Merge gkodinov@bk-internal.mysql.com:/home/bk/mysql-5.0-opt

into  magare.gmz:/home/kgeorge/mysql/autopush/B19342-5.0-opt

1 files changed, 15 insertions, 2 deletions

diff --git a/sql/item_cmpfunc.h b/sql/item_cmpfunc.h
index 47f67d0392f..b0d85ba92a1 100644
--- a/sql/item_cmpfunc.h
+++ b/sql/item_cmpfunc.h
@@ -734,7 +734,16 @@ public:
 
 class in_longlong :public in_vector
 {
-  longlong tmp;
+  /*
+    Here we declare a temporary variable (tmp) of the same type as the
+    elements of this vector. tmp is used in finding if a given value is in 
+    the list. 
+  */
+  struct packed_longlong 
+  {
+    longlong val;
+    longlong unsigned_flag;  // Use longlong, not bool, to preserve alignment
+  } tmp;
 public:
   in_longlong(uint elements);
   void set(uint pos,Item *item);
@@ -750,8 +759,12 @@ public:
   }
   void value_to_item(uint pos, Item *item)
   {
-    ((Item_int*)item)->value= ((longlong*)base)[pos];
+    ((Item_int*) item)->value= ((packed_longlong*) base)[pos].val;
+    ((Item_int*) item)->unsigned_flag= 
+      ((packed_longlong*) base)[pos].unsigned_flag;
   }
+
+  friend int cmp_longlong(void *cmp_arg, packed_longlong *a,packed_longlong *b);
 };
 
 class in_double :public in_vector