try/catch idiom in std.datetime

[Dicebot]

On Monday, 18 November 2013 at 20:49:48 UTC, Walter Bright wrote:
> Most architectures I've used supported a HLT, and there's 
> always something the back end could construct if it had to, 
> even:
>
>      ...
>      call halt
>      ...

I am pretty sure on my x86_64 Linux `assert(0)` results in 
termination via SIGILL (Illegal Instruction). Well, it is still a 
hard crash so no big deal but probably in not an expected way.