Bug #74840 [NEW]: Opcache overwrites argument of GENERATOR_RETURN within finally

From: bwoebi Operating system: Irrelevant PHP version: master-Git-2017-07-01 (Git) Package: opcache Bug Type: Bug Bug description:Opcache overwrites argument of GENERATOR_RETURN within finally Description: ------------ Within generators, the temporary argument of GENERATOR_RETURN is ignored while reindexing temporaries in a finally block. This leads to illegal reuse of a still live temporary and will leak/doubly use the temporary value returned by the generator. Test script: --------------- <?php $g = (function($a) { try { return $a + 1; } finally { $b = $a + 2; var_dump($b); } yield; // Generator })(1); $g->next(); var_dump($g->getReturn()); Expected result: ---------------- int(3) int(2) Actual result: -------------- int(3) int(3) -- Edit bug report at https://bugs.php.net/bug.php?id=74840&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=74840&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=74840&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=74840&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=74840&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=74840&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=74840&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=74840&r=needscript Try newer version: https://bugs.php.net/fix.php?id=74840&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=74840&r=support Expected behavior: https://bugs.php.net/fix.php?id=74840&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=74840&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=74840&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=74840&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=74840&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=74840&r=dst IIS Stability: https://bugs.php.net/fix.php?id=74840&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=74840&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=74840&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=74840&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=74840&r=mysqlcfg