Commit graph

243 commits

Author SHA1 Message Date
Sergei Golubchik
78d9fdb134 non-functional cleanup, clarifying CONVERT_IF_BIGGER_TO_BLOB 2013-01-07 20:21:05 +01:00
Igor Babaev
8b469eb515 Merge 5.3->5.5. 2012-03-01 14:22:22 -08:00
Igor Babaev
d2e3b33b8c Rolled back the patch for bug 791761.
A better fix for this bug will be pulled from mariadb-5.2.
2012-02-26 00:19:07 -08:00
Sergei Golubchik
38e3ae155d mysql-5.5 merge 2012-01-16 20:16:35 +01:00
Sergei Golubchik
4f435bddfd 5.3 merge 2012-01-13 15:50:02 +01:00
Michael Widenius
6d4224a31c Merge with 5.2.
no_error handling for select (used by INSERT ... SELECT) still needs to be fixed, but I will do that in a separate commit
2011-12-11 11:34:44 +02:00
Michael Widenius
6920457142 Merge with MariaDB 5.1 2011-11-24 18:48:58 +02:00
Michael Widenius
a8d03ab235 Initail merge with MySQL 5.1 (XtraDB still needs to be merged)
Fixed up copyright messages.
2011-11-21 19:13:14 +02:00
Sergei Golubchik
0e007344ea mysql-5.5.18 merge 2011-11-03 19:17:05 +01:00
Sergei Golubchik
76f0b94bb0 merge with 5.3
sql/sql_insert.cc:
  CREATE ... IF NOT EXISTS may do nothing, but
  it is still not a failure. don't forget to my_ok it.
  ******
  CREATE ... IF NOT EXISTS may do nothing, but
  it is still not a failure. don't forget to my_ok it.
sql/sql_table.cc:
  small cleanup
  ******
  small cleanup
2011-10-19 21:45:18 +02:00
Sergey Glukhov
bd4785a6b7 Bug#11750518 41090: ORDER BY TRUNCATES GROUP_CONCAT RESULT
When temporary tables is used for result sorting
result field for gconcat function is created using
group_concat_max_len size. It leads to result truncation
when character_set_results is multi-byte character set due
to insufficient tmp table field size.
The fix is to increase temporary table field size for
gconcat. Method make_string_field() is overloaded
for Item_func_group_concat class and uses
max_characters * collation.collation->mbmaxlen size for
result field. max_characters is maximum number of characters
what can fit into max_length size.


mysql-test/r/ctype_utf16.result:
  test result
mysql-test/r/ctype_utf32.result:
  test result
mysql-test/r/ctype_utf8.result:
  test result
mysql-test/t/ctype_utf16.test:
  test case
mysql-test/t/ctype_utf32.test:
  test case
mysql-test/t/ctype_utf8.test:
  test case
sql/item.h:
  make Item::make_string_field() virtual
sql/item_sum.cc:
  added Item_func_group_concat::make_string_field(TABLE *table) method
  which uses max_characters * collation.collation->mbmaxlen size for
  result item. max_characters is maximum number of characters what can
  fit into max_length size.
sql/item_sum.h:
  added Item_func_group_concat::make_string_field(TABLE *table) method
2011-10-12 17:41:25 +04:00
Igor Babaev
2e8542f462 Fixed LP bug #791761.
An aggregating query over an empty set of a join of two tables
with a rejecting HAVING clause erroneously could return a row.
It could happen in the cases when the optimizer made a conclusion
that the aggregating set was empty.
Wrong results were produced because the server missed initial
setting for aggregation functions in the mentioned cases.
2011-07-20 21:55:55 -07:00
unknown
99cce18955 Fixed LP BUG#800696.
The problem was that optimizer removes some outer references (it they are
constant for example) and the list of outer items built during prepare phase is
not actual during execution phase when we need it as the cache parameters.
First solution was use pointer on pointer on outer reference Item and
initialize temporary table on demand. This solved most problem except case
when optimiser also reduce Item which contains outer references ('OR' in
this bug test suite).

The solution is to build the list of outer reference items on execution
phase (after optimization) on demand (just before temporary table creation)
by walking Item tree and finding outer references among Item_ident
(Item_field/Item_ref) and Item_sum items.

Removed depends_on list (because it is not neede any mnore for the cache, in the place where it was used it replaced with upper_refs).

