I had really fun implementing coroutines, (almost-zero cost) exceptions, iterators etc with setjmp and longjmp. I think they're too useful to be banned outright

I had really fun implementing coroutines, (almost-zero cost) exceptions, iterators etc with setjmp and longjmp. I think they're too useful to be banned outright (especially since C has no view on stack) since there are cases where you need to either use them or inline assembly, but I agree that they're the evilest of evilest std C functions.