Bug #68191 [NEW]: Broken reference across objects

From: miloslav dot hula at gmail dot com Operating system: Linux PHP version: master-Git-2014-10-08 (Git) Package: Scripting Engine problem Bug Type: Bug Bug description:Broken reference across objects Description: ------------ I'm trying code on PHP commit 51c90e999fabda0cc10b82e0617e6e45797bf81d. With the latest I get SIGSEGV. Following code works with PHP 5.0.0 - 5.6.1 (http://3v4l.org/Lc1QW). Workaround in method Bar::modify(): $this->prop = $this->prop . 'xxx'; Test script: --------------- class Foo { private $var; public function buggy() { $bar = new Bar; $bar->prop = & $this->var; $bar->modify(); var_dump($this->var); } } class Bar { public $prop; public function modify() { $this->prop .= 'xxx'; } } $o = new Foo; $o->buggy(); Expected result: ---------------- string(3) "xxx" Actual result: -------------- NULL -- Edit bug report at https://bugs.php.net/bug.php?id=68191&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=68191&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=68191&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=68191&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=68191&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=68191&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=68191&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=68191&r=needscript Try newer version: https://bugs.php.net/fix.php?id=68191&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=68191&r=support Expected behavior: https://bugs.php.net/fix.php?id=68191&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=68191&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=68191&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=68191&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=68191&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=68191&r=dst IIS Stability: https://bugs.php.net/fix.php?id=68191&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=68191&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=68191&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=68191&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=68191&r=mysqlcfg