From 0a29b8b08520070950186ae64ff058b3fba3c1cb Mon Sep 17 00:00:00 2001
From: "kaa@kaamos.(none)" <>
Date: Fri, 22 Feb 2008 11:34:18 +0300
Subject: Fix for bug #33049: Assert while running test-as3ap test(mysql-bench 
                    suite)

Under some circumstances a combination of aggregate functions and
GROUP BY in a SELECT query over a VIEW could lead to incorrect
calculation of the result type of the aggregate function. This in
turn could result in incorrect results, or assertion failures on debug
builds.

Fixed by changing the logic in Item_sum_hybrid::fix_fields() so that
the argument's item is dereferenced before calling its type() method.
---
 sql/item_sum.cc | 1 +
 1 file changed, 1 insertion(+)

(limited to 'sql/item_sum.cc')

diff --git a/sql/item_sum.cc b/sql/item_sum.cc
index 3d261dc2c36..47a7073c2e7 100644
--- a/sql/item_sum.cc
+++ b/sql/item_sum.cc
@@ -597,6 +597,7 @@ Item_sum_hybrid::fix_fields(THD *thd, Item **ref)
   result_field=0;
   null_value=1;
   fix_length_and_dec();
+  item= item->real_item();
   if (item->type() == Item::FIELD_ITEM)
     hybrid_field_type= ((Item_field*) item)->field->type();
   else
-- 
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