php.net |  support |  documentation |  report a bug |  advanced search |  search howto |  statistics |  random bug |  login

go to bug id or search bugs for

Bug #55524 Traits should not be able to extend a class
Submitted: 2011-08-28 08:05 UTC Modified: 2011-08-29 15:54 UTC
From: gron@php.net Assigned: gron (profile)
Status: Closed Package: Scripting Engine problem
PHP Version: 5.4.0alpha3 OS:
Private report: No CVE-ID: None
View Developer Edit
Welcome back! If you're the original bug submitter, here's where you can edit the bug or add additional notes.
If you forgot your password, you can retrieve your password here.
Password:
Status:
Package:
Bug Type:
Summary:
From: gron@php.net
New email:
PHP Version: OS:

 

 [2011-08-28 08:05 UTC] gron@php.net 
Description:
------------
Spotted by this post: http://zuttonet.com/articles/php-class-traits/

Traits build their own hierarchy of uses, but there is no useful semantics for 
extending classes.

For instance:


trait Foo extends Base {
    function bar() {}
}


The semantics for that is not defined (and actually at least broken for abstract 
methods).


This should give a fatal error as would the other way around (Base extends Foo).


Test script:
---------------
trait Foo extends Base {
    function bar() {}
}

Expected result:
----------------
Fatal error: A trait (Foo) cannot extend a class (Base) in %s on line %d

Patches

Pull Requests

History

AllCommentsChangesGit/SVN commitsRelated reports
 [2011-08-28 08:05 UTC] gron@php.net
-Status: Open +Status: Assigned -Assigned To: +Assigned To: gron
 [2011-08-29 01:03 UTC] kalle@php.net 
Might also be worth checking the implements keyword if a user tries to implement an interface (or multiple)
 [2011-08-29 05:13 UTC] gron@php.net 
Checking for interface is already done. As well as checking that classes do not 
extend traits. I only missed checking that traits do not extend classes, as far as 
I can tell. Plan to fix it later this week.
 [2011-08-29 08:25 UTC] good821 at 126 dot com 
http://www.officialpackersjerseyshop.com/green-bay-packers-jerseys-paul-hornung-jersey-c-11_25.html	Paul Hornung Jersey
http://www.officialpackersjerseyshop.com/green-bay-packers-jerseys-ray-nitschke-jersey-c-11_27.html	Ray Nitschke Jersey
http://www.officialpackersjerseyshop.com/green-bay-packers-jerseys-reggie-white-jersey-c-11_24.html	Reggie White Jersey
 [2011-08-29 15:53 UTC] gron@php.net 
Automatic comment from SVN on behalf of gron
Revision: http://svn.php.net/viewvc/?view=revision&revision=315712
Log: Fixed bug #55524 Traits should not be able to extend a class
# also used the Z_STRVAL where it seemed appropriate
 [2011-08-29 15:54 UTC] gron@php.net 
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/.

 For Windows:

http://windows.php.net/snapshots/
 
Thank you for the report, and for helping us make PHP better.

Fixed per svn rev 315712.
 [2011-08-29 15:54 UTC] gron@php.net
-Status: Assigned +Status: Closed
 [2012-04-18 09:49 UTC] laruence@php.net 
Automatic comment on behalf of gron
Revision: http://git.php.net/?p=php-src.git;a=commit;h=1f4dfded592909a162f4b590a25edc681e6b338d
Log: Fixed bug #55524 Traits should not be able to extend a class # also used the Z_STRVAL where it seemed appropriate
 [2012-07-24 23:40 UTC] rasmus@php.net 
Automatic comment on behalf of gron
Revision: http://git.php.net/?p=php-src.git;a=commit;h=1f4dfded592909a162f4b590a25edc681e6b338d
Log: Fixed bug #55524 Traits should not be able to extend a class # also used the Z_STRVAL where it seemed appropriate
 [2013-11-17 09:36 UTC] laruence@php.net 
Automatic comment on behalf of gron
Revision: http://git.php.net/?p=php-src.git;a=commit;h=1f4dfded592909a162f4b590a25edc681e6b338d
Log: Fixed bug #55524 Traits should not be able to extend a class # also used the Z_STRVAL where it seemed appropriate
 
PHP Copyright © 2001-2024 The PHP Group
All rights reserved. 		Last updated: Mon Oct 14 05:01:28 2024 UTC