Hi list,
LibXML2 is known to not yet support GML 3.1.1 schema 'as is'
https://bugzilla.gnome.org/show_bug.cgi?id=630130
And even if we have hope to fix this bug in next libxml2 release (related patch is already available)
we have to find a workaround in a the meantime, for geospatial implemenations using libxml2.
A lead is to slightly change the distributed GML 3.1.1 XSD schema itself:
http://www.tinyows.org/trac/changeset/561