ha_innobase::index_read(), ha_innobase::records_in_range(): Check that
the index is useable before invoking row_sel_convert_mysql_key_to_innobase().
This fix is based on a suggestion by Yasufumi Kinoshita.
In process of record search it is not taken into account
that inital quick->file->ref value could be inapplicable
to range interval. After proper row is found this value is
stored into the record buffer and later the record is
filtered out at condition evaluation stage.
The fix is store a refernce of found row to the handler ref field.
mysql-test/r/innodb_mysql.result:
test case
mysql-test/std_data/intersect-bug50389.tsv:
test case
mysql-test/t/innodb_mysql.test:
test case
sql/opt_range.cc:
store a refernce of found row to the handler ref field.
dict_check_tablespaces_and_store_max_id(): Initialize max_space_id
and fil_system->max_assigned_id from DICT_HDR_MAX_SPACE_ID.
fil_space_create(): Suppress the warning unless !recv_recovery_on
(do not complain while applying the redo log).
Problem: a flaw (derefencing a NULL pointer) in the LIKE optimization
code may lead to a server crash in some rare cases.
Fix: check the pointer before its dereferencing.
mysql-test/r/func_like.result:
Fix for bug #54575: crash when joining tables with unique set column
- test result.
mysql-test/t/func_like.test:
Fix for bug #54575: crash when joining tables with unique set column
- test case.
sql/item_cmpfunc.cc:
Fix for bug #54575: crash when joining tables with unique set column
- check res2 buffer pointer before its dereferencing
as it may be NULL in some cases.
mysql_client_binlog_statement
Problem: server may read from unassigned memory performing
"wrong" BINLOG queries.
Fix: never read from unassigned memory.
mysql-test/suite/binlog/r/binlog_base64_flag.result:
Fix for bug #54393: crash and/or valgrind errors in
mysql_client_binlog_statement
- test result.
mysql-test/suite/binlog/t/binlog_base64_flag.test:
Fix for bug #54393: crash and/or valgrind errors in
mysql_client_binlog_statement
- test case.
sql/sql_binlog.cc:
Fix for bug #54393: crash and/or valgrind errors in
mysql_client_binlog_statement
- coded_len should not count trailing '/0';
- never read from unassigned memory.
line exceeds the limit
The number and/or names of our files for the main test suite
(contents of "mysql-test/t/") now exceeds the command line
length limit on AIX.
Solve the problem by using separate "cp" commands for the
various file name extensions.
storage/maria/unittest/ma_pagecache_single.c:
Check if we can flush write locked page for normal flush
Check that we can't flush read locked page with FLUSH_KEEP_LAZY (used by checkpoint)
This is the fix for 5.1, where only the behaviour on upgrade is changed:
If the server was stopped when the upgrade begins, we assume the
administrator is taking manual action, so we do not start the (new)
server at the end of the upgrade.
We still install the start/stop script, so it will be started on reboot.
support-files/mysql.spec.sh:
In the "pre" section of the spec file, check the server status, and write
the result to a file.
In the "post" section, evaluate the status file, and start the server if
it was running during status analysis.
In 5.1, we start the server if there is no status file (which will happen
on first installation, when there is no data directory yet).
- Changed default recovery mode from OFF to NORMAL to get automatic repair of not properly closed tables.
- Fixed a rase condition when two threads calls external_lock and thr_lock() in different order. When this happend the transaction that called external lock first
and thr_lock() last did not see see the rows from the other transaction, even if if it had to wait in thr_lock() for other to complete.
- Fixed that one can run maria_chk on an automatcally recovered tables without warnings about too small transaction id
- Don't give warning that crashed table could not be repaired if repair was disabled (and thus not run)
- Fixed a error result from flush_key_cache() which caused a DBUG_ASSERT() when one was using concurrent reads on non transactional tables that was updated.
client/mysqldump.c:
Add "" around error message to make it more readable
client/mysqltest.cc:
Free environment variables
mysql-test/r/mysqldump.result:
Updated results
mysql-test/r/openssl_1.result:
Updated results
mysql-test/suite/maria/r/maria-recover.result:
Updated results
mysql-test/suite/maria/r/maria3.result:
Updated results
mysql-test/suite/maria/t/maria3.test:
Added more test of temporary tables
storage/maria/ha_maria.cc:
Changed default recovery mode from OFF to NORMAL to get automatic repair of not properly closed tables.
Start transaction in ma_block_get_status() instead of in ha_maria::external_lock().
- This fixes a rase condition when two threads calls external lock and thr_lock() in different order. When this happend the transaction that called external lock first and thr_lock() last did not see see the rows from the other transaction, even if if it had to wait in thr_lock() for other to complete.
Store latest transaction id in controll file if recovery was done.
