#27992 [NEW]: Resource Leak

From: sean@php.net Operating system: Linux (any) PHP version: 4.3.6RC3 PHP Bug Type: Class/Object related Bug description: Resource Leak Description: ------------ See the attached code; it has been isolated from PEAR (core) and PEAR::Net_Socket. Basically, after a certain number of iterations (Linux, PHP4.3.4 and 4.3.6RC3, likely others), PHP runs out of file resources. Warning: fsockopen(): unable to connect to 192.168.100.51:80 in /home/sean/www/dev3/crashing_resources.php on line 51 ERROR: 24 - Too many open files This SEEMS to be a leak (file handles are never closed?) in method_exists, get_classname or get_parent_classname, because if I remove the ShrunkenPEAR constructor (OR, the _ShrunkenPEAR method), the code does not fail. Additionally, if I instanciate ShrunkenSocket as $sock = new ShrunkenSocket() (value instead of reference), the error is also absent. The reason I'm using a reference: PEAR::HTTP_Request instanciates Net_Socket as such. Also, as mentioned in a comment in the code, if I change the die to an echo, the script segfaults after ~65535 iterations (which seems like an overflow problem). ** Note: this was originally posted to internals@ (PHP-DEV), but did not get a response.** This COULD be a critical overflow problem (when segfaulting), but I don't know enough about the matter to declare it so. Reproduce code: --------------- http://sean.caedmon.net/php/crashing_resources.phps Expected result: ---------------- (see description) Actual result: -------------- (see description) -- Edit bug report at http://bugs.php.net/?id=27992&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=27992&r=trysnapshot4 Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=27992&r=trysnapshot5 Fixed in CVS: http://bugs.php.net/fix.php?id=27992&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=27992&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=27992&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=27992&r=needscript Try newer version: http://bugs.php.net/fix.php?id=27992&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=27992&r=support Expected behavior: http://bugs.php.net/fix.php?id=27992&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=27992&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=27992&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=27992&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=27992&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=27992&r=dst IIS Stability: http://bugs.php.net/fix.php?id=27992&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=27992&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=27992&r=float