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BUG#21477 "memory overruns for certain kinds of subqueries":

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make st_select_lex::setup_ref_array() take into account that 
Item_sum-descendant objects located within descendant SELECTs
may be added into ref_pointer_array.


sql/item_sum.cc:
  BUG#21477 "memory overruns for certain kinds of subqueries":
  Make SELECT_LEX::n_sum_items contain # of Item_sum-derived objects
  that exist within this SELECT.
sql/sql_lex.h:
  BUG#21477 "memory overruns for certain kinds of subqueries":
  Add SELECT_LEX::n_sum_items and SELECT_LEXT::n_child_sum_items.
sql/sql_yacc.yy:
  BUG#21477 "memory overruns for certain kinds of subqueries":
  Make SELECT_LEX::n_sum_items contain # of Item_sum-derived objects
  that exist within this SELECT.
This commit is contained in:
unknown
2006-09-01 13:23:43 +04:00
parent f40b6c273c
commit dd6dc7adea
4 changed files with 16 additions and 6 deletions
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8
sql/sql_lex.cc
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@ -1521,10 +1521,10 @@ bool st_select_lex::setup_ref_array(THD *thd, uint order_group_num)
*/
Query_arena *arena= thd->stmt_arena;
return (ref_pointer_array=
(Item **)arena->alloc(sizeof(Item*) *
(item_list.elements +
select_n_having_items +
order_group_num)* 5)) == 0;
(Item **)arena->alloc(sizeof(Item*) * (n_child_sum_items +
item_list.elements +
select_n_having_items +
order_group_num)*5)) == 0;
}