#50394 [Fbk->Opn]: Reference argument converted to value in __call (regression from 5.3.0)

From: Date: Mon, 07 Dec 2009 07:49:07 +0000
Subject: #50394 [Fbk->Opn]: Reference argument converted to value in __call (regression from 5.3.0)
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-145465@lists.php.net to get a copy of this message 
 ID:               50394
 Updated by:       jani@php.net
-Summary:          Reference argument converted to value in __call
 Reported By:      tstarling at wikimedia dot org
-Status:           Feedback
+Status:           Open
 Bug Type:         Scripting Engine problem
 Operating System: Linux
 PHP Version:      5.3.1
 New Comment:

Nevermind, I didn't notice the versioin expected result. :)


Previous Comments:
------------------------------------------------------------------------

[2009-12-07 07:47:52] jani@php.net

Regression from what version?

------------------------------------------------------------------------

[2009-12-07 01:40:18] tstarling at wikimedia dot org

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



------------------------------------------------------------------------


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