Textpattern CMS

#13 2007-12-12 13:17:22

wet

Developer Emeritus

From: Schoerfling, Austria

Registered: 2005-06-06

Posts: 3,330

Website Mastodon

Re: [issue] Running site in debugging mode gives internal server error

I can confirm this bug, and also the healing powers of Steve’s workaround

$callers = get_caller(10);
print "\n<pre style=\"padding-left: 2em;\" class=\"backtrace\"><code>".escape_output( join( "\n", $callers ) )."</code></pre>";

for

Apache/1.3.33 (Debian GNU/Linux) FrontPage/5.0.2.2623 mod_ssl/2.8.10 OpenSSL/0.9.7 PHP/5.2.3

EDIT: Bug does not occur with PHP 4.4.7, does occur with PHP 5.2.3 on two distinct hosts.

Last edited by wet (2007-12-12 13:27:37)

#14 2007-12-12 14:21:57

net-carver

Archived Plugin Author

Registered: 2006-03-08

Posts: 1,648

Re: [issue] Running site in debugging mode gives internal server error

Robert

just wondering if php is running as a cgi on those hosts?

---

— Steve

#15 2007-12-12 14:27:39

wet

Developer Emeritus

From: Schoerfling, Austria

Registered: 2005-06-06

Posts: 3,330

Website Mastodon

Re: [issue] Running site in debugging mode gives internal server error

One runs as CGI, the other runs as an Apache module.

#16 2007-12-12 15:06:58

net-carver

Archived Plugin Author

Registered: 2006-03-08

Posts: 1,648

Re: [issue] Running site in debugging mode gives internal server error

Ruud, Robert, Mary

searching the textpattern source code shows similar patterns that may trigger this error in other places.

1. @include/txp_plugin.php@ in plugin_verify() (I’ve checked this and textpattern survives fine.)
2. lib/txplib_db.php in safe_query() (fail path makes a similar call)
3. lib/txplib_misc.php in pluginErrorHandler() and assert_int()

That’s from a txp4.0.5 install but not from svn; so Ruud’s recent feed handler wasn’t covered.

---

— Steve

#17 2007-12-12 15:37:10

ruud

Developer Emeritus

From: a galaxy far far away

Registered: 2006-06-04

Posts: 5,068

Website

Re: [issue] Running site in debugging mode gives internal server error

Does this also occur in PHP 5.2.4 or 5.2.5?
I mean, if we can’t rely on join() working properly when it is fed a simple array, we might as well dump PHP and switch to a different language.

#18 2007-12-12 15:41:59

wet

Developer Emeritus

From: Schoerfling, Austria

Registered: 2005-06-06

Posts: 3,330

Website Mastodon

Re: [issue] Running site in debugging mode gives internal server error

Does not occur on my localhost (XAMPP, Apache2, PHP 5.2.4). I do not have access to any PHP 5.2.4++ install “in the wild”.

#19 2007-12-12 15:47:21

net-carver

Archived Plugin Author

Registered: 2006-03-08

Posts: 1,648

Re: [issue] Running site in debugging mode gives internal server error

Ruud

Sorry, I don’t have access to anything higher than 5.2.3 without pulling the source code and learning how to build it myself. As it’s just about midnight here I don’t intend going through that learning curve today :)

I mean, if we can’t rely on join() working properly when it is fed a simple array, we might as well dump PHP and switch to a different language.

I feel the pain there too. Perhaps the news isn’t so bad. <g> It seems the problem is limited to cases where the second is an array directly returned by a function. Thankfully there are just a few of these cases in the source.

---

— Steve

#20 2007-12-12 15:52:46

wet

Developer Emeritus

From: Schoerfling, Austria

Registered: 2005-06-06

Posts: 3,330

Website Mastodon

Re: [issue] Running site in debugging mode gives internal server error

This one was fixed in 5.2.4. Looks familiar…

#21 2007-12-13 08:22:54

Mary

Sock Enthusiast

Registered: 2004-06-27

Posts: 6,236

Re: [issue] Running site in debugging mode gives internal server error

I mean, if we can’t rely on join() working properly when it is fed a simple array, we might as well dump PHP and switch to a different language.

I vote for pig latin.

Works correctly for me on my local setup: PHP 5.2.5, Apache 2 module, Windows.

#22 2007-12-13 16:11:09

net-carver

Archived Plugin Author

Registered: 2006-03-08

Posts: 1,648

Re: [issue] Running site in debugging mode gives internal server error

Mary wrote:

I vote for pig latin. Works correctly for me on my local setup: PHP 5.2.5, Apache 2 module, Windows.

Sounds more acceptable than developing with Klingon bite-code, especially on Windows.

---

— Steve

#23 2008-01-08 20:36:20

variaas

Plugin Author

From: Chicago

Registered: 2005-01-16

Posts: 402

Website

Re: [issue] Running site in debugging mode gives internal server error

From a seperate thread, but I can confirm that it happened on 5.2.4 for me:

PHP version: 5.2.4
Register globals: 1
GD Image Library: version bundled (2.0.34 compatible), supported formats: GIF, JPG, PNG
Server Local Time: 2008-01-08 02:41:24
MySQL: 5.0.45-community
Locale: en_US.UTF-8
Server: Apache/1.3.39 (Unix) PHP/5.2.4 mod_auth_passthrough/1.8 mod_log_bytes/1.2 mod_bwlimited/1.4 FrontPage/5.0.2.2635.SR1.2 mod_ssl/2.8.30 OpenSSL/0.9.7a
Apache version: Apache/1.3.39 (Unix) PHP/5.2.4 mod_auth_passthrough/1.8 mod_log_bytes/1.2 mod_bwlimited/1.4 FrontPage/5.0.2.2635.SR1.2 mod_ssl/2.8.30 OpenSSL/0.9.7a
PHP Server API: apache
RFC 2616 headers:
Server OS: Linux 2.6.9-67.ELsmp

---

Amit | byAmit

#24 2008-01-08 20:49:50

ruud

Developer Emeritus

From: a galaxy far far away

Registered: 2006-06-04

Posts: 5,068

Website

Re: [issue] Running site in debugging mode gives internal server error

Let’s try to get a minimal code example that still triggers this error:

<?php
$callers = join("\n", get_caller(10))

function get_caller($id)
{
  $out = array();
  $bt = debug_backtrace();
  return $out;
}
?>

and with a non-empty array.

<?php
level1();

function level1() {level2();}
function level2() {level3();}
function level3() {
  $callers = join("\n", get_caller(10));
}

function get_caller($id)
{
  $out = array();
  $bt = debug_backtrace();
  $out[] = 'something';
  $out[] = 'else';
  return $out;
}
?>