Bug #74188 [NEW]: Null coalescing operator issue with undeclared static class properties

From: pandenitz at mail dot ru Operating system: Win 7 64 PHP version: 7.0.16 Package: Variables related Bug Type: Bug Bug description:Null coalescing operator issue with undeclared static class properties Description: ------------ Null coalescing operator doesn't check isset() for static properties Test script: --------------- abstract class Test { public static function get() { return static::$test ?? true; } public static function get2() { return isset(static::$test) ? static::$test : true; } } // Access to undeclared static property Test::get(); // Works Test::get2(); Expected result: ---------------- No errors Actual result: -------------- Error -- Edit bug report at https://bugs.php.net/bug.php?id=74188&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=74188&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=74188&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=74188&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=74188&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=74188&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=74188&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=74188&r=needscript Try newer version: https://bugs.php.net/fix.php?id=74188&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=74188&r=support Expected behavior: https://bugs.php.net/fix.php?id=74188&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=74188&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=74188&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=74188&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=74188&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=74188&r=dst IIS Stability: https://bugs.php.net/fix.php?id=74188&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=74188&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=74188&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=74188&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=74188&r=mysqlcfg