HP Prime crashes on undef-undef*i in CAS

[rprosperi]

(11-29-2020 04:49 PM)toml_12953 Wrote:  IMHO, even if there's a workaround, no sequence of commands should ever be allowed to crash or even reset the calculator. If one is found, it should be fixed ASAP with an out-of-band OS release or patch. That's the way the old HP would have done it (see the original HP-35 bug)

Yeah... no, they're gone. Not forgotten for sure, but definitely gone.

As for this problem, there can be no doubt that nothing should be allowed to crash the machine, but that said, the subject command is meaningless so unlikely to ever be encountered (except by folks reading this thread) though it's creative and impressive that lyuka thought to explore it. BTW, the lowly 36-year old HP-71B handles this and properly reports this (NAN-NAN*i) as invalid.