Bug #69747 [NEW]: recursive invocation of call_user_func loses object state

From: remyfox at hotmail dot com Operating system: Windows 8 PHP version: 5.6.9 Package: Unknown/Other Function Bug Type: Bug Bug description:recursive invocation of call_user_func loses object state Description: ------------ Calling call_user_func(_array) more than one level deep will no longer take into account the callback object's state. E.g. call_user_func("call_user_func", $callback); I am not entirely certain this is a bug: after all, usually once a function is called, an object's environment is left. However, call_user_func seems to be the exception to this rule, because the function would lose its significance otherwise. Test script: --------------- Anyway, class A { private function z() { echo __METHOD__; } public function x() { $callback = [[new $this(), "z"], []]; $callback[0](...$callback[1]); } } (new A())->x(); // This works fine and can be rewritten to: class A { private function z() { echo __METHOD__; } public function x() { $callback = [[new $this(), "z"], []]; call_user_func_array("call_user_func_array", $callback); } } (new A())->x(); Warning: call_user_func_array() expects parameter 1 to be a valid callback, cannot access private method A::z() in FILE. Expected result: ---------------- Stacked invocation of call_user_func(_array) should not leave the callback object's state. Actual result: -------------- Stacked invocation of call_user_func(_array) leaves the callback object's state. -- Edit bug report at https://bugs.php.net/bug.php?id=69747&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=69747&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=69747&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=69747&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=69747&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=69747&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=69747&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=69747&r=needscript Try newer version: https://bugs.php.net/fix.php?id=69747&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=69747&r=support Expected behavior: https://bugs.php.net/fix.php?id=69747&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=69747&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=69747&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=69747&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=69747&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=69747&r=dst IIS Stability: https://bugs.php.net/fix.php?id=69747&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=69747&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=69747&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=69747&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=69747&r=mysqlcfg