#43546 [NEW]: Strange behaviour after setting stream_set_blocking()

From: martzy at gmail dot com Operating system: FreeBSD 6.2-RELEASE PHP version: 5.2.5 PHP Bug Type: Streams related Bug description: Strange behaviour after setting stream_set_blocking() 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. -- Edit bug report at http://bugs.php.net/?id=43546&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=43546&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=43546&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=43546&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=43546&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=43546&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=43546&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=43546&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=43546&r=needscript Try newer version: http://bugs.php.net/fix.php?id=43546&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=43546&r=support Expected behavior: http://bugs.php.net/fix.php?id=43546&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=43546&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=43546&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=43546&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=43546&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=43546&r=dst IIS Stability: http://bugs.php.net/fix.php?id=43546&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=43546&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=43546&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=43546&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=43546&r=mysqlcfg