FULL PRODUCT VERSION :
java version "1.6.0"
Java(TM) SE Runtime Environment (build 1.6.0-b105)
Java HotSpot(TM) Client VM (build 1.6.0-b105, mixed mode, sharing)


ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [version 5.1.2600]


A DESCRIPTION OF THE PROBLEM :
Javadoc for ResultSet.close() said "Calling the method close on a ResultSet object that is already closed is a no-op."

http://java.sun.com/javase/6/docs/api/java/sql/ResultSet.html#close()

However, calling it twice in a ResultSet implemented by the JDBC-ODBC bridge cause a "SQLException" on the second call.


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the following program. This program use the EPSG database (freely downloadable at http://www.epsg.org/Geodetic.html) as a test, registered un the "ODBC source" control panel under the name "EPSG". But any database should fit for the test.

ACTUAL -
The stack trace below.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
Exception in thread "main" java.sql.SQLException: ResultSet is closed
        at sun.jdbc.odbc.JdbcOdbcResultSet.checkOpen(JdbcOdbcResultSet.java:6650)
        at sun.jdbc.odbc.JdbcOdbcResultSet.clearWarnings(JdbcOdbcResultSet.java:1767)
        at sun.jdbc.odbc.JdbcOdbcResultSet.close(JdbcOdbcResultSet.java:1470)
        at Test.main(Test.java:11)


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.sql.*;

public class Test {
    public static void main(String[] args) throws Exception {
        Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        Connection c = DriverManager.getConnection("jdbc:odbc:EPSG");
        try {
            Statement s = c.createStatement();
            ResultSet r = s.executeQuery("SELECT * FROM Alias");
            r.close();
            r.close(); // Crash here
        } finally {
            c.close();
        }
    }
}

---------- END SOURCE ----------