[Issue 259] Comparing signed to unsigned does not generate an error

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=259

--- Comment #72 from Stewart Gordon <smjg at iname.com> ---
(In reply to thomas.bockman from comment #71)
> The real problem is that the current strange behaviour of mixed comparisons
> is occasionally deliberately used in correct code. D must not be updated in
> a way that silently breaks all that pre-existing correct code. Hence, a
> warning (or at least, a *long* deprecation period) is the only good option
> for D2.

I don't understand.  How can code that the spec explicitly forbids possibly be
correct?

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