Error in GFLash test

[andresailer]

• OS: any
• compiler: any tested with dev3/dev4
• Commit: master
• Reproducer: building and testing against dev3 or dev4 LCG environment
• Output: https://github.com/AIDASoft/DD4hep/actions/runs/5655190432/job/15595805064
• Goal: the test shouldn't fail

[snip]
Gun              INFO  Particle [0] e+           Mom:50.000 GeV vertex:( 0.000  0.000  0.000)[mm] direction:(-0.634  0.485 -0.603)
ParticleHandler  INFO  +++ Event 0 Begin event action. Access event related information.
Gun              INFO  Particle [0] e+           Mom:50.000 GeV vertex:( 0.000  0.000  0.000)[mm] direction:(-0.202  0.068  0.977)
ParticleHandler  INFO  +++ Event 1 Begin event action. Access event related information.
Geant4Kernel     FATAL +++ Exception while simulating: BitFieldElement 'x': out of range : -2147483648 for width 12
Geant4Kernel     INFO  ++ Terminate Geant4 and delete associated actions.
RootOutput       INFO  +++ Closing ROOT output file SiliconBlock_GFlash_2023-08-03_19-49.root

[andresailer]

Somewhere we get some NANs for the position of a hit

221: void dd4hep::sim::TrackerCombine::start(const dd4hep::sim::Geant4FastSimSpot*)
221: Spot  x=    22.0924 y=    2.24376 z=    249.554 energy 0
221: X ID-4
221: Y ID0
221: void dd4hep::sim::TrackerCombine::start(const dd4hep::sim::Geant4FastSimSpot*)
221: Spot  x=        nan y=        nan z=        nan energy 52.8525
221: X ID-2147483648
221: Y ID-2147483648