Bug #73629 [NEW]: SplDoublyLinkedList::setIteratorMode masks intern flags

From: j dot jeising at gmail dot com Operating system: PHP version: 7.1Git-2016-11-30 (Git) Package: SPL related Bug Type: Bug Bug description:SplDoublyLinkedList::setIteratorMode masks intern flags Description: ------------ When SplDoublyLinkedList::setIteratorMode is called it overwrites its internal flag SPL_DLLIST_IT_FIX. This allows mode changes for SplStack/SplQueue which otherwise would result in an exception. This is different from #63175, as it is not related to user defined flags. A proposed patch is attached. Test script: --------------- <?php $q = new SplQueue(); $q->setIteratorMode(SplDoublyLinkedList::IT_MODE_FIFO); $q->setIteratorMode(SplDoublyLinkedList::IT_MODE_LIFO); $r = new SplQueue(); $r->setIteratorMode(SplDoublyLinkedList::IT_MODE_LIFO); Expected result: ---------------- RuntimeException: Iterators' LIFO/FIFO modes for SplStack/SplQueue objects are frozen in test.php on line 5 RuntimeException: Iterators' LIFO/FIFO modes for SplStack/SplQueue objects are frozen in test.php on line 8 Actual result: -------------- RuntimeException: Iterators' LIFO/FIFO modes for SplStack/SplQueue objects are frozen in test.php on line 8 -- Edit bug report at https://bugs.php.net/bug.php?id=73629&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=73629&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=73629&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=73629&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=73629&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=73629&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=73629&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=73629&r=needscript Try newer version: https://bugs.php.net/fix.php?id=73629&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=73629&r=support Expected behavior: https://bugs.php.net/fix.php?id=73629&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=73629&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=73629&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=73629&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=73629&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=73629&r=dst IIS Stability: https://bugs.php.net/fix.php?id=73629&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=73629&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=73629&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=73629&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=73629&r=mysqlcfg