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
