Bug #66719 [Ver->Csd]: Weird behaviour when using get_called_class() with call_user_func()
| From: | git@php.net | Date: | Fri, 23 Jul 2021 09:25:35 +0000 |
| Subject: | Bug #66719 [Ver->Csd]: Weird behaviour when using get_called_class() with call_user_func() | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-235291@lists.php.net to get a copy of this message | ||
Edit report at https://bugs.php.net/bug.php?id=66719&edit=1
ID: 66719
Updated by: git@php.net
Reported by: coolwust at gmail dot com
Summary: Weird behaviour when using get_called_class() with
call_user_func()
-Status: Verified
+Status: Closed
Type: Bug
Package: Class/Object related
Operating System: linux
PHP Version: 5.5.9
Block user comment: N
Private report: N
New Comment:
Automatic comment on behalf of nikic
Revision: https://github.com/php/php-src/commit/dfd05da97f72628c5124bfb54976d2c3a02dba82
Log: Fix bug #66719
Previous Comments:
------------------------------------------------------------------------
[2021-07-23 08:39:32] nikic@php.net
This even causes an assertion failure nowadays:
php: /home/nikic/php/php-src/Zend/zend_vm_execute.h:35335:
ZEND_GET_CALLED_CLASS_SPEC_UNUSED_UNUSED_HANDLER: Assertion
`!((execute_data)->func)->common.scope' failed.
------------------------------------------------------------------------
[2015-08-18 18:05:31] cmb@php.net
The example calls this feature "relative static class method
call", and as such it should behave identically to calling
A::who() directly, but it doesn't: <https://3v4l.org/vbuVd>.
Interestingly, calling the callable $method directly fails
completely.
------------------------------------------------------------------------
[2014-02-16 01:41:22] coolwust at gmail dot com
here is a new little test snippet:
class A
{
public static function who()
{
$obj = new static;
var_dump($obj);
}
}
class B extends A
{
public static function who()
{
parent::who();
}
}
B::who(); //output object(B)[1]
call_user_func(array('B', 'parent::who')); //output Fatal error: Cannot
access static:: when no class scope is active
This means get_called_class() does it job correctly, as it is out of scope and returns null.
However, the doc should gives more details on "parent::who"
------------------------------------------------------------------------
[2014-02-16 01:27:01] coolwust at gmail dot com
I was thinking it should output B, but yea, you are right, it simply means B's parent who, but
doesn't mention the calling scope. The documentation should show more details on parent::who,
what exactly it means.
------------------------------------------------------------------------
[2014-02-16 00:00:57] requinix@php.net
Interesting. I had no idea that feature existed. Just checked with 5.5.6 and it has the same
behavior.
Looks like a bug then as it's not showing any class at all. However I'm not sure which
class it should show: could be A if it resolved as B::parent's who, or it could be B if it
resolved as B and then parent::who.
------------------------------------------------------------------------
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