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Bug #78989 Delayed variance check involving trait segfaults
Submitted: 2019-12-18 09:48 UTC Modified: -
From: nikic@php.net Assigned:
Status: Closed Package: Scripting Engine problem
PHP Version: 7.4Git-2019-12-18 (Git) OS:
Private report: No CVE-ID: None
 [2019-12-18 09:48 UTC] nikic@php.net
Description:
------------
Delayed variance checks may crash when traits are involved. I believe this is because we keep around a zend_function pointer to a zend_function that only exists temporarily.

Test script:
---------------
<?php
class X {
    function method($a): T {}
}
trait T {
    function method($r): B {}
}
class U extends X {
    use T;
}



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AllCommentsChangesGit/SVN commitsRelated reports
 [2020-01-28 09:45 UTC] nikic@php.net
Automatic comment on behalf of nikita.ppv@gmail.com
Revision: http://git.php.net/?p=php-src.git;a=commit;h=1146bdb9b21cdf725dd5ea8882221356779926b6
Log: Fixed bug #78989
 [2020-01-28 09:45 UTC] nikic@php.net
-Status: Open +Status: Closed
 
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