encoded php files bug

Howdy,
I have the latest version of the encoder and optimizer installed and am running
php 4.3.2. I have a simple test script below which shows that encoded files
complain that CLASS and FUNCTION are undefined.

$ php ~/EncoderBug2-enc.php

Notice: Use of undefined constant CLASS - assumed 'CLASS' in
/home/waboring/EncoderBug2-enc.php on line 13

Notice: Use of undefined constant FUNCTION - assumed 'FUNCTION' in
/home/dl/EncoderBug2-enc.php on line 13
file=/home/waboring/EncoderBug2-enc.php, line=12, class=CLASS, func=FUNCTION

Source/test file:
<?php

class EncBug1 {

function bug1() {
    return "file=" . __FILE__ . ", line=" . __LINE__ .
        ", class=" . __CLASS__ . ", func=" . __FUNCTION__;
}

}

echo EncBug1::bug1() . "\n";

?