Added processor (collect_outer_ref_processor) and get_cache_parameters() methods to collect outer references (or other expression parameters in future).

mysql-test/r/subselect_cache.result:
  A new test added.
mysql-test/r/subselect_scache.result:
  Changes in creating the cache and its paremeters order or adding arguments of aggregate function (which is a parameter also, but this has no influence on the result).
mysql-test/t/subselect_cache.test:
  Added a new test.
sql/item.cc:
  depends_on removed.
  
  Added processor (collect_outer_ref_processor) and get_cache_parameters() methods to collect outer references.
  
  Item_cache_wrapper collect parameters befor initialization of its cache.
sql/item.h:
  depends_on removed.
  
  Added processor (collect_outer_ref_processor) and get_cache_parameters() methods to collect outer references.
sql/item_cmpfunc.cc:
  depends_on removed.
  
  Added processor (collect_outer_ref_processor) to collect outer references.
sql/item_cmpfunc.h:
  Added processor (collect_outer_ref_processor) to collect outer references.
sql/item_subselect.cc:
  depends_on removed.
  Added processor get_cache_parameters() method to collect outer references.
sql/item_subselect.h:
  depends_on removed.
  Added processor get_cache_parameters() method to collect outer references.
sql/item_sum.cc:
  Added processor (collect_outer_ref_processor) method to collect outer references.
sql/item_sum.h:
  Added processor (collect_outer_ref_processor) and get_cache_parameters() methods to collect outer references.
sql/opt_range.cc:
  depends_on removed.
sql/sql_base.cc:
  depends_on removed.
sql/sql_class.h:
  New iterator added.
sql/sql_expression_cache.cc:
  Build of list of items resolved in outer query done just before creating expression cache on the first execution of the subquery which removes influence of optimizer removing items (all optimization already done).
sql/sql_expression_cache.h:
  Build of list of items resolved in outer query done just before creating expression cache on the first execution of the subquery which removes influence of optimizer removing items (all optimization already done).
sql/sql_lex.cc:
  depends_on removed.
sql/sql_lex.h:
  depends_on removed.
sql/sql_list.h:
  Added add_unique method to add only unique elements to the list.
sql/sql_select.cc:
  Support of new Item list added.
sql/sql_select.h:
  Support of new Item list added.
2011-07-19 23:19:10 +03:00
Sergei Golubchik
9809f05199 5.5-merge 2011-07-02 22:08:51 +02:00
Kent Boortz
68f00a5686 Updated/added copyright headers 2011-06-30 17:37:13 +02:00
Kent Boortz
44135d4725 Updated/added copyright headers 2011-06-30 17:31:31 +02:00
Kent Boortz
02e07e3b51 Updated/added copyright headers 2011-06-30 17:46:53 +02:00
Michael Widenius
1be5462d59 Merge with MariaDB 5.1 2011-05-03 19:10:10 +03:00
Michael Widenius
e415ba0fb2 Merge with MySQL 5.1.57/58
Moved some BSD string functions from Unireg
2011-05-02 20:58:45 +03:00
Michael Widenius
3358cdd504 Merge with 5.1 to get in changes from MySQL 5.1.55 2011-02-28 19:39:30 +02:00
Michael Widenius
ff3da0f963 Change TABLE->alias to String for less memory reallocation
Changed some String.ptr() -> String.c_ptr() for String that are not guaranteed to end with \0
Removed some c_ptr() usage from parameters to functions that takes ptr & length
Use preallocate buffers to avoid calling malloc() for most operations. 


