Should application catch “bad” signals such as SIGSEV, SIGBUS?
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Those signals are produced in “should never happen” circumstances, when your program is in an undefined state. If you did catch them, continuing execution would be extremely problemeatic, as it would almost certainly cause more, possibly even more severe, errors. Also, if you don’t catch them, the OS may be able to do things like produce useful diagnostics such as core dumps. So I would say “no”, unless you don’t want the core dump, and your error handling does something very simple such as write to a log and terminate.