Bug #71964 [NEW]: Pass by reference variable modification fails under certain circumstance

From: ben dot davies at gmail dot com Operating system: N/A PHP version: 7.0.5 Package: Variables related Bug Type: Bug Bug description:Pass by reference variable modification fails under certain circumstance Description: ------------ It appears that assigning variables passed by reference does not work under specific circumstances. For example in the test script, removing the switch statement in the bug function does not trigger the bug. Having a look around recent bug fixes, this is possibly a regression introduced by https://bugs.php.net/bug.php?id=71756. The test script only fails on php 7.0.5 Test script: --------------- https://3v4l.org/KB4sC Expected result: ---------------- string Actual result: -------------- @string@ -- Edit bug report at https://bugs.php.net/bug.php?id=71964&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=71964&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=71964&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=71964&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=71964&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=71964&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=71964&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=71964&r=needscript Try newer version: https://bugs.php.net/fix.php?id=71964&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=71964&r=support Expected behavior: https://bugs.php.net/fix.php?id=71964&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=71964&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=71964&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=71964&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=71964&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=71964&r=dst IIS Stability: https://bugs.php.net/fix.php?id=71964&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=71964&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=71964&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=71964&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=71964&r=mysqlcfg