- fixed wrong test case for bug 20903
- closed the dangling connections in trigger.test
- GET_LOCK() and RELEASE_LOCK() now produce more detailed log
- fixed an omission in GET_LOCK() : assign the thread_id when
acquiring the lock.
Sometimes a parameter slot may not get a value because of the protocol
data being plain wrong.
Such cases should be detected and handled by returning an error.
Fixed by checking data stream constraints where possible (like maximum
length) and reacting to the case where a value cannot be constructed.
When the INSERT .. ON DUPLICATE KEY UPDATE has to update a matched row but
the new data is the same as in the record then it returns as if
no rows were inserted or updated. Nevertheless the row is silently
updated. This leads to a situation when zero updated rows are reported
in the case when data has actually been changed.
Now the write_record function updates a row only if new data differs from
that in the record.
protocol
Update for function moved to new file in 5.1.
One could send a malformed packet that caused the server to SEGV. In
recent versions of the password protocol, the client tells the server
what length the ciphertext is (almost always 20). If that length was
large enough to overflow a signed char, then the number would jump to
very large after being casted to unsigned int.
Instead, cast the *passwd char to uchar.
Problem: we may get unexpected results comparing [u]longlong values as doubles.
Fix: adjust the test to use integer comparators.
Note: it's not a real fix, we have to implement some new comparators
to completely solve the original problem (see my comment in the bug report).
protocol
One could send a malformed packet that caused the server to SEGV. In
recent versions of the password protocol, the client tells the server
what length the ciphertext is (almost always 20). If that length was
large enough to overflow a signed char, then the number would jump to
very large after being casted to unsigned int.
Instead, cast the *passwd char to uchar.
on PPC/Debian Linux default stack size for a thread is too big.
As we use default thread settings in mysqltest, the
thread creation fails if we create lots of threads (as it
happens in flush.test). So now stack size is explicitly specified
for the mysqltest
when logging is enabled.
Currently the partition engine doesn't allow log tables to
be partitioned. But this was not checked and the server crashed.
Fixed by adding a check in ALTER TABLE to disable partitioning the
log tables.
While working on the cause of the problem improved the way the log
thread structures are initialized before opening the log tables.
Changed SHOW ENGINES to work in the same way as I_S.ENGINES.
For this: removed the functions mysqld_show_storage_engines and show_handlerton, and
made SHOW ENGINES work via the common function iter_schema_engines.
There in no test case because an engine (except of MyISAM) may be not compiled or disabled
which may affect the test result.
When constructing the path to the original .frm file ALTER .. RENAME
was unnecessary (and incorrectly) lowercasing the whole path when not
on a case-insensitive filesystem.
This path should not be modified because of lower_case_table_names
as it is already in the correct case according to that setting.
Fixed by removing the lowercasing.
Unfortunately testing this would require running the tests on a case
sensitive filesystem in a directory that has uppercase letters.
This cannot be guaranteed in all setups so no test case added.
In case of database level grant the database name may be a pattern,
in case of table|column level grant the database name can not be a pattern.
We use 'dont_check_global_grants' as a flag to determine
if it's database level grant command
(see SQLCOM_GRANT case, mysql_execute_command() function) and
set db_is_pattern according to 'dont_check_global_grants' value.
ORDER BY and LIMIT 1.
The bug was introduced by the patch for bug 21727. The patch
erroneously skipped initialization of the array of headers
for sorted records for non-first evaluations of the subquery.
To fix the problem a new parameter has been added to the
function make_char_array that performs the initialization.
Now this function is called for any invocation of the
filesort procedure. Yet it allocates the buffer for sorted
records only if this parameter is NULL.
