#45434 [NEW]: circular reference causes segfault in gc_collect_cycles()

From: php at benjaminschulz dot com Operating system: linux, osx PHP version: 5.3CVS-2008-07-04 (CVS) PHP Bug Type: Reproducible crash Bug description: circular reference causes segfault in gc_collect_cycles() Description: ------------ A circular reference causes gc_collect_cycles() to segfault. I know there is another bug that looks similar (#36482) but i think this is a far better (because simpler) test case. Reproduce code: --------------- <?php class foo { public $foo; public function __destruct() { throw new Exception("foobar"); } } $f1 = new foo; $f2 = new foo; $f1->foo = $f2; $f2->foo = $f1; unset($f1, $f2); // triggers a segfault gc_collect_cycles(); Actual result: -------------- $ php test.php Segmentation fault -- Edit bug report at http://bugs.php.net/?id=45434&edit=1 -- Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=45434&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=45434&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=45434&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=45434&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=45434&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=45434&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=45434&r=needscript Try newer version: http://bugs.php.net/fix.php?id=45434&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=45434&r=support Expected behavior: http://bugs.php.net/fix.php?id=45434&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=45434&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=45434&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=45434&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=45434&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=45434&r=dst IIS Stability: http://bugs.php.net/fix.php?id=45434&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=45434&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=45434&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=45434&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=45434&r=mysqlcfg