From: Phil Thompson <phil@river-bank.demon.co.uk>

I haven't had final confirmation from Peter yet, but the attached patch
needs to be applied for the Beta otherwise password and crypt
authentication just won't work.

It puts back the loop in libpq and also fixes a couple of problems with
maintaining compatability with pre-6.3 drivers.

src/interfaces/libpq/fe-connect.c

@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-connect.c,v 1.61 1998/01/29 03:24:30 scrappy Exp $
+ *	  $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-connect.c,v 1.62 1998/01/31 21:27:28 scrappy Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -584,6 +584,7 @@ connectDB(PGconn *conn)
 	 * authentication request.
 	 */
 
+	do
 	{
 		int beresp;
 
@@ -644,6 +645,7 @@ connectDB(PGconn *conn)
 					conn->errorMessage) != STATUS_OK)
 			goto connect_errReturn;
 	}
+	while (areq != AUTH_REQ_OK);
 
 	/* free the password so it's not hanging out in memory forever */
 	if (conn->pgpass != NULL)