Bug #78529 [NEW]: Internal Array Pointer still points to NULL after adding element

From: philipp at atelierdisko dot de Operating system: Linux & Darwin PHP version: 7.3.9 Package: Arrays related Bug Type: Bug Bug description:Internal Array Pointer still points to NULL after adding element Description: ------------ This problem occurs in Version 7.3.0 - 7.40beta4. Steps to reproduce: 1. Have an array $a with elements and integer keys 2. Let the internal pointer point beyond the end of the elements list using next($a) 3. Set a value by key where key is lower then the lowest existing key in $a 4. Call key($a) I expect key($a) to return the key of the element I just added (like it did before 7.3.0), but it returns null. I have prepared a 3v4l script that shows the problem: https://3v4l.org/DoFve Thanks for having a look at this. I can provide more context if needed. Test script: --------------- $data = [1 => true]; next($data); var_dump(key($data)); $data[0] = true; var_dump(key($data)); Expected result: ---------------- NULL int(0) Actual result: -------------- NULL NULL -- Edit bug report at https://bugs.php.net/bug.php?id=78529&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=78529&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=78529&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=78529&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=78529&r=needscript Try newer version: https://bugs.php.net/fix.php?id=78529&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=78529&r=support Expected behavior: https://bugs.php.net/fix.php?id=78529&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=78529&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=78529&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=78529&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=78529&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=78529&r=dst IIS Stability: https://bugs.php.net/fix.php?id=78529&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=78529&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=78529&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=78529&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=78529&r=mysqlcfg