Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:18163
Return-Path: <php-php-dev@m.gmane.org>
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Delivered-To: mailing list internals@lists.php.net
Received: (qmail 99767 invoked by uid 1010); 16 Aug 2005 10:37:07 -0000
Delivered-To: ezmlm-scan-internals@lists.php.net
Delivered-To: ezmlm-internals@lists.php.net
Received: (qmail 99752 invoked from network); 16 Aug 2005 10:37:07 -0000
Received: from unknown (HELO lists.php.net) (127.0.0.1)
  by localhost with SMTP; 16 Aug 2005 10:37:07 -0000
X-Host-Fingerprint: 80.91.229.2 main.gmane.org Linux 2.5 (sometimes 2.4) (4)
Received: from ([80.91.229.2:44529] helo=ciao.gmane.org)
	by pb1.pair.com (ecelerity 2.0 beta r(6323M)) with SMTP
	id 96/3E-33075-1D1C1034 for <internals@lists.php.net>; Tue, 16 Aug 2005 06:37:05 -0400
Received: from list by ciao.gmane.org with local (Exim 4.43)
	id 1E4yn0-0003ed-Uw
	for internals@lists.php.net; Tue, 16 Aug 2005 12:35:26 +0200
Received: from p508866bb.dip.t-dialin.net ([80.136.102.187])
	by main.gmane.org with esmtp (Gmexim 0.1 (Debian))
	id 1AlnuQ-0007hv-00
	for <internals@lists.php.net>; Tue, 16 Aug 2005 12:35:26 +0200
Received: from sb by p508866bb.dip.t-dialin.net with local (Gmexim 0.1 (Debian))
	id 1AlnuQ-0007hv-00
	for <internals@lists.php.net>; Tue, 16 Aug 2005 12:35:26 +0200
X-Injected-Via-Gmane: http://gmane.org/
To: internals@lists.php.net
Date: Tue, 16 Aug 2005 12:33:53 +0200
Lines: 62
Message-ID: <ddsfek$jag$1@sea.gmane.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-15
Content-Transfer-Encoding: 7bit
X-Gmane-NNTP-Posting-Host: p508866bb.dip.t-dialin.net
User-Agent: Mozilla Thunderbird 1.0.6 (Windows/20050716)
X-Accept-Language: de-DE, de, en-us, en
Sender: news <news@sea.gmane.org>
Subject: Segfault with spl_autoload
From: sb@sebastian-bergmann.de (Sebastian Bergmann)

 I am experiencing a segfault with spl_autoload in the PHP_5_1 branch
 with the upcoming PHPUnit 2.3.0.

 The nature of PHPUnit's complexity makes it almost impossible for me to
 come up with a simple, reproducing script (I already invested hours into
 this, to no avail so far).

 It is weird that the segfault only occurs in one out of two common
 code paths of PHPUnit's TextUI test runner.

 Furthermore, small code changes (see below) seem to make the problem
 go away:

 Segfault:

    function PHPUnit2_Util_Classloader($className) {
        print "Loading $className.\n";

        if (strpos($className, 'PHPUnit2_') !== FALSE) {
            @include(str_replace('_', '/', $className) . '.php');
        }
    }

    spl_autoload_register('PHPUnit2_Util_Classloader');

 Segfault:

    function PHPUnit2_Util_Classloader($className) {
        $bt = debug_backtrace();
        print "Loading $className.\n";

        if (strpos($className, 'PHPUnit2_') !== FALSE) {
            @include(str_replace('_', '/', $className) . '.php');
        }
    }

    spl_autoload_register('PHPUnit2_Util_Classloader');

 No Segfault:

    function PHPUnit2_Util_Classloader($className) {
        $bt = debug_backtrace();
        print_r($bt[1]);
        print "Loading $className.\n";

        if (strpos($className, 'PHPUnit2_') !== FALSE) {
            @include(str_replace('_', '/', $className) . '.php');
        }
    }

    spl_autoload_register('PHPUnit2_Util_Classloader');

 Below are the links to the results of GDB and Valgrind. Interestingly,
 when run through GDB it segfaults, when run through Valgrind it does
 not segfault.

 GDB:      http://www.sebastian-bergmann.de/stuff/phpunit2-gdb.txt
 Valgrind: http://www.sebastian-bergmann.de/stuff/phpunit2-valgrind.txt

-- 
Sebastian Bergmann                      http://www.sebastian-bergmann.de/
GnuPG Key: 0xB85B5D69 / 27A7 2B14 09E4 98CD 6277 0E5B 6867 C514 B85B 5D69