I worked on Windows crash reporting in its early several years. One of the very hard problems was to figure out the “circumstances” that cause a crash. Actually

I worked on Windows crash reporting in its early several years. One of the very hard problems was to figure out the “circumstances” that cause a crash. Actually, even defining what “a crash” is turns out to be hard. A single bug can manifest in all sorts of ways, especially if it’s something very low-level like a processor or code generation bug. Inferring the commonalities out of a bunch of stack dumps to make it visible to humans that there really is just one bug there is probably still a largely unsolved problem.