php5: dyld confused about multiple installed libxml2 versions

[bkw (Bernhard Weisshuhn (a.k.a. bernhorst))]

this might be a similar issue like #14063.

Recent libxml2 versions have much improved schema validation functionality over the one shipped with leopard does. But Dyld seems to think they are interchangable, based on the compatibilty version 9.0.0. I upgraded everything from macports (apache2, libxml2, php5) but still see the old library at work. Validating an xml file against a schema gives the following error message:

Warning: DOMDocument::schemaValidate() [domdocument.schemavalidate]: Unimplemented block at /SourceCache/libxml2/libxml2-17.7.6/libxml2/pattern.c:851 in [...]/tests/xmllib2.php on line 10

Warning: DOMDocument::schemaValidate() [domdocument.schemavalidate]: Unimplemented block at /SourceCache/libxml2/libxml2-17.7.6/libxml2/pattern.c:851 in [...]/tests/xmllib2.php on line 10

Warning: DOMDocument::schemaValidate() [domdocument.schemavalidate]: Internal error: xmlSchemaIDCAddStateObject, failed to create an XPath validation context. in [...]/tests/xmllib2.php on line 10

Warning: DOMDocument::schemaValidate() [domdocument.schemavalidate]: Internal error: xmlSchemaValidateElem, calling xmlSchemaValidateElemDecl(). in [...]/tests/xmllib2.php on line 10

Warning: DOMDocument::schemaValidate() [domdocument.schemavalidate]: Internal error: xmlSchemaDocWalk, calling xmlSchemaValidateElem(). in [...]/tests/xmllib2.php on line 10

Note the mention of libxml2-17.7.6, I have 2.6.63 installed, which phpinfo() also cofirms. I don't even have a /SourceCache directory!

Also the httpd backend crashes with a malloc error (non-aligned pointer beeing freed).

During my investigaion I cooked all kinds of php versions on my own, experimenting with all kinds of ld-options like -force_flat_namespace, but always had similar results. phpinfo() pretends to use version 2.6.32 from /opt/local/lib, but in reality leopard's version from /usr/lib is beeing used. One Combination (iirc it was with suhoshin and xdebug linked in) produced a crash-reporter dump, that actually showed both versions of libxml2 in memory.

php code to reproduce this problem is as easy as:

$dom = new DOMDocument;
$dom->load('somefile.xml');
$dom->schemaValidate('someschema.xsd');

Please mail me if you need more details, i can reproduce this all to easily.

[bkw (Bernhard Weisshuhn (a.k.a. bernhorst))]

btw, the php team rejected a (imho) similar bug as a build configuration issue: ​http://bugs.php.net/bug.php?id=43883

[jariberg@…]

I solved this myself by changing --with-libxml-dir in the php5 Portfile and reinstalled php5 (did an uninstall, clean first)

edit: /opt/local/var/macports/sources/rsync.macports.org/release/ports/www/php5/Portfile
change: --with-libxml-dir=${prefix} to use the native libxml version by changing it to --with-libxml-dir=/usr

Remember to recompile and stop/start apache. It should now work!

[bkw (Bernhard Weisshuhn (a.k.a. bernhorst))]

Thanks for the reply, but the whole point was to actually use the new and much improved functionality of the NEW libxml2 version. Any hints on that?

[jmroot (Joshua Root)]

Has building libxml2 with two-level namespace helped with this? (#15750, r38015)

[bkw (Bernhard Weisshuhn (a.k.a. bernhorst))]

Replying to jmr@macports.org:

Has building libxml2 with two-level namespace helped with this? (#15750, r38015)

Yes, it has! Thanks a bunch, ricci and jmr! You may close this ticket, I'm a happer camper now.

[bkw (Bernhard Weisshuhn (a.k.a. bernhorst))]

Replying to bkw@weisshuhn.de:

Replying to jmr@macports.org:

Has building libxml2 with two-level namespace helped with this? (#15750, r38015)

Yes, it has! Thanks a bunch, ricci and jmr! You may close this ticket, I'm a happer camper now.

No, I don't know what a "happer" camper is either, and I guess I don't want to know. That's "happy" of course.

[ryandesign (Ryan Carsten Schmidt)]

Replying to bkw@weisshuhn.de:

Replying to jmr@macports.org:

Has building libxml2 with two-level namespace helped with this? (#15750, r38015)

Yes, it has! Thanks a bunch, ricci and jmr! You may close this ticket, I'm a happer camper now.

Oh good!

[(none)]

Milestone Port Bugs deleted