sql/event_db_repository.cc:
  alias is now a String
sql/event_scheduler.cc:
  c_ptr -> c_ptr_safe() to avoid warnings from valgrind.
sql/events.cc:
  c_ptr -> c_ptr_safe() to avoid warnings from valgrind.
  c_ptr -> ptr() as function takes ptr & length
sql/field.cc:
  alias is now a String
sql/field.h:
  alias is now a String
sql/ha_partition.cc:
  alias is now a String
sql/handler.cc:
  alias is now a String
  ptr() -> c_ptr() as string is not guaranteed to be \0 terminated
sql/item.cc:
  Store error parameter in separarte buffer to ensure correct error message
sql/item_func.cc:
  ptr() -> c_ptr_safe() as string is not guaranteed to be \0 terminated
sql/item_sum.h:
  Use my_strtod() instead of my_atof() to not have to make string \0 terminated
sql/lock.cc:
  alias is now a String
sql/log.cc:
  c_ptr() -> ptr() as function takes ptr & length
sql/log_event.cc:
  c_ptr_quick() -> ptr() as we only want to get the pointer to String buffer
sql/opt_range.cc:
  ptr() -> c_ptr() as string is not guaranteed to be \0 terminated
sql/opt_table_elimination.cc:
  alias is now a String
sql/set_var.cc:
  ptr() -> c_ptr() as string is not guaranteed to be \0 terminated
  c_ptr() -> c_ptr_safe() to avoid warnings from valgrind.
  c_ptr() -> ptr() as function takes ptr & length
  Simplify some code.
sql/sp.cc:
  c_ptr() -> ptr() as function takes ptr & length
sql/sp_rcontext.cc:
  alias is now a String
sql/sql_base.cc:
  alias is now a String.
  Here we win a realloc() for most alias usage.
sql/sql_class.cc:
  Use size descriptor for printf() to avoid accessing bytes outside of buffer
sql/sql_insert.cc:
  Change allocation of TABLE as it's now contains a String
  _ptr() -> ptr() as function takes ptr & length
sql/sql_load.cc:
  Use preallocate buffers to avoid calling malloc() for most operations.
sql/sql_parse.cc:
  Use c_ptr_safe() to ensure string is \0 terminated.
sql/sql_plugin.cc:
  c_ptr_quick() -> ptr() as function takes ptr & length
sql/sql_select.cc:
  alias is now a String
sql/sql_show.cc:
  alias is now a String
sql/sql_string.h:
  Added move() function to change who owns the string (owner does the free)
sql/sql_table.cc:
  alias is now a String
  c_ptr() -> c_ptr_safe() to avoid warnings from valgrind.
sql/sql_test.cc:
  c_ptr() -> c_ptr_safe() to avoid warnings from valgrind.
  alias is now a String
sql/sql_trigger.cc:
  c_ptr() -> c_ptr_safe() to avoid warnings from valgrind.
  Use field->init() to setup pointers to alias.
sql/sql_update.cc:
  alias is now a String
sql/sql_view.cc:
  ptr() -> c_ptr_safe() as string is not guaranteed to be \0 terminated
sql/sql_yacc.yy:
  r() -> c_ptr() as string is not guaranteed to be \0 terminated
sql/table.cc:
  alias is now a String
sql/table.h:
  alias is now a String
storage/federatedx/ha_federatedx.cc:
  Remove extra 1 byte alloc that is automaticly done by strmake()
  Ensure that error message ends with \0
storage/maria/ha_maria.cc:
  alias is now a String
storage/myisam/ha_myisam.cc:
  alias is now a String
2011-02-28 12:48:50 +02:00
Michael Widenius
58bb0769bd Merge with MySQL 5.1.55
- Fixed some issues with partitions and connection_string, which also fixed lp:716890 "Pre- and post-recovery crash in Aria"
- Fixed wrong assert in Aria

Now need to merge with latest xtradb before pushing 

sql/ha_partition.cc:
  Ensure that m_ordered_rec_buffer is not freed before close.
sql/mysqld.cc:
  Changed to use opt_stack_trace instead of opt_pstack.
  Removed references to pstack
sql/partition_element.h:
  Ensure that connect_string is initialized
storage/maria/ma_key_recover.c:
  Fixed wrong assert
2011-02-20 18:51:43 +02:00
Alexander Barkov
a2850a2f53 Bug#59149 valgrind warnings with "like .. escape .." function
Problem: when processing a query like:
  SELECT '' LIKE '1' ESCAPE COUNT(1);
escape_item->val_str() was never executed and the "escape" class member
stayed initialized, which led to valgrind uninitialized memory error.
      
Note, a query with some tables in "FROM" clause
returns ER_WRONG_ARGUMENTS in the same situation:

   SELECT '' LIKE '1' ESCAPE COUNT(1) FROM t1;
   ERROR 1210 (HY000): Incorrect arguments to ESCAPE

Fix: disallowing using aggregate functions in ESCAPE clause,
even if there are no tables used. There is no much use of that anyway.
2011-01-17 12:30:22 +03:00
Tor Didriksen
b503d77d5c Backport of fix for Bug#52123 2011-02-02 10:18:44 +01:00
Alexander Barkov
579df0dfc6 Merging from mysql-5.1 2011-01-17 12:39:59 +03:00
Sergey Glukhov
41f17a8707 5.1-bugteam->5.5-bugteam merge 2010-12-21 14:50:03 +03:00
Sergey Glukhov
e2db8e6ccb Bug#58030 crash in Item_func_geometry_from_text::val_str
Item_sum_max/Item_sum_min incorrectly set null_value flag and
attempt to get result in parent functions leads to crash.
This happens due to double evaluation of the function argumet.
First evaluation happens in the comparator and second one
happens in Item_cache::cache_value().
The fix is to introduce new Item_cache object which
holds result of the argument and use this cached value
as an argument of the comparator.

