Throw stack trace from program kill

[Adam D Ruppe]

On Sunday, 16 January 2022 at 18:03:53 UTC, Paul Backus wrote:
> extern(C) void handleCtrlC(int)
> {
> 	throw new Error("Killed by CTRL+C");
> }

This is really iffy since signals can come to random threads at 
random times.

The best thing to do is typically to just set a "user requested 
quit" flag from the signal handler and then make sure you check 
that periodically in other parts of your program. Then those 
other parts can exit gracefully or throw sanely or whatever.