Bug #78999 [NEW]: Cycle leak when using function result as temporary

From: nikic Operating system: PHP version: 7.4Git-2019-12-19 (Git) Package: Scripting Engine problem Bug Type: Bug Bug description:Cycle leak when using function result as temporary Description: ------------ We destroy temporaries using zval_ptr_dtor_nogc, so the root is not registered. Test script: --------------- <?php function get() { $t = new stdClass; $t->prop = $t; return $t; } var_dump(get()); -- Edit bug report at https://bugs.php.net/bug.php?id=78999&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=78999&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=78999&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=78999&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=78999&r=needscript Try newer version: https://bugs.php.net/fix.php?id=78999&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=78999&r=support Expected behavior: https://bugs.php.net/fix.php?id=78999&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=78999&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=78999&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=78999&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=78999&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=78999&r=dst IIS Stability: https://bugs.php.net/fix.php?id=78999&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=78999&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=78999&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=78999&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=78999&r=mysqlcfg