mysql-test/r/func_group.result:
  test case
mysql-test/t/func_group.test:
  test case
sql/item.cc:
  added assertion that ether we have some result or result is NULL.
sql/item_sum.cc:
  introduce new Item_cache object which
  holds result of the argument and use this cached value
  as an argument of the comparator.
sql/item_sum.h:
  introduce new Item_cache object which
  holds result of the argument and use this cached value
  as an argument of the comparator.
2010-12-21 14:34:11 +03:00
Georgi Kodinov
352ce1b596 Bug #57954: BIT_AND function returns incorrect results
when semijoin=on

When setting the aggregate function as having no rows to report
the function no_rows_in_result() was calling Item_sum::reset().
However this function in addition to cleaning up the aggregate 
value by calling aggregator_clear() was also adding the current
value to the aggregate value by calling aggregator_add().
Fixed by making no_rows_in_result() to call aggregator_clear()
directly.
Renamed Item_sum::reset to Item_sum::reset_and_add() to
and added a comment to avoid misinterpretation of what the
function does.
2010-12-08 14:28:06 +02:00
Guilhem Bichot
39b0af1e8c Fix for Bug#57932 "query with avg returns incorrect results":
when there was one NULL value, AVG(DISTINCT) could forget about other values.
See commit comment of item_sum.cc.

mysql-test/r/func_group.result:
  before the code fix, both SELECTs would return NULL
sql/item_sum.cc:
  Assume we are executing "SELECT AVG([DISTINCT] some_field) FROM some_table".
  and some_field is the single field of some_table for simplicity.
  Each time a row is processed (evaluate_join_record()->
  end_send_group()->update_sum_func()) an aggregator is notified,
  which itself notifies an Item_sum_avg.
  Without DISTINCT, this Item_sum_avg immediately increments its
  internal "sum of values" and "count of values" (the latter being
  Item_sum_avg::count). The count is incremented only if the row's value
  is not NULL (in Item_sum_avg::add()), per AVG() semantices. This row's value
  is available in args[0] of Item_sum_avg ("args[0]" stands for
  "the first argument of the item": it's an Item_field which automatically
  receives the row's value when a row is read from the table).
  bool Item_sum_avg::add()
  {
    if (Item_sum_sum::add()) << calculates the sum (ignores NULL)
      return TRUE;
    if (!args[0]->null_value)<<if added value is not NULL
      count++;       <<increment "count"
    return FALSE;
  }
  and everything works.
  With DISTINCT, when a row is processed by evaluate_join_record(),
  Item_sum_avg does no immediate computation, rather stores
  the row's value in a tree (to throw the value away if it is a duplicate
  of previous value, otherwise to remember all
  distinct values). It's only when it's time to send the average to the
  user (at end of the query:
  sub_select(end_of_records=true)->end_send_group()->
  select_send->send_data()->Protocol::send_result_set_row()->
  Item::send()->Item_sum_avg->val_str()), that we iterate over the tree,
  compute the sum and count: for this, for each element of the tree,
  Item_sum_avg::add() is called and has the same two steps as before:
  * Item_sum_sum::add() updates the sum (finding the tree element's value
  correctly, and determining correctly its NULLness - look for "arg_is_null"
  in that function)
  * the "if (!args[0]->null_value)" test right after, breaks: it uses args[0],
  which isn't the tree's element but rather the value for the last row
  processed by evaluate_join_record(). So if that last row was NULL,
  "count" stays 0 for each row, and AVG() then returns NULL (count==0 =>
  NULL, per AVG() semantics).
  The fix is to let the aggregator tell whether the value
  it just saw was NULL. The aggregator knows where to get the info
  thanks to virtual functions. Item_sum_sum::add() now asks
  the aggregator. Item_sum_avg() also asks the aggregator
  and then knows it shouldn't increment "count".
sql/item_sum.h:
  Aggregator can now tell about value/NULLness of just-aggregated value
2010-12-07 16:59:32 +01:00
Sergei Golubchik
65ca700def merge.
checkpoint.
does not compile.
2010-11-25 18:17:28 +01:00
Sergei Golubchik
04a4b43346 merge with 5.1 2010-10-25 15:21:16 +02:00
Sergei Golubchik
745cc74c33 5.1.51 merge 2010-10-19 15:58:35 +02:00
Alexey Kopytov
4124f1f467 Automerge. 2010-08-30 11:36:04 +04:00
Alexey Kopytov
d7d0f6390b Bug #54465: assert: field_types == 0 || field_types[field_pos]
== MYSQL_TYPE_LONGLONG

