Is this reasonable?

[Maxim Fomin]

On Thursday, 5 December 2013 at 18:26:48 UTC, Jonathan M Davis 
wrote:
> On Thursday, December 05, 2013 19:16:29 Maxim Fomin wrote:
>> On Thursday, 5 December 2013 at 17:15:39 UTC, Steve Teale 
>> wrote:
>> > Is this unavoidable, or could the compiler safely make the
>> > conversion implicitly?
>> 
>> It is example of notorious phenomemena called "integer
>> promotions" and "usual arithmetic conversions". It is 
>> unavoidable
>> given Walter's decision to keep this C stuff in D.
>
> To be fair, you can't solve the problem automatically. It's 
> fundamentally
> wrong to compare signed and unsigned values, and doing either 
> the conversion
> to unsigned or to signed could be wrong (or both could be 
> wrong), depending on
> the values. The best that could be done would be to warn about 
> the comparison
> or to make it an error.
>
> http://d.puremagic.com/issues/show_bug.cgi?id=259
>
> - Jonathan M Davis

Warning would be an option, but AFAIK Walter does not like 
warnings, so it is unlikely to be implemented.