Application crash while loading not well-formed svg.

When I try to load svg from attachment with code like:

 
#include <QApplication>
#include <QImage>
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QImage("test.svg");
    return a.exec();
}

I get segfault.

Despite that this svg file is not really well formed - most of browsers and svg editors can handle it.

The problem is that in linearGradient element we have xlink:href to the same object.