A MIN/MAX() function with a subquery as its argument could lead
to a debug assertion on debug builds or wrong data on release
ones.

The problem was a combination of the following factors:

- Item_sum_hybrid::fix_fields() might use the argument
(args[0]) to calculate 'hybrid_field_type' which was later used
to decide how the data should be sent to the client.

- Item_sum::make_field() might use the argument again to
calculate the field's type when sending result set metadata to
the client.

- The argument could be changed in between these two calls via
  Item::set_arg() leading to inconsistent metadata being
  reported.

Here is what was happening for the bug's test case:

1. Item_sum_hybrid::fix_fields() calculates hybrid_field_type
as MYSQL_TYPE_LONGLONG based on args[0] which is an
Item::SUBSELECT_ITEM at that time.

2. A temporary table is created to execute the
query. create_tmp_field_from_item() creates a Field_long object
according to the subselect's max_length.

3. The subselect item in Item_sum_hybrid is replaced by the
Item_field object referencing the newly created Field_long.

4. Item_sum::make_field() rightfully returns the
MYSQL_TYPE_LONG type when calculating the result set metadata.

5. When sending the actual data, Item::send() relies on the
virtual field_type() function which in our case returns
previously calculated hybrid_field_type == MYSQL_TYPE_LONGLONG.

It looks like the only solution is to never refer to the
argument's metadata after the result metadata has been
calculated in fix_fields(), since the argument itself may be
different by then. In this sense, Item_sum::make_field() should
never be used, because it may rely on the argument's metadata
and is only called after fix_fields(). The "default"
implementation in Item::make_field() should be used instead as
it relies only on field_type(), but not on the argument's type.

Fixed by removing Item_sum::make_field() so that the superclass
implementation Item::make_field() is always used.

mysql-test/r/func_group.result:
  Added a test case for bug #54465.
mysql-test/t/func_group.test:
  Added a test case for bug #54465.
sql/item_sum.cc:
  Removed Item_sum::make_field() so that the superclass
  implementation Item::make_field() is always used.
sql/item_sum.h:
  Removed Item_sum::make_field() so that the superclass
  implementation Item::make_field() is always used.
2010-08-27 13:44:35 +04:00
Michael Widenius
58a75bb18b Automerge with 5.1 2010-08-25 01:44:50 +03:00
Michael Widenius
b6fe4713fe Fix for LP#612894 Some aggregate functions (such as MIN MAX) work incorrectly in subqueries after getting NULL value
mysql-test/r/group_by.result:
  Added test that showed problems that no_rows_in_results() didn't work for expressions
mysql-test/r/subselect4.result:
  Test case for LP#612894
mysql-test/t/group_by.test:
  Added test that showed problems that no_rows_in_results() didn't work for expressions
mysql-test/t/subselect4.test:
  Test case for LP#612894
sql/item.h:
  Added restore_to_before_no_rows_in_result()
  Added function processor for no_rows_in_results() and restore_to_before_no_rows_in_results() to ensure it works with functions
  Fix that above functions are handled by Item_ref()
sql/item_func.h:
  Ensure that no_rows_in_results() and restore_to_before_no_rows_in_result() are called for all function arguments
sql/item_sum.cc:
  Added restore_to_before_no_rows_in_result() to restore settings after Item_sum_hybrid::no_rows_in_result() was called.
  This is needed to handle the case where we have made 'make_const()' on the item in opt_sum(), but the item will be reused again in a sub query.
  Ignore multiple calls to no_rows_in_result() as Item_ref is calling it twice.
sql/item_sum.h:
  Added restore_to_before_no_rows_in_result();
sql/sql_select.cc:
  Added reset of no_rows_in_result() for JOIN::reinit()
sql/sql_select.h:
  Added marker if no_rows_in_result() is called.
2010-08-23 12:46:25 +03:00
Michael Widenius
d042146e5b Merge with MariaDB 5.1.49
Removed references to HA_END_SPACE_KEY (which has been 0 for a long time)
2010-08-05 22:56:11 +03:00
Michael Widenius
e0a6b02c5d Merge with MySQL 5.1.49
Fixed Bug#52005 'JOIN_TAB->dependent' may be incorrectly propageted for multilevel outer joins' in a better way (patch from Sergey Petrunya)
2010-08-02 12:01:24 +03:00
Evgeny Potemkin
4777370bb3 Bug#49771: Incorrect MIN/MAX for date/time values.
This bug is a design flaw of the fix for the bug#33546. It assumed that an
item can be used only in one comparison context, but actually it isn't the
case. Item_cache_datetime is used to store result for MIX/MAX aggregate
functions. Because Arg_comparator always compares datetime values as INTs when
possible the Item_cache_datetime most time caches only INT value. But
since all datetime values has STRING result type MIN/MAX functions are asked
for a STRING value when the result is being sent to a client. The
Item_cache_datetime was designed to avoid conversions and get INT/STRING
values from an underlying item, but at the moment the values is asked
underlying item doesn't hold it anymore thus wrong result is returned.
Beside that MIN/MAX aggregate functions was wrongly initializing cached result
and this led to a wrong result.

