There seems to be an issue in TGenerator::GetParticle in that it returns (TParticle*)fParticles->UncheckedAt(i);
but if one is using TPythia6, fParticles is actually filled with pointers to TMCParticle objects. Recall that fParticles is declared by “TObjArray *fParticles;”.
TMCParticle does not inherit from TParticle (on the surface, it seems like it should), so one gets a TParticle pointer that actually points to an object that does not inherit from TParticle. This seems bad. Am I missing some subtly?
I noticed this with 5.16, but it appear to be true in 5.18 as well.