Bug #54910 [NEW]: Crash when calling call_user_func with unknown function name

From: Operating system: Ubuntu 11.04 PHP version: 5.3.6 Package: Reproducible crash Bug Type: Bug Bug description:Crash when calling call_user_func with unknown function name Description: ------------ Firstly the function is_callable(array('B', 'noSuchMethod')) returns true even such static method does not exist. This could be caused by class A having magic method __call (which shouldn't accept static methods though). Still because of this the code fails with segmentation fault. Test script: --------------- class A { public function __call($method, $args) { if (stripos($method, 'get') === 0) { return $this->get(); } throw new BadMethodCallException("No such method"); } protected function get() { $class = get_class($this); $call = array($class, 'noSuchMethod'); if (is_callable($call)) { call_user_func($call); } } } class B extends A {} $input = new B(); echo $input->getEmail(); Expected result: ---------------- Script should end with no output. Actual result: -------------- Segmentation fault. -- Edit bug report at http://bugs.php.net/bug.php?id=54910&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=54910&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=54910&r=trysnapshot53 Try a snapshot (trunk): http://bugs.php.net/fix.php?id=54910&r=trysnapshottrunk Fixed in SVN: http://bugs.php.net/fix.php?id=54910&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=54910&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=54910&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=54910&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=54910&r=needscript Try newer version: http://bugs.php.net/fix.php?id=54910&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=54910&r=support Expected behavior: http://bugs.php.net/fix.php?id=54910&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=54910&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=54910&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=54910&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=54910&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=54910&r=dst IIS Stability: http://bugs.php.net/fix.php?id=54910&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=54910&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=54910&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=54910&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=54910&r=mysqlcfg