> It reminds me of my short stint writing C++ where I'd read undefined memory in release mode, but when I ran it under debug mode it just worked. I assume it’s

> It reminds me of my short stint writing C++ where I'd read undefined memory in release mode, but when I ran it under debug mode it just worked. I assume it’s far too late at this point, but that almost always means that you’re invoking UB. Your next step should be enabling UBSan.