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Bug #73759 segment fault when register_shutdown_function callback invoked
Submitted: 2016-12-16 14:12 UTC Modified: 2017-01-08 00:50 UTC
Votes:1
Avg. Score:4.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:1 (100.0%)
Same OS:0 (0.0%)
From: yywangzheng at 126 dot com Assigned: nikic (profile)
Status: Closed Package: Scripting Engine problem
PHP Version: 5.6.29 OS: centos 7.1
Private report: No CVE-ID: None
 [2016-12-16 14:12 UTC] yywangzheng at 126 dot com
Description:
------------
//----------- main.php -----------
<?php
spl_autoload_register(function($class) {
    if ($class === 'MyClass') {
        include __DIR__ . '/MyClass.php';
    }
});
register_shutdown_function(function() {
    new MyClass;
});
require './error.php';

//----------- error.php -----------
<?php
$x = ['x'];
foreach ($x as $i) {
    $y[];
}

//----------- MyClass.php -----------
<?php
class MyClass {}

Expected result:
----------------
output:

PHP Fatal error:  Cannot use [] for reading in /Users/mike/bug/error.php on line 4

Fatal error: Cannot use [] for reading in /Users/mike/bug/error.php on line 4

Actual result:
--------------
output:
PHP Fatal error:  Cannot use [] for reading in /Users/mike/bug/error.php on line 4

Fatal error: Cannot use [] for reading in /Users/mike/bug/error.php on line 4
Segmentation fault: 11

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History

AllCommentsChangesGit/SVN commitsRelated reports
 [2016-12-20 06:33 UTC] laruence@php.net
-Status: Open +Status: Analyzed
 [2016-12-20 06:33 UTC] laruence@php.net
complier error leave CG(foreach_copy_stack) an unclean state, which cause the segfault in later try to complier MyClass.php(via autoloading).
 [2017-01-08 00:50 UTC] nikic@php.net
-Status: Analyzed +Status: Closed -Assigned To: +Assigned To: nikic
 [2017-01-08 00:50 UTC] nikic@php.net
Closing as this is fixed in PHP 7 (see https://3v4l.org/pnZHQ), while PHP 5.x is going out of active support.
 
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