Description:
------------
When running a PHP script as CLI, after setting stream_set_blocking($x,0), invoking an infinite loop which includes a print statement causes spontaneous script termination after an indeterminate number of iterations.

Omitting stream_set_blocking() eliminates the problem.

Tested and confirmed this behaviour on PHP 5.2.3 and PHP 5.2.5 on several FreeBSD systems.

Reproduce code:
---------------
This works as expected:

<?php

stream_set_blocking(STDIN,0);

do {

} while(TRUE);

?>


However, after introducing a print statement to the loop, the script appears to spontaneously terminate after a number of iterations.

<?php

stream_set_blocking(STDIN,0);

do {
        print "!";
} while(TRUE);

?>



Expected result:
----------------
Script should loop indefinately.

Actual result:
--------------
Script terminates on it's own. Any code following the loop is not executed.