Strange enum type conversion

[John (Eljay) Love-Jensen]

Hi Andrew,

> Yes, but there are a fair few loop optimizations that are disabled by
> -fwrapv, so in general it's much better to write in C, not some semi-
> broken version of it.

I heartily agree!  My apologies to everyone if I appeared to be advocating
otherwise.

I would not use -fwrapv, nor do I advocate the use of it to avoid the
surprise.  Rather, I strongly discourage the use of -fwrapv.

Instead of using a -f<something> as a workaround for bad code, I suggest to
the surprised developer to take the opportunity to learn from the surprise,
and (as per Brian Marshall) write in C to avoid such undefined behaviors.

That being said, C has a lot of sharp edges and dusty corners.  Ditto for
C++.  Plenty of opportunities to learn from.

(This is not a slam against C or C++.  Bad code can be written in any
language.)

Sincerely,
--Eljay