item_cmpfunc.h, cast.result:

  Post fix for bug#16377

mysql-test/r/cast.result

@@ -192,7 +192,7 @@ cast("2001-1-1" as datetime) = "2001-01-01 00:00:00"
 1
 select cast("1:2:3" as TIME) = "1:02:03";
 cast("1:2:3" as TIME) = "1:02:03"
-1
+0
 select cast(NULL as DATE);
 cast(NULL as DATE)
 NULL

sql/item_cmpfunc.h

@@ -43,11 +43,8 @@ public:
   int set_compare_func(Item_bool_func2 *owner, Item_result type);
   inline int set_compare_func(Item_bool_func2 *owner_arg)
   {
-    Item_result ar= (*a)->result_as_longlong() && (*b)->const_item() ?
-                      INT_RESULT : (*a)->result_type();
-    Item_result br= (*b)->result_as_longlong() && (*a)->const_item() ?
-                      INT_RESULT : (*b)->result_type();
-    return set_compare_func(owner_arg, item_cmp_type(ar, br));
+    return set_compare_func(owner_arg, item_cmp_type((*a)->result_type(),
+                                                     (*b)->result_type()));
   }
   inline int set_cmp_func(Item_bool_func2 *owner_arg,
 			  Item **a1, Item **a2,
@@ -60,11 +57,9 @@ public:
   inline int set_cmp_func(Item_bool_func2 *owner_arg,
 			  Item **a1, Item **a2)
   {
-    Item_result ar= (*a1)->result_as_longlong() && (*a2)->const_item() ?
-                      INT_RESULT : (*a1)->result_type();
-    Item_result br= (*a2)->result_as_longlong() && (*a1)->const_item() ?
-                      INT_RESULT : (*a2)->result_type();
-    return set_cmp_func(owner_arg, a1, a2, item_cmp_type(ar, br));
+    return set_cmp_func(owner_arg, a1, a2,
+                        item_cmp_type((*a1)->result_type(),
+                                      (*a2)->result_type()));
   }
   inline int compare() { return (this->*func)(); }