Bug #68648 [Opn->Nab]: call_user_func inside __callStatic cause segmentation fault
| From: | requinix@php.net | Date: | Wed, 24 Dec 2014 22:51:05 +0000 |
| Subject: | Bug #68648 [Opn->Nab]: call_user_func inside __callStatic cause segmentation fault | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-189188@lists.php.net to get a copy of this message | ||
Edit report at https://bugs.php.net/bug.php?id=68648&edit=1
ID: 68648
Updated by: requinix@php.net
Reported by: valentiny510 at gmail dot com
Summary: call_user_func inside __callStatic cause
segmentation fault
-Status: Open
+Status: Not a bug
Type: Bug
Package: Reproducible crash
Operating System: Windows 8 x64
PHP Version: 5.6.4
Block user comment: N
Private report: N
New Comment:
is_callable() will return true because you've implemented __callStatic. You created infinite
recursion.
method_exists() won't do that.
Previous Comments:
------------------------------------------------------------------------
[2014-12-24 15:08:20] valentiny510 at gmail dot com
Description:
------------
This piece of code make my apache to restart with status 3221225477.
One quick search on the web and find that is a segmentation fault on windows.
#define STATUS_ACCESS_VIOLATION ((NTSTATUS)0xC0000005L)
I tried different combinations, with or without namespace, etc.., but the result is always the same,
Ex:
call_user_func(array('X', $method));
call_user_func(__NAMESPACE__ . '\X::exist');
call_user_func(array(__NAMESPACE__ . '\X', 'exist'));
I guess will recursively call the same method over and over but at least php should not crash the
apache or throw something
Test script:
---------------
<?php
namespace Y;
class X
{
public static function __callStatic($method, $args) {
if (is_callable([__CLASS__, $method])) {
if (empty($args)) {
call_user_func([__CLASS__, $method]);
return;
}
call_user_func([__CLASS__, $method], join(',', $args));
return;
}
throw new Exception("The class '" . __CLASS__ . "' does not have a
method called '$method'");
}
}
var_dump(X::exist('la bla'));
Expected result:
----------------
The class 'X' does not have a method called 'exist'
Actual result:
--------------
apache shutdown and restart
------------------------------------------------------------------------
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Edit this bug report at https://bugs.php.net/bug.php?id=68648&edit=1