Bug #78014 [NEW]: Preloaded classes may depend on non-preloaded classes due to unresolved consts

From: Date: Wed, 15 May 2019 09:56:56 +0000
Subject: Bug #78014 [NEW]: Preloaded classes may depend on non-preloaded classes due to unresolved consts
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-220855@lists.php.net to get a copy of this message
From:             nikic
Operating system: 
PHP version:      master-Git-2019-05-15 (Git)
Package:          Scripting Engine problem
Bug Type:         Bug
Bug description:Preloaded classes may depend on non-preloaded classes due to unresolved consts

Description:
------------
Test scripts in
https://gist.github.com/nikic/39960cf61b18803fa522e6287cdb17cc.
Run with
-d opcache.preload=p1.php p3.php.

To make the failure more obvious, add

$r = new ReflectionClass('C');
var_dump((string) $r->getParentClass());

to p3.php, as this will trigger an assertion failure.

The problem is that class B is removed from the preload state, because
it has unresolved constants. However, class C is already linked to it.
Then, at runtime, we may replace B with a different class.


-- 
Edit bug report at https://bugs.php.net/bug.php?id=78014&edit=1
-- 
Try a snapshot (PHP 5.4):   https://bugs.php.net/fix.php?id=78014&r=trysnapshot54
Try a snapshot (PHP 5.5):   https://bugs.php.net/fix.php?id=78014&r=trysnapshot55
Try a snapshot (trunk):     https://bugs.php.net/fix.php?id=78014&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=78014&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=78014&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=78014&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=78014&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=78014&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=78014&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=78014&r=notwrong
Not enough info:            https://bugs.php.net/fix.php?id=78014&r=notenoughinfo
Submitted twice:            https://bugs.php.net/fix.php?id=78014&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=78014&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=78014&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=78014&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=78014&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=78014&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=78014&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=78014&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=78014&r=mysqlcfg



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