Bug #74345 [NEW]: Call trampoline leaked if callback not invoked

From: nikic Operating system: PHP version: 7.0.17 Package: Scripting Engine problem Bug Type: Bug Bug description:Call trampoline leaked if callback not invoked Description: ------------ If fci/fcc are acquired via zend_is_callable and the callback is subsequently not used, the call trampoline is leaked. The script demonstrates this using array_map() and the method name -- of course, this also affects other functions, and the trampoline itself may also be leaked. Test script: --------------- <?php class Test { public function __call($name, $args) { echo "__call()\n"; } } $name = "foo" . ($x = "bar"); array_map([new Test, $name], []); -- Edit bug report at https://bugs.php.net/bug.php?id=74345&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=74345&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=74345&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=74345&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=74345&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=74345&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=74345&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=74345&r=needscript Try newer version: https://bugs.php.net/fix.php?id=74345&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=74345&r=support Expected behavior: https://bugs.php.net/fix.php?id=74345&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=74345&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=74345&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=74345&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=74345&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=74345&r=dst IIS Stability: https://bugs.php.net/fix.php?id=74345&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=74345&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=74345&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=74345&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=74345&r=mysqlcfg