The Item::has_compatible_context helper function is added. It checks whether
this and given items has the same comparison context or can be compared as
DATETIME values by Arg_comparator. The equality propagation optimization is
adjusted to take into account that items which being compared as DATETIME
can have different comparison contexts.
The Item_cache_datetime now converts cached INT value to a correct STRING
DATETIME value by means of number_to_datetime & my_TIME_to_str functions.
The Arg_comparator::set_cmp_context_for_datetime helper function is added. 
It sets comparison context of items being compared as DATETIMEs to INT if
items will be compared as longlong.
The Item_sum_hybrid::setup function now correctly initializes its result
value.
In order to avoid unnecessary conversions Item_sum_hybrid now states that it
can provide correct longlong value if the item being aggregated can do it
too.

mysql-test/r/group_by.result:
  Added a test case for the bug#49771.
sql/item.cc:
  Bug#49771: Incorrect MIN/MAX for date/time values.
  The equality propagation mechanism is adjusted to take into account that
  items which being compared as DATETIME can have different comparison
  contexts.
  The Item_cache_datetime now converts cached INT value to a correct STRING
  DATETIME/TIME value.
sql/item.h:
  Bug#49771: Incorrect MIN/MAX for date/time values.
  The Item::has_compatible_context helper function is added. It checks whether
  this and given items has the same comparison context or can be compared as
  DATETIME values by Arg_comparator.
  Added Item_cache::clear helper function.
sql/item_cmpfunc.cc:
  Bug#49771: Incorrect MIN/MAX for date/time values.
  The Arg_comparator::set_cmp_func now sets the correct comparison context
  for items being compared as DATETIME values.
sql/item_cmpfunc.h:
  Bug#49771: Incorrect MIN/MAX for date/time values.
  The Arg_comparator::set_cmp_context_for_datetime helper function is added. 
  It sets comparison context of items being compared as DATETIMEs to INT if
  items will be compared as longlong.
sql/item_sum.cc:
  Bug#49771: Incorrect MIN/MAX for date/time values.
  The Item_sum_hybrid::setup function now correctly initializes its result
  value.
sql/item_sum.h:
  Bug#49771: Incorrect MIN/MAX for date/time values.
  In order to avoid unnecessary conversions Item_sum_hybrid now states that it
  can provide correct longlong value if the item being aggregated can do it
  too.
2010-07-19 21:11:47 +04:00
Davi Arnaut
db2fe44c84 Merge of mysql-5.1-bugteam into mysql-trunk-merge. 2010-06-10 22:30:49 -03:00
Davi Arnaut
0f9ddfa9d8 Bug#42733: Type-punning warnings when compiling MySQL --
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.
2010-06-10 17:45:22 -03:00
Sergei Golubchik
ffc8f62b08 merge 5.1->5.2 2010-06-01 21:52:20 +02:00
Davi Arnaut
a8c288054e Bug#53445: Build with -Wall and fix warnings that it generates
Fix various mismatches between function's language linkage. Any
particular function that is declared in C++ but should be callable
from C must have C linkage. Note that function types with different
linkages are also distinct. Thus, if a function type is declared in
C code, it will have C linkage (same if declared in a extern "C"
block).

