[PHP-BUG] Bug #72108 [NEW]: switchs break foreach byref with arrays

From:             php at darkain dot com
Operating system: Debian 8.2
PHP version:      7.0.5
Package:          PHP Language Specification
Bug Type:         Bug
Bug description:switchs break foreach byref with arrays

Description:
------------
As shown in the test script, when a switch statement is used on a byref
variable from a foreach, the reference is lost, and it changes to byval
instead. 

This regression was introduced in 7.0.5, and worked perfectly otherwise
in previous builds of 7.0.x, 5.6, and HHVM

https://3v4l.org/eg1oT

Test script:
---------------
$array = ['broken'];

foreach($array as &$values) {
	switch ($values) {
		case 'broken':
			$values = 'WORKING';
		break;
	}
}

var_dump($array);

Expected result:
----------------
array(1) {
  [0]=>
  &string(7) "WORKING"
}

Actual result:
--------------
array(1) {
  [0]=>
  string(6) "broken"
}

-- 
Edit bug report at https://bugs.php.net/bug.php?id=72108&edit=1
-- 
Try a snapshot (PHP 5.4):   https://bugs.php.net/fix.php?id=72108&r=trysnapshot54
Try a snapshot (PHP 5.5):   https://bugs.php.net/fix.php?id=72108&r=trysnapshot55
Try a snapshot (trunk):     https://bugs.php.net/fix.php?id=72108&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=72108&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=72108&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=72108&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=72108&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=72108&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=72108&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=72108&r=notwrong
Not enough info:            https://bugs.php.net/fix.php?id=72108&r=notenoughinfo
Submitted twice:            https://bugs.php.net/fix.php?id=72108&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=72108&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=72108&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=72108&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=72108&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=72108&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=72108&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=72108&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=72108&r=mysqlcfg