RFC: Change what assert does on error

[Derek Fawcus]

On Sunday, 29 June 2025 at 18:04:51 UTC, Richard (Rikki) Andrew 
Cattermole wrote:
> What a couple of us are suggesting is that we change the 
> default behaviour from ``throw AssertError``.
> To: ``printBacktrace; exit(-1);``

I have no issue with the suggestion.

I simply note that on posix systems, the return value usually 
gets mask to 8 bits, so the above is identical to exit(255).

DF