- When attempting to associate a Windows File handle to a C run-time file
handle there is an upper bound. Once reached, the newly created handles
will cause a memory leak since they are not properly associated with a
handle that can later be cleaned up.
mysys/my_open.c:
Bug#25222 Win32 HANDLE leak in my_sopen()
- Check for failure in _open_osfhandle and close allocated HANDLE on failure.
into quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/maint/mrg0306/50
mysql-test/mysql-test-run.pl:
Auto merged
mysql-test/r/sp.result:
Auto merged
mysql-test/t/sp.test:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/item_cmpfunc.h:
Auto merged
sql/mysqld.cc:
Auto merged
sql/sql_class.cc:
Auto merged
sql/sql_class.h:
Auto merged
sql/sql_parse.cc:
Auto merged
into weblab.(none):/home/marcsql/TREE/mysql-5.0-8407_b
mysql-test/r/view.result:
Auto merged
sql/mysqld.cc:
Auto merged
sql/sp_head.cc:
Auto merged
sql/sp_head.h:
Auto merged
sql/sql_class.cc:
Auto merged
sql/sql_class.h:
Auto merged
sql/sql_update.cc:
Auto merged
sql/table.cc:
Auto merged
sql/table.h:
Auto merged
sql/sql_base.cc:
Manual merge
Bug 18914 (Calling certain SPs from triggers fail)
Bug 20713 (Functions will not not continue for SQLSTATE VALUE '42S02')
Bug 21825 (Incorrect message error deleting records in a table with a
trigger for inserting)
Bug 22580 (DROP TABLE in nested stored procedure causes strange dependency
error)
Bug 25345 (Cursors from Functions)
This fix resolves a long standing issue originally reported with bug 8407,
which affect the behavior of Stored Procedures, Stored Functions and Trigger
in many different ways, causing symptoms reported by all the bugs listed.
In all cases, the root cause of the problem traces back to 8407 and how the
server locks tables involved with sub statements.
Prior to this fix, the implementation of stored routines would:
- compute the transitive closure of all the tables referenced by a top level
statement
- open and lock all the tables involved
- execute the top level statement
"transitive closure of tables" means collecting:
- all the tables,
- all the stored functions,
- all the views,
- all the table triggers
- all the stored procedures
involved, and recursively inspect these objects definition to find more
references to more objects, until the list of every object referenced does
not grow any more.
This mechanism is known as "pre-locking" tables before execution.
The motivation for locking all the tables (possibly) used at once is to
prevent dead locks.
One problem with this approach is that, if the execution path the code
really takes during runtime does not use a given table, and if the table is
missing, the server would not execute the statement.
This in particular has a major impact on triggers, since a missing table
referenced by an update/delete trigger would prevent an insert trigger to run.
Another problem is that stored routines might define SQL exception handlers
to deal with missing tables, but the server implementation would never give
user code a chance to execute this logic, since the routine is never
executed when a missing table cause the pre-locking code to fail.
With this fix, the internal implementation of the pre-locking code has been
relaxed of some constraints, so that failure to open a table does not
necessarily prevent execution of a stored routine.
In particular, the pre-locking mechanism is now behaving as follows:
1) the first step, to compute the transitive closure of all the tables
possibly referenced by a statement, is unchanged.
2) the next step, which is to open all the tables involved, only attempts
to open the tables added by the pre-locking code, but silently fails without
reporting any error or invoking any exception handler is the table is not
present. This is achieved by trapping internal errors with
Prelock_error_handler
3) the locking step only locks tables that were successfully opened.
4) when executing sub statements, the list of tables used by each statements
is evaluated as before. The tables needed by the sub statement are expected
to be already opened and locked. Statement referencing tables that were not
opened in step 2) will fail to find the table in the open list, and only at
this point will execution of the user code fail.
5) when a runtime exception is raised at 4), the instruction continuation
destination (the next instruction to execute in case of SQL continue
handlers) is evaluated.
