That's unpossible!
A few pointer errors down (this time not in my code :). I had issues getting valgrind running, but with brlcad and Flash’s help, I was able to get somewhere. Interestingly, though, something “impossible” caused valgrind to crash horribly. I have a hunch that this is because the version I’m using is outdated. This will be sorted through tomorrow, while the bug hunt continues until further notice.