Bug #77216 [NEW]: recursive generator crash PHP

From: dams Operating system: Irrelevant PHP version: 7.3.0RC6 Package: Reproducible crash Bug Type: Bug Bug description:recursive generator crash PHP Description: ------------ When a generator calls itself (what an idea), PHP crashes. Test script: --------------- <?php function generator($n) { foreach(generator($n) as $l) { yield $l; } } foreach(generator(10) as $l) { print $l; } // Also https://3v4l.org/8FXB3 Expected result: ---------------- No crash, please. Can I ask for recursive generators? No? Well, A warning or a nice fail will do. Actual result: -------------- Segmentation fault: 11 On OSX Process exited with code 139. On linux. -- Edit bug report at https://bugs.php.net/bug.php?id=77216&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=77216&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=77216&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=77216&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=77216&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=77216&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=77216&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=77216&r=needscript Try newer version: https://bugs.php.net/fix.php?id=77216&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=77216&r=support Expected behavior: https://bugs.php.net/fix.php?id=77216&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=77216&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=77216&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=77216&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=77216&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=77216&r=dst IIS Stability: https://bugs.php.net/fix.php?id=77216&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=77216&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=77216&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=77216&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=77216&r=mysqlcfg