Bug #81587 [NEW]: MultipleIterator Segmentation fault w/ SimpleXMLElement attached

From: hanskrentel at yahoo dot de Operating system: Linux PHP version: 8.0.12 Package: SPL related Bug Type: Bug Bug description:MultipleIterator Segmentation fault w/ SimpleXMLElement attached Description: ------------ Since PHP 8.0 SimpleXMLElement is an Iterator and it is possibe to attach it to a MultipleIterator (TypeError earlier). Attached to a MultipleIterator and iterating the MultipleIterator makes PHP exit code 139 (interrupted by signal 11: SIGSEGV - Segmentation fault) Starting with PHP 8.1rc1 this is not an issue any longer. Test script: --------------- $mi = new MultipleIterator(); $mi->attachIterator(new SimpleXMLElement('<r/>')); $mi->rewind(); Expected result: ---------------- Process exited with code 0 Actual result: -------------- Output for 8.0.0 - 8.0.12: Process exited with code 139. https://3v4l.org/DhLc0 A workaround is available: Wrapping the SimpleXMLElement inside an IteratorIterator prevents the segmentation fault: $mi = new MultipleIterator(); $mi->attachIterator(new IteratorIterator(new SimpleXMLElement('<r/>'))); $mi->rewind(); https://3v4l.org/C962A -- Edit bug report at https://bugs.php.net/bug.php?id=81587&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=81587&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=81587&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=81587&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=81587&r=needscript Try newer version: https://bugs.php.net/fix.php?id=81587&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=81587&r=support Expected behavior: https://bugs.php.net/fix.php?id=81587&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=81587&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=81587&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=81587&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=81587&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=81587&r=dst IIS Stability: https://bugs.php.net/fix.php?id=81587&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=81587&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=81587&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=81587&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=81587&r=mysqlcfg