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Bug #45989 take 2 : memory leak after explain encounters an

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error in the query.

Fixes a leak after materializing a GROUP BY subquery to a 
temp table when the subquery has a blob column in the SELECT
list.
Fixed by correctly destructing temporary buffers after doing
the conversion.
This commit is contained in:
Georgi Kodinov
2010-01-18 17:50:46 +02:00
parent 22cff39274
commit a3b4065d90
3 changed files with 31 additions and 0 deletions
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2
sql/sql_select.cc
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@ -5824,6 +5824,8 @@ JOIN::make_simple_join(JOIN *parent, TABLE *tmp_table)
const_table_map= 0;
tmp_table_param.field_count= tmp_table_param.sum_func_count=
tmp_table_param.func_count= 0;
if (tmp_table_param.copy_field)
delete [] tmp_table_param.copy_field;
tmp_table_param.copy_field= tmp_table_param.copy_field_end=0;
first_record= sort_and_group=0;
send_records= (ha_rows) 0;