Debian Bug report logs - #831739
/usr/lib/php/20151012/wddx.so: undefined symbol: php_XML_SetUserData

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Christoph Anton Mitterer <calestyo@scientia.net>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: /usr/lib/php/20151012/wddx.so: undefined symbol: php_XML_SetUserData

Date: Mon, 18 Jul 2016 22:45:16 +0200

Package: php7.0-xml
Version: 7.0.8-5
Severity: normal

Hey.

This happens on a jessie system (!!) where I've enabled all PHP 7 packages
via apt_preferences mechanism in order to run Icinga Web2 from testing

The whole thing is via Apache HTTP and using the CGI SAPI.


On every access to the site, I get a:
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/20151012/wddx.so' - /usr/lib/php/20151012/wddx.so: undefined symbol: php_XML_SetUserData in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/20151012/wddx.so' - /usr/lib/php/20151012/wddx.so: undefined symbol: php_XML_SetUserData in Unknown on line 0

in the Apache error logs.

It doesn't really seem to cause any problems, but possibly, Icigna Web2 simply makes no use
of wddx and just requires other stuff from modules shipped with php-xml.


Best wishes,
Chris.

Message #10 received at 831739@bugs.debian.org (full text, mbox, reply):

From: J G Miller <miller@yoyo.ORG>

To: Debian Bug Reporting System <831739@bugs.debian.ORG>

Subject: undefined symbol "php_XML_SetUserData" in plugin shared library wddx.so

Date: Fri, 26 Aug 2016 19:06:41 +0200

Concerning the undefined symbol "php_XML_SetUserData" in /usr/lib/php/20151012/wddx.so,
this symbol "php_XML_SetUserData" appears to be defined in /usr/lib/php/20151012/xml.so

Therfore the plugin wddx must be loaded after the plugin xml.so

The Debian configuration priority for xml and wddx are apparently both set to 20, so
that in the conf.d directories of symbolic links, the alphabetic/alphanumeric listing
result in wddx being loaded before xml.

Therefore the solutio to the problem is to assign a lower priority (30 say) to wddx
so that wddx appears after xml in the alphabetic/alphanumeric listing of the conf.d
directories of symbolic links.

In some previous versions, did xml.ini in fact have a priority of 15 to ensure
that this problem did not occur?

Message #15 received at 831739@bugs.debian.org (full text, mbox, reply):

From: Ondřej Surý <ondrej@sury.org>

To: J G Miller <miller@yoyo.ORG>, 831739@bugs.debian.org

Subject: Re: [php-maint] Bug#831739: undefined symbol "php_XML_SetUserData" in plugin shared library wddx.so

Date: Mon, 05 Sep 2016 09:09:44 +0200

Hi J G,

are you sure about the priorities?

$ cat /etc/php/7.0/mods-available/xml.ini 
; configuration for php xml module
; priority=15
extension=xml.so

I just checked the package and it looks correct on my side. Do you still
have the apt.log related to the php7.0-xml installation?

Cheers,
-- 
Ondřej Surý <ondrej@sury.org>
Knot DNS (https://www.knot-dns.cz/) – a high-performance DNS server
Knot Resolver (https://www.knot-resolver.cz/) – secure, privacy-aware,
fast DNS(SEC) resolver
Vše pro chleba (https://vseprochleba.cz) – Potřeby pro pečení chleba
všeho druhu

On Fri, Aug 26, 2016, at 19:06, J G Miller wrote:
> 
> Concerning the undefined symbol "php_XML_SetUserData" in
> /usr/lib/php/20151012/wddx.so,
> this symbol "php_XML_SetUserData" appears to be defined in
> /usr/lib/php/20151012/xml.so
> 
> Therfore the plugin wddx must be loaded after the plugin xml.so
> 
> The Debian configuration priority for xml and wddx are apparently both
> set to 20, so
> that in the conf.d directories of symbolic links, the
> alphabetic/alphanumeric listing
> result in wddx being loaded before xml.
> 
> Therefore the solutio to the problem is to assign a lower priority (30
> say) to wddx
> so that wddx appears after xml in the alphabetic/alphanumeric listing of
> the conf.d
> directories of symbolic links.
> 
> In some previous versions, did xml.ini in fact have a priority of 15 to
> ensure
> that this problem did not occur?
> 
> _______________________________________________
> pkg-php-maint mailing list
> pkg-php-maint@lists.alioth.debian.org
> http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-php-maint

Message #20 received at 831739-done@bugs.debian.org (full text, mbox, reply):

From: Ondřej Surý <ondrej@sury.org>

To: J G Miller <miller@yoyo.ORG>, 831739-done@bugs.debian.org

Subject: Re: [php-maint] Bug#831739: undefined symbol "php_XML_SetUserData" in plugin shared library wddx.so

Date: Mon, 05 Sep 2016 16:16:01 +0200

Ok, closing the bug.

Cheers,
-- 
Ondřej Surý <ondrej@sury.org>
Knot DNS (https://www.knot-dns.cz/) – a high-performance DNS server
Knot Resolver (https://www.knot-resolver.cz/) – secure, privacy-aware,
fast DNS(SEC) resolver
Vše pro chleba (https://vseprochleba.cz) – Potřeby pro pečení chleba
všeho druhu

On Mon, Sep 5, 2016, at 15:51, J G Miller wrote:
> At 09:09h, on Monday, September 05, 2016,
> in message
> <1473059384.2272376.715823825.592B0F7B@webmail.messagingengine.com>,
> on the subject of "Re: [php-maint] Bug#831739: undefined symbol
> "php_XML_SetUserData" in plugin shared library wddx.so", you wrote -
> 
>  > are you sure about the priorities?
> 
> I was not certain about the current priorities on Debian jessie and I did
> ask
> 
>   >> In some previous versions, did xml.ini in fact have a priority of 15 to
>   >> ensure that this problem did not occur?
> 
> Doing a purge, moving /etc/ucf.conf out of the way, and reinstalling
> 
>   dom.ini:         ; priority=20
>   simplexml.ini:   ; priority=20
>   wddx.ini:        ; priority=20
>   xml.ini:         ; priority=15
>   xmlreader.ini:   ; priority=20
>   xmlwriter.ini:   ; priority=20
>   xsl.ini:         ; priority=20
> 
> So xml.ini is definitely 15.
> 
> I did send an e-mail message to the original reporter of the bug
> explaining in
> more details at the tiem of making the additional comments to the bug
> report,
> but never received a response.
> 
> Looks like a misconfiguration by the end user so the bug should be
> closed, but
> should anybody ever run into the same undefined symbol problem, they will
> know
> what to check if they find the bug report.
> 
> Thanks for all the work you do on maintaining the PHP packages,
> Greg

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