Bug #55214 [Opn->]: use of __CLASS__ within trait returns trait name not class name

From: Date: Sun, 16 Oct 2011 18:46:10 +0000
Subject: Bug #55214 [Opn->]: use of __CLASS__ within trait returns trait name not class name
References: 1  Groups: php.bugs 
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Edit report at https://bugs.php.net/bug.php?id=55214&edit=1

 ID:                 55214
 Updated by:         gron@php.net
 Reported by:        chris dot rutledge at gmail dot com
 Summary:            use of __CLASS__ within trait returns trait name not
                     class name
-Status:             Open
+Status:             To be documented
 Type:               Bug
 Package:            Scripting Engine problem
 Operating System:   Ubuntu
 PHP Version:        5.4.0alpha1
 Block user comment: N
 Private report:     N

 New Comment:

This bug has been fixed in SVN.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.
 
Thank you for the report, and for helping us make PHP better.




Previous Comments:
------------------------------------------------------------------------
[2011-08-15 08:29:43] gron@php.net

Automatic comment from SVN on behalf of gron
Revision: http://svn.php.net/viewvc/?view=revision&revision=314921
Log: Addendum for patch to bug #55214: Class name was freed before method literal referring to it.
# Thanks to Felipe for catching this.
# The fix duplicates the name into the literal to avoid the dependency

------------------------------------------------------------------------
[2011-07-31 18:23:25] gron@php.net

Fixed in SVN per http://svn.php.net/viewvc?view=revision&revision=313997

Needs documentation: __CLASS__ gives now the class name in which the trait is eventually used.

------------------------------------------------------------------------
[2011-07-31 18:18:56] gron@php.net

Automatic comment from SVN on behalf of gron
Revision: http://svn.php.net/viewvc/?view=revision&revision=313997
Log: Fixed Bug #55214 	use of __CLASS__ within trait returns trait name not class name [TRAITS]
[DOC]

------------------------------------------------------------------------
[2011-07-24 18:31:08] gron@php.net

Ok, updated the patch and would like to ask for a review.
This is still hacky, but now I use the literals of a function to be able to clean up the zval for
the __CLASS__ name. Thus, the memory leak should be fixed.

Think we will still need a __TRAIT__ to mirror __CLASS__ and to get the trait name itself when that
is required.

The test case is missing in the patch:

--TEST--
Bug #55214 (Use of __CLASS__ within trait returns trait name not class name)
--FILE--
<?php

trait ATrait {
  public static function get_class_name() {
    return __CLASS__;
  }
  
  public function get_class_name_obj() {
    return __CLASS__;
  }
}


class SomeClass {
   use ATrait;
}

$r = SomeClass::get_class_name();
var_dump($r);

$o = new SomeClass();
$r = $o->get_class_name_obj();
var_dump($r);

?>
--EXPECT--
string(9) "SomeClass"
string(9) "SomeClass"

------------------------------------------------------------------------
[2011-07-24 18:28:16] gron@php.net

The following patch has been added/updated:

Patch Name: __CLASS__-in-traits.002.patch
Revision:   1311532096
URL:        https://bugs.php.net/patch-display.php?bug=55214&patch=__CLASS__-in-traits.002.patch&revision=1311532096

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


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