#50394 [NEW]: Reference argument converted to value in __call

From: Date: Mon, 07 Dec 2009 01:40:19 +0000
Subject: #50394 [NEW]: Reference argument converted to value in __call
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-145462@lists.php.net to get a copy of this message 
From:             tstarling at wikimedia dot org
Operating system: Linux
PHP version:      5.3.1
PHP Bug Type:     Scripting Engine problem
Bug description:  Reference argument converted to value in __call

Description:
------------
This is a regression in the PHP 5.3.1 release. When you call a __call()
function with a reference parameter, it is silently converted to a value,
by the time it reaches the second argument to __call().

This breaks MediaWiki and has no obvious workaround.

Reproduce code:
---------------
function foo( &$x ) {}

class Proxy {
	function __call( $name, $args ) {
		debug_zval_dump( $args );
		call_user_func_array( 'foo', $args );
	}
}

$arg = 1;
$args = array( &$arg );
$proxy = new Proxy;
call_user_func_array( array( &$proxy, 'bar' ), $args );


Expected result:
----------------
PHP 5.3.0 produces:

array(1) refcount(4){
  [0]=>
  &long(1) refcount(5)
}


Actual result:
--------------
array(1) refcount(4){
  [0]=>
  long(1) refcount(3)
}

Warning: Parameter 1 to foo() expected to be a reference, value given in
/home/tstarling/src/php/stuff/test-reference-call.php on line 8


-- 
Edit bug report at http://bugs.php.net/?id=50394&edit=1
-- 
Try a snapshot (PHP 5.2):            http://bugs.php.net/fix.php?id=50394&r=trysnapshot52
Try a snapshot (PHP 5.3):            http://bugs.php.net/fix.php?id=50394&r=trysnapshot53
Try a snapshot (PHP 6.0):            http://bugs.php.net/fix.php?id=50394&r=trysnapshot60
Fixed in SVN:                        http://bugs.php.net/fix.php?id=50394&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=50394&r=needdocs
Fixed in release:                    http://bugs.php.net/fix.php?id=50394&r=alreadyfixed
Need backtrace:                      http://bugs.php.net/fix.php?id=50394&r=needtrace
Need Reproduce Script:               http://bugs.php.net/fix.php?id=50394&r=needscript
Try newer version:                   http://bugs.php.net/fix.php?id=50394&r=oldversion
Not developer issue:                 http://bugs.php.net/fix.php?id=50394&r=support
Expected behavior:                   http://bugs.php.net/fix.php?id=50394&r=notwrong
Not enough info:                     http://bugs.php.net/fix.php?id=50394&r=notenoughinfo
Submitted twice:                     http://bugs.php.net/fix.php?id=50394&r=submittedtwice
register_globals:                    http://bugs.php.net/fix.php?id=50394&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=50394&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=50394&r=dst
IIS Stability:                       http://bugs.php.net/fix.php?id=50394&r=isapi
Install GNU Sed:                     http://bugs.php.net/fix.php?id=50394&r=gnused
Floating point limitations:          http://bugs.php.net/fix.php?id=50394&r=float
No Zend Extensions:                  http://bugs.php.net/fix.php?id=50394&r=nozend
MySQL Configuration Error:           http://bugs.php.net/fix.php?id=50394&r=mysqlcfg

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