Bug #77903 [NEW]: ArrayIterator stops iterating after offsetSet call

From: gituser at yandex dot com Operating system: ubuntu 18.10 PHP version: 7.3.4 Package: *Programming Data Structures Bug Type: Bug Bug description:ArrayIterator stops iterating after offsetSet call Description: ------------ i use fresh xampp for linux. it looks like it works fine on earlier php versions e.g. 7.2. i.e. this is a regression. i've tested on integer indices only. maybe on other data types the behavior differs, idk sorry that i've posted a longer-than-20-lines test script, but when dealing with iterators, the *sequence* of method calls is important, that's why so much lines needed. i've done my best to keep the sample concise but it's still 30 lines long, sorry :( another (longer) test sample: https://3v4l.org/Ft0Dh Test script: --------------- <?php $a = new ArrayIterator(); $a->rewind(); var_dump($a->valid()); // false var_dump($a->current()); // null $a->offsetSet(1,1); var_dump($a->valid()); // true var_dump($a->current()); // 1 $a->next(); var_dump($a->valid()); // false var_dump($a->current()); // null $a->offsetSet(4,4); var_dump($a->valid()); // true var_dump($a->current()); // should: 4; got: undefined value of 'unknown' data type $a->next(); var_dump($a->valid()); // should: false; got: true var_dump($a->current()); // should: null; got: 4 $a->next(); var_dump($a->valid()); // false var_dump($a->current()); // null $a->offsetSet(2,2); var_dump($a->valid()); // should: true; got: false var_dump($a->current()); // should: 2; got: null $a->next(); var_dump($a->valid()); // false var_dump($a->current()); // null $a->next(); var_dump($a->valid()); // false var_dump($a->current()); // null // it'll never return the "2" Expected result: ---------------- has to be: $i->valid() === false $i->current() === null $i->offsetSet(4,4) $i->valid() === true $i->current() === 4 see comments in test sample code for details Actual result: -------------- actually is: (the last line) $i->current() === undefined value of unknown data type -- Edit bug report at https://bugs.php.net/bug.php?id=77903&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=77903&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=77903&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=77903&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=77903&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=77903&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=77903&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=77903&r=needscript Try newer version: https://bugs.php.net/fix.php?id=77903&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=77903&r=support Expected behavior: https://bugs.php.net/fix.php?id=77903&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=77903&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=77903&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=77903&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=77903&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=77903&r=dst IIS Stability: https://bugs.php.net/fix.php?id=77903&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=77903&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=77903&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=77903&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=77903&r=mysqlcfg