This is achieved with sp_instr::exec_open_and_lock_tables()
6) if a user exception handler is present in the stored routine, that
handler is invoked as usual, so that ER_NO_SUCH_TABLE exceptions can be
trapped by stored routines. If no handler exists, then the runtime execution
will fail as expected.
With all these changes, a side effect is that view security is impacted, in
two different ways.
First, a view defined as "select stored_function()", where the stored
function references a table that may not exist, is considered valid.
The rationale is that, because the stored function might trap exceptions
during execution and still return a valid result, there is no way to decide
when the view is created if a missing table really cause the view to be invalid.
Secondly, testing for existence of tables is now done later during
execution. View security, which consist of trapping errors and return a
generic ER_VIEW_INVALID (to prevent disclosing information) was only
implemented at very specific phases covering *opening* tables, but not
covering the runtime execution. Because of this existing limitation,
errors that were previously trapped and converted into ER_VIEW_INVALID are
not trapped, causing table names to be reported to the user.
This change is exposing an existing problem, which is independent and will
be resolved separately.
mysql-test/r/information_schema_db.result:
Revised the pre-locking code implementation, aligned the tests.
mysql-test/r/sp-error.result:
Revised the pre-locking code implementation, aligned the tests.
mysql-test/r/sp.result:
Revised the pre-locking code implementation, aligned the tests.
mysql-test/r/trigger.result:
Revised the pre-locking code implementation, aligned the tests.
mysql-test/r/view.result:
Revised the pre-locking code implementation, aligned the tests.
mysql-test/t/sp-error.test:
Revised the pre-locking code implementation, aligned the tests.
mysql-test/t/sp.test:
Revised the pre-locking code implementation, aligned the tests.
mysql-test/t/trigger.test:
Revised the pre-locking code implementation, aligned the tests.
sql/lock.cc:
table->placeholder now checks for schema_table
sql/mysqld.cc:
my_message_sql(): invoke internal exception handlers
sql/sp_head.cc:
exec_open_and_lock_tables(): open and lock tables, or return the
continuation destination of this instruction
sql/sp_head.h:
exec_open_and_lock_tables(): open and lock tables, or return the
continuation destination of this instruction
sql/sql_base.cc:
Prelock_error_handler: delay open table errors until execution
sql/sql_class.cc:
THD: add internal error handler, as an exception mechanism.
sql/sql_class.h:
THD: add internal error handler, as an exception mechanism.
sql/sql_update.cc:
table->placeholder now checks for schema_table
sql/table.cc:
st_table_list::hide_view_error(): masked more errors for view security
sql/table.h:
table->placeholder now checks for schema_table, and unopened tables
into mysql.com:/home/ram/work/b23616/b23616.5.0
mysql-test/r/func_time.result:
Auto merged
mysql-test/t/func_time.test:
Auto merged
sql-common/my_time.c:
Auto merged
If we compare two items A and B, with B being (a constant) of a
larger type, then A gets promoted to B's type for comparison if
it's a constant, function, or CAST() column, but B gets demoted
to A's type if A is a (not explicitly CAST()) column. This is
counter-intuitive and not mandated by the standard.
Disabling optimisation where it would be lossy so field value
will properly get promoted and compared as binary string (rather
than as integers).
mysql-test/include/ps_conv.inc:
Bug #21103: DATE column not compared as DATE
When comparing a DATE field with a DATETIME constant, we now compare
as DATETIMEs, not as DATEs. Fix certain queries to still work.
mysql-test/r/func_time.result:
Bug #21103: DATE column not compared as DATE
When comparing a DATE field with a DATETIME constant, we now compare
as DATETIMEs, not as DATEs. Show that everything works as expected.
mysql-test/r/ps_2myisam.result:
Bug #21103: DATE column not compared as DATE
When comparing a DATE field with a DATETIME constant, we now compare
as DATETIMEs, not as DATEs. Fix certain queries to still work.
