Bug #9978 MySQL crash when Natural Right Join is used with no conditions

Description:
When natural join is used between two tables, where none of the column names are same, the server crashes on its execution.

How to repeat:
1. Use test database 
Use test;

2. Create a table 't1' as follows:
	 Drop table if exists t1//
              Create table t1(f1 int,f2 int)//
              Insert into t1 values(1,10)//
              Insert into t1 values(2,20)//
             
3.Create a table say 't2' as follws:
               Drop table if exists t2// 
               Create table t2(f3 int,f4 int)//
               Insert into t2 values(12,21)//
               Insert into t2 values(23,24)// 
	       
4. Execute natural right join:
               Select * from t1 natural right join t2//

EXPECTED RESULT
+------+------+------+------+
| f1   | f2   | f3   | f4   |
+------+------+------+------+
| NULL | NULL |   12 |   21 |
| NULL | NULL |   23 |   24 |
+------+------+------+------+
2 rows in set (0.00 sec)

ACTUAL RESULT:
ERROR 2013 (HY000): Lost connection to MySQL server during query

Upated Synopsis

Tested on windows with 5.0.5.

Duplicate; see Bug#6276.

Noted fix in 5.0.12 changelog (see Bug#6276).