client/mysql.cc:
  Mismatch between prototype and declaration.
client/mysqltest.cc:
  mysqltest used to be C code. Use C linkage where appropriate.
cmd-line-utils/readline/input.c:
  Isolate unreachable code.
include/my_alloc.h:
  Function type must have C linkage.
include/my_base.h:
  Function type must have C linkage.
include/my_global.h:
  Add helper macros to avoid spurious namespace indentation.
include/mysql.h.pp:
  Update ABI file.
mysys/my_gethwaddr.c:
  Remove stray carriage return and fix coding style.
plugin/semisync/semisync_master_plugin.cc:
  Callback function types have C linkage.
plugin/semisync/semisync_slave_plugin.cc:
  Callback function types have C linkage.
sql/derror.cc:
  Expected function type has C linkage.
sql/field.cc:
  Use helper macro and fix indentation.
sql/handler.cc:
  Expected function type has C linkage.
sql/item_sum.cc:
  Correct function linkages. Remove now unnecessary cast.
sql/item_sum.h:
  Add prototypes with the appropriate linkage as otherwise they
  are distinct.
sql/mysqld.cc:
  Wrap functions in C linkage mode.
sql/opt_range.cc:
  C language linkage is ignored for class member functions.
sql/partition_info.cc:
  Add wrapper functions with C linkage for class member functions.
sql/rpl_utility.h:
  Use helper macro and fix indentation.
sql/sql_class.cc:
  Change type of thd argument -- THD is a class.
  Use helper macro and fix indentation.
sql/sql_class.h:
  Change type of thd argument -- THD is a class.
sql/sql_select.cc:
  Expected function type has C linkage.
sql/sql_select.h:
  Move prototype to sql_test.h
sql/sql_show.cc:
  Expected function type has C linkage.
sql/sql_test.cc:
  Fix required function prototype and fix coding style.
sql/sql_test.h:
  Removed unnecessary export and add another.
storage/myisammrg/ha_myisammrg.cc:
  Expected function type has C linkage.
storage/perfschema/pfs.cc:
  PSI headers are declared with C language linkage, which also
  applies to function types.
2010-05-31 12:29:54 -03:00
Alexander Nozdrin
9c960ecff1 Patch for Bug#54123 (Build failure on HPUX). 2010-06-01 07:54:15 +04:00
unknown
b1e00b6be8 Merge MySQL 5.1.46 into MariaDB.
Still two test failures to be solved: main.myisam and main.subselect.
2010-04-28 14:52:24 +02:00
Michael Widenius
1aafea91e5 Merge with 5.1
Fixed valgrind warnings found from running main.connect under valgrind


sql/sp_head.cc:
  Ensure that vcol_info is reset
sql/sql_acl.cc:
  Fixed usage of wrong memroot for password
sql/sql_yacc.yy:
  Ensure that vcol_info is reset
2010-04-01 12:04:26 +03:00
Mats Kindahl
23d8586dbf WL#5030: Split and remove mysql_priv.h
This patch:

