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Bug#14367 Partitions: crash if utf8 column

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use part_info->item_free_list instead of thd->free_list during partition function parsing


mysql-test/r/partition.result:
  Bug#14367 Partitions: crash if utf8 column
    test case
mysql-test/t/partition.test:
  Bug#14367 Partitions: crash if utf8 column
    test case
sql/item.cc:
  Bug#14367 Partitions: crash if utf8 column
    create copy of string in current mem_root to avoid memory leak
This commit is contained in:
unknown 2006-03-20 17:41:45 +04:00
parent f9dd31ca8e
commit de26416468
4 changed files with 21 additions and 1 deletions
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5
mysql-test/r/partition.result
View file

@ -557,4 +557,9 @@ t2 CREATE TABLE `t2` (
PRIMARY KEY (`a`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COMMENT='no comment' PARTITION BY KEY (a)
drop table t2;
create table t1 (s1 char(2) character set utf8)
partition by list (case when s1 > 'cz' then 1 else 2 end)
(partition p1 values in (1),
partition p2 values in (2));
drop table t1;
End of 5.1 tests

9
mysql-test/t/partition.test
View file

@ -714,4 +714,13 @@ show create table t2;
drop table t2;
#
# Bug#14367: Partitions: crash if utf8 column
#
create table t1 (s1 char(2) character set utf8)
partition by list (case when s1 > 'cz' then 1 else 2 end)
(partition p1 values in (1),
partition p2 values in (2));
drop table t1;
--echo End of 5.1 tests

5
sql/item.cc
View file

@ -647,6 +647,7 @@ Item *Item_string::safe_charset_converter(CHARSET_INFO *tocs)
{
Item_string *conv;
uint conv_errors;
char *ptr;
String tmp, cstr, *ostr= val_str(&tmp);
cstr.copy(ostr->ptr(), ostr->length(), ostr->charset(), tocs, &conv_errors);
if (conv_errors || !(conv= new Item_string(cstr.ptr(), cstr.length(),
@ -661,7 +662,9 @@ Item *Item_string::safe_charset_converter(CHARSET_INFO *tocs)
*/
return NULL;
}
conv->str_value.copy();
if (!(ptr= current_thd->memdup(cstr.ptr(), cstr.length() + 1 )))
return NULL;
conv->str_value.set(ptr, cstr.length(), cstr.charset());
/* Ensure that no one is going to change the result string */
conv->str_value.mark_as_const();
return conv;

3
sql/sql_partition.cc
View file

@ -1710,6 +1710,7 @@ bool fix_partition_func(THD *thd, const char* name, TABLE *table,
char* db_name;
partition_info *part_info= table->part_info;
ulong save_set_query_id= thd->set_query_id;
Item *thd_free_list= thd->free_list;
DBUG_ENTER("fix_partition_func");
if (part_info->fixed)
@ -1744,6 +1745,7 @@ bool fix_partition_func(THD *thd, const char* name, TABLE *table,
DBUG_RETURN(TRUE);
}
}
thd->free_list= part_info->item_free_list;
if (part_info->is_sub_partitioned())
{
DBUG_ASSERT(part_info->subpart_type == HASH_PARTITION);
@ -1853,6 +1855,7 @@ bool fix_partition_func(THD *thd, const char* name, TABLE *table,
set_up_range_analysis_info(part_info);
result= FALSE;
end:
thd->free_list= thd_free_list;
thd->set_query_id= save_set_query_id;
DBUG_PRINT("info", ("thd->set_query_id: %d", thd->set_query_id));
DBUG_RETURN(result);