Showing the contents of the d pointers during debugging

[martonmiklos]

I am using Ubuntu 16.04 with QtCreator 4.3.1 with gcc+gdb an I am trying to debug a library called kode:
https://github.com/cornelius/kode

Internally it uses the d pointer method, and my debugger is unable to see it's contents:

If I add an expression from the right context menu it says no such value:

I have compiled my library with the debug configuration do I need to do anything else?

[martonmiklos]

Any ideas?

The same question had been brought up at the Qt mailing list years ago:
http://lists.qt-project.org/pipermail/interest/2015-September/018826.html

But the things suggested there did not helped me.
Adding an expression for the d pointers did not help either.