- Moves all definitions from the mysql_priv.h file into
  header files for the component where the variable is
  defined
- Creates header files if the component lacks one
- Eliminates all include directives from mysql_priv.h
- Eliminates all circular include cycles
- Rename time.cc to sql_time.cc
- Rename mysql_priv.h to sql_priv.h
2010-03-31 16:05:33 +02:00
Michael Widenius
1fec5af772 Fixed compiler warnings and sporadic failures in test cases
mysql-test/extra/rpl_tests/rpl_tmp_table_and_DDL.test:
  Added missing sync_slave_with_master; Fixes random failures
mysql-test/include/default_mysqld.cnf:
  default-character-set -> character-set-server (removes warning in error files for usage of deprecated options)
mysql-test/lib/My/SafeProcess/safe_process.cc:
  Fixed compiler warning
mysql-test/lib/v1/mysql-test-run.pl:
  default-character-set -> character-set-server (removes warning in error files for usage of deprecated options)
mysql-test/suite/rpl/r/rpl_do_grant.result:
  Updated test results
mysql-test/suite/rpl/t/rpl_do_grant.test:
  Added missing sync_slave_with_master; Fixes random failures
  Had to explictely do stop slave before DROP USER to avoid failure on slave as the user is already dropped on slave.
mysql-test/suite/rpl/t/rpl_name_const.test:
  Added missing sync_slave_with_master; Fixes random failures
mysql-test/suite/rpl/t/rpl_row_basic_11bugs.test:
  Added missing sync_slave_with_master; Fixes random failures
mysql-test/t/bug47671-master.opt:
  default-character-set -> character-set-server (removes warning in error files for usage of deprecated options)
mysql-test/t/ctype_latin1_de-master.opt:
  default-character-set -> character-set-server (removes warning in error files for usage of deprecated options)
mysql-test/t/ctype_ucs2_def-master.opt:
  default-character-set -> character-set-server (removes warning in error files for usage of deprecated options)
sql-common/client.c:
  Fixed compiler warning
sql/item.cc:
  Renamed function to remove compiler warnings (with gcc)
sql/item.h:
  Renamed function to remove compiler warnings (with gcc)
sql/item_cmpfunc.cc:
  Renamed function to remove compiler warnings (with gcc)
sql/item_create.cc:
  Renamed function to remove compiler warnings (with gcc)
sql/item_create.h:
  Renamed function to remove compiler warnings (with gcc)
sql/item_sum.cc:
  Renamed function to remove compiler warnings (with gcc)
sql/item_sum.h:
  Renamed function to remove compiler warnings (with gcc)
sql/set_var.cc:
  Don't use bit_do_set() / bot_is_set() / bit_do_clear() as this generates compiler warnings
  (They are also of no use as we know the value can hold the bits)
sql/sql_yacc.yy:
  Renamed function to remove compiler warnings (with gcc)
storage/example/ha_example.h:
  Fixed old read_time() prototype
storage/maria/ma_search.c:
  Added extra variables to remove compiler warnings
storage/maria/maria_def.h:
  Added extra variables to remove compiler warnings
storage/myisam/ft_stopwords.c:
  Added cast to get rid of compiler warning
storage/xtradb/fil/fil0fil.c:
  Added cast to get rid of compiler warning
storage/xtradb/include/page0page.h:
  Added const to get rid of compiler warning
storage/xtradb/include/page0page.ic:
  Added const to get rid of compiler warning
support-files/compiler_warnings.supp:
  Added suppression of strict-aliasing
2010-03-28 21:10:00 +03:00
Alexey Kopytov
d95c1e3b47 Manual merge of mysql-trunk into mysql-trunk-merge.
Conflicts:

Text conflict in client/mysqlbinlog.cc
Text conflict in mysql-test/Makefile.am
Text conflict in mysql-test/collections/default.daily
Text conflict in mysql-test/r/mysqlbinlog_row_innodb.result
Text conflict in mysql-test/suite/rpl/r/rpl_typeconv_innodb.result
Text conflict in mysql-test/suite/rpl/t/rpl_get_master_version_and_clock.test
Text conflict in mysql-test/suite/rpl/t/rpl_row_create_table.test
Text conflict in mysql-test/suite/rpl/t/rpl_slave_skip.test
Text conflict in mysql-test/suite/rpl/t/rpl_typeconv_innodb.test
Text conflict in mysys/charset.c
Text conflict in sql/field.cc
Text conflict in sql/field.h
Text conflict in sql/item.h
Text conflict in sql/item_func.cc
Text conflict in sql/log.cc
Text conflict in sql/log_event.cc
Text conflict in sql/log_event_old.cc
Text conflict in sql/mysqld.cc
Text conflict in sql/rpl_utility.cc
Text conflict in sql/rpl_utility.h
Text conflict in sql/set_var.cc
Text conflict in sql/share/Makefile.am
Text conflict in sql/sql_delete.cc
Text conflict in sql/sql_plugin.cc
Text conflict in sql/sql_select.cc
Text conflict in sql/sql_table.cc
Text conflict in storage/example/ha_example.h
Text conflict in storage/federated/ha_federated.cc
Text conflict in storage/myisammrg/ha_myisammrg.cc
Text conflict in storage/myisammrg/myrg_open.c
2010-03-24 18:03:44 +03:00
Alexey Kopytov
5d407d0c1a Manual merge of mysql-5.1-bugteam to mysql-trunk-merge.
Conflicts:

Text conflict in mysql-test/r/partition_innodb.result
Text conflict in sql/field.h
Text conflict in sql/item.h
Text conflict in sql/item_cmpfunc.h
Text conflict in sql/item_sum.h
Text conflict in sql/log_event_old.cc
Text conflict in sql/protocol.cc
Text conflict in sql/sql_select.cc
Text conflict in sql/sql_yacc.yy
2010-03-20 23:23:42 +03:00