RESTGeant4 metadata geometry issue with visualization

[jgalan]

Thanks for pointing out this problem, this was also recently remarked by @girardcarillo.

We created an issue at : The second call of `REST_Geant4_ViewGeometry.C will produce a geometry without master volume · Issue #88 · rest-for-physics/geant4lib · GitHub

So it seems some changes around version 2.3.11 affected the visualisation. Perhaps @lobis might identify the problem.

Warning: invalid memory pointer passed to a callee: geo->GetMasterVolume()->Draw();

ok, thanks for the explanation. Concerning the fact that the REST_Geant4_ViewGeometry macro crashes even at first try, some update: I have now a Conda environment with Root 6.26/10 (and Geant4 11.0.3). I still have the same problem. Sometimes, I would have this crash (always with the same error message), and sometimes not, with no modification of the .gdml file between the 2 attempts.