Bug #77263 [NEW]: Segfaullt when using 2 RecursiveFilterIterator

From: Date: Fri, 07 Dec 2018 16:03:10 +0000
Subject: Bug #77263 [NEW]: Segfaullt when using 2 RecursiveFilterIterator
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-218317@lists.php.net to get a copy of this message
From:             yani at iliev dot me
Operating system: Any
PHP version:      7.3.0
Package:          Reproducible crash
Bug Type:         Bug
Bug description:Segfaullt when using 2 RecursiveFilterIterator

Description:
------------
When two RecursiveFilterIterator are added to RecursiveDirectoryIterator
it results in a segfault. The same code works in PHP 7.2.x and below

Test script:
---------------
<?php

mkdir("/tmp/dir");
mkdir("/tmp/dir/subdir");
touch("/tmp/dir/file1");
touch("/tmp/dir/subdir/file2");

class Filter1 extends RecursiveFilterIterator {
    public function accept() { return
$this->getInnerIterator()->getSubPathname() != ''; }
}

class Filter2 extends RecursiveFilterIterator {
    public function accept() { return
$this->getInnerIterator()->getSubPathname() != ' '; }
}

$iterator = new RecursiveDirectoryIterator( '/tmp',
FilesystemIterator::SKIP_DOTS );

$iterator = new Filter1( $iterator );

$iterator = new Filter2( $iterator );

$iterator = new RecursiveIteratorIterator( $iterator,
RecursiveIteratorIterator::LEAVES_ONLY,
RecursiveIteratorIterator::CATCH_GET_CHILD );

foreach ( $iterator as $item ) {
    echo  $iterator->getSubPathName() . PHP_EOL;
}

Expected result:
----------------
dir/file1
dir/subdir/file2

Actual result:
--------------
dir/file1

Process exited with code 139.

-- 
Edit bug report at https://bugs.php.net/bug.php?id=77263&edit=1
-- 
Try a snapshot (PHP 5.4):   https://bugs.php.net/fix.php?id=77263&r=trysnapshot54
Try a snapshot (PHP 5.5):   https://bugs.php.net/fix.php?id=77263&r=trysnapshot55
Try a snapshot (trunk):     https://bugs.php.net/fix.php?id=77263&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=77263&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=77263&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=77263&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=77263&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=77263&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=77263&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=77263&r=notwrong
Not enough info:            https://bugs.php.net/fix.php?id=77263&r=notenoughinfo
Submitted twice:            https://bugs.php.net/fix.php?id=77263&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=77263&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=77263&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=77263&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=77263&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=77263&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=77263&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=77263&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=77263&r=mysqlcfg



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