- This allows one to run maria_chk on an automatcally recovered tables without warnings about too small transaction id
storage/maria/ha_maria.h:
Don't give warning that crashed table could not be repaired if repair was disabled (and thus not run)
storage/maria/ma_blockrec.h:
Added new function "_ma_block_get_status_no_versioning()"
storage/maria/ma_init.c:
Added hook to create trn in ma_block_get_status() if we are using MariaDB
storage/maria/ma_open.c:
Ensure we call _ma_block_get_status_no_versioning() for transactional tables without versioning (like tables with fulltext)
storage/maria/ma_pagecache.c:
Allow one to flush blocks that are pinned for read.
This fixed a error result from flush_key_cache() which caused a DBUG_ASSERT() when one was using concurrent reads on non transactional tables that was updated.
storage/maria/ma_recovery.c:
Set maria_recovery_changed_data to 1 if recover changed something.
Set max_trid_in_control_file to max found trn if we found a bigger trn.
The allows will ensure that the control file is up to date after recovery which allows one to run maria_chk on the tables without warnings about too big trn
storage/maria/ma_state.c:
Call maria_create_trn_hook() in _ma_setup_live_state() instead of ha_maria::external_lock()
This ensures that 'state' and trn are in sync and thus fixes the race condition mentioned for ha_maria.cc
storage/maria/ma_static.c:
Added maria_create_trn_hook() and maria_recovery_changed_data
storage/maria/maria_def.h:
Added MARIA_HANDLER->external_ptr, which is used to hold MariaDB thd.
Added some new external variables
Removed reference to non existing function: maria_concurrent_inserts()
Item*) at opt_sum.cc:305
Queries applying MIN/MAX functions to indexed columns are
optimized to read directly from the index if all key parts
of the index preceding the aggregated key part are bound to
constants by the WHERE clause. A prefix length is also
produced, equal to the total length of the bound key
parts. If the aggregated column itself is bound to a
constant, however, it is also included in the prefix.
Such full search keys are read as closed intervals for
reasons beyond the scope of this bug. However, the procedure
missed one case where a key part meant for use as range
endpoint was being overwritten with a NULL value destined
for equality checking. In this case the key part was
overwritten but the range flag remained, causing open
interval reading to be performed.
Bug was fixed by adding more stringent checking to the
search key building procedure (matching_cond) and never
allow overwrites of range predicates with non-range
predicates.
An assertion was added to make sure open intervals are never
used with full search keys.
strict aliasing violations.
One somewhat major source of strict-aliasing violations and
related warnings is the SQL_LIST structure. For example,
consider its member function `link_in_list` which takes
a pointer to pointer of type T (any type) as a pointer to
pointer to unsigned char. Dereferencing this pointer, which
is done to reset the next field, violates strict-aliasing
rules and might cause problems for surrounding code that
uses the next field of the object being added to the list.
The solution is to use templates to parametrize the SQL_LIST
structure in order to deference the pointers with compatible
types. As a side bonus, it becomes possible to remove quite
a few casts related to acessing data members of SQL_LIST.
sql/handler.h:
Use the appropriate template type argument.
sql/item.cc:
Remove now-unnecessary cast.
sql/item_subselect.cc:
Remove now-unnecessary casts.
sql/item_sum.cc:
Use the appropriate template type argument.
Remove now-unnecessary cast.
sql/mysql_priv.h:
Move SQL_LIST structure to sql_list.h
Use the appropriate template type argument.
sql/sp.cc:
Remove now-unnecessary casts.
sql/sql_delete.cc:
Use the appropriate template type argument.
Remove now-unnecessary casts.
sql/sql_derived.cc:
Remove now-unnecessary casts.
sql/sql_lex.cc:
Remove now-unnecessary casts.
sql/sql_lex.h:
SQL_LIST now takes a template type argument which must
match the type of the elements of the list. Use forward
declaration when the type is not available, it is used
in pointers anyway.
sql/sql_list.h:
Rename SQL_LIST to SQL_I_List. The template parameter is
the type of object that is stored in the list.
sql/sql_olap.cc:
Remove now-unnecessary casts.
sql/sql_parse.cc:
Remove now-unnecessary casts.
sql/sql_prepare.cc:
Remove now-unnecessary casts.
sql/sql_select.cc:
Remove now-unnecessary casts.
sql/sql_show.cc:
Remove now-unnecessary casts.
sql/sql_table.cc:
Remove now-unnecessary casts.
sql/sql_trigger.cc:
Remove now-unnecessary casts.
sql/sql_union.cc:
Remove now-unnecessary casts.
sql/sql_update.cc:
Remove now-unnecessary casts.
sql/sql_view.cc:
Remove now-unnecessary casts.
sql/sql_yacc.yy:
Remove now-unnecessary casts.
storage/myisammrg/ha_myisammrg.cc:
Remove now-unnecessary casts.
strict aliasing violations.
