Bug #73751 [NEW]: 7.1.0 changed behaviour of &$this when used in callback

From: jamesin dot hongkong dot 1 at gmail dot com Operating system: PHP version: 7.1.0 Package: *General Issues Bug Type: Bug Bug description:7.1.0 changed behaviour of &$this when used in callback Description: ------------ https://3v4l.org/vMc1N contains the sample code where &$this as part of the callback invocation: ``` Hooks::run( 'foo', array( &$this, &$var ) ); ``` causes a "Warning: Parameter 1 to {closure}() expected to be a reference, value given" on 7.1.0. Running the provided sample code on 5.3.0 - 5.6.25, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.0.10 works as expected. Re-declaring $this will pass on 7.1.0 and 5.3.0 - 5.6.25, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.0.10. ``` $foo = $this; Hooks::run( 'foo', array( &$foo, &$var ) ); ``` Test script: --------------- https://3v4l.org/vMc1N -- Edit bug report at https://bugs.php.net/bug.php?id=73751&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=73751&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=73751&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=73751&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=73751&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=73751&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=73751&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=73751&r=needscript Try newer version: https://bugs.php.net/fix.php?id=73751&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=73751&r=support Expected behavior: https://bugs.php.net/fix.php?id=73751&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=73751&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=73751&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=73751&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=73751&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=73751&r=dst IIS Stability: https://bugs.php.net/fix.php?id=73751&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=73751&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=73751&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=73751&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=73751&r=mysqlcfg