Bug #52944 [NEW]: fclose: quiet script interruption

From: Operating system: Debian-50-lenny-64 PHP version: 5.3.3 Package: *Network Functions Bug Type: Bug Bug description:fclose: quiet script interruption Description: ------------ Don't know exactly, is it bug in zlib filter or in streams, but this combination can produce a script crash without any error output. Lets take some binary data like corrupted compressed data (not every random data produce crash, so try file from my example). Use stream_socket_pair with zlib.inflate filter on the second socket, which is used for reading in my case. Use non-blocking streams. Then make exactly following sequence to produce crash: 1. write corrupted data to socket 0 2. call fread for socket 1 (returns nothing as expected, because string cannot be uncompressed) 3. call fclose for socket 0 4. try fread for socket 1 once again 5. call fclose for socket 1 - on this step scrips dies. Sorry, can't make a backtrace on a production server, because it is necessary to recompile the php. Waiting for someone to confirm the bug. Test script: --------------- <? error_reporting(E_ALL); $sockets = stream_socket_pair(STREAM_PF_UNIX, STREAM_SOCK_STREAM, STREAM_IPPROTO_IP); stream_set_blocking($sockets[0], 0); stream_set_blocking($sockets[1], 0); stream_filter_append($sockets[1], "zlib.inflate", STREAM_FILTER_READ); $in=file_get_contents("http://188.40.74.4/corrupted.gz"); $out=""; fwrite($sockets[0], $in); $out.=fread($sockets[1], 1); fclose($sockets[0]); $out.=fread($sockets[1], 1); echo "closing..."; fclose($sockets[1]); echo "done\r\n"; ?> Expected result: ---------------- Script should output "closing...done" Actual result: -------------- Script prints "closing..." but never "done" -- Edit bug report at http://bugs.php.net/bug.php?id=52944&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=52944&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=52944&r=trysnapshot53 Try a snapshot (trunk): http://bugs.php.net/fix.php?id=52944&r=trysnapshottrunk Fixed in SVN: http://bugs.php.net/fix.php?id=52944&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=52944&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=52944&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=52944&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=52944&r=needscript Try newer version: http://bugs.php.net/fix.php?id=52944&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=52944&r=support Expected behavior: http://bugs.php.net/fix.php?id=52944&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=52944&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=52944&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=52944&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=52944&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=52944&r=dst IIS Stability: http://bugs.php.net/fix.php?id=52944&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=52944&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=52944&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=52944&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=52944&r=mysqlcfg