Possible use-after-free in GateToRoot.cc?

[bwynneHEP]

Describe the bug
In GateToRoot::RecordEndOfAcquisition() the line

m_hfile = m_treesHit[0]->GetCurrentFile();

causes a segfault. This is because RecordEndOfAcquisition() is called after RecordEndOfRun() which clears m_treesHit.

Confusingly, this is 100% repeatable on my system for a variety of simple example macros,, however does not appear on other systems at all, thus leading me to suspect it's a use-after-free.

Desktop (please complete the following information):

• OS: Manjaro linux
• Gate version or commit hash: v9.4.1
• Geant4 version: v11.2.0
• Root version: v6.36.02
• compiler version: g++ v13.3.1

Minimal example
main.mac: https://github.com/BenAuer2021/Simulation-And-Reconstruction-Of-Nuclear-Medicine-Imaging-Systems-PET/blob/main/main.mac

Gate main.mac

Expected behavior
No segfault!

Additional context
I can trivially fix the issue by commenting the GateToRoot::RecordEndOfRun() line

m_treesHit.clear();

but I wonder if I'm missing something.

No error seen on colleague's Mac with otherwise similar software.