Deduplicating and identifying the source of a crash point is surprisingly hard, to the point that “it’s the only crash of its kind” could be a bug in your logic for linking issues.

Also, in an unsafe language all bets are off. A memory clobber, UAF or race condition can generate quite strange and ephemeral crashes. Even if the majority of time it generates the “same” failure mode, it can still sporadically generate a rare execution trace. It’s best to stop thinking of these as deterministic processes and more as a distribution of possible outcomes.