Bug #75237 [NEW]: jsonSerialize() - Returning new instance of self causes segfault

From: sammyk Operating system: macOS 10.12.6 PHP version: Irrelevant Package: JSON related Bug Type: Bug Bug description:jsonSerialize() - Returning new instance of self causes segfault Description: ------------ You can easily create a segfault in jsonSerialize() by returning a new instance of self. You can see this affects all actively supported versions of PHP here: https://3v4l.org/tLMv6 I'm working on a patch and will be submitting it as a PR soon. :) Test script: --------------- <?php class Foo implements JsonSerializable { public function jsonSerialize() { return new self; } } var_dump(json_encode(new Foo)); Expected result: ---------------- We'd should see a fatal error raised on an exception thrown. Actual result: -------------- Segmentation fault. Doh! -- Edit bug report at https://bugs.php.net/bug.php?id=75237&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=75237&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=75237&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=75237&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=75237&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=75237&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=75237&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=75237&r=needscript Try newer version: https://bugs.php.net/fix.php?id=75237&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=75237&r=support Expected behavior: https://bugs.php.net/fix.php?id=75237&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=75237&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=75237&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=75237&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=75237&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=75237&r=dst IIS Stability: https://bugs.php.net/fix.php?id=75237&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=75237&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=75237&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=75237&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=75237&r=mysqlcfg