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Bug #48458: simple query tries to allocate enormous amount of

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memory

The server was doing a bad class typecast causing setting of 
wrong value for the maximum number of items in an internal
structure used in equality propagation.
Fixed by not doing the wrong typecast and asserting the type
of the Item where it should be done.
This commit is contained in:
Georgi Kodinov
2009-11-09 16:09:46 +02:00
parent 154c348031
commit 48c67b2ca0
3 changed files with 32 additions and 5 deletions
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10
sql/sql_select.cc
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@ -7535,12 +7535,12 @@ static COND *build_equal_items_for_cond(THD *thd, COND *cond,
{
item_equal->fix_length_and_dec();
item_equal->update_used_tables();
set_if_bigger(thd->lex->current_select->max_equal_elems,
item_equal->members());
return item_equal;
}
else
item_equal= (Item_equal *) eq_list.pop();
set_if_bigger(thd->lex->current_select->max_equal_elems,
item_equal->members());
return item_equal;
return eq_list.pop();
}
else
{