Bug #78667 [NEW]: Segmentation fault when using clone in jsonSerilization method

From: aparcos at gmail dot com Operating system: Debian 10 PHP version: Irrelevant Package: Class/Object related Bug Type: Bug Bug description:Segmentation fault when using clone in jsonSerilization method Description: ------------ A segmentation fault is going to happen when you accidentally uses clone inside the jsonSerialize method that implements JsonSerializable and return the new cloned object. If you uncomment the following test script, you will see that is going to be called several times until the recursive call get exhausted and finish given the segmentation fault. Test script: --------------- <?php class CloneThis implements JsonSerializable { public $date; public function jsonSerialize() { $clone = clone $this; // var_dump($this); // if ($this->date instanceof DateTime) { // $clone->date = $this->date->format('Y.m.d'); // } return $clone; } } $variable = new CloneThis; $variable->date = new DateTime(); echo json_encode($variable); Expected result: ---------------- I think should be : 1. or the current date. 2. or An error where many recursive calls are done (maybe) Actual result: -------------- //////////////////////////////// ...strings removed object(CloneThis)#52273 (1) { ["date"]=> string(10) "2019.10.12" } object(CloneThis)#52274 (1) { ["date"]=> string(10) "2019.10.12" } object(CloneThis)#52275 (1) { ["date"]=> string(10) "2019.10.12" } object(CloneThis)#52276 (1) { ["date"]=> string(10) "2019.10.12" } object(CloneThis)#52277 (1) { ["date"]=> Segment violation -- Edit bug report at https://bugs.php.net/bug.php?id=78667&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=78667&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=78667&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=78667&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=78667&r=needscript Try newer version: https://bugs.php.net/fix.php?id=78667&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=78667&r=support Expected behavior: https://bugs.php.net/fix.php?id=78667&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=78667&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=78667&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=78667&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=78667&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=78667&r=dst IIS Stability: https://bugs.php.net/fix.php?id=78667&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=78667&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=78667&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=78667&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=78667&r=mysqlcfg