mysql-test/r/ps_3innodb.result:
Bug #21103: DATE column not compared as DATE
When comparing a DATE field with a DATETIME constant, we now compare
as DATETIMEs, not as DATEs. Fix certain queries to still work.
mysql-test/r/ps_4heap.result:
Bug #21103: DATE column not compared as DATE
When comparing a DATE field with a DATETIME constant, we now compare
as DATETIMEs, not as DATEs. Fix certain queries to still work.
mysql-test/r/ps_5merge.result:
Bug #21103: DATE column not compared as DATE
When comparing a DATE field with a DATETIME constant, we now compare
as DATETIMEs, not as DATEs. Fix certain queries to still work.
mysql-test/r/ps_7ndb.result:
Bug #21103: DATE column not compared as DATE
When comparing a DATE field with a DATETIME constant, we now compare
as DATETIMEs, not as DATEs. Fix certain queries to still work.
mysql-test/t/func_time.test:
Bug #21103: DATE column not compared as DATE
When comparing a DATE field with a DATETIME constant, we now compare
as DATETIMEs, not as DATEs. Show that everything works as expected.
sql/field.cc:
Bug #21103: DATE column not compared as DATE
#0 stores the date only as a 3-byte integer; save_in_field() in
#1 saves 'this' in field's format (DATE), #2 "converts a constant
item to an int and replaces the original item" -- consequently,
this replaces the Item_string "2006-11-06 04:08:36.0" with the
Item_int_with_ref 20061106.
#0 Field_newdate::store (this=0x8d26880, from=0x8d5e658 "2006-11-06
04:08:36.0", len=21, cs=0x88022c0) at field.cc:5344
#1 0x0817e3b0 in Item_string::save_in_field (this=0x8d5e670, field=0x8d26880, no_conversions=true) at item.cc:4340
#2 0x081b22ae in convert_constant_item (thd=0x8d25240, field=0x8d26880, item=0x8d5e74c) at item_cmpfunc.cc:245
#3 0x081b8a36 in Item_bool_func2::fix_length_and_dec (this=0x8d5e6f8) at item_cmpfunc.cc:309
#4 0x081a3427 in Item_func::fix_fields (this=0x8d5e6f8, thd=0x8d25240, ref=0x8d5f5fc) at item_func.cc:190
#5 0x0825bc2d in setup_conds (thd=0x8d25240, tables=0x8d5e410, leaves=0x8d5e410, conds=0x8d5f5fc) at sql_base.cc:4941
...
Disabling optimisation where it would be lossy so field value will
properly get promoted and compared as binary string (rather than as
integers).
sql/sql_yacc.yy:
Rename: YYERROR_UNLESS -> YYABORT_UNLESS
yyerror doesn't have to abort of the parser, whereas this macro
does explicitly call YYABORT.
Item_func_geometry_from_text::val_str() should set null_value
in case of wrong data.
mysql-test/include/gis_generic.inc:
after merge fix
Item_func_geometry_from_text::val_str() should set null_value
in case of wrong data.
mysql-test/r/archive_gis.result:
after merge fix
Item_func_geometry_from_text::val_str() should set null_value
in case of wrong data.
mysql-test/r/gis.result:
after merge fix
Item_func_geometry_from_text::val_str() should set null_value
in case of wrong data.
mysql-test/r/innodb_gis.result:
after merge fix
Item_func_geometry_from_text::val_str() should set null_value
in case of wrong data.
mysql-test/r/ndb_gis.result:
after merge fix
Item_func_geometry_from_text::val_str() should set null_value
in case of wrong data.
mysql-test/t/gis.test:
after merge fix
Item_func_geometry_from_text::val_str() should set null_value
in case of wrong data.
sql/item_geofunc.cc:
after merge fix
Item_func_geometry_from_text::val_str() should set null_value
in case of wrong data.
into mysql.com:/home/ram/work/b23616/b23616.5.0
mysql-test/r/func_sapdb.result:
Auto merged
mysql-test/r/func_time.result:
Auto merged
mysql-test/t/func_time.test:
Auto merged
sql-common/my_time.c:
Auto merged
results)
Before this fix, the function BENCHMARK() would fail to evaluate expressions
like "(select avg(a) from t1)" in debug builds (with an assert),
or would report a time of zero in non debug builds.