Essentially, the problem is that large parts of the server were
developed in simpler times (last decades, pre C99 standard) when
strict aliasing and compilers supporting such optimizations were
rare to non-existent. Thus, when compiling the server with a modern
compiler that uses strict aliasing rules to perform optimizations,
there are several places in the code that might trigger undefined
behavior.
As evinced by some recent bugs, GCC does a somewhat good of job
misoptimizing such code, but on the other hand also gives warnings
about suspicious code. One problem is that the warnings aren't
always accurate, yet we can't afford to just shut them off as we
might miss real cases. False-positive cases are aggravated mostly
by casts that are likely to trigger undefined behavior.
The solution is to start a cleanup process focused on fixing and
reducing the amount of strict-aliasing related warnings produced
by GCC and others compilers. A good deal of noise reduction can
be achieved by just removing useless casts that are product of
historical cruft and are likely to trigger undefined behavior if
dereferenced.
client/mysql.cc:
Remove now-unnecessary casts.
Break up large strings.
client/mysql_upgrade.c:
Remove now-unnecessary casts.
client/mysqladmin.cc:
Remove now-unnecessary casts.
Break up large strings.
client/mysqlbinlog.cc:
Remove now-unnecessary casts.
client/mysqlcheck.c:
Remove now-unnecessary casts.
client/mysqldump.c:
Remove now-unnecessary casts.
client/mysqlimport.c:
Remove now-unnecessary casts.
client/mysqlshow.c:
Remove now-unnecessary casts.
client/mysqlslap.c:
Remove now-unnecessary casts.
client/mysqltest.cc:
Remove now-unnecessary casts.
extra/comp_err.c:
Remove now-unnecessary casts.
extra/my_print_defaults.c:
Remove now-unnecessary casts.
Break up large strings.
extra/mysql_waitpid.c:
Remove now-unnecessary casts.
extra/perror.c:
Remove now-unnecessary casts.
extra/resolve_stack_dump.c:
Remove now-unnecessary casts.
extra/resolveip.c:
Remove now-unnecessary casts.
include/my_getopt.h:
Use a void pointer type as the opaque type to avoid problems with type
incompatibility -- GCC issues warnings when the type name is not type
compatible with a operand. As a side bonus, a explicit cast won't be
necessary anymore.
include/sslopt-longopts.h:
Remove now-unnecessary casts.
Break up large strings.
mysys/my_getopt.c:
Update opaque type and introduce a type definition for the
argument to my_getopt_register_get_addr.
server-tools/instance-manager/options.cc:
Remove now-unnecessary casts.
sql/mysqld.cc:
Remove now-unnecessary casts.
Break up large strings.
Update mysql_getopt_value prototype (the old prototype
was different from the definition anyway).
sql/sql_plugin.cc:
The type of a pointer to a function must be compatible with the
pointed-to function type, otherwise the behavior is undefined.
sql/table.cc:
The variable buf pointer to pointer to pointer to constant char
could improperly alias a incompatible type in call to fix_type_
pointers. Since this was actually dead code, it is simply removed.
sql/unireg.cc:
Remove call to get_form_pos. The code creates a new FRM file which
is always truncated and writes the form position as 0. Hence, no
need to retrieve it, we now for sure it is 0.
storage/archive/archive_reader.c:
Remove now-unnecessary casts.
storage/myisam/ft_nlq_search.c:
Read weight directly from the buffer.
storage/myisam/fulltext.h:
Add explanation about the type duality of a key buffer.
Add accessor macro to retrieve a FT float value.
storage/myisam/mi_test1.c:
Remove now-unnecessary casts.
storage/myisam/myisam_ftdump.c:
Read weight directly from the buffer.
storage/myisam/myisamchk.c:
Remove now-unnecessary casts.
storage/myisam/myisamlog.c:
A pointer to char was used to alias a pointer to pointer to
unsigned char, thus violating strict aliasing rules.
storage/myisam/myisampack.c:
Remove now-unnecessary casts.
strings/decimal.c:
Remove aliasing violation, printing the value is enough for
debugging purposes.
tests/mysql_client_test.c:
Remove now-unnecessary casts.
The bug was caused by buffered output. Flushing resolved it.
We still recommend to allways call plan().
Also fix some compile warnings (formal parameter different from declaration)
unittest/examples/Makefile.am:
Omit core-t, since it will always fail.
unittest/examples/no_plan-t.c:
Comment that we recommend calling plan(NO_PLAN)
unittest/mytap/tap.c:
Use the named constant NO_PLAN
Flush all output.
unittest/mytap/tap.h:
Change documentation for the plan() function.
* fully support --mysqld=--plugin-load=xxxx
* uniformly support all loadable plugins, no need to hard-code
every new plugin in mtr
* autodetect MTR_VS_CONFIG on windows
