primitive value overflow

[Ary Borenszweig]

On 5/16/13 5:24 PM, luka8088 wrote:
> Hello everyone.
>
> Today I ran into a interesting issue. I wrote
>
>    auto offset = text1.length - text2.length;
>
> and in case text2 was longer then text1 I got something around 4294967291.
>
> So I opened an issue:
> http://d.puremagic.com/issues/show_bug.cgi?id=10093
>
> I know that there is a perfectly valid reason for this behavior, and
> that this behavior is not undefined, but it is unexpected, especially
> because unsigned is never mentioned in the code. One solution that comes
> to mind is changing length to signed, but that makes no sense because
> length is never negative.

It makes sense if you don't want to have these subtle bugs in your 
programming language -.-