The root cause is that evaluation of DECIMAL_RESULT expressions was not
supported in Item_func_benchmark::val_int().
This has been fixed by this change.
mysql-test/r/func_misc.result:
Added support for DECIMAL_RESULT in Item_func_benchmark::val_int()
mysql-test/t/func_misc.test:
Added support for DECIMAL_RESULT in Item_func_benchmark::val_int()
sql/item_func.cc:
Added support for DECIMAL_RESULT in Item_func_benchmark::val_int()
into weblab.(none):/home/marcsql/TREE/mysql-5.0-rt-merge
mysql-test/mysql-test-run.pl:
Auto merged
mysql-test/t/disabled.def:
Auto merged
server-tools/instance-manager/instance_options.cc:
Auto merged
server-tools/instance-manager/mysqlmanager.cc:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/item_cmpfunc.h:
Auto merged
sql/item_subselect.cc:
Auto merged
sql/item_subselect.h:
Auto merged
sql/sp_head.cc:
Auto merged
sql/sql_base.cc:
Auto merged
sql/sql_class.cc:
Auto merged
sql/sql_lex.cc:
Auto merged
sql/sql_lex.h:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_yacc.yy:
Auto merged
into pilot.blaudden:/home/msvensson/mysql/mysql-5.0-maint
client/mysqltest.c:
Auto merged
mysql-test/mysql-test-run.pl:
Auto merged
mysql-test/lib/mtr_misc.pl:
Auto merged
sql/mysqld.cc:
Auto merged
into pilot.blaudden:/home/msvensson/mysql/mysql-5.0-maint
BitKeeper/etc/ignore:
auto-union
client/mysqltest.c:
Auto merged
extra/comp_err.c:
Auto merged
include/my_time.h:
Auto merged
mysql-test/r/innodb.result:
Auto merged
mysql-test/r/mysqltest.result:
Auto merged
mysql-test/r/type_blob.result:
Auto merged
mysql-test/t/mysqltest.test:
Auto merged
sql/item.cc:
Auto merged
sql/item_cmpfunc.cc:
Auto merged
sql/item_cmpfunc.h:
Auto merged
sql/item_strfunc.cc:
Auto merged
sql/log.cc:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/mysqld.cc:
Auto merged
sql/set_var.cc:
Auto merged
sql/sql_class.cc:
Auto merged
sql/sql_class.h:
Auto merged
sql/sql_load.cc:
Auto merged
sql/sql_parse.cc:
Auto merged
sql/sql_select.cc:
Auto merged
sql/tztime.cc:
Auto merged
client/mysql_upgrade.c:
Manual merge
mysql-test/mysql-test-run.pl:
Manual merge
mysql-test/r/ctype_cp932.result:
Manual merge
mysql-test/r/mysqlbinlog.result:
Manual merge
mysql-test/t/ctype_cp932.test:
Manual merge
mysql-test/t/mysql.test:
Manual merge
mysql-test/t/mysqlbinlog.test:
Manual merge
into mysql.com:/nfsdisk1/lars/MERGE/mysql-5.0-merge
sql/field.cc:
Auto merged
sql/log.cc:
Auto merged
sql/slave.cc:
Auto merged
sql/sql_repl.cc:
Auto merged
sql/slave.cc:
Guard declaration of variable to avoid "unused variable" warning.
sql/sql_repl.cc:
Guard declaration of variable to avoid "unused variable" warning.
sql/ha_archive.cc:
Fixed a warning from unused computed value. This block is
only used in debug mode and changes nothing.
support-files/compiler_warnings.supp:
Disabled a warning from BDB.
