kaa/src/opt/bug32221/my51-bug31445

We do not have any executables in libmysql/release/ anymore.

into  magare.gmz:/home/kgeorge/mysql/autopush/B31171-5.1-opt

into  polly.(none):/home/kaa/src/opt/mysql-5.1-opt

into  polly.(none):/home/kaa/src/opt/mysql-5.0-opt

into  polly.(none):/home/kaa/src/opt/bug32221/my51-bug31445

into  magare.gmz:/home/kgeorge/mysql/autopush/B31171-5.1-opt

                  is_last_prefix <= 0, file .\opt_range.cc.

SELECT ... GROUP BY bit field failed with an assertion if the
bit length of that field was not divisible by 8.

 "Table is already up to date" vs. "OK"

On MacOSX 10.5 when you cast something to "bool"
(the built in C type) it takes values 0 or 1 
instead of 0-255 as it seems to be on older compilers.
Fixed by removing the typecast (not needed).
No test case needed : there are tests that test it.

into  magare.gmz:/home/kgeorge/mysql/work/B30788-5.1-opt

into  magare.gmz:/home/kgeorge/mysql/autopush/B30788-5.0-opt

Index lookup does not always guarantee that we can
simply remove the relevant conditions from the WHERE
clause. Reasons can be e.g. conversion errors, 
partial indexes etc. 
The optimizer was removing these parts of the WHERE 
condition without any further checking.
This leads to "false positives" when using indexes.
Fixed by checking the index reference conditions
(using WHERE) when using indexes with sub-queries.

into  moonbone.local:/work/31048-bug-5.0-opt-mysql

  Additional stack check for the bug#31048.

into  gleb.loc:/work/bk/5.0-opt

8bit escape characters, termination and enclosed characters
were silently ignored by SELECT INTO query, but LOAD DATA INFILE
algorithm is 8bit-clean, so data was corrupted during 
encoding.

into  mysql.com:/home/psergey/mysql-5.1-bug30573

into  mysql.com:/home/hf/work/mysql-5.0-opt

into  mysql.com:/home/hf/work/31868/my50-31868

into  mysql.com:/home/hf/work/31868/my51-31868

into  mysql.com:/home/hf/work/31868/my41-31868

into  mysql.com:/home/hf/work/31868/my51-31868

into  mysql.com:/home/hf/work/31868/my51-31868

The problem: ha_partition::read_range_first() could return a record that is 
outside of the scanned range. If that record happened to be in the next 
subsequent range, it would satisfy the WHERE and appear in the output twice.
(we would get it the second time when scanning the next subsequent range)

Fix: 
Made ha_partition::read_range_first() check if the returned recod is within
the scanned range, like other read_range_first() implementations do.

into  moonbone.local:/work/31048-bug-5.0-opt-mysql

into  moonbone.local:/work/31048-bug-5.0-opt-mysql

into  moonbone.local:/work/30384-bug-5.0-opt-mysql

led to creating corrupted index.

Corrected fix. The new method called prepare2 is added to the select_create
class. As all preparations are done by the select_create::prepare function
it doesn't do anything. Slightly changed algorithm of calling the 
start_bulk_insert function. Now it's called from the select_insert::prepare2
function when the SQL_BUFFER_RESULT flags is set.
The is_bulk_insert_mode flag is removed as it is not needed anymore.

This bug is actually two. The first one manifests itself on an EXPLAIN
SELECT query with nested subqueries that employs the filesort algorithm.
The whole SELECT under explain is marked as UNCACHEABLE_EXPLAIN to preserve
some temporary structures for explain. As a side-effect of this values of
nested subqueries weren't cached and subqueries were re-evaluated many
times. Each time buffer for filesort was allocated but wasn't freed because
freeing occurs at the end of topmost SELECT. Thus all available memory was
eaten up step by step and OOM event occur.
The second bug manifests itself on SELECT queries with conditions where
a subquery result is compared with a key field and the subquery itself also
has such condition. When a long chain of such nested subqueries is present
the stack overrun occur. This happens because at some point the range optimizer
temporary puts the PARAM structure on the stack. Its size if about 8K and
the stack is exhausted very fast.

Now the subselect_single_select_engine::exec function allows subquery result
caching when the UNCACHEABLE_EXPLAIN flag is set.
Now the SQL_SELECT::test_quick_select function calls the check_stack_overrun
function for stack checking purposes to prevent server crash.