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BUG #1449: JDBC client driver bug waiting to happen

From: "Michael Robinton" <michael(at)insulin-pumpers(dot)org>
To: pgsql-bugs(at)postgresql(dot)org
Subject: BUG #1449: JDBC client driver bug waiting to happen
Date: 2005-01-28 19:34:15
Message-ID: 20050128193415.60B159A582B@www.postgresql.com (view raw or flat)
Thread:
Lists: pgsql-bugs
The following bug has been logged online:

Bug reference:      1449
Logged by:          Michael Robinton
Email address:      michael(at)insulin-pumpers(dot)org
PostgreSQL version: 7.4.6
Operating system:   linux
Description:        JDBC client driver bug waiting to happen
Details: 

if "int size" is set to 8, there is insufficient storage in "int n" to
accomodate 8 bytes of storage since jave thinks an int is 4 bytes. Since
currently no 8 byte longs are sent, this bug is not apparent.

Michael

/*
         * Receives an integer from the backend
         *
         * @param siz length of the integer in bytes
         * @return the integer received from the backend
         * @exception SQLException if an I/O error occurs
         */
        public int ReceiveInteger(int siz) throws SQLException
        {
                int n = 0;

                try
                {
                        for (int i = 0 ; i < siz ; i++)
                        {
                                int b = pg_input.read();

                                if (b < 0)
                                        throw new
PSQLException("postgresql.stream.eof", PSQLState.COMMUNICATION_ERROR);
                                n = n | (b << (8 * i)) ;

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