problems are located in the sql_partition.cc where functions calculation
    partition_id don't expect error returned from item->val_int().
    Fixed by adding checks to these functions.
    Note  - it tries to fix more problems than just the reported bug.
      
per-file comments:
modified:
  mysql-test/r/partition.result
    Bug#38083 Error-causing row inserted into partitioned table despite error
        test result
  mysql-test/t/partition.test
    Bug#38083 Error-causing row inserted into partitioned table despite error
        test case
  sql/opt_range.cc
    Bug#38083 Error-causing row inserted into partitioned table despite error
        get_part_id() call fixed
  sql/partition_info.h
    Bug#38083 Error-causing row inserted into partitioned table despite error
        get_subpart_id_func interface changed. 
  sql/sql_partition.cc
    Bug#38083 Error-causing row inserted into partitioned table despite error
        various functions calculationg partition_id and subpart_id didn't expect
            an error returned from item->val_int().  Error checks added.

with actual tree

(no conflicts)

The problem was that the test was trying to obtain a lock on
a table in one connection without ensuring that a insert which
was executed in another connection had released the lock on the
same table.

The solution is to add a dummy select query after the insert to
ensure that the table is unlocked and closed by the time it tries
to lock it again. This is enough to prevent test failures described
in the bug report. As an extra safety measure, concurrent inserts
are disabled.

Remove comments that calculated the Table_locks_immediate. This
value is not tested anymore and it's calculation did not reflect
the actual value.

Function uses a variable only available under debug mode.

The test failed originally -- did not reset binlogging - for the reason
identified by bug@15580.
However it never can be run on the embedded platfrom for yet another cause -
the embedded can not KILL query.
      
Comments added to the test particularly relating `reset master'
to the mentioned bug.

DBUG_EXECUTE_IF macro. The usage of the former caused breakage in other
trees as it got removed from the dbug library.

mysql-test-run.pl --start-and-exit starts but does not exit
Instead, it hangs with ActiveState perl. The error is
believed to be a bug in ActiveState implementation.
Workaround is using POSIX::_exit, as described here
http://www.perlmonks.org/?node_id=334610

Thanks to Philip Stoev for the idea of the patch.

"Data too long" in some configurations, tests "<ENGINE>_func_view" fail

The '@' symbol can not be used in the host name according to rfc952.
The fix:
added function check_host_name(LEX_STRING *str)
which checks that all symbols in host name string are valid and
host name length is not more than max host name length
(just moved check_string_length() function from the parser into check_host_name()).

                  tests "<ENGINE>_func_view" fail

Bug#38762 main.federated_bug_25714 fails sporadically

The problem:
I_S views table does not check the presence of SHOW_VIEW_ACL|SELECT_ACL
privileges for a view. It leads to discrepancy between SHOW CREATE VIEW
and I_S.VIEWS.
The fix:
added appropriate check.

                  is inconsistent
+ several improvements
Details:
- The subtest with assignment of floating point numbers to
  DECIMAL parameters in functions and procedures checks
  now that the final DECIMAL value is the same as if we assign
  the floating point numbers to columns, user variables etc.
  = The impact of math libs or truncation must be the same.
- Remove storage engine variants of this test because the
  stored procedure properties tested do not depend on
  the storage engine.
  Use the fastest storage engine (MEMORY) for any tables
  needed.
- reset global sort_buffer_size to startup value
- Partially improved formatting.

            
When analyzing the possible index use cases the server was re-using an internal structure.
This is wrong, as this internal structure gets updated during the analysis.
Fixed by making a copy of the internal structure for every place it needs to be used.
Also stopped the generation of empty SEL_TREE structures that unnecessary 
complicate the analysis.

Re-enabling failing test case because server logs were lost in pushbuild, so we need to run it again.

This patch contains fixes for two problems:

1. As originally reported, the server crashed on Mac OS X when trying to access
   an EXAMPLE table after the EXAMPLE plugin was installed.

   It turned out that the dynamically loaded EXAMPLE plugin called the
   function hash_earch() from a Mac OS X system library, instead of
   hash_earch() from MySQL's mysys library. Makefile.am in storage/example
   does not include libmysys. So the Mac OS X linker arranged the hash_search()
   function to be linked to the system library when the shared object is
   loaded.

   One possible solution would be to include libmysys into the linkage of
   dynamic plugins. But then we must have a libmysys.so, which must be
   used by the server too. This could have a minimal performance impact,
   but foremost the change seems to bee too risky at the current state of
   MySQL 5.1.

   The selected solution is to rename MySQL's hash_search() to my_hash_search()
   like it has been done before with hash_insert() and hash_reset().

   Since this is the third time, we need to rename a hash_*() function,
   I did renamed all hash_*() functions to my_hash_*().

   To avoid changing a zillion calls to these functions, and announcing
   this to hundreds of developers, I added defines that map the old names
   to the new names.

   This change is in hash.h and hash.c.

2. The other problem was improper implementation of the handlerton-to-plugin
   mapping. We use a fixed-size array to hold a plugin reference for each
   handlerton. On every install of a handler plugin, we allocated a new slot
   of the array. On uninstall we did not free it. After some uninstall/install
   cycles the array overflowed. We did not check for overflow.

   One fix is to check for overflow to stop the crashes.

   Another fix is to free the array slot at uninstall and search for a free slot
   at plugin install.

   This change is in handler.cc.