QXmlSchemaValidator runs out of memory

The QXmlSchemaValidator runs out of memory for rather simple xml and xsd files. This can be repeated using xmlpatternsvalidator (tested on Windows 7) using the attached files:
$./xmlpatternsvalidator.exe file:///Z:/.../test.xml file:///Z:/local/.../test.xsd ; echo $?

This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.
terminate called after throwing an instance of 'std::bad_alloc'
what(): std::bad_alloc
3

I reduced the files to the bare minimum required to reproduce the problem. Commenting out any entry in the xs:all list of Level3 and the validation works fine.

The is a possibly related bug QTBUG-12534, but I could not reproduce that problem any more.